Janković, Bojan Ž.

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Authority KeyName Variants
orcid::0000-0001-7520-1972
  • Janković, Bojan Ž. (73)
  • Janković, Bojan (49)
Projects
Dynamics of nonlinear physicochemical and biochemical systems with modeling and predicting of their behavior under nonequilibrium conditions Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 451-03-68/2020-14/200017 (University of Belgrade, Institute of Nuclear Sciences 'Vinča', Belgrade-Vinča)
Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 451-03-68/2020-14/200105 (University of Belgrade, Faculty of Mechanical Engineering) Advanced technologies for monitoring and environmental protection from chemical pollutants and radiation burden
Functional, Functionalized and Advanced Nanomaterials Materials of Reduced Dimensions for Efficient Light Harvesting and Energy conversion
Pollution Reduction from Thermal Power Plants of the Public Enterprise “Electric Power Industry of Serbia” Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 451-03-68/2020-14/200026 (University of Belgrade, Institute of Chemistry, Technology and Metallurgy - IChTM)
Ministry of Education, Science and Technological Development of the Republic of Serbia Size-, shape- and structure- dependent properties of nanoparticles and nanocomposites
Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 451-03-68/2020-14/200051 (Institute of General and Physical Chemistry, Belgrade) Nanostructured Functional and Composite Materials in Catalytic and Sorption Processes
Multiscale structuring of polymer nanocomposites and functional materials based on different precursors Predefined functional properties polymer composite materials processes and equipment development
STABILISE - Sustainable deployment of biomass catalytic gasification technology to increase the utilization of renewable energy in the Serbian industry Hydrogen Energy - Research and Development of New Materials: Electrolytic Hydrogen Production, Hydrogen Fuel Cells, Isotope Effects
Uticaj citoplazmatičke muške sterilnosti i ksenija na prinos zrna i agronomske osobine kukuruza Oxide-based environmentally-friendly porous materials for genotoxic substances removal
Photonics of micro and nano structured materials Synthesis, processing and characterization of nanostructured materials for application in the field of energy, mechanical engineering, environmental protection and biomedicine
Biodiversity as potential in ecoremediation technologies of degraded ecosystems Research and verification of the multidisciplinary forensic methods in
HiSuperBat - High-Capacity Electrodes for Aqueous Rechargeable Multivalent-Ion Batteries and Supercapacitors: Next Step Towards a Hybrid Model Associate Laboratory for Green Chemistry LAQV - FCT/MEC (UID/QUI/50006/2013)
Bilateral project between the Republic of Serbia and Republic of Montenegro (2019-2020) "Recycling and valorization of wasted seashells" COST [CA18202]
European Regional Development Fund under the PT2020 Partnership Agreement (POCI-01-0145-FEDER-007265) FCT/MCTES (Portugal) (FCT 2014 (IF/00190/2014))
Application of advanced oxidation processes and nanostructured oxide materials for the removal of pollutants from the environment, development and optimisation of instrumental techniques for efficiency monitoring Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 451-03-68/2020-14/200019 (University of Belgrade, Institute for the Application of Nuclear Energy - INEP)

Author's Bibliography

Natural or Artificial Tritium in Rivers – The Assessment Using Symmetrical Index

Janković, Marija; Sarap, Nataša; Janković, Bojan; Krneta Nikolić, Jelena; Rajačić, Milica; Vukanac, Ivana; Jelić, Ivana; Šljivić-Ivanović, Marija

(2024)

TY  - JOUR
AU  - Janković, Marija
AU  - Sarap, Nataša
AU  - Janković, Bojan
AU  - Krneta Nikolić, Jelena
AU  - Rajačić, Milica
AU  - Vukanac, Ivana
AU  - Jelić, Ivana
AU  - Šljivić-Ivanović, Marija
PY  - 2024
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/13422
AB  - Tritium, hydrogen isotope, with a half-life of 12.3 years, is produced in two ways: naturally and artificially. Naturally, tritium is generated through the interaction of cosmic radiation protons and neutrons with gases in the upper atmosphere. Artificially, tritium origins from the atmospheric nuclear tests, production from nuclear reactors, future fusion reactors, fuel reprocessing plants, heavy water production facilities and commercial production for medical diagnostics, radiopharmaceuticals, luminous paints. Elevated concentrations of tritium in the environment are of great public concern. Considering the fact that nuclear power plants are located on rivers, knowing the activity concentration of this isotope in rivers is of great importance. This work presents the results for tritium determination in Danube and Sava River in Belgrade, Serbia. The origin of tritium was estimated using a mathematical parameter, symmetrical index.
T2  - Nuclear Engineering and Design
T1  - Natural or Artificial Tritium in Rivers – The Assessment Using Symmetrical Index
VL  - 427
SP  - 113419
DO  - 10.1016/j.nucengdes.2024.113419
ER  - 
@article{
author = "Janković, Marija and Sarap, Nataša and Janković, Bojan and Krneta Nikolić, Jelena and Rajačić, Milica and Vukanac, Ivana and Jelić, Ivana and Šljivić-Ivanović, Marija",
year = "2024",
abstract = "Tritium, hydrogen isotope, with a half-life of 12.3 years, is produced in two ways: naturally and artificially. Naturally, tritium is generated through the interaction of cosmic radiation protons and neutrons with gases in the upper atmosphere. Artificially, tritium origins from the atmospheric nuclear tests, production from nuclear reactors, future fusion reactors, fuel reprocessing plants, heavy water production facilities and commercial production for medical diagnostics, radiopharmaceuticals, luminous paints. Elevated concentrations of tritium in the environment are of great public concern. Considering the fact that nuclear power plants are located on rivers, knowing the activity concentration of this isotope in rivers is of great importance. This work presents the results for tritium determination in Danube and Sava River in Belgrade, Serbia. The origin of tritium was estimated using a mathematical parameter, symmetrical index.",
journal = "Nuclear Engineering and Design",
title = "Natural or Artificial Tritium in Rivers – The Assessment Using Symmetrical Index",
volume = "427",
pages = "113419",
doi = "10.1016/j.nucengdes.2024.113419"
}
Janković, M., Sarap, N., Janković, B., Krneta Nikolić, J., Rajačić, M., Vukanac, I., Jelić, I.,& Šljivić-Ivanović, M.. (2024). Natural or Artificial Tritium in Rivers – The Assessment Using Symmetrical Index. in Nuclear Engineering and Design, 427, 113419.
https://doi.org/10.1016/j.nucengdes.2024.113419
Janković M, Sarap N, Janković B, Krneta Nikolić J, Rajačić M, Vukanac I, Jelić I, Šljivić-Ivanović M. Natural or Artificial Tritium in Rivers – The Assessment Using Symmetrical Index. in Nuclear Engineering and Design. 2024;427:113419.
doi:10.1016/j.nucengdes.2024.113419 .
Janković, Marija, Sarap, Nataša, Janković, Bojan, Krneta Nikolić, Jelena, Rajačić, Milica, Vukanac, Ivana, Jelić, Ivana, Šljivić-Ivanović, Marija, "Natural or Artificial Tritium in Rivers – The Assessment Using Symmetrical Index" in Nuclear Engineering and Design, 427 (2024):113419,
https://doi.org/10.1016/j.nucengdes.2024.113419 . .
1
1

Novel insights into the problem of enthalpy and entropy convergence in thermal decomposition of coal slag using the data from non-isothermal kinetic measurements

Janković, Bojan; Janković, Marija; Smičiklas, Ivana; Jović, Mihajlo; Vukanac, Ivana; Mraković, Ana; Manić, Nebojša

(2024)

TY  - JOUR
AU  - Janković, Bojan
AU  - Janković, Marija
AU  - Smičiklas, Ivana
AU  - Jović, Mihajlo
AU  - Vukanac, Ivana
AU  - Mraković, Ana
AU  - Manić, Nebojša
PY  - 2024
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/13237
AB  - This study provides insight into benefits of thermo-chemical conversion of coal slag as recovery process into value-added products. This research involves kinetic analysis of process conducted through non-isothermal thermal analysis measurements, with additional raw material characterization. Kinetic results showed that decomposition proceeds through two consecutive reactions steps (first one, including anorthite P1‾ → I1‾ phase transition, and then production of incongruent melting product (ternary system: CaO⋅Al2O3⋅2SiO2 (CAS2), where viscosity of slag changes), and second one including dehydration and formation of meta-muscovite, and subsequently, thermal disruption of muscovite de-hydroxylated phase, which proceeds with breaking of octahedral Al–O bonds), and one single-step reaction (attributed to CO-reduction of hematite to magnetite). Thermodynamic results showed an existence of physically meaningful isokinetic temperature (Tiso), which corresponds to active vibrational frequency of surroundings of SiO2 reaction site, manifested through Si‒O bond weakening by catalytic reaction of freed hydroxide ion (OH􀀀 ). It was concluded that at temperature T = Tiso, the course of process loses its dependence on temperature and pressure, regulating changes between thermodynamic parameters, through enthalpy-entropy compensation (EEC) effect.
T2  - Thermochimica Acta
T1  - Novel insights into the problem of enthalpy and entropy convergence in thermal decomposition of coal slag using the data from non-isothermal kinetic measurements
VL  - 736
SP  - 179763
DO  - 10.1016/j.tca.2024.179763
ER  - 
@article{
author = "Janković, Bojan and Janković, Marija and Smičiklas, Ivana and Jović, Mihajlo and Vukanac, Ivana and Mraković, Ana and Manić, Nebojša",
year = "2024",
abstract = "This study provides insight into benefits of thermo-chemical conversion of coal slag as recovery process into value-added products. This research involves kinetic analysis of process conducted through non-isothermal thermal analysis measurements, with additional raw material characterization. Kinetic results showed that decomposition proceeds through two consecutive reactions steps (first one, including anorthite P1‾ → I1‾ phase transition, and then production of incongruent melting product (ternary system: CaO⋅Al2O3⋅2SiO2 (CAS2), where viscosity of slag changes), and second one including dehydration and formation of meta-muscovite, and subsequently, thermal disruption of muscovite de-hydroxylated phase, which proceeds with breaking of octahedral Al–O bonds), and one single-step reaction (attributed to CO-reduction of hematite to magnetite). Thermodynamic results showed an existence of physically meaningful isokinetic temperature (Tiso), which corresponds to active vibrational frequency of surroundings of SiO2 reaction site, manifested through Si‒O bond weakening by catalytic reaction of freed hydroxide ion (OH􀀀 ). It was concluded that at temperature T = Tiso, the course of process loses its dependence on temperature and pressure, regulating changes between thermodynamic parameters, through enthalpy-entropy compensation (EEC) effect.",
journal = "Thermochimica Acta",
title = "Novel insights into the problem of enthalpy and entropy convergence in thermal decomposition of coal slag using the data from non-isothermal kinetic measurements",
volume = "736",
pages = "179763",
doi = "10.1016/j.tca.2024.179763"
}
Janković, B., Janković, M., Smičiklas, I., Jović, M., Vukanac, I., Mraković, A.,& Manić, N.. (2024). Novel insights into the problem of enthalpy and entropy convergence in thermal decomposition of coal slag using the data from non-isothermal kinetic measurements. in Thermochimica Acta, 736, 179763.
https://doi.org/10.1016/j.tca.2024.179763
Janković B, Janković M, Smičiklas I, Jović M, Vukanac I, Mraković A, Manić N. Novel insights into the problem of enthalpy and entropy convergence in thermal decomposition of coal slag using the data from non-isothermal kinetic measurements. in Thermochimica Acta. 2024;736:179763.
doi:10.1016/j.tca.2024.179763 .
Janković, Bojan, Janković, Marija, Smičiklas, Ivana, Jović, Mihajlo, Vukanac, Ivana, Mraković, Ana, Manić, Nebojša, "Novel insights into the problem of enthalpy and entropy convergence in thermal decomposition of coal slag using the data from non-isothermal kinetic measurements" in Thermochimica Acta, 736 (2024):179763,
https://doi.org/10.1016/j.tca.2024.179763 . .

Application of Model-Free and Model-Based Kinetic Methods in Evaluation of Reactions Complexity during Thermo-Oxidative Degradation Process: Case Study of [4-(Hydroxymethyl)phenoxymethyl] Polystyrene Resin

Janković, Bojan Ž.; Dodevski, Vladimir; Veljković, Filip M.; Janković, Marija M.; Manić, Nebojša

(2024)

TY  - JOUR
AU  - Janković, Bojan Ž.
AU  - Dodevski, Vladimir
AU  - Veljković, Filip M.
AU  - Janković, Marija M.
AU  - Manić, Nebojša
PY  - 2024
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/13254
AB  - This work examined the possibilities and limitations of model-free and model-based methods related to decrypting the kinetic complexity of multi-step thermo-oxidative degradation processes (as a testing system, a [4-(hydroxymethyl)phenoxymethyl] polystyrene resin was used), monitored by thermal analysis (TGA-DTG-DTA) techniques. It was found that isoconversional methods could successfully determine the correct number of process stages and presence of multiple reactions based on derived Ea(α) profiles and identify the negative dependence of the rate constant on the temperature. These methods could not overcome the problem that arose due to mass transfer limitations. The model-based method overcame more successfully the problem associated with mass transfer because its calculation machinery had capabilities for the correct solution of the total mass balance equation. However, a perfect fit with the experimental data was not achieved due to the dependence on the thermal history of the contribution (ctb.) of a given reaction step inside a fitting procedure cycle. On the other hand, through this approach, it was possible to estimate the rate-controlling steps of the process regarding the influence of the heating rate. It was found that for consecutive reaction mechanisms, the production of benzaldehyde and gases in high yields was controlled by the heating rate, where low heating rates were strongly recommended (≤10 K/min). Also, it was shown that the transport phenomenon may be also the rate-determining step (within the set of “intrinsic” kinetic parameters). It was also established that external heat transfer controls the overall rate, where the “pure” kinetic control regime had not been reached but was approached when lowering the temperature and size of the resin particles.
T2  - Fire
T1  - Application of Model-Free and Model-Based Kinetic Methods in Evaluation of Reactions Complexity during Thermo-Oxidative Degradation Process: Case Study of [4-(Hydroxymethyl)phenoxymethyl] Polystyrene Resin
VL  - 7
IS  - 5
SP  - 165
DO  - 10.3390/fire7050165
ER  - 
@article{
author = "Janković, Bojan Ž. and Dodevski, Vladimir and Veljković, Filip M. and Janković, Marija M. and Manić, Nebojša",
year = "2024",
abstract = "This work examined the possibilities and limitations of model-free and model-based methods related to decrypting the kinetic complexity of multi-step thermo-oxidative degradation processes (as a testing system, a [4-(hydroxymethyl)phenoxymethyl] polystyrene resin was used), monitored by thermal analysis (TGA-DTG-DTA) techniques. It was found that isoconversional methods could successfully determine the correct number of process stages and presence of multiple reactions based on derived Ea(α) profiles and identify the negative dependence of the rate constant on the temperature. These methods could not overcome the problem that arose due to mass transfer limitations. The model-based method overcame more successfully the problem associated with mass transfer because its calculation machinery had capabilities for the correct solution of the total mass balance equation. However, a perfect fit with the experimental data was not achieved due to the dependence on the thermal history of the contribution (ctb.) of a given reaction step inside a fitting procedure cycle. On the other hand, through this approach, it was possible to estimate the rate-controlling steps of the process regarding the influence of the heating rate. It was found that for consecutive reaction mechanisms, the production of benzaldehyde and gases in high yields was controlled by the heating rate, where low heating rates were strongly recommended (≤10 K/min). Also, it was shown that the transport phenomenon may be also the rate-determining step (within the set of “intrinsic” kinetic parameters). It was also established that external heat transfer controls the overall rate, where the “pure” kinetic control regime had not been reached but was approached when lowering the temperature and size of the resin particles.",
journal = "Fire",
title = "Application of Model-Free and Model-Based Kinetic Methods in Evaluation of Reactions Complexity during Thermo-Oxidative Degradation Process: Case Study of [4-(Hydroxymethyl)phenoxymethyl] Polystyrene Resin",
volume = "7",
number = "5",
pages = "165",
doi = "10.3390/fire7050165"
}
Janković, B. Ž., Dodevski, V., Veljković, F. M., Janković, M. M.,& Manić, N.. (2024). Application of Model-Free and Model-Based Kinetic Methods in Evaluation of Reactions Complexity during Thermo-Oxidative Degradation Process: Case Study of [4-(Hydroxymethyl)phenoxymethyl] Polystyrene Resin. in Fire, 7(5), 165.
https://doi.org/10.3390/fire7050165
Janković BŽ, Dodevski V, Veljković FM, Janković MM, Manić N. Application of Model-Free and Model-Based Kinetic Methods in Evaluation of Reactions Complexity during Thermo-Oxidative Degradation Process: Case Study of [4-(Hydroxymethyl)phenoxymethyl] Polystyrene Resin. in Fire. 2024;7(5):165.
doi:10.3390/fire7050165 .
Janković, Bojan Ž., Dodevski, Vladimir, Veljković, Filip M., Janković, Marija M., Manić, Nebojša, "Application of Model-Free and Model-Based Kinetic Methods in Evaluation of Reactions Complexity during Thermo-Oxidative Degradation Process: Case Study of [4-(Hydroxymethyl)phenoxymethyl] Polystyrene Resin" in Fire, 7, no. 5 (2024):165,
https://doi.org/10.3390/fire7050165 . .

