Janković, Bojan Ž.

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Authority KeyName Variants
orcid::0000-0001-7520-1972
  • Janković, Bojan Ž. (71)
  • Janković, Bojan (39)
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 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. 451-03-68/2020-14/200026 (University of Belgrade, Institute of Chemistry, Technology and Metallurgy - IChTM)
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
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
STABILISE - Sustainable deployment of biomass catalytic gasification technology to increase the utilization of renewable energy in the Serbian industry 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

Performance Assessment of Wood Ash and Bone Char for Manganese Treatment in Acid Mine Drainage

Smičiklas, Ivana D.; Janković, Bojan; Jović, Mihajlo; Maletaškić, Jelena; Manić, Nebojša; Dragović, Snežana

(2023)

TY  - JOUR
AU  - Smičiklas, Ivana D.
AU  - Janković, Bojan
AU  - Jović, Mihajlo
AU  - Maletaškić, Jelena
AU  - Manić, Nebojša
AU  - Dragović, Snežana
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11623
AB  - Developing efficient methods for Mn separation is the most challenging in exploring innovative and sustainable acid mine drainage (AMD) treatments. The availability and capacity of certain waste materials for Mn removal warrant further exploration of their performance regarding the effect of process factors. This study addressed the influence of AMD chemistry (initial pH and concentrations of Mn, sulfate, and Fe), the solid/solution ratio, and the contact time on Mn separation by wood ash (WA) and bone char (BC). At an equivalent dose, WA displayed higher neutralization and Mn removal capacity over the initial pH range of 2.5–6.0 due to lime, dicalcium silicate, and fairchildite dissolution. On the other hand, at optimal doses, Mn separation by BC was faster, it was less affected by coexisting sulfate and Fe(II) species, and the carbonated hydroxyapatite structure of BC remained preserved. Efficient removal of Mn was feasible only at final pH values ≥ 9.0 in all systems with WA and at pH 6.0–6.4 using BC. These conclusions were confirmed by treating actual AMD with variable doses of both materials. The water-leaching potential of toxic elements from the AMD/BC treatment residue complied with the limits for inert waste. In contrast, the residue of AMD/WA treatment leached non-toxic quantities of Cr and substantial amounts of Al due to high residual alkalinity. To minimize the amount of secondary waste generated by BC application, its use emerges particularly beneficial after AMD neutralization in the finishing step intended for Mn removal.
T2  - Metals
T1  - Performance Assessment of Wood Ash and Bone Char for Manganese Treatment in Acid Mine Drainage
VL  - 13
IS  - 10
SP  - 1665
DO  - 10.3390/met13101665
ER  - 
@article{
author = "Smičiklas, Ivana D. and Janković, Bojan and Jović, Mihajlo and Maletaškić, Jelena and Manić, Nebojša and Dragović, Snežana",
year = "2023",
abstract = "Developing efficient methods for Mn separation is the most challenging in exploring innovative and sustainable acid mine drainage (AMD) treatments. The availability and capacity of certain waste materials for Mn removal warrant further exploration of their performance regarding the effect of process factors. This study addressed the influence of AMD chemistry (initial pH and concentrations of Mn, sulfate, and Fe), the solid/solution ratio, and the contact time on Mn separation by wood ash (WA) and bone char (BC). At an equivalent dose, WA displayed higher neutralization and Mn removal capacity over the initial pH range of 2.5–6.0 due to lime, dicalcium silicate, and fairchildite dissolution. On the other hand, at optimal doses, Mn separation by BC was faster, it was less affected by coexisting sulfate and Fe(II) species, and the carbonated hydroxyapatite structure of BC remained preserved. Efficient removal of Mn was feasible only at final pH values ≥ 9.0 in all systems with WA and at pH 6.0–6.4 using BC. These conclusions were confirmed by treating actual AMD with variable doses of both materials. The water-leaching potential of toxic elements from the AMD/BC treatment residue complied with the limits for inert waste. In contrast, the residue of AMD/WA treatment leached non-toxic quantities of Cr and substantial amounts of Al due to high residual alkalinity. To minimize the amount of secondary waste generated by BC application, its use emerges particularly beneficial after AMD neutralization in the finishing step intended for Mn removal.",
journal = "Metals",
title = "Performance Assessment of Wood Ash and Bone Char for Manganese Treatment in Acid Mine Drainage",
volume = "13",
number = "10",
pages = "1665",
doi = "10.3390/met13101665"
}
Smičiklas, I. D., Janković, B., Jović, M., Maletaškić, J., Manić, N.,& Dragović, S.. (2023). Performance Assessment of Wood Ash and Bone Char for Manganese Treatment in Acid Mine Drainage. in Metals, 13(10), 1665.
https://doi.org/10.3390/met13101665
Smičiklas ID, Janković B, Jović M, Maletaškić J, Manić N, Dragović S. Performance Assessment of Wood Ash and Bone Char for Manganese Treatment in Acid Mine Drainage. in Metals. 2023;13(10):1665.
doi:10.3390/met13101665 .
Smičiklas, Ivana D., Janković, Bojan, Jović, Mihajlo, Maletaškić, Jelena, Manić, Nebojša, Dragović, Snežana, "Performance Assessment of Wood Ash and Bone Char for Manganese Treatment in Acid Mine Drainage" in Metals, 13, no. 10 (2023):1665,
https://doi.org/10.3390/met13101665 . .
1
1