Enthalpy–entropy compensation and isoequilibrium relationship in thermo-chemical conversion of cigarette butt filters (CBFs) based on cellulose acetate (CA): causes and effects

Janković, Bojan; Marinović-Cincović, Milena; Manić, Nebojša; Janković, Marija; Waisi, Hadi; Dodevski, Vladimir

(2024)

TY  - JOUR
AU  - Janković, Bojan
AU  - Marinović-Cincović, Milena
AU  - Manić, Nebojša
AU  - Janković, Marija
AU  - Waisi, Hadi
AU  - Dodevski, Vladimir
PY  - 2024
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/13370
AB  - The aim of this study is to explain the consequences of the occurrence of enthalpy–entropy compensation (EEC) and isoequilibrium relationship during slow pyrolysis of cigarette butt filters (CBFs), consisting cellulose acetate (AC) as the main component. By using model-free and model-based kinetic methods and thermodynamic calculations, the complete reaction mechanism and extrathermodynamic issues about investigated process are completely resolved. It was established that compensation phenomenon where isoequilibrium temperature occurs is a consequence of formation of low-entropy molecular structure (cellulose II) and breaking of hydrogen bonds. Consequently, it was concluded that mechanisms which include a formation of low-entropy molecular structure and H-bonds breakage enter the changes in both enthalpy and entropy, which compensate each other. For the cellulose II generation, it was necessary to invest energy which represents use up energy. This “wasted” energy turns into work for creation of cellulose II molecular structures, whereby additional energy was provided from “local” decomposition reactions (which were identified in the established process mechanism) that arise from pyrolysis of starting material. Therefore, it was concluded that for “local reactions”, a negative ΔS° value was identified, but for the global process, the entropy change retained a positive value. Considering thermodynamic effects manifested through compensation temperature found below glass transition temperature (Tg) in the undercooling conditions, it was concluded that small amounts of plasticizers affect reduction of free volume in the glassy state. Obtained results indicated a decrease in β-relaxation mode of cellulose acetate by an abatement of the polymer free volume.
T2  - Polymer Bulletin
T1  - Enthalpy–entropy compensation and isoequilibrium relationship in thermo-chemical conversion of cigarette butt filters (CBFs) based on cellulose acetate (CA): causes and effects
DO  - 10.1007/s00289-024-05343-5
ER  - 
@article{
author = "Janković, Bojan and Marinović-Cincović, Milena and Manić, Nebojša and Janković, Marija and Waisi, Hadi and Dodevski, Vladimir",
year = "2024",
abstract = "The aim of this study is to explain the consequences of the occurrence of enthalpy–entropy compensation (EEC) and isoequilibrium relationship during slow pyrolysis of cigarette butt filters (CBFs), consisting cellulose acetate (AC) as the main component. By using model-free and model-based kinetic methods and thermodynamic calculations, the complete reaction mechanism and extrathermodynamic issues about investigated process are completely resolved. It was established that compensation phenomenon where isoequilibrium temperature occurs is a consequence of formation of low-entropy molecular structure (cellulose II) and breaking of hydrogen bonds. Consequently, it was concluded that mechanisms which include a formation of low-entropy molecular structure and H-bonds breakage enter the changes in both enthalpy and entropy, which compensate each other. For the cellulose II generation, it was necessary to invest energy which represents use up energy. This “wasted” energy turns into work for creation of cellulose II molecular structures, whereby additional energy was provided from “local” decomposition reactions (which were identified in the established process mechanism) that arise from pyrolysis of starting material. Therefore, it was concluded that for “local reactions”, a negative ΔS° value was identified, but for the global process, the entropy change retained a positive value. Considering thermodynamic effects manifested through compensation temperature found below glass transition temperature (Tg) in the undercooling conditions, it was concluded that small amounts of plasticizers affect reduction of free volume in the glassy state. Obtained results indicated a decrease in β-relaxation mode of cellulose acetate by an abatement of the polymer free volume.",
journal = "Polymer Bulletin",
title = "Enthalpy–entropy compensation and isoequilibrium relationship in thermo-chemical conversion of cigarette butt filters (CBFs) based on cellulose acetate (CA): causes and effects",
doi = "10.1007/s00289-024-05343-5"
}
Janković, B., Marinović-Cincović, M., Manić, N., Janković, M., Waisi, H.,& Dodevski, V.. (2024). Enthalpy–entropy compensation and isoequilibrium relationship in thermo-chemical conversion of cigarette butt filters (CBFs) based on cellulose acetate (CA): causes and effects. in Polymer Bulletin.
https://doi.org/10.1007/s00289-024-05343-5
Janković B, Marinović-Cincović M, Manić N, Janković M, Waisi H, Dodevski V. Enthalpy–entropy compensation and isoequilibrium relationship in thermo-chemical conversion of cigarette butt filters (CBFs) based on cellulose acetate (CA): causes and effects. in Polymer Bulletin. 2024;.
doi:10.1007/s00289-024-05343-5 .
Janković, Bojan, Marinović-Cincović, Milena, Manić, Nebojša, Janković, Marija, Waisi, Hadi, Dodevski, Vladimir, "Enthalpy–entropy compensation and isoequilibrium relationship in thermo-chemical conversion of cigarette butt filters (CBFs) based on cellulose acetate (CA): causes and effects" in Polymer Bulletin (2024),
https://doi.org/10.1007/s00289-024-05343-5 . .

Thermo-chemical conversion of cigarette butt filters waste through pyrolysis process using thermal analysis techniques

Božilović, Bojana; Janković, Bojan; Pijović-Radovanović, Milena; Waisi, Hadi; Marinović-Cincović, Milena; Krstić, Sanja; Dodevski, Vladimir

(2024)

TY  - JOUR
AU  - Božilović, Bojana
AU  - Janković, Bojan
AU  - Pijović-Radovanović, Milena
AU  - Waisi, Hadi
AU  - Marinović-Cincović, Milena
AU  - Krstić, Sanja
AU  - Dodevski, Vladimir
PY  - 2024
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/13215
AB  - Thermo-chemical conversion of cigarette butt filters (CBF) waste was investigated using various thermal analysis techniques (simultaneous TG-DTG-DTA and DSC methods) at different heating rates in an inert atmosphere. Thermo- and thermo-physical properties of waste material were discussed, from the point of view of chemical structure and the influence of experimental parameters on the conversion process. It was established that acetyl groups of plasticizer (triacetin) interact with cellulose acetate through dipolar interactions and hydrogen bonding’s. Influence of these polar interactions can affect the position of glass transition temperature, Tg, of CBF. Based on estimated value of Tg from DSC analysis, it was found that cellulose acetate present in CBF has degree of substitution equals to 2.8, where the presence of cellulose triacetate was confirmed. It was assumed that an increase of degree of substitution leads to decline in the crystallinity. A decline of crystal-linity causes the reduction of hydroxyl groups, leading to less organized chains, and whereby decreasing of inter-molecular interactions through hydrogen bond-ing. Based on the examination of thermophysical characteristics of the tested ma-terial, it was found that both, the heat capacity and the thermal inertia of material linearly increase with temperature, during pyrolysis progression. It was concluded that the type of bio-char produced in this process would have a large capacity to store the heat, which may depend on the formed particles size diameter and poros-ity. Furthermore, it was inferred that magnitude drops of thermal conductivity, κ, after Tg depends on the material fibrillation
T2  - Thermal Science
T1  - Thermo-chemical conversion of cigarette butt filters waste through pyrolysis process using thermal analysis techniques
VL  - 28
IS  - 1 Part B
SP  - 513
EP  - 527
DO  - 10.2298/TSCI230520153B
ER  - 
@article{
author = "Božilović, Bojana and Janković, Bojan and Pijović-Radovanović, Milena and Waisi, Hadi and Marinović-Cincović, Milena and Krstić, Sanja and Dodevski, Vladimir",
year = "2024",
abstract = "Thermo-chemical conversion of cigarette butt filters (CBF) waste was investigated using various thermal analysis techniques (simultaneous TG-DTG-DTA and DSC methods) at different heating rates in an inert atmosphere. Thermo- and thermo-physical properties of waste material were discussed, from the point of view of chemical structure and the influence of experimental parameters on the conversion process. It was established that acetyl groups of plasticizer (triacetin) interact with cellulose acetate through dipolar interactions and hydrogen bonding’s. Influence of these polar interactions can affect the position of glass transition temperature, Tg, of CBF. Based on estimated value of Tg from DSC analysis, it was found that cellulose acetate present in CBF has degree of substitution equals to 2.8, where the presence of cellulose triacetate was confirmed. It was assumed that an increase of degree of substitution leads to decline in the crystallinity. A decline of crystal-linity causes the reduction of hydroxyl groups, leading to less organized chains, and whereby decreasing of inter-molecular interactions through hydrogen bond-ing. Based on the examination of thermophysical characteristics of the tested ma-terial, it was found that both, the heat capacity and the thermal inertia of material linearly increase with temperature, during pyrolysis progression. It was concluded that the type of bio-char produced in this process would have a large capacity to store the heat, which may depend on the formed particles size diameter and poros-ity. Furthermore, it was inferred that magnitude drops of thermal conductivity, κ, after Tg depends on the material fibrillation",
journal = "Thermal Science",
title = "Thermo-chemical conversion of cigarette butt filters waste through pyrolysis process using thermal analysis techniques",
volume = "28",
number = "1 Part B",
pages = "513-527",
doi = "10.2298/TSCI230520153B"
}
Božilović, B., Janković, B., Pijović-Radovanović, M., Waisi, H., Marinović-Cincović, M., Krstić, S.,& Dodevski, V.. (2024). Thermo-chemical conversion of cigarette butt filters waste through pyrolysis process using thermal analysis techniques. in Thermal Science, 28(1 Part B), 513-527.
https://doi.org/10.2298/TSCI230520153B
Božilović B, Janković B, Pijović-Radovanović M, Waisi H, Marinović-Cincović M, Krstić S, Dodevski V. Thermo-chemical conversion of cigarette butt filters waste through pyrolysis process using thermal analysis techniques. in Thermal Science. 2024;28(1 Part B):513-527.
doi:10.2298/TSCI230520153B .
Božilović, Bojana, Janković, Bojan, Pijović-Radovanović, Milena, Waisi, Hadi, Marinović-Cincović, Milena, Krstić, Sanja, Dodevski, Vladimir, "Thermo-chemical conversion of cigarette butt filters waste through pyrolysis process using thermal analysis techniques" in Thermal Science, 28, no. 1 Part B (2024):513-527,
https://doi.org/10.2298/TSCI230520153B . .

Mechanical performance of denture acrylic resin modified with poly(4‐styrenesulfonic acid‐ co ‐maleic anhydride) sodium salt and strontium titanate

Elhmali, Houda Taher; Stajčić, Ivana; Petrović, Miloš; Janković, Bojan; Simović, Bojana; Stajčić, Aleksandar; Radojević, Vesna

(2024)

TY  - JOUR
AU  - Elhmali, Houda Taher
AU  - Stajčić, Ivana
AU  - Petrović, Miloš
AU  - Janković, Bojan
AU  - Simović, Bojana
AU  - Stajčić, Aleksandar
AU  - Radojević, Vesna
PY  - 2024
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/13288
AB  - Since acrylate-based materials are widely used in dentistry, their drawbacks such as low impact resistance and hardness, require continuous research in the field of materials science in order to avoid sudden fracture caused by chewing or fall. In this study, auto-polymerizing poly(methyl methacrylate) (PMMA), commonly used as denture base material, was reinforced with poly(4-styrenesulfonic acid-co-maleic anhydride) sodium salt (PSSMA) and strontium titanate (STO), with the aim of improving impact behavior and microhardness. Morphological analysis confirmed formation of phase-separated and co-continuous microscopic structures of PSSMA in PMMA, without visible agglomerates of STO nanoparticles, indicating that PSSMA-STO interaction contributed to a better distribution of nanoparticles. Fourier transformed infrared spectroscopy revealed that PSSMA and STO did not interfere in the polymerization of methyl methacrylate. This was further supported by thermal analysis, which also showed that the addition of PSSMA and STO had no significant influence on thermal degradation. On the other side, PSSMA and STO significantly enhanced mechanical performance of PMMA. The modulus of elasticity increased by up to 48.6%, total absorbed impact energy improved by up to 108.4%, and microhardness increased by up to 272.8% when PSSMA was combined with STO for reinforcing denture PMMA. These results demonstrate the significant potential of PSSMA, which could be combined with other ceramic nanoparticles for denture reinforcement in the future. Highlights: This research presents novel dental hybrid composite. Influence of strontium titanate (STO) and poly(4-styrenesulfonic acid-co-maleic anhydride) sodium salt (PSSMA) on poly(methyl methacrylate) (PMMA) was investigated. PSSMA/STO improved modulus of elasticity, microhardness and impact resistance. Sample with 5 wt% PSSMA and 1 wt% STO showed the highest improvement compared to PMMA. Presented hybrid composite could use as denture base material.
T2  - Polymer Composites
T1  - Mechanical performance of denture acrylic resin modified with poly(4‐styrenesulfonic acid‐                                          co                                        ‐maleic anhydride) sodium salt and strontium titanate
DO  - 10.1002/pc.28574
ER  - 
@article{
author = "Elhmali, Houda Taher and Stajčić, Ivana and Petrović, Miloš and Janković, Bojan and Simović, Bojana and Stajčić, Aleksandar and Radojević, Vesna",
year = "2024",
abstract = "Since acrylate-based materials are widely used in dentistry, their drawbacks such as low impact resistance and hardness, require continuous research in the field of materials science in order to avoid sudden fracture caused by chewing or fall. In this study, auto-polymerizing poly(methyl methacrylate) (PMMA), commonly used as denture base material, was reinforced with poly(4-styrenesulfonic acid-co-maleic anhydride) sodium salt (PSSMA) and strontium titanate (STO), with the aim of improving impact behavior and microhardness. Morphological analysis confirmed formation of phase-separated and co-continuous microscopic structures of PSSMA in PMMA, without visible agglomerates of STO nanoparticles, indicating that PSSMA-STO interaction contributed to a better distribution of nanoparticles. Fourier transformed infrared spectroscopy revealed that PSSMA and STO did not interfere in the polymerization of methyl methacrylate. This was further supported by thermal analysis, which also showed that the addition of PSSMA and STO had no significant influence on thermal degradation. On the other side, PSSMA and STO significantly enhanced mechanical performance of PMMA. The modulus of elasticity increased by up to 48.6%, total absorbed impact energy improved by up to 108.4%, and microhardness increased by up to 272.8% when PSSMA was combined with STO for reinforcing denture PMMA. These results demonstrate the significant potential of PSSMA, which could be combined with other ceramic nanoparticles for denture reinforcement in the future. Highlights: This research presents novel dental hybrid composite. Influence of strontium titanate (STO) and poly(4-styrenesulfonic acid-co-maleic anhydride) sodium salt (PSSMA) on poly(methyl methacrylate) (PMMA) was investigated. PSSMA/STO improved modulus of elasticity, microhardness and impact resistance. Sample with 5 wt% PSSMA and 1 wt% STO showed the highest improvement compared to PMMA. Presented hybrid composite could use as denture base material.",
journal = "Polymer Composites",
title = "Mechanical performance of denture acrylic resin modified with poly(4‐styrenesulfonic acid‐                                          co                                        ‐maleic anhydride) sodium salt and strontium titanate",
doi = "10.1002/pc.28574"
}
Elhmali, H. T., Stajčić, I., Petrović, M., Janković, B., Simović, B., Stajčić, A.,& Radojević, V.. (2024). Mechanical performance of denture acrylic resin modified with poly(4‐styrenesulfonic acid‐                                          co                                        ‐maleic anhydride) sodium salt and strontium titanate. in Polymer Composites.
https://doi.org/10.1002/pc.28574
Elhmali HT, Stajčić I, Petrović M, Janković B, Simović B, Stajčić A, Radojević V. Mechanical performance of denture acrylic resin modified with poly(4‐styrenesulfonic acid‐                                          co                                        ‐maleic anhydride) sodium salt and strontium titanate. in Polymer Composites. 2024;.
doi:10.1002/pc.28574 .
Elhmali, Houda Taher, Stajčić, Ivana, Petrović, Miloš, Janković, Bojan, Simović, Bojana, Stajčić, Aleksandar, Radojević, Vesna, "Mechanical performance of denture acrylic resin modified with poly(4‐styrenesulfonic acid‐                                          co                                        ‐maleic anhydride) sodium salt and strontium titanate" in Polymer Composites (2024),
https://doi.org/10.1002/pc.28574 . .

Combustion Behavior of Cellulose Ester Fibrous Bundles from Used Cigarette Filters: Kinetic Analysis Study

Veljković, Filip; Dodevski, Vladimir; Marinović-Cincović, Milena; Veličković, Suzana; Janković, Bojan Ž.

(2024)

TY  - JOUR
AU  - Veljković, Filip
AU  - Dodevski, Vladimir
AU  - Marinović-Cincović, Milena
AU  - Veličković, Suzana
AU  - Janković, Bojan Ž.
PY  - 2024
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/13292
AB  - This study is focused on the detailed examination of the combustion properties and kinetic analysis of a cellulose acetate fibrous bundle (CAFB), separated from used cigarette filters. It was shown that the faster rate of CAFB heating allows a large amount of heat to be supplied to a combustion system in the initial stages, where the increase in heating rate has a positive response to ignition behavior. The best combustion stability of CAFB is achieved at the lowest heating rate. Through the use of different kinetic methods, it was shown that combustion takes place through two series of consecutive reaction steps and one independent single-step reaction. By optimizing the kinetic parameters within the proposed reaction models, it was found that the steps related to the generation of levoglucosenone (LGO) (by catalytic dehydration of levoglucosan (LG)) and acrolein (by breakdown of glycerol during CAFB burning—which was carried out through glycerol adsorption on a TiO2 surface in a the developed dehydration mechanism) represent rate-controlling steps, which are strongly controlled by applied heating rate. Isothermal predictions have shown that CAFB manifests very good long-term stability at 60 °C (which corresponds to storage in a sea shipping container), while at 200 °C, it shows a sudden loss in thermal stability, which is related to the physical properties of the sample.
T2  - Polymers
T1  - Combustion Behavior of Cellulose Ester Fibrous Bundles from Used Cigarette Filters: Kinetic Analysis Study
VL  - 16
IS  - 11
SP  - 1480
DO  - 10.3390/polym16111480
ER  - 
@article{
author = "Veljković, Filip and Dodevski, Vladimir and Marinović-Cincović, Milena and Veličković, Suzana and Janković, Bojan Ž.",
year = "2024",
abstract = "This study is focused on the detailed examination of the combustion properties and kinetic analysis of a cellulose acetate fibrous bundle (CAFB), separated from used cigarette filters. It was shown that the faster rate of CAFB heating allows a large amount of heat to be supplied to a combustion system in the initial stages, where the increase in heating rate has a positive response to ignition behavior. The best combustion stability of CAFB is achieved at the lowest heating rate. Through the use of different kinetic methods, it was shown that combustion takes place through two series of consecutive reaction steps and one independent single-step reaction. By optimizing the kinetic parameters within the proposed reaction models, it was found that the steps related to the generation of levoglucosenone (LGO) (by catalytic dehydration of levoglucosan (LG)) and acrolein (by breakdown of glycerol during CAFB burning—which was carried out through glycerol adsorption on a TiO2 surface in a the developed dehydration mechanism) represent rate-controlling steps, which are strongly controlled by applied heating rate. Isothermal predictions have shown that CAFB manifests very good long-term stability at 60 °C (which corresponds to storage in a sea shipping container), while at 200 °C, it shows a sudden loss in thermal stability, which is related to the physical properties of the sample.",
journal = "Polymers",
title = "Combustion Behavior of Cellulose Ester Fibrous Bundles from Used Cigarette Filters: Kinetic Analysis Study",
volume = "16",
number = "11",
pages = "1480",
doi = "10.3390/polym16111480"
}
Veljković, F., Dodevski, V., Marinović-Cincović, M., Veličković, S.,& Janković, B. Ž.. (2024). Combustion Behavior of Cellulose Ester Fibrous Bundles from Used Cigarette Filters: Kinetic Analysis Study. in Polymers, 16(11), 1480.
https://doi.org/10.3390/polym16111480
Veljković F, Dodevski V, Marinović-Cincović M, Veličković S, Janković BŽ. Combustion Behavior of Cellulose Ester Fibrous Bundles from Used Cigarette Filters: Kinetic Analysis Study. in Polymers. 2024;16(11):1480.
doi:10.3390/polym16111480 .
Veljković, Filip, Dodevski, Vladimir, Marinović-Cincović, Milena, Veličković, Suzana, Janković, Bojan Ž., "Combustion Behavior of Cellulose Ester Fibrous Bundles from Used Cigarette Filters: Kinetic Analysis Study" in Polymers, 16, no. 11 (2024):1480,
https://doi.org/10.3390/polym16111480 . .

Thermal plasma gasification of sewage sludge: Optimisation of operating parameters and economic evaluation

Cvetinović, Dejan; Erić, Aleksandar; Mladenović, Milica; Buha-Marković, Jovana; Janković, Bojan

(2024)

TY  - JOUR
AU  - Cvetinović, Dejan
AU  - Erić, Aleksandar
AU  - Mladenović, Milica
AU  - Buha-Marković, Jovana
AU  - Janković, Bojan
PY  - 2024
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/13320
AB  - The article aims to define the optimal operating parameters of the gasifier such as temperature, equivalence ratio, steam-to-fuel ratio and selection of gasification medium for the process of thermal plasma gasification of sewage sludge. A comprehensive parametric study is carried out with the developed one-dimensional mathematical thermodynamic equilibrium model for plasma gasification. The model is based on the principle of the minimum of the Gibbs function and uses only the ultimate and proximate analysis data as input to the model. The output of the model is the equilibrium composition of the thermal plasma gasification products as a function of temperature in the plasma reactor. The parametric analysis has shown that the optimum conditions for the gasification process of sewage sludge are a temperature of 1200 K and an equivalence ratio of 0.2 for the air gasification case, i.e. 1200 K and the steam-to-fuel ratio of 0.1 for the case of steam gasification. When comparing the different gasification media, gasification with steam leads to a higher yield of H2 in the produced syngas. For the selected optimal conditions, the economic analysis of the process shows that the price of gasification per ton of sewage sludge is lower in the case of steam gasification and amounts to 72.30 €/t, compared to 88.12 €/t in the case of air gasification. The analysis was carried out using the example of a plant with a capacity of 360 kg/h. The sensitivity analysis was carried out taking into account the influence of the electricity price, labor costs, the price of CO2 emissions and the ash disposal price. The analysis shows that labor costs have the greatest influence on the price of thermal plasma gasification of sewage sludge.
T2  - Energy Conversion and Management
T1  - Thermal plasma gasification of sewage sludge: Optimisation of operating parameters and economic evaluation
VL  - 313
SP  - 118639
DO  - 10.1016/j.enconman.2024.118639
ER  - 
@article{
author = "Cvetinović, Dejan and Erić, Aleksandar and Mladenović, Milica and Buha-Marković, Jovana and Janković, Bojan",
year = "2024",
abstract = "The article aims to define the optimal operating parameters of the gasifier such as temperature, equivalence ratio, steam-to-fuel ratio and selection of gasification medium for the process of thermal plasma gasification of sewage sludge. A comprehensive parametric study is carried out with the developed one-dimensional mathematical thermodynamic equilibrium model for plasma gasification. The model is based on the principle of the minimum of the Gibbs function and uses only the ultimate and proximate analysis data as input to the model. The output of the model is the equilibrium composition of the thermal plasma gasification products as a function of temperature in the plasma reactor. The parametric analysis has shown that the optimum conditions for the gasification process of sewage sludge are a temperature of 1200 K and an equivalence ratio of 0.2 for the air gasification case, i.e. 1200 K and the steam-to-fuel ratio of 0.1 for the case of steam gasification. When comparing the different gasification media, gasification with steam leads to a higher yield of H2 in the produced syngas. For the selected optimal conditions, the economic analysis of the process shows that the price of gasification per ton of sewage sludge is lower in the case of steam gasification and amounts to 72.30 €/t, compared to 88.12 €/t in the case of air gasification. The analysis was carried out using the example of a plant with a capacity of 360 kg/h. The sensitivity analysis was carried out taking into account the influence of the electricity price, labor costs, the price of CO2 emissions and the ash disposal price. The analysis shows that labor costs have the greatest influence on the price of thermal plasma gasification of sewage sludge.",
journal = "Energy Conversion and Management",
title = "Thermal plasma gasification of sewage sludge: Optimisation of operating parameters and economic evaluation",
volume = "313",
pages = "118639",
doi = "10.1016/j.enconman.2024.118639"
}
Cvetinović, D., Erić, A., Mladenović, M., Buha-Marković, J.,& Janković, B.. (2024). Thermal plasma gasification of sewage sludge: Optimisation of operating parameters and economic evaluation. in Energy Conversion and Management, 313, 118639.
https://doi.org/10.1016/j.enconman.2024.118639
Cvetinović D, Erić A, Mladenović M, Buha-Marković J, Janković B. Thermal plasma gasification of sewage sludge: Optimisation of operating parameters and economic evaluation. in Energy Conversion and Management. 2024;313:118639.
doi:10.1016/j.enconman.2024.118639 .
Cvetinović, Dejan, Erić, Aleksandar, Mladenović, Milica, Buha-Marković, Jovana, Janković, Bojan, "Thermal plasma gasification of sewage sludge: Optimisation of operating parameters and economic evaluation" in Energy Conversion and Management, 313 (2024):118639,
https://doi.org/10.1016/j.enconman.2024.118639 . .
1

A comparative study on the slow pyrolysis of Miscanthus (Miscanthus×giganteus Greef et Deu.) cultivated on agricultural and contaminated soils: Assessment of distribution of final products

Perendija, Jovana; Cvetković, Slobodan; Manić, Nebojša; Andrejić, Gordana; Vukašinović, Ivana; Cvetinović, Dejan; Janković, Bojan

(2024)

TY  - JOUR
AU  - Perendija, Jovana
AU  - Cvetković, Slobodan
AU  - Manić, Nebojša
AU  - Andrejić, Gordana
AU  - Vukašinović, Ivana
AU  - Cvetinović, Dejan
AU  - Janković, Bojan
PY  - 2024
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/13705
AB  - This study aims to investigate the slow pyrolysis behavior of uncontaminated (MSC-I - reference) and heavy metals contaminated (MSC-R) samples with heavy metals from the tailings of a Pb-Zn-Cu flotation mine, consisting of whole stems of Miscanthus. Physicochemical properties of raw materials were investigated through instrumental characterization techniques (Atomic Absorption Spectrometry (AAS), Scanning Electron Microscopy (SEM), Fourier Transform Infrared (FTIR) spectroscopy, and X-ray diffraction (XRD)), while the pyrolysis process was monitored by simultaneous thermal analysis techniques (thermogravimetry (TG) – derivative thermogravimetry (DTG)), coupled with Mass spectrometry (MS), for evolved gas analysis. After determination of the lignocellulose content (cellulose, hemicellulose, and lignin) and extractive of the MSC-I and MSC-R samples, it was found that Pb, Zn, Fe, and Mn in MSC-R lead to very fast decomposition of extractive fraction, which facilitates their distribution in formed bio-char, together with lignin char-participation, acting catalytically. It was established that a much greater fraction of extractives decomposition products and non-volatile heavy metals are incorporated in MSC-R bio-char increasing its yield (23 %), compared to MSC-I bio-char yield (21.5 %). It was identified that MSC-R has increased production of H2, CO, and CO2, while decreased production of CH4, influenced by Fe (Fe has a significant positive effect on CO2 evaluation during MSC-R pyrolysis, enhancing decarboxylation process). It was established that CH4 reforming reactions catalyzed by iron additionally affect methane reduction, and increase production of H2, compared to the reference sample. Isoconversional kinetic analysis showed that pyrolysis reactions profile was strongly conditioned by the presence of heavy metals, such as Cd, Pb, and Zn, because they affect the modification of biomass lignocellulosic structure. Also, it was found that small amounts of Cd present in MSC-R can increase pyrolysis activation energy of three pseudo-components, and inhibit their deoxygenation, thus increasing yield of bio-char.
T2  - Industrial Crops and Products
T1  - A comparative study on the slow pyrolysis of Miscanthus (Miscanthus×giganteus Greef et Deu.) cultivated on agricultural and contaminated soils: Assessment of distribution of final products
VL  - 222
SP  - 119452
DO  - 10.1016/j.indcrop.2024.119452
ER  - 
@article{
author = "Perendija, Jovana and Cvetković, Slobodan and Manić, Nebojša and Andrejić, Gordana and Vukašinović, Ivana and Cvetinović, Dejan and Janković, Bojan",
year = "2024",
abstract = "This study aims to investigate the slow pyrolysis behavior of uncontaminated (MSC-I - reference) and heavy metals contaminated (MSC-R) samples with heavy metals from the tailings of a Pb-Zn-Cu flotation mine, consisting of whole stems of Miscanthus. Physicochemical properties of raw materials were investigated through instrumental characterization techniques (Atomic Absorption Spectrometry (AAS), Scanning Electron Microscopy (SEM), Fourier Transform Infrared (FTIR) spectroscopy, and X-ray diffraction (XRD)), while the pyrolysis process was monitored by simultaneous thermal analysis techniques (thermogravimetry (TG) – derivative thermogravimetry (DTG)), coupled with Mass spectrometry (MS), for evolved gas analysis. After determination of the lignocellulose content (cellulose, hemicellulose, and lignin) and extractive of the MSC-I and MSC-R samples, it was found that Pb, Zn, Fe, and Mn in MSC-R lead to very fast decomposition of extractive fraction, which facilitates their distribution in formed bio-char, together with lignin char-participation, acting catalytically. It was established that a much greater fraction of extractives decomposition products and non-volatile heavy metals are incorporated in MSC-R bio-char increasing its yield (23 %), compared to MSC-I bio-char yield (21.5 %). It was identified that MSC-R has increased production of H2, CO, and CO2, while decreased production of CH4, influenced by Fe (Fe has a significant positive effect on CO2 evaluation during MSC-R pyrolysis, enhancing decarboxylation process). It was established that CH4 reforming reactions catalyzed by iron additionally affect methane reduction, and increase production of H2, compared to the reference sample. Isoconversional kinetic analysis showed that pyrolysis reactions profile was strongly conditioned by the presence of heavy metals, such as Cd, Pb, and Zn, because they affect the modification of biomass lignocellulosic structure. Also, it was found that small amounts of Cd present in MSC-R can increase pyrolysis activation energy of three pseudo-components, and inhibit their deoxygenation, thus increasing yield of bio-char.",
journal = "Industrial Crops and Products",
title = "A comparative study on the slow pyrolysis of Miscanthus (Miscanthus×giganteus Greef et Deu.) cultivated on agricultural and contaminated soils: Assessment of distribution of final products",
volume = "222",
pages = "119452",
doi = "10.1016/j.indcrop.2024.119452"
}
Perendija, J., Cvetković, S., Manić, N., Andrejić, G., Vukašinović, I., Cvetinović, D.,& Janković, B.. (2024). A comparative study on the slow pyrolysis of Miscanthus (Miscanthus×giganteus Greef et Deu.) cultivated on agricultural and contaminated soils: Assessment of distribution of final products. in Industrial Crops and Products, 222, 119452.
https://doi.org/10.1016/j.indcrop.2024.119452
Perendija J, Cvetković S, Manić N, Andrejić G, Vukašinović I, Cvetinović D, Janković B. A comparative study on the slow pyrolysis of Miscanthus (Miscanthus×giganteus Greef et Deu.) cultivated on agricultural and contaminated soils: Assessment of distribution of final products. in Industrial Crops and Products. 2024;222:119452.
doi:10.1016/j.indcrop.2024.119452 .
Perendija, Jovana, Cvetković, Slobodan, Manić, Nebojša, Andrejić, Gordana, Vukašinović, Ivana, Cvetinović, Dejan, Janković, Bojan, "A comparative study on the slow pyrolysis of Miscanthus (Miscanthus×giganteus Greef et Deu.) cultivated on agricultural and contaminated soils: Assessment of distribution of final products" in Industrial Crops and Products, 222 (2024):119452,
https://doi.org/10.1016/j.indcrop.2024.119452 . .