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 .

Upcycling of the Used Cigarette Butt Filters through Pyrolysis Process: Detailed Kinetic Mechanism with Bio-Char Characterization

Janković, Bojan Ž.; Kojić, Marija; Milošević, Milena; Rosić, Milena; Waisi, Hadi; Božilović, Bojana; Manić, Nebojša; Dodevski, Vladimir

(2023)

TY  - JOUR
AU  - Janković, Bojan Ž.
AU  - Kojić, Marija
AU  - Milošević, Milena
AU  - Rosić, Milena
AU  - Waisi, Hadi
AU  - Božilović, Bojana
AU  - Manić, Nebojša
AU  - Dodevski, Vladimir
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11391
AB  - Thermo-chemical conversion via the pyrolysis of cigarette butt (CB) filters was successfully valorized and upcycled in the pre-carbonization and carbonization stages. The pre-carbonization stage (devolatilization) of the precursor material (cellulose acetate filter, r-CAcF) was analyzed by micro-scale experiments under non-isothermal conditions using TG-DTG-DTA and DSC techniques. The results of a detailed kinetic study showed that the decomposition of r-CAcF takes place via complex mechanisms, including consecutive reaction steps and two single-step reactions. Consecutive stages include the α-transition referred to as a cellulose polymorphic transformation (cellulose I → II) through crystallization mechanism changes, where a more thermodynamically ordered system was obtained. It was found that the transformation rate of cellulose I → II (‘cellulose regeneration’) is strongly affected by the presence of alkali metals and the deacetylation process. Two single-step reactions showed significant overlapping behavior, which involves a nucleation-controlled scission mechanism (producing levoglucosan, gaseous products, and abundant radicals) and hydrolytic decomposition of cellulose by catalytic cleavage of glycosidic bonds with the presence of an acidic catalyst. A macro-scale experiment showed that the operating temperature and heating rate had the most notable effects on the total surface area of the manufactured carbon. A substantial degree of mesoporosity with a median pore radius of 3.1695 nm was identified. The presence of macroporosity on the carbon surface and acidic surface functional groups was observed.
T2  - Polymers
T1  - Upcycling of the Used Cigarette Butt Filters through Pyrolysis Process: Detailed Kinetic Mechanism with Bio-Char Characterization
VL  - 15
IS  - 14
SP  - 3054
DO  - 10.3390/polym15143054
ER  - 
@article{
author = "Janković, Bojan Ž. and Kojić, Marija and Milošević, Milena and Rosić, Milena and Waisi, Hadi and Božilović, Bojana and Manić, Nebojša and Dodevski, Vladimir",
year = "2023",
abstract = "Thermo-chemical conversion via the pyrolysis of cigarette butt (CB) filters was successfully valorized and upcycled in the pre-carbonization and carbonization stages. The pre-carbonization stage (devolatilization) of the precursor material (cellulose acetate filter, r-CAcF) was analyzed by micro-scale experiments under non-isothermal conditions using TG-DTG-DTA and DSC techniques. The results of a detailed kinetic study showed that the decomposition of r-CAcF takes place via complex mechanisms, including consecutive reaction steps and two single-step reactions. Consecutive stages include the α-transition referred to as a cellulose polymorphic transformation (cellulose I → II) through crystallization mechanism changes, where a more thermodynamically ordered system was obtained. It was found that the transformation rate of cellulose I → II (‘cellulose regeneration’) is strongly affected by the presence of alkali metals and the deacetylation process. Two single-step reactions showed significant overlapping behavior, which involves a nucleation-controlled scission mechanism (producing levoglucosan, gaseous products, and abundant radicals) and hydrolytic decomposition of cellulose by catalytic cleavage of glycosidic bonds with the presence of an acidic catalyst. A macro-scale experiment showed that the operating temperature and heating rate had the most notable effects on the total surface area of the manufactured carbon. A substantial degree of mesoporosity with a median pore radius of 3.1695 nm was identified. The presence of macroporosity on the carbon surface and acidic surface functional groups was observed.",
journal = "Polymers",
title = "Upcycling of the Used Cigarette Butt Filters through Pyrolysis Process: Detailed Kinetic Mechanism with Bio-Char Characterization",
volume = "15",
number = "14",
pages = "3054",
doi = "10.3390/polym15143054"
}
Janković, B. Ž., Kojić, M., Milošević, M., Rosić, M., Waisi, H., Božilović, B., Manić, N.,& Dodevski, V.. (2023). Upcycling of the Used Cigarette Butt Filters through Pyrolysis Process: Detailed Kinetic Mechanism with Bio-Char Characterization. in Polymers, 15(14), 3054.
https://doi.org/10.3390/polym15143054
Janković BŽ, Kojić M, Milošević M, Rosić M, Waisi H, Božilović B, Manić N, Dodevski V. Upcycling of the Used Cigarette Butt Filters through Pyrolysis Process: Detailed Kinetic Mechanism with Bio-Char Characterization. in Polymers. 2023;15(14):3054.
doi:10.3390/polym15143054 .
Janković, Bojan Ž., Kojić, Marija, Milošević, Milena, Rosić, Milena, Waisi, Hadi, Božilović, Bojana, Manić, Nebojša, Dodevski, Vladimir, "Upcycling of the Used Cigarette Butt Filters through Pyrolysis Process: Detailed Kinetic Mechanism with Bio-Char Characterization" in Polymers, 15, no. 14 (2023):3054,
https://doi.org/10.3390/polym15143054 . .
1
1