Gross alpha and gross beta activity in leaves (Fig, Apricot and Wine)

Janković, Marija; Sarap, Nataša; Waisi, Hadi; Krneta Nikolić, Jelena; Rajačić, Milica; Vukanac, Ivana; Veljković, Filip; Janković, Bojan

(Belgrade : University „Union-Nikola Tesla”, 2023)

TY  - CONF
AU  - Janković, Marija
AU  - Sarap, Nataša
AU  - Waisi, Hadi
AU  - Krneta Nikolić, Jelena
AU  - Rajačić, Milica
AU  - Vukanac, Ivana
AU  - Veljković, Filip
AU  - Janković, Bojan
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12358
AB  - This paper presents the results for gross alpha and gross beta activity in leaves samples: Fig (Ficus carica), Vine (Vitis vinifera L.), and Apricot (Prunus armeniaca). Samples were collected in Iraq (Sulaymaniyah, Kurdistan region), and in the Serbia (Belgrade), in the summer 2018. The analysis was done in dried and milled samples as well as in the annealed samples, using gas flow proportional counter. Determination of gross alpha and gross beta activity presents rapid method, essential for the analysis of radioactivity in environmental samples. The gross alpha activity is defines as the total activity of alpha emitters, and originates from the decay chains of 238U and 232Th, which quantity depends on the geological and geographical formation of natural radionuclides. The main contributor to the gross beta activity is natural long-lived isotope 40K, as well as 210Pb, 228Ra. The gross beta measurements also include a contribution from anthropogenic radionuclides 137Cs and 90Sr. Radionuclides that emitting low-energy beta radiation (3 H and gaseous or volatile radionuclide such as iodine) cannot be detected by gross beta activity measurements.
PB  - Belgrade : University „Union-Nikola Tesla”
C3  - 3rd International Conference on Sustainable Environment and Technologies “Creating Sustainable CommUNiTy” : Proceedings
T1  - Gross alpha and gross beta activity in leaves (Fig, Apricot and Wine)
SP  - 309
EP  - 314
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12358
ER  - 
@conference{
author = "Janković, Marija and Sarap, Nataša and Waisi, Hadi and Krneta Nikolić, Jelena and Rajačić, Milica and Vukanac, Ivana and Veljković, Filip and Janković, Bojan",
year = "2023",
abstract = "This paper presents the results for gross alpha and gross beta activity in leaves samples: Fig (Ficus carica), Vine (Vitis vinifera L.), and Apricot (Prunus armeniaca). Samples were collected in Iraq (Sulaymaniyah, Kurdistan region), and in the Serbia (Belgrade), in the summer 2018. The analysis was done in dried and milled samples as well as in the annealed samples, using gas flow proportional counter. Determination of gross alpha and gross beta activity presents rapid method, essential for the analysis of radioactivity in environmental samples. The gross alpha activity is defines as the total activity of alpha emitters, and originates from the decay chains of 238U and 232Th, which quantity depends on the geological and geographical formation of natural radionuclides. The main contributor to the gross beta activity is natural long-lived isotope 40K, as well as 210Pb, 228Ra. The gross beta measurements also include a contribution from anthropogenic radionuclides 137Cs and 90Sr. Radionuclides that emitting low-energy beta radiation (3 H and gaseous or volatile radionuclide such as iodine) cannot be detected by gross beta activity measurements.",
publisher = "Belgrade : University „Union-Nikola Tesla”",
journal = "3rd International Conference on Sustainable Environment and Technologies “Creating Sustainable CommUNiTy” : Proceedings",
title = "Gross alpha and gross beta activity in leaves (Fig, Apricot and Wine)",
pages = "309-314",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12358"
}
Janković, M., Sarap, N., Waisi, H., Krneta Nikolić, J., Rajačić, M., Vukanac, I., Veljković, F.,& Janković, B.. (2023). Gross alpha and gross beta activity in leaves (Fig, Apricot and Wine). in 3rd International Conference on Sustainable Environment and Technologies “Creating Sustainable CommUNiTy” : Proceedings
Belgrade : University „Union-Nikola Tesla”., 309-314.
https://hdl.handle.net/21.15107/rcub_vinar_12358
Janković M, Sarap N, Waisi H, Krneta Nikolić J, Rajačić M, Vukanac I, Veljković F, Janković B. Gross alpha and gross beta activity in leaves (Fig, Apricot and Wine). in 3rd International Conference on Sustainable Environment and Technologies “Creating Sustainable CommUNiTy” : Proceedings. 2023;:309-314.
https://hdl.handle.net/21.15107/rcub_vinar_12358 .
Janković, Marija, Sarap, Nataša, Waisi, Hadi, Krneta Nikolić, Jelena, Rajačić, Milica, Vukanac, Ivana, Veljković, Filip, Janković, Bojan, "Gross alpha and gross beta activity in leaves (Fig, Apricot and Wine)" in 3rd International Conference on Sustainable Environment and Technologies “Creating Sustainable CommUNiTy” : Proceedings (2023):309-314,
https://hdl.handle.net/21.15107/rcub_vinar_12358 .

Effective ecological half-life of tritium in Danube - Kinetic approach

Janković, Marija; Sarap, Nataša; Krneta Nikolić, Jelena; Rajačić, Milica; Vukanac, Ivana; Šljivić-Ivanović, Marija; Janković, Bojan

(Belgrade : ETRAN Society, 2023)

TY  - CONF
AU  - Janković, Marija
AU  - Sarap, Nataša
AU  - Krneta Nikolić, Jelena
AU  - Rajačić, Milica
AU  - Vukanac, Ivana
AU  - Šljivić-Ivanović, Marija
AU  - Janković, Bojan
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12359
AB  - Determination of specific activity concentration of radioisotopes in environmental samples can be used to assess the long-term kinetics of the decline of radioisotopes. Based on the obtained activity concentrations of tritium in the Danube, the effective ecological half-life is estimated. Assuming that the Danube in Belgrade is not affected by nuclear power plants, even though it is positioned downstream of the Paks Nuclear Power Plant in Hungary, a slow decline of tritium was observed. The effective ecological half-life of tritium was also determined after correction by subtracting its components originating from cosmic radiation and the atmospheric transfer from nuclear facilities worldwide.
PB  - Belgrade : ETRAN Society
PB  - Belgrade : Academic Mind
C3  - IcETRAN 2023 : 10th Jubilee International Conference IcETRAN : Proceedings
T1  - Effective ecological half-life of tritium in Danube - Kinetic approach
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12359
ER  - 
@conference{
author = "Janković, Marija and Sarap, Nataša and Krneta Nikolić, Jelena and Rajačić, Milica and Vukanac, Ivana and Šljivić-Ivanović, Marija and Janković, Bojan",
year = "2023",
abstract = "Determination of specific activity concentration of radioisotopes in environmental samples can be used to assess the long-term kinetics of the decline of radioisotopes. Based on the obtained activity concentrations of tritium in the Danube, the effective ecological half-life is estimated. Assuming that the Danube in Belgrade is not affected by nuclear power plants, even though it is positioned downstream of the Paks Nuclear Power Plant in Hungary, a slow decline of tritium was observed. The effective ecological half-life of tritium was also determined after correction by subtracting its components originating from cosmic radiation and the atmospheric transfer from nuclear facilities worldwide.",
publisher = "Belgrade : ETRAN Society, Belgrade : Academic Mind",
journal = "IcETRAN 2023 : 10th Jubilee International Conference IcETRAN : Proceedings",
title = "Effective ecological half-life of tritium in Danube - Kinetic approach",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12359"
}
Janković, M., Sarap, N., Krneta Nikolić, J., Rajačić, M., Vukanac, I., Šljivić-Ivanović, M.,& Janković, B.. (2023). Effective ecological half-life of tritium in Danube - Kinetic approach. in IcETRAN 2023 : 10th Jubilee International Conference IcETRAN : Proceedings
Belgrade : ETRAN Society..
https://hdl.handle.net/21.15107/rcub_vinar_12359
Janković M, Sarap N, Krneta Nikolić J, Rajačić M, Vukanac I, Šljivić-Ivanović M, Janković B. Effective ecological half-life of tritium in Danube - Kinetic approach. in IcETRAN 2023 : 10th Jubilee International Conference IcETRAN : Proceedings. 2023;.
https://hdl.handle.net/21.15107/rcub_vinar_12359 .
Janković, Marija, Sarap, Nataša, Krneta Nikolić, Jelena, Rajačić, Milica, Vukanac, Ivana, Šljivić-Ivanović, Marija, Janković, Bojan, "Effective ecological half-life of tritium in Danube - Kinetic approach" in IcETRAN 2023 : 10th Jubilee International Conference IcETRAN : Proceedings (2023),
https://hdl.handle.net/21.15107/rcub_vinar_12359 .

Recovering of metals and metal oxides through thermal decomposition process of coal bottom ash: a comprehensive kinetic analysis

Janković, Bojan; Janković, Marija; Krneta Nikolić, Jelena; Rajačić, Milica; Vukanac, Ivana; Sarap, Nataša; Manić, Nebojša

(Budapest : Akadémiai Kiadó, 2023)

TY  - CONF
AU  - Janković, Bojan
AU  - Janković, Marija
AU  - Krneta Nikolić, Jelena
AU  - Rajačić, Milica
AU  - Vukanac, Ivana
AU  - Sarap, Nataša
AU  - Manić, Nebojša
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12589
AB  - In this work, the thermal decomposition process of coal bottom ash (collected after lignitecombustion in coal-fired power plant “Kostolac B” (TEKO-B), Serbia) was investigated, usingsimultaneous TG (thermogravimetry) – DTG (derivative thermogravimetry) techniquesin an inert (Ar) atmosphere, at various heating rates (10.3, 20.9 and 32.1 K/min). In additionto thermal characterization of the sample, the chemical composition and naturally occurredradionuclides were also determined. Using the model-free (isoconversional) (by Friedman(FR), Kissinger-Akahira-Sunose (KAS), Ozawa-Flynn-Wall (OFW) and Vyazovkin (VY)methods) analysis, the complex kinetic nature of the process was successfully resolved. Theconducted numerical optimization of the process (using non-linear least square optimization)had confirmed accuracy and reliability of estimated kinetic parameters. Model-based(model-fitting) kinetic analysis showed the existence of a complex reaction scheme, overtwo consecutive reactions steps and one single-stage reaction step, via mechanism order An,F2, Fn, R3, Cnm (through n-dimensional nucleation/growth, chemical reactions, and n-thorder and m-power with autocatalysis mechanisms). Through physicochemical interpretationof mechanism scheme, an assessment of recovery of valuable metals and metal oxides wasperformed, by analysing the concentration of reaction species in a function of temperature ofindividual steps. Likewise, the influence of certain precursor involved in decomposition processas catalyst (in order to increase the yield of targeted product) was also inspected. Finally,the simulation of actual process using the results obtained from applied methods/models wasperformed, through application of modulated dynamic (MD) prediction.
PB  - Budapest : Akadémiai Kiadó
C3  - JTACC 2023 : 3rd Journal of Thermal Analysis and Calorimetry Conference and 9th V4 (Joint Czech-Hungarian-Polish-Slovakian) Thermoanalytical Conference : Book of asbtracts
T1  - Recovering of metals and metal oxides through thermal decomposition process of coal bottom ash: a comprehensive kinetic analysis
SP  - 263
EP  - 263
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12589
ER  - 
@conference{
author = "Janković, Bojan and Janković, Marija and Krneta Nikolić, Jelena and Rajačić, Milica and Vukanac, Ivana and Sarap, Nataša and Manić, Nebojša",
year = "2023",
abstract = "In this work, the thermal decomposition process of coal bottom ash (collected after lignitecombustion in coal-fired power plant “Kostolac B” (TEKO-B), Serbia) was investigated, usingsimultaneous TG (thermogravimetry) – DTG (derivative thermogravimetry) techniquesin an inert (Ar) atmosphere, at various heating rates (10.3, 20.9 and 32.1 K/min). In additionto thermal characterization of the sample, the chemical composition and naturally occurredradionuclides were also determined. Using the model-free (isoconversional) (by Friedman(FR), Kissinger-Akahira-Sunose (KAS), Ozawa-Flynn-Wall (OFW) and Vyazovkin (VY)methods) analysis, the complex kinetic nature of the process was successfully resolved. Theconducted numerical optimization of the process (using non-linear least square optimization)had confirmed accuracy and reliability of estimated kinetic parameters. Model-based(model-fitting) kinetic analysis showed the existence of a complex reaction scheme, overtwo consecutive reactions steps and one single-stage reaction step, via mechanism order An,F2, Fn, R3, Cnm (through n-dimensional nucleation/growth, chemical reactions, and n-thorder and m-power with autocatalysis mechanisms). Through physicochemical interpretationof mechanism scheme, an assessment of recovery of valuable metals and metal oxides wasperformed, by analysing the concentration of reaction species in a function of temperature ofindividual steps. Likewise, the influence of certain precursor involved in decomposition processas catalyst (in order to increase the yield of targeted product) was also inspected. Finally,the simulation of actual process using the results obtained from applied methods/models wasperformed, through application of modulated dynamic (MD) prediction.",
publisher = "Budapest : Akadémiai Kiadó",
journal = "JTACC 2023 : 3rd Journal of Thermal Analysis and Calorimetry Conference and 9th V4 (Joint Czech-Hungarian-Polish-Slovakian) Thermoanalytical Conference : Book of asbtracts",
title = "Recovering of metals and metal oxides through thermal decomposition process of coal bottom ash: a comprehensive kinetic analysis",
pages = "263-263",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12589"
}
Janković, B., Janković, M., Krneta Nikolić, J., Rajačić, M., Vukanac, I., Sarap, N.,& Manić, N.. (2023). Recovering of metals and metal oxides through thermal decomposition process of coal bottom ash: a comprehensive kinetic analysis. in JTACC 2023 : 3rd Journal of Thermal Analysis and Calorimetry Conference and 9th V4 (Joint Czech-Hungarian-Polish-Slovakian) Thermoanalytical Conference : Book of asbtracts
Budapest : Akadémiai Kiadó., 263-263.
https://hdl.handle.net/21.15107/rcub_vinar_12589
Janković B, Janković M, Krneta Nikolić J, Rajačić M, Vukanac I, Sarap N, Manić N. Recovering of metals and metal oxides through thermal decomposition process of coal bottom ash: a comprehensive kinetic analysis. in JTACC 2023 : 3rd Journal of Thermal Analysis and Calorimetry Conference and 9th V4 (Joint Czech-Hungarian-Polish-Slovakian) Thermoanalytical Conference : Book of asbtracts. 2023;:263-263.
https://hdl.handle.net/21.15107/rcub_vinar_12589 .
Janković, Bojan, Janković, Marija, Krneta Nikolić, Jelena, Rajačić, Milica, Vukanac, Ivana, Sarap, Nataša, Manić, Nebojša, "Recovering of metals and metal oxides through thermal decomposition process of coal bottom ash: a comprehensive kinetic analysis" in JTACC 2023 : 3rd Journal of Thermal Analysis and Calorimetry Conference and 9th V4 (Joint Czech-Hungarian-Polish-Slovakian) Thermoanalytical Conference : Book of asbtracts (2023):263-263,
https://hdl.handle.net/21.15107/rcub_vinar_12589 .

Structural characterization of bio-modified epoxy resin by using MALDI-TOF

Stajčić, A.; Veljković, Filip; Veličković, Suzana; Janković, Marija; Janković, Bojan; Pijović, Milena; Stajčić, Ivana

(Belgrade : Serbian Chemical Society, 2023)

TY  - CONF
AU  - Stajčić, A.
AU  - Veljković, Filip
AU  - Veličković, Suzana
AU  - Janković, Marija
AU  - Janković, Bojan
AU  - Pijović, Milena
AU  - Stajčić, Ivana
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12598
AB  - Polymers and polymer composites have wide application in every industrial field, and are a subject of continuous research from different scientific aspects [1,2]. However, most commercial polymers are oil refinery based products. Recently, due to a growing concern for oil depletion, researchers have been focused on modification of polymers, as well as reinforcements [3,4]. Epoxy resin is the most commonly used adhesive that can be improved with fiber or particle reinforcements, or by using chemical modifiers. Modifying agents from renewable resources show potential in replacing oil-based compounds, because of their abundance, low price and heterogeneous structure that offers number of reactive groups [5]. In our research, honey was used as a bio-based modifier for diglycidyl ether of bisphenolA (DGEBA) based epoxy resin, with the aim of investigating structural changes. MALDI-TOF mass spectrometry [6] was used as a powerful technique that is able to reveal presence of functional groups and modified epoxy resin structure. In this manner, successful chemical modification of epoxy resin was confirmed, which further opened the path for the investigation of honey potential as epoxy modifying agent.
PB  - Belgrade : Serbian Chemical Society
C3  - 9th Symposium Chemistry and Environmental Protection : Book of Abstracts
T1  - Structural characterization of bio-modified epoxy resin by using MALDI-TOF
SP  - 99
EP  - 99
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12598
ER  - 
@conference{
author = "Stajčić, A. and Veljković, Filip and Veličković, Suzana and Janković, Marija and Janković, Bojan and Pijović, Milena and Stajčić, Ivana",
year = "2023",
abstract = "Polymers and polymer composites have wide application in every industrial field, and are a subject of continuous research from different scientific aspects [1,2]. However, most commercial polymers are oil refinery based products. Recently, due to a growing concern for oil depletion, researchers have been focused on modification of polymers, as well as reinforcements [3,4]. Epoxy resin is the most commonly used adhesive that can be improved with fiber or particle reinforcements, or by using chemical modifiers. Modifying agents from renewable resources show potential in replacing oil-based compounds, because of their abundance, low price and heterogeneous structure that offers number of reactive groups [5]. In our research, honey was used as a bio-based modifier for diglycidyl ether of bisphenolA (DGEBA) based epoxy resin, with the aim of investigating structural changes. MALDI-TOF mass spectrometry [6] was used as a powerful technique that is able to reveal presence of functional groups and modified epoxy resin structure. In this manner, successful chemical modification of epoxy resin was confirmed, which further opened the path for the investigation of honey potential as epoxy modifying agent.",
publisher = "Belgrade : Serbian Chemical Society",
journal = "9th Symposium Chemistry and Environmental Protection : Book of Abstracts",
title = "Structural characterization of bio-modified epoxy resin by using MALDI-TOF",
pages = "99-99",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12598"
}
Stajčić, A., Veljković, F., Veličković, S., Janković, M., Janković, B., Pijović, M.,& Stajčić, I.. (2023). Structural characterization of bio-modified epoxy resin by using MALDI-TOF. in 9th Symposium Chemistry and Environmental Protection : Book of Abstracts
Belgrade : Serbian Chemical Society., 99-99.
https://hdl.handle.net/21.15107/rcub_vinar_12598
Stajčić A, Veljković F, Veličković S, Janković M, Janković B, Pijović M, Stajčić I. Structural characterization of bio-modified epoxy resin by using MALDI-TOF. in 9th Symposium Chemistry and Environmental Protection : Book of Abstracts. 2023;:99-99.
https://hdl.handle.net/21.15107/rcub_vinar_12598 .
Stajčić, A., Veljković, Filip, Veličković, Suzana, Janković, Marija, Janković, Bojan, Pijović, Milena, Stajčić, Ivana, "Structural characterization of bio-modified epoxy resin by using MALDI-TOF" in 9th Symposium Chemistry and Environmental Protection : Book of Abstracts (2023):99-99,
https://hdl.handle.net/21.15107/rcub_vinar_12598 .

Procena upotrebe sojine slame u Mačvanskom okrugu za proizvodnju vodonika postupkom gasifikacije vodenom parom

Cvetković, Slobodan; Perendija, Jovana; Pavlović, Stefan; Janković, Bojan; Janković, Marija; Erić, Aleksandar; Cvetinović, Dejan

(Belgrade : Society of Thermal Engineers of Serbia, 2023)

TY  - CONF
AU  - Cvetković, Slobodan
AU  - Perendija, Jovana
AU  - Pavlović, Stefan
AU  - Janković, Bojan
AU  - Janković, Marija
AU  - Erić, Aleksandar
AU  - Cvetinović, Dejan
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12767
AB  - Jedna od najvažnijih stvari koje su čovečanstvu potrebne u savremenom svetu je dovoljna proizvodnja energije. Glavni izvor za proizvodnju energije koji se koristi u svetu su fosilna goriva, čija stalna potrošnja ne samo da šteti životnoj sredini već i ubrzava njihovo iscrpljivanje. Vodonik proizveden iz ostataka biomase može biti dobra opcija za proizvodnju čiste energije i smanjenje emisije gasova sa efektom staklene bašte u životnu sredinu. U ovom radu je proučavana mogućnost proizvodnje vodonika parnom gasifikacijom sojine slame u Mačvanskom okrugu u Republici Srbiji. Dodatno, procenjene su moguće primene potencijala vodonika u proizvodnji električne energije i drumskom saobraćaju. Dobijeni rezultati pokazuju da se gasifikacijom sojine slame u Mačvanskom okrugu može proizvesti 171,184 kg vodonika i 3,420,256 kWh električne energije. Procenjeni potencijal vodonika u Mačvanskom okrugu omogućava vozilima na vodonik da pređu 17,118,400 kilometara. Ovo istraživanje može doprineti integraciji uzgoja poljoprivrednih useva i vodonične ekonomije u Mačvanskom okrugu.
AB  - One of the most crucial things that humanity needs in the modern world is sufficient energy production. The main energy source used globally is fossil fuel, whose constant consumption not only harms the environment but also speeds up their depletion. Hydrogen produced from biomass residues can be a good option for clean energy production and the reduction of greenhouse gas emissions into the environment. In this paper, the possibility of hydrogen production by steam gasification of soybean straw in the Mačva region in the Republic of Serbia was studied. Additionally, possible applications of hydrogen potential in electricity production and road transport were assessed. The obtained results show that the gasification of soybean straw in the Mačva region can produce 171,184 kg of hydrogen and generate 3,420,256 kWh of electricity. The estimated hydrogen potential in the Mačva region allows hydrogen-powered vehicles to go 17,118,400 kilometers. This study can contribute to integrating crop cultivation and the hydrogen economy in the Mačva region.
PB  - Belgrade : Society of Thermal Engineers of Serbia
C3  - International Conference Power Plants 2023 : Proceedings
T1  - Procena upotrebe sojine slame u Mačvanskom okrugu za proizvodnju vodonika postupkom gasifikacije vodenom parom
T1  - Assessment of the use of soybean straw in the Mačva region for the production of hydrogen through the gasification process by water steam
SP  - 753
EP  - 762
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12767
ER  - 
@conference{
author = "Cvetković, Slobodan and Perendija, Jovana and Pavlović, Stefan and Janković, Bojan and Janković, Marija and Erić, Aleksandar and Cvetinović, Dejan",
year = "2023",
abstract = "Jedna od najvažnijih stvari koje su čovečanstvu potrebne u savremenom svetu je dovoljna proizvodnja energije. Glavni izvor za proizvodnju energije koji se koristi u svetu su fosilna goriva, čija stalna potrošnja ne samo da šteti životnoj sredini već i ubrzava njihovo iscrpljivanje. Vodonik proizveden iz ostataka biomase može biti dobra opcija za proizvodnju čiste energije i smanjenje emisije gasova sa efektom staklene bašte u životnu sredinu. U ovom radu je proučavana mogućnost proizvodnje vodonika parnom gasifikacijom sojine slame u Mačvanskom okrugu u Republici Srbiji. Dodatno, procenjene su moguće primene potencijala vodonika u proizvodnji električne energije i drumskom saobraćaju. Dobijeni rezultati pokazuju da se gasifikacijom sojine slame u Mačvanskom okrugu može proizvesti 171,184 kg vodonika i 3,420,256 kWh električne energije. Procenjeni potencijal vodonika u Mačvanskom okrugu omogućava vozilima na vodonik da pređu 17,118,400 kilometara. Ovo istraživanje može doprineti integraciji uzgoja poljoprivrednih useva i vodonične ekonomije u Mačvanskom okrugu., One of the most crucial things that humanity needs in the modern world is sufficient energy production. The main energy source used globally is fossil fuel, whose constant consumption not only harms the environment but also speeds up their depletion. Hydrogen produced from biomass residues can be a good option for clean energy production and the reduction of greenhouse gas emissions into the environment. In this paper, the possibility of hydrogen production by steam gasification of soybean straw in the Mačva region in the Republic of Serbia was studied. Additionally, possible applications of hydrogen potential in electricity production and road transport were assessed. The obtained results show that the gasification of soybean straw in the Mačva region can produce 171,184 kg of hydrogen and generate 3,420,256 kWh of electricity. The estimated hydrogen potential in the Mačva region allows hydrogen-powered vehicles to go 17,118,400 kilometers. This study can contribute to integrating crop cultivation and the hydrogen economy in the Mačva region.",
publisher = "Belgrade : Society of Thermal Engineers of Serbia",
journal = "International Conference Power Plants 2023 : Proceedings",
title = "Procena upotrebe sojine slame u Mačvanskom okrugu za proizvodnju vodonika postupkom gasifikacije vodenom parom, Assessment of the use of soybean straw in the Mačva region for the production of hydrogen through the gasification process by water steam",
pages = "753-762",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12767"
}
Cvetković, S., Perendija, J., Pavlović, S., Janković, B., Janković, M., Erić, A.,& Cvetinović, D.. (2023). Procena upotrebe sojine slame u Mačvanskom okrugu za proizvodnju vodonika postupkom gasifikacije vodenom parom. in International Conference Power Plants 2023 : Proceedings
Belgrade : Society of Thermal Engineers of Serbia., 753-762.
https://hdl.handle.net/21.15107/rcub_vinar_12767
Cvetković S, Perendija J, Pavlović S, Janković B, Janković M, Erić A, Cvetinović D. Procena upotrebe sojine slame u Mačvanskom okrugu za proizvodnju vodonika postupkom gasifikacije vodenom parom. in International Conference Power Plants 2023 : Proceedings. 2023;:753-762.
https://hdl.handle.net/21.15107/rcub_vinar_12767 .
Cvetković, Slobodan, Perendija, Jovana, Pavlović, Stefan, Janković, Bojan, Janković, Marija, Erić, Aleksandar, Cvetinović, Dejan, "Procena upotrebe sojine slame u Mačvanskom okrugu za proizvodnju vodonika postupkom gasifikacije vodenom parom" in International Conference Power Plants 2023 : Proceedings (2023):753-762,
https://hdl.handle.net/21.15107/rcub_vinar_12767 .

A model-based kinetic modelling approach for assessment of low-rank coal and biomass co-combustion characteristics

Radojević, Miloš; Janković, Bojan; Jovanović, Vladimir; Kazagić, Anes; Hodžić, Nihad; Kadić, Kenan; Stojiljković, Dragoslava; Manić, Nebojša; Wang, Xuebin

(Belgrade : Society of Thermal Engineers of Serbia, 2023)

TY  - CONF
AU  - Radojević, Miloš
AU  - Janković, Bojan
AU  - Jovanović, Vladimir
AU  - Kazagić, Anes
AU  - Hodžić, Nihad
AU  - Kadić, Kenan
AU  - Stojiljković, Dragoslava
AU  - Manić, Nebojša
AU  - Wang, Xuebin
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12362
AB  - Low-rank coal, characterized by its high moisture, ash, and volatile matter content, besides the significant contribution to GHG emission, can be challenging to combust efficiently. Biomass, on the other hand, is a renewable energy source that can enhance combustion performance and reduce emissions. The transition from fossil fuels to renewables should involve the co-combustion of coal and biomass which requires a detailed understanding of their individual and combined combustion kinetics. In this paper, the model-based kinetic modelling approach is applied to studying the thermal decomposition of coal and biomass using a combination of experimental data and mathematical models. By quantifying the rates at which various components of these fuels degraded and release heat, the optimization of process parameters, enhanced energy efficiency, and minimized environmental impacts could be achieved. The obtained results presented in the manuscript offers several advantages in comparison with the standard fuel characterization techniques. For example, the non-additive issues for different fuel characteristics could be overcome. Furthermore, the ability to predict combustion behaviour under different operating conditions, optimize burner designs, and develop cleaner combustion technologies could be enabled. In that sense, performed research in this paper could further supports the transition towards sustainable and carbon-neutral energy systems by harnessing the energy potential of low-rank coal while utilizing biomass as a clean and renewable co-fuel.
PB  - Belgrade : Society of Thermal Engineers of Serbia
C3  - International Conference Power Plants 2023 : Proceedings
T1  - A model-based kinetic modelling approach for assessment of low-rank coal and biomass co-combustion characteristics
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12362
ER  - 
@conference{
author = "Radojević, Miloš and Janković, Bojan and Jovanović, Vladimir and Kazagić, Anes and Hodžić, Nihad and Kadić, Kenan and Stojiljković, Dragoslava and Manić, Nebojša and Wang, Xuebin",
year = "2023",
abstract = "Low-rank coal, characterized by its high moisture, ash, and volatile matter content, besides the significant contribution to GHG emission, can be challenging to combust efficiently. Biomass, on the other hand, is a renewable energy source that can enhance combustion performance and reduce emissions. The transition from fossil fuels to renewables should involve the co-combustion of coal and biomass which requires a detailed understanding of their individual and combined combustion kinetics. In this paper, the model-based kinetic modelling approach is applied to studying the thermal decomposition of coal and biomass using a combination of experimental data and mathematical models. By quantifying the rates at which various components of these fuels degraded and release heat, the optimization of process parameters, enhanced energy efficiency, and minimized environmental impacts could be achieved. The obtained results presented in the manuscript offers several advantages in comparison with the standard fuel characterization techniques. For example, the non-additive issues for different fuel characteristics could be overcome. Furthermore, the ability to predict combustion behaviour under different operating conditions, optimize burner designs, and develop cleaner combustion technologies could be enabled. In that sense, performed research in this paper could further supports the transition towards sustainable and carbon-neutral energy systems by harnessing the energy potential of low-rank coal while utilizing biomass as a clean and renewable co-fuel.",
publisher = "Belgrade : Society of Thermal Engineers of Serbia",
journal = "International Conference Power Plants 2023 : Proceedings",
title = "A model-based kinetic modelling approach for assessment of low-rank coal and biomass co-combustion characteristics",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12362"
}
Radojević, M., Janković, B., Jovanović, V., Kazagić, A., Hodžić, N., Kadić, K., Stojiljković, D., Manić, N.,& Wang, X.. (2023). A model-based kinetic modelling approach for assessment of low-rank coal and biomass co-combustion characteristics. in International Conference Power Plants 2023 : Proceedings
Belgrade : Society of Thermal Engineers of Serbia..
https://hdl.handle.net/21.15107/rcub_vinar_12362
Radojević M, Janković B, Jovanović V, Kazagić A, Hodžić N, Kadić K, Stojiljković D, Manić N, Wang X. A model-based kinetic modelling approach for assessment of low-rank coal and biomass co-combustion characteristics. in International Conference Power Plants 2023 : Proceedings. 2023;.
https://hdl.handle.net/21.15107/rcub_vinar_12362 .
Radojević, Miloš, Janković, Bojan, Jovanović, Vladimir, Kazagić, Anes, Hodžić, Nihad, Kadić, Kenan, Stojiljković, Dragoslava, Manić, Nebojša, Wang, Xuebin, "A model-based kinetic modelling approach for assessment of low-rank coal and biomass co-combustion characteristics" in International Conference Power Plants 2023 : Proceedings (2023),
https://hdl.handle.net/21.15107/rcub_vinar_12362 .