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 . .

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

(Beograd : Savez mašinskih i elektrotehničk ihinženjera i tehničara Srbije (SMEITS) : Društvo za obnovljive izvore električne energije, 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  - Beograd : Savez mašinskih i elektrotehničk ihinženjera i tehničara Srbije (SMEITS) : Društvo za obnovljive izvore električne energije
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 = "Beograd : Savez mašinskih i elektrotehničk ihinženjera i tehničara Srbije (SMEITS) : Društvo za obnovljive izvore električne energije",
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
Beograd : Savez mašinskih i elektrotehničk ihinženjera i tehničara Srbije (SMEITS) : Društvo za obnovljive izvore električne energije., 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 .

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 .

Novel insight in thermo-oxidative kinetics of vitamin D-based supplement formulation using TG–DTG–DTA, ATR-FTIR and MALDI-MS techniques

Jelić, Dijana; Đermanović, Mirjana; Marković, Anđela; Manić, Nebojša; Veličković, Suzana; Veljković, Filip M.; Janković, Bojan Ž.

(2023)

TY  - JOUR
AU  - Jelić, Dijana
AU  - Đermanović, Mirjana
AU  - Marković, Anđela
AU  - Manić, Nebojša
AU  - Veličković, Suzana
AU  - Veljković, Filip M.
AU  - Janković, Bojan Ž.
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10738
AB  - This work provides detailed mechanistic analysis of thermo-oxidative degradation behavior of vitamin D3—Ca (CaCO3 form) solid state supplement formulation. Analytical techniques such Attenuated Total Reflection Fourier-transform Infrared (ATR-FTIR) spectroscopy and Matrix-Assisted Laser Desorption/Ionization Mass Spectrometry (MALDI-MS) were used for analysis of homogeneity of active pharmaceutical ingredients (APIs) throughout excipients contained within solid dosage forms. Information gained from MALDI-MS experiments was used to improve and better understand interactions present, later clearly disclosed through kinetic modeling. It was found that process mechanism proceeds via two single-step unbranched reactions and two steps of consecutive reactions. Key features include vitamin D3 meltings and degradation via hydrogen abstraction followed by addition of oxygen forming 1-hydroxy-vitamin D3 and further through its dehydration to 1-keto-vitamin D3. Identified product 1-hydroxy-vitamin D3 is substantial for enhancing the immune response of human body in fight against respiratory viruses. Another two degradation products, namely pyrocalciferol and isopyrocalciferol, produced by thermal isomerization at higher temperatures, were also identified. These vitamin epimers have crucial role in functioning of immune cells. Degradation process of mineral structure occurs through water molecules removal, forming anhydrous polymorph of CaCO3, where formation of solid (CaO) and gaseous (CO2) products participates in kinetically stabilized additive-functionalized amorphous CaCO3 crystallization. Confirmation of correctness of proposed degradation mechanism was verified by modulated dynamic (MD) predictions. Information obtained is valuable and suitable for safety evaluations of given supplement, but also could be applied for solid state forms, which are generally sensitive to oxidative conditions. © 2023, Akadémiai Kiadó, Budapest, Hungary.
T2  - Journal of Thermal Analysis and Calorimetry
T1  - Novel insight in thermo-oxidative kinetics of vitamin D-based supplement formulation using TG–DTG–DTA, ATR-FTIR and MALDI-MS techniques