Pregled katalitičke gasifikacije biomase pogodne za industriju u Republici Srbiji

Janković, Bojan; Janković, Marija; Cvetković, Slobodan; Manić, Nebojša; Pijović-Radovanović, Milena; Perendija, Jovana; Cvetinović, Dejan

(Belgrade : Society of Thermal Engineers of Serbia, 2023)

TY  - CONF
AU  - Janković, Bojan
AU  - Janković, Marija
AU  - Cvetković, Slobodan
AU  - Manić, Nebojša
AU  - Pijović-Radovanović, Milena
AU  - Perendija, Jovana
AU  - Cvetinović, Dejan
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12363
AB  - Biomasa se smatra važnim obnovljivim resursom, koji igra ključnu ulogu u razvoju održivih energetskih sistema. Biomasa se može pretvoriti u energiju ili vredne hemikalije sagorevanjem, utečnjavanjem, pirolizom i gasifikacijom. Među ovim procesima, termička gasifikacija ‛razlaže’ biomasu u lake hemijske vrste na visokim temperaturama, koje se mogu primeniti na biomasu sa najvećom raznovrsnošću. Kao krajnji (ciljni) proizvod gasifikacije biomase, singas ili gas bogat vodonikom (H2), su veoma važni međuproizvodi u petrohemijskoj industriji. Međutim, problematični katran koji se proizvodi tokom gasifikacije mogao bi da donese niz problema. Katalitička gasifikacija biomase je obećavajuća strategija za značajno ublažavanje ovih problema. Katalizatori na bazi prelaznih metala za katalitičku gasifikaciju biomase proučavani su poslednjih decenija. U ovom pregledu se razmatraju različiti katalizatori prelaznih metala za gasifikaciju biomase, uključujući monometalne i bimetalne katalizatore na bazi nikla (Ni) i druge katalizatore na bazi Fe i Pt. Performanse ovih katalizatora su bile procenjene na osnovu primenjenih parametara reakcije, kvaliteta proizvedenog singasa i učinkovitosti u smanjenju katrana. Sumirane su primena DFT (‛funkcionalne teorije gustine’) proračuna i AI (‛veštačke inteligencije’) za proučavanje mehanizama gasifikacije biomase, a takođe je bio i razmatran uzrok deaktivacije katalizatora i regeneracije istrošenih katalizatora. Isto tako, u ovom pregledu, razmotren je potencijal razvoja katalitičke gasifikacije biomase u Republici Srbiji.
AB  - Biomass is considered as an important renewable resource, which plays a key role in the development of sustainable energy systems. Biomass can be converted into energy or valuable chemicals by combustion, liquefaction, pyrolysis and gasification. Among these processes, thermal gasification “decomposes” biomass into the light chemical species at high temperatures, which can be applied to biomass with the greatest diversity. As the final (target) product of biomass gasification, syngas or gas rich in hydrogen (H2), are very important intermediate products in the petrochemical industry. However, the problematic tar produced during gasification could bring a number of problems. Catalytic biomass gasification is a promising strategy to significantly alleviate these problems. Transition metal-based catalysts for catalytic biomass gasification have been studied in recent decades. This review discusses various transition metal catalysts for biomass gasification, including nickel (Ni)-based monometallic and bimetallic catalysts and other Fe- and Pt-based catalysts. The performance of these catalysts is evaluated based on the applied reaction parameters, the quality of the syngas produced, and the tar reduction performance. Applications of DFT (‛Density Functional Theory’) calculations and AI (‛Artificial Intelligence’) to study biomass gasification mechanisms are summarized, and the cause of catalyst deactivation and regeneration of spent catalysts are also discussed. Likewise, in this review, the development potential of catalytic gasification of biomass in the Republic of Serbia was considered.
PB  - Belgrade : Society of Thermal Engineers of Serbia
C3  - International Conference Power Plants 2023 : Proceedings
T1  - Pregled katalitičke gasifikacije biomase pogodne za industriju u Republici Srbiji
T1  - Overview of catalytic gasification of biomass suitable for industry in the Republic of Serbia
SP  - 910
EP  - 921
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12363
ER  - 
@conference{
author = "Janković, Bojan and Janković, Marija and Cvetković, Slobodan and Manić, Nebojša and Pijović-Radovanović, Milena and Perendija, Jovana and Cvetinović, Dejan",
year = "2023",
abstract = "Biomasa se smatra važnim obnovljivim resursom, koji igra ključnu ulogu u razvoju održivih energetskih sistema. Biomasa se može pretvoriti u energiju ili vredne hemikalije sagorevanjem, utečnjavanjem, pirolizom i gasifikacijom. Među ovim procesima, termička gasifikacija ‛razlaže’ biomasu u lake hemijske vrste na visokim temperaturama, koje se mogu primeniti na biomasu sa najvećom raznovrsnošću. Kao krajnji (ciljni) proizvod gasifikacije biomase, singas ili gas bogat vodonikom (H2), su veoma važni međuproizvodi u petrohemijskoj industriji. Međutim, problematični katran koji se proizvodi tokom gasifikacije mogao bi da donese niz problema. Katalitička gasifikacija biomase je obećavajuća strategija za značajno ublažavanje ovih problema. Katalizatori na bazi prelaznih metala za katalitičku gasifikaciju biomase proučavani su poslednjih decenija. U ovom pregledu se razmatraju različiti katalizatori prelaznih metala za gasifikaciju biomase, uključujući monometalne i bimetalne katalizatore na bazi nikla (Ni) i druge katalizatore na bazi Fe i Pt. Performanse ovih katalizatora su bile procenjene na osnovu primenjenih parametara reakcije, kvaliteta proizvedenog singasa i učinkovitosti u smanjenju katrana. Sumirane su primena DFT (‛funkcionalne teorije gustine’) proračuna i AI (‛veštačke inteligencije’) za proučavanje mehanizama gasifikacije biomase, a takođe je bio i razmatran uzrok deaktivacije katalizatora i regeneracije istrošenih katalizatora. Isto tako, u ovom pregledu, razmotren je potencijal razvoja katalitičke gasifikacije biomase u Republici Srbiji., Biomass is considered as an important renewable resource, which plays a key role in the development of sustainable energy systems. Biomass can be converted into energy or valuable chemicals by combustion, liquefaction, pyrolysis and gasification. Among these processes, thermal gasification “decomposes” biomass into the light chemical species at high temperatures, which can be applied to biomass with the greatest diversity. As the final (target) product of biomass gasification, syngas or gas rich in hydrogen (H2), are very important intermediate products in the petrochemical industry. However, the problematic tar produced during gasification could bring a number of problems. Catalytic biomass gasification is a promising strategy to significantly alleviate these problems. Transition metal-based catalysts for catalytic biomass gasification have been studied in recent decades. This review discusses various transition metal catalysts for biomass gasification, including nickel (Ni)-based monometallic and bimetallic catalysts and other Fe- and Pt-based catalysts. The performance of these catalysts is evaluated based on the applied reaction parameters, the quality of the syngas produced, and the tar reduction performance. Applications of DFT (‛Density Functional Theory’) calculations and AI (‛Artificial Intelligence’) to study biomass gasification mechanisms are summarized, and the cause of catalyst deactivation and regeneration of spent catalysts are also discussed. Likewise, in this review, the development potential of catalytic gasification of biomass in the Republic of Serbia was considered.",
publisher = "Belgrade : Society of Thermal Engineers of Serbia",
journal = "International Conference Power Plants 2023 : Proceedings",
title = "Pregled katalitičke gasifikacije biomase pogodne za industriju u Republici Srbiji, Overview of catalytic gasification of biomass suitable for industry in the Republic of Serbia",
pages = "910-921",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12363"
}
Janković, B., Janković, M., Cvetković, S., Manić, N., Pijović-Radovanović, M., Perendija, J.,& Cvetinović, D.. (2023). Pregled katalitičke gasifikacije biomase pogodne za industriju u Republici Srbiji. in International Conference Power Plants 2023 : Proceedings
Belgrade : Society of Thermal Engineers of Serbia., 910-921.
https://hdl.handle.net/21.15107/rcub_vinar_12363
Janković B, Janković M, Cvetković S, Manić N, Pijović-Radovanović M, Perendija J, Cvetinović D. Pregled katalitičke gasifikacije biomase pogodne za industriju u Republici Srbiji. in International Conference Power Plants 2023 : Proceedings. 2023;:910-921.
https://hdl.handle.net/21.15107/rcub_vinar_12363 .
Janković, Bojan, Janković, Marija, Cvetković, Slobodan, Manić, Nebojša, Pijović-Radovanović, Milena, Perendija, Jovana, Cvetinović, Dejan, "Pregled katalitičke gasifikacije biomase pogodne za industriju u Republici Srbiji" in International Conference Power Plants 2023 : Proceedings (2023):910-921,
https://hdl.handle.net/21.15107/rcub_vinar_12363 .

Ispitivanje LIF/B sistema korišćenjem negativnog moda LDI MS: mogući sistem za skladištenje vodonika

Veljković, Filip; Janković, Bojan; Stajčić, Ivana; Stoiljković, Milovan; Janković, Marija; Kapuran, Đorđe; Veličković, Suzana

(Belgrade : Union of Mechanical and Electrotechnical Engineers and Technicians of Serbia (SMEITS) : Society for Renewable Electrical Power Sources , 2023)

TY  - CONF
AU  - Veljković, Filip
AU  - Janković, Bojan
AU  - Stajčić, Ivana
AU  - Stoiljković, Milovan
AU  - Janković, Marija
AU  - Kapuran, Đorđe
AU  - Veličković, Suzana
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12570
AB  - Mnogi teorijski proračuni su pokazali da su litijumom dekorisni borani (BxHy) ili klasteri bora (Bn) potencijalni materijali za skladištenje vodonika. Pored toga, pokazalo se da klasteri litijumfluorida poboljšavaju kapacitet skladištenja vodonika bolje od samog litijuma. Međutim, broj eksperimentalnih studija je mnogo manji. Zbog toga je u ovom radu ispitivana mogućnost interakcije klastera litijuma ili litijumfluorida sa boranima, metodom laserske desorpcione/jonizacione masenespektrometrije (LDI MS). Preliminarni rezultati su pokazali da negativni mod LDI maseni spektri suspenzije LiF/B (1:3) u dejonizovanoj vodi sadrži Li2(BH18) - , LiF2(BH3) - , LiB2(BH3)2 - , LiF2LiB(BH4)2 - jone. Smanjenje sadržaja bora u LiF/B sistemu (1:1) rezultira malo izmenjenim masenim spektrom. Intenzitet Li2(BH18) - i LiF2(BH3) - opada, dok druga dva jona pokazuju blago izmenjen sastav: Li2F(B3H2) - i LiF2(BH5)3 - . Rezultati pokazuju da klasteri Li2 i “superhalogen” LiF2 mogu da interaguju sa boranima. U oba slučaja, najintenzivniji joni su bili kompleksi između „superhalogena“-LiF2 i borana.
AB  - Many theoretical calculations have shown that lithium decoration of borane (BxHy) or boron (Bn) clusters are potential materials for hydrogen storage. In addition, lithium fluoride clusters have been shown to improve hydrogen storage capacity better than lithium itself. However, the number of experimental studies is much smaller. Therefore, in this work, the possibility of interaction of lithium or lithium fluoride clusters with boranes was investigated by laser desorption/ionization mass spectrometry (LDI MS). The preliminary results have shown that the negative mode LDI mass spectra of the suspension of LiF/B (1:3) in deionized water include Li2(BH18) - , LiF2(BH3) - , LiB2(BH3)2 -  LiF2LiB(BH4)2 -  ions. The reducing the boron content in the LiF/B system (1:1) results in a little changed mass spectrum. The intensities of Li2(BH18) -  and LiF2(BH3) -  decrease, while two other ions show a slightly changed composition: Li2F(B3H2) -  and LiF2(BH5)3 - . The results show that the Li2 and “superhalogen” LiF2 clusters can interact with boranes. In both cases, the most intense ions were complexes between “superhalogen”-LiF2 and boranes.
PB  - Belgrade : Union of Mechanical and
Electrotechnical Engineers and
Technicians of Serbia (SMEITS) : Society for Renewable Electrical Power Sources 
C3  - 11th International Conference on Renewable Electrical Power Sources : Proceedings
T1  - Ispitivanje LIF/B sistema korišćenjem negativnog moda LDI MS: mogući sistem za skladištenje vodonika
T1  - Investigation of LIF/B system using the negative mode LDI MS: a possible hydrogen storage system
SP  - 115
EP  - 118
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12570
ER  - 
@conference{
author = "Veljković, Filip and Janković, Bojan and Stajčić, Ivana and Stoiljković, Milovan and Janković, Marija and Kapuran, Đorđe and Veličković, Suzana",
year = "2023",
abstract = "Mnogi teorijski proračuni su pokazali da su litijumom dekorisni borani (BxHy) ili klasteri bora (Bn) potencijalni materijali za skladištenje vodonika. Pored toga, pokazalo se da klasteri litijumfluorida poboljšavaju kapacitet skladištenja vodonika bolje od samog litijuma. Međutim, broj eksperimentalnih studija je mnogo manji. Zbog toga je u ovom radu ispitivana mogućnost interakcije klastera litijuma ili litijumfluorida sa boranima, metodom laserske desorpcione/jonizacione masenespektrometrije (LDI MS). Preliminarni rezultati su pokazali da negativni mod LDI maseni spektri suspenzije LiF/B (1:3) u dejonizovanoj vodi sadrži Li2(BH18) - , LiF2(BH3) - , LiB2(BH3)2 - , LiF2LiB(BH4)2 - jone. Smanjenje sadržaja bora u LiF/B sistemu (1:1) rezultira malo izmenjenim masenim spektrom. Intenzitet Li2(BH18) - i LiF2(BH3) - opada, dok druga dva jona pokazuju blago izmenjen sastav: Li2F(B3H2) - i LiF2(BH5)3 - . Rezultati pokazuju da klasteri Li2 i “superhalogen” LiF2 mogu da interaguju sa boranima. U oba slučaja, najintenzivniji joni su bili kompleksi između „superhalogena“-LiF2 i borana., Many theoretical calculations have shown that lithium decoration of borane (BxHy) or boron (Bn) clusters are potential materials for hydrogen storage. In addition, lithium fluoride clusters have been shown to improve hydrogen storage capacity better than lithium itself. However, the number of experimental studies is much smaller. Therefore, in this work, the possibility of interaction of lithium or lithium fluoride clusters with boranes was investigated by laser desorption/ionization mass spectrometry (LDI MS). The preliminary results have shown that the negative mode LDI mass spectra of the suspension of LiF/B (1:3) in deionized water include Li2(BH18) - , LiF2(BH3) - , LiB2(BH3)2 -  LiF2LiB(BH4)2 -  ions. The reducing the boron content in the LiF/B system (1:1) results in a little changed mass spectrum. The intensities of Li2(BH18) -  and LiF2(BH3) -  decrease, while two other ions show a slightly changed composition: Li2F(B3H2) -  and LiF2(BH5)3 - . The results show that the Li2 and “superhalogen” LiF2 clusters can interact with boranes. In both cases, the most intense ions were complexes between “superhalogen”-LiF2 and boranes.",
publisher = "Belgrade : Union of Mechanical and
Electrotechnical Engineers and
Technicians of Serbia (SMEITS) : Society for Renewable Electrical Power Sources ",
journal = "11th International Conference on Renewable Electrical Power Sources : Proceedings",
title = "Ispitivanje LIF/B sistema korišćenjem negativnog moda LDI MS: mogući sistem za skladištenje vodonika, Investigation of LIF/B system using the negative mode LDI MS: a possible hydrogen storage system",
pages = "115-118",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12570"
}
Veljković, F., Janković, B., Stajčić, I., Stoiljković, M., Janković, M., Kapuran, Đ.,& Veličković, S.. (2023). Ispitivanje LIF/B sistema korišćenjem negativnog moda LDI MS: mogući sistem za skladištenje vodonika. in 11th International Conference on Renewable Electrical Power Sources : Proceedings
Belgrade : Union of Mechanical and
Electrotechnical Engineers and
Technicians of Serbia (SMEITS) : Society for Renewable Electrical Power Sources ., 115-118.
https://hdl.handle.net/21.15107/rcub_vinar_12570
Veljković F, Janković B, Stajčić I, Stoiljković M, Janković M, Kapuran Đ, Veličković S. Ispitivanje LIF/B sistema korišćenjem negativnog moda LDI MS: mogući sistem za skladištenje vodonika. in 11th International Conference on Renewable Electrical Power Sources : Proceedings. 2023;:115-118.
https://hdl.handle.net/21.15107/rcub_vinar_12570 .
Veljković, Filip, Janković, Bojan, Stajčić, Ivana, Stoiljković, Milovan, Janković, Marija, Kapuran, Đorđe, Veličković, Suzana, "Ispitivanje LIF/B sistema korišćenjem negativnog moda LDI MS: mogući sistem za skladištenje vodonika" in 11th International Conference on Renewable Electrical Power Sources : Proceedings (2023):115-118,
https://hdl.handle.net/21.15107/rcub_vinar_12570 .

Co-Pyrolysis Process of Coal and Waste: Synergistic Effect and Influence of Microscale Conditions

Brat, Zagorka; Janković, Bojan; Stojiljković, Dragoslava; Vujanović, Milan; Wang, Xuebin; Manić, Nebojša

(SDEWES - International Centre for Sustainable Development of Energy, Water and Environment Systems, 2023)

TY  - CONF
AU  - Brat, Zagorka
AU  - Janković, Bojan
AU  - Stojiljković, Dragoslava
AU  - Vujanović, Milan
AU  - Wang, Xuebin
AU  - Manić, Nebojša
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12612
AB  - The pyrolysis process of two low-rank coals (lignite Kostolac and Kolubara), and two wastematerials (spent coffee ground and tyre rubber granulate) as well as their blends, have beenexamined by preliminary thermogravimetric analysis. Thermal decomposition experiments wereperformed in an N2 atmosphere on raw (pyrolysis) and blend (co-pyrolysis) samples at heatingrates of 10, 15, and 20 K min-1. The lignite-waste blend was created in the following masspercentage ratios 90:10, 80:20, and 70:30. Based on obtained experimental data, the stronginteractions were identified between the examined lignite and waste materials during copyrolysis,indicating the presence of a positive synergistic effect. The characteristics of the rawwaste sample and the heating rate were recognized as two key parameters that influenced thesynergy result with lignite sample, in lignite-spent coffee ground blends. For lignite-waste rubbergranulate blends, the blending ratio is critical for beneficial synergistic effect (ratios of wasterubber granulate with lignite less than 30% are preferred). The probable synergistic mechanismswere further explained using performed kinetic analysis by varying the effective activation energywith temperature and conversion. In addition, the influence of micro-scale conditioncharacteristics such as heating rate (as the experimental regulatory factor) on the magnituderesponse of synergistic effect during co-pyrolysis was also investigated in this work.
PB  - SDEWES - International Centre for Sustainable Development of Energy, Water and Environment Systems
PB  - Zagreb : Faculty of Mechanical Engineering and Naval Architecture
C3  - 18th Conference on Sustainable Development of Energy, Water and Environment Systems : Proceedings
T1  - Co-Pyrolysis Process of Coal and Waste: Synergistic Effect and Influence of Microscale Conditions
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12612
ER  - 
@conference{
author = "Brat, Zagorka and Janković, Bojan and Stojiljković, Dragoslava and Vujanović, Milan and Wang, Xuebin and Manić, Nebojša",
year = "2023",
abstract = "The pyrolysis process of two low-rank coals (lignite Kostolac and Kolubara), and two wastematerials (spent coffee ground and tyre rubber granulate) as well as their blends, have beenexamined by preliminary thermogravimetric analysis. Thermal decomposition experiments wereperformed in an N2 atmosphere on raw (pyrolysis) and blend (co-pyrolysis) samples at heatingrates of 10, 15, and 20 K min-1. The lignite-waste blend was created in the following masspercentage ratios 90:10, 80:20, and 70:30. Based on obtained experimental data, the stronginteractions were identified between the examined lignite and waste materials during copyrolysis,indicating the presence of a positive synergistic effect. The characteristics of the rawwaste sample and the heating rate were recognized as two key parameters that influenced thesynergy result with lignite sample, in lignite-spent coffee ground blends. For lignite-waste rubbergranulate blends, the blending ratio is critical for beneficial synergistic effect (ratios of wasterubber granulate with lignite less than 30% are preferred). The probable synergistic mechanismswere further explained using performed kinetic analysis by varying the effective activation energywith temperature and conversion. In addition, the influence of micro-scale conditioncharacteristics such as heating rate (as the experimental regulatory factor) on the magnituderesponse of synergistic effect during co-pyrolysis was also investigated in this work.",
publisher = "SDEWES - International Centre for Sustainable Development of Energy, Water and Environment Systems, Zagreb : Faculty of Mechanical Engineering and Naval Architecture",
journal = "18th Conference on Sustainable Development of Energy, Water and Environment Systems : Proceedings",
title = "Co-Pyrolysis Process of Coal and Waste: Synergistic Effect and Influence of Microscale Conditions",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12612"
}
Brat, Z., Janković, B., Stojiljković, D., Vujanović, M., Wang, X.,& Manić, N.. (2023). Co-Pyrolysis Process of Coal and Waste: Synergistic Effect and Influence of Microscale Conditions. in 18th Conference on Sustainable Development of Energy, Water and Environment Systems : Proceedings
SDEWES - International Centre for Sustainable Development of Energy, Water and Environment Systems..
https://hdl.handle.net/21.15107/rcub_vinar_12612
Brat Z, Janković B, Stojiljković D, Vujanović M, Wang X, Manić N. Co-Pyrolysis Process of Coal and Waste: Synergistic Effect and Influence of Microscale Conditions. in 18th Conference on Sustainable Development of Energy, Water and Environment Systems : Proceedings. 2023;.
https://hdl.handle.net/21.15107/rcub_vinar_12612 .
Brat, Zagorka, Janković, Bojan, Stojiljković, Dragoslava, Vujanović, Milan, Wang, Xuebin, Manić, Nebojša, "Co-Pyrolysis Process of Coal and Waste: Synergistic Effect and Influence of Microscale Conditions" in 18th Conference on Sustainable Development of Energy, Water and Environment Systems : Proceedings (2023),
https://hdl.handle.net/21.15107/rcub_vinar_12612 .

Gasification of Sewage Sludge: Thermodynamic Equilibrium Modeling

Cvetinović, Dejan; Milutinović, Nada; Erić, Aleksandar; Manić, Nebojša; Bakić, Vukman; Janković, Bojan

(SDEWES - International Centre for Sustainable Development of Energy, Water and Environment Systems, 2023)

TY  - CONF
AU  - Cvetinović, Dejan
AU  - Milutinović, Nada
AU  - Erić, Aleksandar
AU  - Manić, Nebojša
AU  - Bakić, Vukman
AU  - Janković, Bojan
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12613
AB  - The aim of the article is to show the effects of the main gasifier operating parameters, such as temperature, equivalence ratio, steam-to-fuel ratio, and gasification medium selection, on the gasification performance of sewage sludge. Using the developed one-dimensional mathematical thermodynamic equilibrium model for plasma and fluidized bed gasification, a comprehensive parametric study is established. The model is based on the principle of the minimum of the Gibbs function and uses only the ultimate and proximate analysis data as input to the model. The output of the model gives the equilibrium composition of the gasses produced. When comparing different gasification media, gasification with water steam gives a higher yield of H2 and CO in the syngas produced. Further comparison of the two gasification processes in terms of energy consumption is shown. The collected results can be useful in further analysis of the gasification processes, such as energy and exergy analysis and kinetics.
PB  - SDEWES - International Centre for Sustainable Development of Energy, Water and Environment Systems
PB  - Zagreb : Faculty of Mechanical Engineering and Naval Architecture
C3  - 18th Conference on Sustainable Development of Energy, Water and Environment Systems : Proceedings
T1  - Gasification of Sewage Sludge: Thermodynamic Equilibrium Modeling
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12613
ER  - 
@conference{
author = "Cvetinović, Dejan and Milutinović, Nada and Erić, Aleksandar and Manić, Nebojša and Bakić, Vukman and Janković, Bojan",
year = "2023",
abstract = "The aim of the article is to show the effects of the main gasifier operating parameters, such as temperature, equivalence ratio, steam-to-fuel ratio, and gasification medium selection, on the gasification performance of sewage sludge. Using the developed one-dimensional mathematical thermodynamic equilibrium model for plasma and fluidized bed gasification, a comprehensive parametric study is established. The model is based on the principle of the minimum of the Gibbs function and uses only the ultimate and proximate analysis data as input to the model. The output of the model gives the equilibrium composition of the gasses produced. When comparing different gasification media, gasification with water steam gives a higher yield of H2 and CO in the syngas produced. Further comparison of the two gasification processes in terms of energy consumption is shown. The collected results can be useful in further analysis of the gasification processes, such as energy and exergy analysis and kinetics.",
publisher = "SDEWES - International Centre for Sustainable Development of Energy, Water and Environment Systems, Zagreb : Faculty of Mechanical Engineering and Naval Architecture",
journal = "18th Conference on Sustainable Development of Energy, Water and Environment Systems : Proceedings",
title = "Gasification of Sewage Sludge: Thermodynamic Equilibrium Modeling",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12613"
}
Cvetinović, D., Milutinović, N., Erić, A., Manić, N., Bakić, V.,& Janković, B.. (2023). Gasification of Sewage Sludge: Thermodynamic Equilibrium Modeling. in 18th Conference on Sustainable Development of Energy, Water and Environment Systems : Proceedings
SDEWES - International Centre for Sustainable Development of Energy, Water and Environment Systems..
https://hdl.handle.net/21.15107/rcub_vinar_12613
Cvetinović D, Milutinović N, Erić A, Manić N, Bakić V, Janković B. Gasification of Sewage Sludge: Thermodynamic Equilibrium Modeling. in 18th Conference on Sustainable Development of Energy, Water and Environment Systems : Proceedings. 2023;.
https://hdl.handle.net/21.15107/rcub_vinar_12613 .
Cvetinović, Dejan, Milutinović, Nada, Erić, Aleksandar, Manić, Nebojša, Bakić, Vukman, Janković, Bojan, "Gasification of Sewage Sludge: Thermodynamic Equilibrium Modeling" in 18th Conference on Sustainable Development of Energy, Water and Environment Systems : Proceedings (2023),
https://hdl.handle.net/21.15107/rcub_vinar_12613 .

The kinetic study of fruit processing waste pyrolysis for efficient production of platform chemicals

Manić, Nebojša; Janković, Bojan; Veljković, Filip; Pijović, Milena

(SDEWES - International Centre for Sustainable Development of Energy, Water and Environment Systems, 2023)

TY  - CONF
AU  - Manić, Nebojša
AU  - Janković, Bojan
AU  - Veljković, Filip
AU  - Pijović, Milena
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12614
AB  - This paper considers possible uses of fruit-based waste for the production of valuable chemicals and biofuel precursors through recycling by thermochemical conversion. Slow pyrolysis of goji berry mesocarp as sugar-riched feedstock was investigated using simultaneous thermal analysis measurements in non-isothermal conditions. This work announced that pyrolysis of goji berry mesocarp represents a promising route to obtaining an important key platform chemical - 5-hydroxymethylfurfural (5-HMF). To establish the process mechanism, two kinetic approaches were used for kinetic parameters determination: first, Friedman’s and Vyazovkin’s model-free (inverse) methods supported by numerical optimization of the process, and second, the model-based (direct) method. Model-free results showed a complex evolution of activation energy with conversion, indicating a multi-step mechanism. It was found that autocatalytic dehydration of fructose (in the presence of Lewis acids) is responsible for the production of 5-HMF at a low heating rate (5.0 K/min) with a maximum 5-HMF theoretical yield of 63.20 %. Higher heating rates (10.0 K/min and 15.0 K/min) trigger the fructose autogenesis behavior which opens the transferability channel to glucose (substrate) engagement for 5-HMF theoretical high yield production. It was revealed that differences between kinetic parameters are a consequence of the change in the mechanism of glycosidic bond cleavage. The validity of the proposed reaction mechanism scheme and accuracy of kinetic parameters was confirmed by modulated dynamic predictions.
PB  - SDEWES - International Centre for Sustainable Development of Energy, Water and Environment Systems
PB  - Zagreb : Faculty of Mechanical Engineering and Naval Architecture
C3  - 18th Conference on Sustainable Development of Energy, Water and Environment Systems : Proceedings
T1  - The kinetic study of fruit processing waste pyrolysis for efficient production of platform chemicals
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12614
ER  - 
@conference{
author = "Manić, Nebojša and Janković, Bojan and Veljković, Filip and Pijović, Milena",
year = "2023",
abstract = "This paper considers possible uses of fruit-based waste for the production of valuable chemicals and biofuel precursors through recycling by thermochemical conversion. Slow pyrolysis of goji berry mesocarp as sugar-riched feedstock was investigated using simultaneous thermal analysis measurements in non-isothermal conditions. This work announced that pyrolysis of goji berry mesocarp represents a promising route to obtaining an important key platform chemical - 5-hydroxymethylfurfural (5-HMF). To establish the process mechanism, two kinetic approaches were used for kinetic parameters determination: first, Friedman’s and Vyazovkin’s model-free (inverse) methods supported by numerical optimization of the process, and second, the model-based (direct) method. Model-free results showed a complex evolution of activation energy with conversion, indicating a multi-step mechanism. It was found that autocatalytic dehydration of fructose (in the presence of Lewis acids) is responsible for the production of 5-HMF at a low heating rate (5.0 K/min) with a maximum 5-HMF theoretical yield of 63.20 %. Higher heating rates (10.0 K/min and 15.0 K/min) trigger the fructose autogenesis behavior which opens the transferability channel to glucose (substrate) engagement for 5-HMF theoretical high yield production. It was revealed that differences between kinetic parameters are a consequence of the change in the mechanism of glycosidic bond cleavage. The validity of the proposed reaction mechanism scheme and accuracy of kinetic parameters was confirmed by modulated dynamic predictions.",
publisher = "SDEWES - International Centre for Sustainable Development of Energy, Water and Environment Systems, Zagreb : Faculty of Mechanical Engineering and Naval Architecture",
journal = "18th Conference on Sustainable Development of Energy, Water and Environment Systems : Proceedings",
title = "The kinetic study of fruit processing waste pyrolysis for efficient production of platform chemicals",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12614"
}
Manić, N., Janković, B., Veljković, F.,& Pijović, M.. (2023). The kinetic study of fruit processing waste pyrolysis for efficient production of platform chemicals. in 18th Conference on Sustainable Development of Energy, Water and Environment Systems : Proceedings
SDEWES - International Centre for Sustainable Development of Energy, Water and Environment Systems..
https://hdl.handle.net/21.15107/rcub_vinar_12614
Manić N, Janković B, Veljković F, Pijović M. The kinetic study of fruit processing waste pyrolysis for efficient production of platform chemicals. in 18th Conference on Sustainable Development of Energy, Water and Environment Systems : Proceedings. 2023;.
https://hdl.handle.net/21.15107/rcub_vinar_12614 .
Manić, Nebojša, Janković, Bojan, Veljković, Filip, Pijović, Milena, "The kinetic study of fruit processing waste pyrolysis for efficient production of platform chemicals" in 18th Conference on Sustainable Development of Energy, Water and Environment Systems : Proceedings (2023),
https://hdl.handle.net/21.15107/rcub_vinar_12614 .

Nitrogen distribution analysis during the devolatilization process of various feedstocks using TG-DTG-MS analysis

Stojiljković, Dragoslava; Radojević, Miloš; Bešenić, Tibor; Vujanović, Milan; Wang, Xuebin; Janković, Bojan

(Budapest : Akadémiai Kiadó, 2023)

TY  - CONF
AU  - Stojiljković, Dragoslava
AU  - Radojević, Miloš
AU  - Bešenić, Tibor
AU  - Vujanović, Milan
AU  - Wang, Xuebin
AU  - Janković, Bojan
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12619
AB  - The fuel-NOx emissions during the conversion of carbon-based feedstock into energy and chemicals are on a global level in focus last decades due to environmental issues. The emission of nitrogen oxides is recognized among the other pollutants, as one of the key environmental problems related to energy production by various types of feedstocks. In this paper, the effect of fuel-based nitrogen delivery on the development of NOx precursors (HCN and NH3) during the devolatilization process of properly selected samples (coal, sawdust, wheat straw, and ground coffee waste) has been examined. TG-DTG thermal analysis techniques, coupled with mass spectrometry (MS) were used for the assessment of nitrogen distribution for HCN and NH3 gases, as intermediate species during feedstocks devolatilization, which directly influences the NOx emission during thermochemical conversion processes (pyrolysis and combustion). The mass balance of nitrogen together with performed EGA (evolved gas analysis), and the distribution of nitrogen between volatiles and formed char were also determined. The obtained data for investigated samples could be exploited for further thermochemical process optimization, in regard to NOx emissions. The presented results could be used as the experimentally determined input parameters for the mathematical modeling of indicated processes, and with further analysis can be transferred to large-scale industrial plant applications.
PB  - Budapest : Akadémiai Kiadó
C3  - JTACC 2023 : 3rd Journal of Thermal Analysis and Calorimetry Conference and 9th V4 (Joint Czech-Hungarian-Polish-Slovakian) Thermoanalytical Conference : Book of asbtracts
T1  - Nitrogen distribution analysis during the devolatilization process of various feedstocks using TG-DTG-MS analysis
SP  - 372
EP  - 372
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12619
ER  - 
@conference{
author = "Stojiljković, Dragoslava and Radojević, Miloš and Bešenić, Tibor and Vujanović, Milan and Wang, Xuebin and Janković, Bojan",
year = "2023",
abstract = "The fuel-NOx emissions during the conversion of carbon-based feedstock into energy and chemicals are on a global level in focus last decades due to environmental issues. The emission of nitrogen oxides is recognized among the other pollutants, as one of the key environmental problems related to energy production by various types of feedstocks. In this paper, the effect of fuel-based nitrogen delivery on the development of NOx precursors (HCN and NH3) during the devolatilization process of properly selected samples (coal, sawdust, wheat straw, and ground coffee waste) has been examined. TG-DTG thermal analysis techniques, coupled with mass spectrometry (MS) were used for the assessment of nitrogen distribution for HCN and NH3 gases, as intermediate species during feedstocks devolatilization, which directly influences the NOx emission during thermochemical conversion processes (pyrolysis and combustion). The mass balance of nitrogen together with performed EGA (evolved gas analysis), and the distribution of nitrogen between volatiles and formed char were also determined. The obtained data for investigated samples could be exploited for further thermochemical process optimization, in regard to NOx emissions. The presented results could be used as the experimentally determined input parameters for the mathematical modeling of indicated processes, and with further analysis can be transferred to large-scale industrial plant applications.",
publisher = "Budapest : Akadémiai Kiadó",
journal = "JTACC 2023 : 3rd Journal of Thermal Analysis and Calorimetry Conference and 9th V4 (Joint Czech-Hungarian-Polish-Slovakian) Thermoanalytical Conference : Book of asbtracts",
title = "Nitrogen distribution analysis during the devolatilization process of various feedstocks using TG-DTG-MS analysis",
pages = "372-372",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12619"
}
Stojiljković, D., Radojević, M., Bešenić, T., Vujanović, M., Wang, X.,& Janković, B.. (2023). Nitrogen distribution analysis during the devolatilization process of various feedstocks using TG-DTG-MS analysis. in JTACC 2023 : 3rd Journal of Thermal Analysis and Calorimetry Conference and 9th V4 (Joint Czech-Hungarian-Polish-Slovakian) Thermoanalytical Conference : Book of asbtracts
Budapest : Akadémiai Kiadó., 372-372.
https://hdl.handle.net/21.15107/rcub_vinar_12619
Stojiljković D, Radojević M, Bešenić T, Vujanović M, Wang X, Janković B. Nitrogen distribution analysis during the devolatilization process of various feedstocks using TG-DTG-MS analysis. in JTACC 2023 : 3rd Journal of Thermal Analysis and Calorimetry Conference and 9th V4 (Joint Czech-Hungarian-Polish-Slovakian) Thermoanalytical Conference : Book of asbtracts. 2023;:372-372.
https://hdl.handle.net/21.15107/rcub_vinar_12619 .
Stojiljković, Dragoslava, Radojević, Miloš, Bešenić, Tibor, Vujanović, Milan, Wang, Xuebin, Janković, Bojan, "Nitrogen distribution analysis during the devolatilization process of various feedstocks using TG-DTG-MS analysis" in JTACC 2023 : 3rd Journal of Thermal Analysis and Calorimetry Conference and 9th V4 (Joint Czech-Hungarian-Polish-Slovakian) Thermoanalytical Conference : Book of asbtracts (2023):372-372,
https://hdl.handle.net/21.15107/rcub_vinar_12619 .