VL  - 148
SP  - 4281
EP  - 4305
DO  - 10.1007/s10973-023-12017-3
ER  - 
@article{
author = "Jelić, Dijana and Đermanović, Mirjana and Marković, Anđela and Manić, Nebojša and Veličković, Suzana and Veljković, Filip M. and Janković, Bojan Ž.",
year = "2023",
abstract = "This work provides detailed mechanistic analysis of thermo-oxidative degradation behavior of vitamin D3—Ca (CaCO3 form) solid state supplement formulation. Analytical techniques such Attenuated Total Reflection Fourier-transform Infrared (ATR-FTIR) spectroscopy and Matrix-Assisted Laser Desorption/Ionization Mass Spectrometry (MALDI-MS) were used for analysis of homogeneity of active pharmaceutical ingredients (APIs) throughout excipients contained within solid dosage forms. Information gained from MALDI-MS experiments was used to improve and better understand interactions present, later clearly disclosed through kinetic modeling. It was found that process mechanism proceeds via two single-step unbranched reactions and two steps of consecutive reactions. Key features include vitamin D3 meltings and degradation via hydrogen abstraction followed by addition of oxygen forming 1-hydroxy-vitamin D3 and further through its dehydration to 1-keto-vitamin D3. Identified product 1-hydroxy-vitamin D3 is substantial for enhancing the immune response of human body in fight against respiratory viruses. Another two degradation products, namely pyrocalciferol and isopyrocalciferol, produced by thermal isomerization at higher temperatures, were also identified. These vitamin epimers have crucial role in functioning of immune cells. Degradation process of mineral structure occurs through water molecules removal, forming anhydrous polymorph of CaCO3, where formation of solid (CaO) and gaseous (CO2) products participates in kinetically stabilized additive-functionalized amorphous CaCO3 crystallization. Confirmation of correctness of proposed degradation mechanism was verified by modulated dynamic (MD) predictions. Information obtained is valuable and suitable for safety evaluations of given supplement, but also could be applied for solid state forms, which are generally sensitive to oxidative conditions. © 2023, Akadémiai Kiadó, Budapest, Hungary.",
journal = "Journal of Thermal Analysis and Calorimetry",
title = "Novel insight in thermo-oxidative kinetics of vitamin D-based supplement formulation using TG–DTG–DTA, ATR-FTIR and MALDI-MS techniques",
volume = "148",
pages = "4281-4305",
doi = "10.1007/s10973-023-12017-3"
}
Jelić, D., Đermanović, M., Marković, A., Manić, N., Veličković, S., Veljković, F. M.,& Janković, B. Ž.. (2023). Novel insight in thermo-oxidative kinetics of vitamin D-based supplement formulation using TG–DTG–DTA, ATR-FTIR and MALDI-MS techniques. in Journal of Thermal Analysis and Calorimetry, 148, 4281-4305.
https://doi.org/10.1007/s10973-023-12017-3
Jelić D, Đermanović M, Marković A, Manić N, Veličković S, Veljković FM, Janković BŽ. Novel insight in thermo-oxidative kinetics of vitamin D-based supplement formulation using TG–DTG–DTA, ATR-FTIR and MALDI-MS techniques. in Journal of Thermal Analysis and Calorimetry. 2023;148:4281-4305.
doi:10.1007/s10973-023-12017-3 .
Jelić, Dijana, Đermanović, Mirjana, Marković, Anđela, Manić, Nebojša, Veličković, Suzana, Veljković, Filip M., Janković, Bojan Ž., "Novel insight in thermo-oxidative kinetics of vitamin D-based supplement formulation using TG–DTG–DTA, ATR-FTIR and MALDI-MS techniques" in Journal of Thermal Analysis and Calorimetry, 148 (2023):4281-4305,
https://doi.org/10.1007/s10973-023-12017-3 . .

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 .

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 .

Biomass for clean energy solution: biomass gasification

Mladenović, Milica R.; Cvetinović, Dejan; Erić, Aleksandar; Janković, Bojan; Janković, Marija; Pijović-Radovanović, Milena

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

TY  - CONF
AU  - Mladenović, Milica R.
AU  - Cvetinović, Dejan
AU  - Erić, Aleksandar
AU  - Janković, Bojan
AU  - Janković, Marija
AU  - Pijović-Radovanović, Milena
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12102
AB  - Biomass waste recovery is an environmentally friendly method of waste management and sustainable energy production that effectively reduces greenhouse gas emissions and mitigates climate change. As a result, biomass is emerging as a significant source of renewable energy, replacing fossil fuels to power a green and sustainable society and accelerate the development of a circular bio-economy. Thermochemical conversion processes are the most efficient form of biomass utilization for energy production. Gasification of biomass as one of these processes is given special attention in this paper. The concise fundamentals of this process are presented, the types of gasifiers are described and a brief overview of plasma gasification is given with the highlighted advantages and challenges in its application.
PB  - Belgrade : Society of Thermal Engineers of Serbia
C3  - International Conference Power Plants 2023 : Proceedings
T1  - Biomass for clean energy solution: biomass gasification
SP  - 922
EP  - 932
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12102
ER  - 
@conference{
author = "Mladenović, Milica R. and Cvetinović, Dejan and Erić, Aleksandar and Janković, Bojan and Janković, Marija and Pijović-Radovanović, Milena",
year = "2023",
abstract = "Biomass waste recovery is an environmentally friendly method of waste management and sustainable energy production that effectively reduces greenhouse gas emissions and mitigates climate change. As a result, biomass is emerging as a significant source of renewable energy, replacing fossil fuels to power a green and sustainable society and accelerate the development of a circular bio-economy. Thermochemical conversion processes are the most efficient form of biomass utilization for energy production. Gasification of biomass as one of these processes is given special attention in this paper. The concise fundamentals of this process are presented, the types of gasifiers are described and a brief overview of plasma gasification is given with the highlighted advantages and challenges in its application.",
publisher = "Belgrade : Society of Thermal Engineers of Serbia",
journal = "International Conference Power Plants 2023 : Proceedings",
title = "Biomass for clean energy solution: biomass gasification",
pages = "922-932",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12102"
}
Mladenović, M. R., Cvetinović, D., Erić, A., Janković, B., Janković, M.,& Pijović-Radovanović, M.. (2023). Biomass for clean energy solution: biomass gasification. in International Conference Power Plants 2023 : Proceedings
Belgrade : Society of Thermal Engineers of Serbia., 922-932.
https://hdl.handle.net/21.15107/rcub_vinar_12102
Mladenović MR, Cvetinović D, Erić A, Janković B, Janković M, Pijović-Radovanović M. Biomass for clean energy solution: biomass gasification. in International Conference Power Plants 2023 : Proceedings. 2023;:922-932.
https://hdl.handle.net/21.15107/rcub_vinar_12102 .
Mladenović, Milica R., Cvetinović, Dejan, Erić, Aleksandar, Janković, Bojan, Janković, Marija, Pijović-Radovanović, Milena, "Biomass for clean energy solution: biomass gasification" in International Conference Power Plants 2023 : Proceedings (2023):922-932,
https://hdl.handle.net/21.15107/rcub_vinar_12102 .

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 .

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 .

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 .

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 .

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 .

Analysis of commercial supplements using a nuclear and MALDI-MS techniques

Janković, Marija; Veljković, Filip; Sarap, Nataša; Veličković, Suzana; Stajčić, Ivana; Šljivić-Ivanović, Marija; Janković, Bojan

(Belgrade : ETRAN Society, 2023)