Preparation and characterization of activated carbon obtained from bio-waste using bases as activators

Dodevski, Vladimir; Krstić, Sanja; Waisi, Hadi; Rosić, Milena; Čebela, Maria; Popović, Jasmina; Janković, Bojan

(Herceg Novi : Faculty of Management, 2023)

TY  - CONF
AU  - Dodevski, Vladimir
AU  - Krstić, Sanja
AU  - Waisi, Hadi
AU  - Rosić, Milena
AU  - Čebela, Maria
AU  - Popović, Jasmina
AU  - Janković, Bojan
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12620
AB  - Activated carbon is a highly porous and adsorptive material that is widely used for various applications such as wastewater treatment, air purification, and energy storage. Activated carbon can be produced from various raw materials, including biomass, which is a sustainable and renewable resource. The process of producing activated carbon from biomass involves two main steps: carbonization and activation. In the carbonization step, the biomass is heated in the absence of oxygen to convert it into carbon. The resulting carbonaceous material is then activated using a chemical or physical process to create a highly porous structure with a large surface area. One way to activate the carbonized biomass is to use bases as activators. Bases such as potassium hydroxide (KOH) and sodium hydroxide (NaOH) have been used as activators due to their ability to promote the development of micropores and mesopores in the carbon structure. Activated carbon was characterized by various techniques such as scanning electron microscopy (SEM), Brunauer–Emmett–Teller (BET) analysis, Fourier transform infrared (FTIR) spectroscopy and X-ray diffraction (XRD) analysis. These techniques provide information on the surface area, pore size distribution, functional groups, and crystal structure of activated carbon.
PB  - Herceg Novi : Faculty of Management
C3  - COAST 2023 : II International Conference on Advances in Science and Technology : Book of abstracts
T1  - Preparation and characterization of activated carbon obtained from bio-waste using bases as activators
SP  - 59
EP  - 59
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12620
ER  - 
@conference{
author = "Dodevski, Vladimir and Krstić, Sanja and Waisi, Hadi and Rosić, Milena and Čebela, Maria and Popović, Jasmina and Janković, Bojan",
year = "2023",
abstract = "Activated carbon is a highly porous and adsorptive material that is widely used for various applications such as wastewater treatment, air purification, and energy storage. Activated carbon can be produced from various raw materials, including biomass, which is a sustainable and renewable resource. The process of producing activated carbon from biomass involves two main steps: carbonization and activation. In the carbonization step, the biomass is heated in the absence of oxygen to convert it into carbon. The resulting carbonaceous material is then activated using a chemical or physical process to create a highly porous structure with a large surface area. One way to activate the carbonized biomass is to use bases as activators. Bases such as potassium hydroxide (KOH) and sodium hydroxide (NaOH) have been used as activators due to their ability to promote the development of micropores and mesopores in the carbon structure. Activated carbon was characterized by various techniques such as scanning electron microscopy (SEM), Brunauer–Emmett–Teller (BET) analysis, Fourier transform infrared (FTIR) spectroscopy and X-ray diffraction (XRD) analysis. These techniques provide information on the surface area, pore size distribution, functional groups, and crystal structure of activated carbon.",
publisher = "Herceg Novi : Faculty of Management",
journal = "COAST 2023 : II International Conference on Advances in Science and Technology : Book of abstracts",
title = "Preparation and characterization of activated carbon obtained from bio-waste using bases as activators",
pages = "59-59",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12620"
}
Dodevski, V., Krstić, S., Waisi, H., Rosić, M., Čebela, M., Popović, J.,& Janković, B.. (2023). Preparation and characterization of activated carbon obtained from bio-waste using bases as activators. in COAST 2023 : II International Conference on Advances in Science and Technology : Book of abstracts
Herceg Novi : Faculty of Management., 59-59.
https://hdl.handle.net/21.15107/rcub_vinar_12620
Dodevski V, Krstić S, Waisi H, Rosić M, Čebela M, Popović J, Janković B. Preparation and characterization of activated carbon obtained from bio-waste using bases as activators. in COAST 2023 : II International Conference on Advances in Science and Technology : Book of abstracts. 2023;:59-59.
https://hdl.handle.net/21.15107/rcub_vinar_12620 .
Dodevski, Vladimir, Krstić, Sanja, Waisi, Hadi, Rosić, Milena, Čebela, Maria, Popović, Jasmina, Janković, Bojan, "Preparation and characterization of activated carbon obtained from bio-waste using bases as activators" in COAST 2023 : II International Conference on Advances in Science and Technology : Book of abstracts (2023):59-59,
https://hdl.handle.net/21.15107/rcub_vinar_12620 .

Prečišćavanje bunarskih voda upotrebom filtera na bazi aktivnog uglja od opušaka cigarete

Waisi, Hadi; Marčeta Kaninski, Milica; Rajčić, Boris; Marinković, Miloš; Dodevski, Vladimir; Janković, Bojan; Popović, Dejan

(2023)


                                            

                                            
Waisi, H., Marčeta Kaninski, M., Rajčić, B., Marinković, M., Dodevski, V., Janković, B.,& Popović, D.. (2023). Prečišćavanje bunarskih voda upotrebom filtera na bazi aktivnog uglja od opušaka cigarete. in Univerzitet u Beogradu.
https://hdl.handle.net/21.15107/rcub_vinar_13256
Waisi H, Marčeta Kaninski M, Rajčić B, Marinković M, Dodevski V, Janković B, Popović D. Prečišćavanje bunarskih voda upotrebom filtera na bazi aktivnog uglja od opušaka cigarete. in Univerzitet u Beogradu. 2023;.
https://hdl.handle.net/21.15107/rcub_vinar_13256 .
Waisi, Hadi, Marčeta Kaninski, Milica, Rajčić, Boris, Marinković, Miloš, Dodevski, Vladimir, Janković, Bojan, Popović, Dejan, "Prečišćavanje bunarskih voda upotrebom filtera na bazi aktivnog uglja od opušaka cigarete" in Univerzitet u Beogradu (2023),
https://hdl.handle.net/21.15107/rcub_vinar_13256 .

Influence of 24-Epibrassinolide on the Energetic Parameters and Early Stages of Growth and Development in Seedlings of Two Maize (Zea mays L.) Genotypes

Božilović, Bojana; Nikolić, Bogdan; Waisi, Hadi; Trifković, Jelena; Dodevski, Vladimir; Janković, Bojan; Krstić, Sanja; Mojović, Miloš

(2023)

TY  - JOUR
AU  - Božilović, Bojana
AU  - Nikolić, Bogdan
AU  - Waisi, Hadi
AU  - Trifković, Jelena
AU  - Dodevski, Vladimir
AU  - Janković, Bojan
AU  - Krstić, Sanja
AU  - Mojović, Miloš
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11876
AB  - Brassinosteroids (BRs) are a class of plant hormones that play important roles in regulating various physiological and developmental processes in plants. One of the most effective BRs involved in modulating crop growth is 24-epibrassinolide (24-EBL). The effects of different concentrations of 24-EBL on various biochemical and biophysical parameters critical to early growth stages and seedling development were investigated using two maize hybrids, ‘ZP 434’ (a new-generation hybrid) and ‘ZP 704’ (an older-generation hybrid). The evaluation of results is based on measurements of germination percentage, morphometric parameters, redox status, comparative analysis of thermodynamic parameters (such as Gibbs free energy, enthalpy, entropy), and the concentration of specific sugars in different parts of maize seedlings. The results indicate that the germination and initial growth of maize seedlings are influenced by the flow of crucial sugars from the remaining seed (as a source of nutrients) towards the plumule and radicle (as sink organs). Furthermore, alterations in Gibbs free energy play a significant role in these sugar transfers within the maize seedlings. The seed germination was most affected by the highest concentrations of 24-EBL, showing inhibitory effects, whereas lower and moderate concentrations of exogenously added 24-EBL exhibited a beneficial influence on the initial phases of seedling growth. The mentioned approach gives new insights into source–sink relationships and can be used as a quantitative measure of the germination energy, which until now has been a qualitative criterion in seed science.
T2  - Agronomy
T1  - Influence of 24-Epibrassinolide on the Energetic Parameters and Early Stages of Growth and Development in Seedlings of Two Maize (Zea mays L.) Genotypes
VL  - 13
IS  - 7
SP  - 1673
DO  - 10.3390/agronomy13071673
ER  - 
@article{
author = "Božilović, Bojana and Nikolić, Bogdan and Waisi, Hadi and Trifković, Jelena and Dodevski, Vladimir and Janković, Bojan and Krstić, Sanja and Mojović, Miloš",
year = "2023",
abstract = "Brassinosteroids (BRs) are a class of plant hormones that play important roles in regulating various physiological and developmental processes in plants. One of the most effective BRs involved in modulating crop growth is 24-epibrassinolide (24-EBL). The effects of different concentrations of 24-EBL on various biochemical and biophysical parameters critical to early growth stages and seedling development were investigated using two maize hybrids, ‘ZP 434’ (a new-generation hybrid) and ‘ZP 704’ (an older-generation hybrid). The evaluation of results is based on measurements of germination percentage, morphometric parameters, redox status, comparative analysis of thermodynamic parameters (such as Gibbs free energy, enthalpy, entropy), and the concentration of specific sugars in different parts of maize seedlings. The results indicate that the germination and initial growth of maize seedlings are influenced by the flow of crucial sugars from the remaining seed (as a source of nutrients) towards the plumule and radicle (as sink organs). Furthermore, alterations in Gibbs free energy play a significant role in these sugar transfers within the maize seedlings. The seed germination was most affected by the highest concentrations of 24-EBL, showing inhibitory effects, whereas lower and moderate concentrations of exogenously added 24-EBL exhibited a beneficial influence on the initial phases of seedling growth. The mentioned approach gives new insights into source–sink relationships and can be used as a quantitative measure of the germination energy, which until now has been a qualitative criterion in seed science.",
journal = "Agronomy",
title = "Influence of 24-Epibrassinolide on the Energetic Parameters and Early Stages of Growth and Development in Seedlings of Two Maize (Zea mays L.) Genotypes",
volume = "13",
number = "7",
pages = "1673",
doi = "10.3390/agronomy13071673"
}
Božilović, B., Nikolić, B., Waisi, H., Trifković, J., Dodevski, V., Janković, B., Krstić, S.,& Mojović, M.. (2023). Influence of 24-Epibrassinolide on the Energetic Parameters and Early Stages of Growth and Development in Seedlings of Two Maize (Zea mays L.) Genotypes. in Agronomy, 13(7), 1673.
https://doi.org/10.3390/agronomy13071673
Božilović B, Nikolić B, Waisi H, Trifković J, Dodevski V, Janković B, Krstić S, Mojović M. Influence of 24-Epibrassinolide on the Energetic Parameters and Early Stages of Growth and Development in Seedlings of Two Maize (Zea mays L.) Genotypes. in Agronomy. 2023;13(7):1673.
doi:10.3390/agronomy13071673 .
Božilović, Bojana, Nikolić, Bogdan, Waisi, Hadi, Trifković, Jelena, Dodevski, Vladimir, Janković, Bojan, Krstić, Sanja, Mojović, Miloš, "Influence of 24-Epibrassinolide on the Energetic Parameters and Early Stages of Growth and Development in Seedlings of Two Maize (Zea mays L.) Genotypes" in Agronomy, 13, no. 7 (2023):1673,
https://doi.org/10.3390/agronomy13071673 . .

Sewage sludge from wastewater treatment plants for energy purposes: thermodynamic approach

Erić, Aleksandar; Cvetinović, Dejan; Cvetković, Slobodan; Perendija, Jovana; Pijović-Radovanović, Milena; Janković, Bojan

(Belgrade : Society of Thermal Engineers of Serbia, 2023)

TY  - CONF
AU  - Erić, Aleksandar
AU  - Cvetinović, Dejan
AU  - Cvetković, Slobodan
AU  - Perendija, Jovana
AU  - Pijović-Radovanović, Milena
AU  - Janković, Bojan
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12353
AB  - The aim of the article is to show the effects of the main air plasma gasifier operating
parameters, such as temperature and equivalence ratio on the gasification performance of sewage
sludge from wastewater treatment plants. The parametric study was performed using a onedimensional mathematical model to determine the equilibrium composition of the system. The model
is based on the principle of the minimum of the Gibbs function and uses only the ultimate and
proximate analysis data as input to the model. The output of the model gives the equilibrium
composition of the gasses produced. The parametric analysis was performed in order to determine the
optimal operating parameters of the plasma reactor in order to obtain syngas with the highest heat
value while achieving the maximum efficiency of the process. The collected results can be useful in
further analysis of the gasification processes in plasma reactor, such as exergy analysis and kinetics
PB  - Belgrade : Society of Thermal Engineers of Serbia
C3  - International Conference Power Plants 2023 : Proceedings
T1  - Sewage sludge from wastewater treatment plants for energy purposes: thermodynamic approach
SP  - 933
EP  - 948
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12353
ER  - 
@conference{
author = "Erić, Aleksandar and Cvetinović, Dejan and Cvetković, Slobodan and Perendija, Jovana and Pijović-Radovanović, Milena and Janković, Bojan",
year = "2023",
abstract = "The aim of the article is to show the effects of the main air plasma gasifier operating
parameters, such as temperature and equivalence ratio on the gasification performance of sewage
sludge from wastewater treatment plants. The parametric study was performed using a onedimensional mathematical model to determine the equilibrium composition of the system. The model
is based on the principle of the minimum of the Gibbs function and uses only the ultimate and
proximate analysis data as input to the model. The output of the model gives the equilibrium
composition of the gasses produced. The parametric analysis was performed in order to determine the
optimal operating parameters of the plasma reactor in order to obtain syngas with the highest heat
value while achieving the maximum efficiency of the process. The collected results can be useful in
further analysis of the gasification processes in plasma reactor, such as exergy analysis and kinetics",
publisher = "Belgrade : Society of Thermal Engineers of Serbia",
journal = "International Conference Power Plants 2023 : Proceedings",
title = "Sewage sludge from wastewater treatment plants for energy purposes: thermodynamic approach",
pages = "933-948",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12353"
}
Erić, A., Cvetinović, D., Cvetković, S., Perendija, J., Pijović-Radovanović, M.,& Janković, B.. (2023). Sewage sludge from wastewater treatment plants for energy purposes: thermodynamic approach. in International Conference Power Plants 2023 : Proceedings
Belgrade : Society of Thermal Engineers of Serbia., 933-948.
https://hdl.handle.net/21.15107/rcub_vinar_12353
Erić A, Cvetinović D, Cvetković S, Perendija J, Pijović-Radovanović M, Janković B. Sewage sludge from wastewater treatment plants for energy purposes: thermodynamic approach. in International Conference Power Plants 2023 : Proceedings. 2023;:933-948.
https://hdl.handle.net/21.15107/rcub_vinar_12353 .
Erić, Aleksandar, Cvetinović, Dejan, Cvetković, Slobodan, Perendija, Jovana, Pijović-Radovanović, Milena, Janković, Bojan, "Sewage sludge from wastewater treatment plants for energy purposes: thermodynamic approach" in International Conference Power Plants 2023 : Proceedings (2023):933-948,
https://hdl.handle.net/21.15107/rcub_vinar_12353 .