TY  - CONF
AU  - Janković, Marija
AU  - Veljković, Filip
AU  - Sarap, Nataša
AU  - Veličković, Suzana
AU  - Stajčić, Ivana
AU  - Šljivić-Ivanović, Marija
AU  - Janković, Bojan
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12354
AB  - This paper presents application of a nuclear technique for the analysis of radioactivity in supplements using gas proportional counter as well as application of analytical technique Matrix-Assisted Laser Desorption/Ionization Mass Spectrometry (MALDI-MS) in order to characterize the radioactivity contents and stability of the chemical structures  for commercial supplements. Gas proportional counter enables to determination of gross alpha and gross beta activity in the environmental samples, where they are present as ultra trace elements. Also, MALDI-MS method is used, since it represents an excellent analytical technique for detecting large number of biologically important molecules, such as commercial supplements.
PB  - Belgrade : ETRAN Society
PB  - Belgrade : Academic Mind
C3  - IcETRAN 2023 : 10th Jubilee International Conference IcETRAN : Proceedings
T1  - Analysis of commercial supplements using a nuclear and MALDI-MS techniques
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12354
ER  - 
@conference{
author = "Janković, Marija and Veljković, Filip and Sarap, Nataša and Veličković, Suzana and Stajčić, Ivana and Šljivić-Ivanović, Marija and Janković, Bojan",
year = "2023",
abstract = "This paper presents application of a nuclear technique for the analysis of radioactivity in supplements using gas proportional counter as well as application of analytical technique Matrix-Assisted Laser Desorption/Ionization Mass Spectrometry (MALDI-MS) in order to characterize the radioactivity contents and stability of the chemical structures  for commercial supplements. Gas proportional counter enables to determination of gross alpha and gross beta activity in the environmental samples, where they are present as ultra trace elements. Also, MALDI-MS method is used, since it represents an excellent analytical technique for detecting large number of biologically important molecules, such as commercial supplements.",
publisher = "Belgrade : ETRAN Society, Belgrade : Academic Mind",
journal = "IcETRAN 2023 : 10th Jubilee International Conference IcETRAN : Proceedings",
title = "Analysis of commercial supplements using a nuclear and MALDI-MS techniques",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12354"
}
Janković, M., Veljković, F., Sarap, N., Veličković, S., Stajčić, I., Šljivić-Ivanović, M.,& Janković, B.. (2023). Analysis of commercial supplements using a nuclear and MALDI-MS techniques. in IcETRAN 2023 : 10th Jubilee International Conference IcETRAN : Proceedings
Belgrade : ETRAN Society..
https://hdl.handle.net/21.15107/rcub_vinar_12354
Janković M, Veljković F, Sarap N, Veličković S, Stajčić I, Šljivić-Ivanović M, Janković B. Analysis of commercial supplements using a nuclear and MALDI-MS techniques. in IcETRAN 2023 : 10th Jubilee International Conference IcETRAN : Proceedings. 2023;.
https://hdl.handle.net/21.15107/rcub_vinar_12354 .
Janković, Marija, Veljković, Filip, Sarap, Nataša, Veličković, Suzana, Stajčić, Ivana, Šljivić-Ivanović, Marija, Janković, Bojan, "Analysis of commercial supplements using a nuclear and MALDI-MS techniques" in IcETRAN 2023 : 10th Jubilee International Conference IcETRAN : Proceedings (2023),
https://hdl.handle.net/21.15107/rcub_vinar_12354 .

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 .

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 .

Thermodynamic study on energy crops thermochemical conversion to increase the efficiency of energy production

Manić, Nebojša G.; Janković, Bojan Ž.; Stojiljković, Dragoslava; Popović, Mina; Cvetković, Slobodan; Mikulčić, Hrvoje

(2023)

TY  - JOUR
AU  - Manić, Nebojša G.
AU  - Janković, Bojan Ž.
AU  - Stojiljković, Dragoslava
AU  - Popović, Mina
AU  - Cvetković, Slobodan
AU  - Mikulčić, Hrvoje
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10595
AB  - The actual paper analyses the performance of different energy crop biomasses, Miscanthus x giganteus Greef et Deu (EC-1) and Arundo donax L. (EC-2) stems, during slow pyrolysis process monitored by simultaneous TG-DTG-MS techniques, through chemical exergy analysis. In addition to considering the physical and chemical characteristics of given feedstocks for their efficient thermo-chemical conversion into pyrolytic gas, in this study, a theoretical simulation for their implementation use in the gasification process was also performed. The performed thermodynamic study with detailed exergy analysis showed that the large contribution of exergy in syngas components such as CO and H2 originates primarily from cellulose pyrolysis of EC-1, while large exergy contribution in syngas component as CH4 originates from lignin pyrolysis of EC-2. It was founded that the exergy efficiency of syngas for EC-1 equals 19.04%, which is lower than the exergy efficiency of syngas for EC-2 (20.46%), as a result of higher ash content in EC-1. Also, it was reported that higher carbon (C) and hydrogen (H) contents present in the EC-2 sample generate higher gaseous energy and exergy values, i.e. the increment of exergy efficiency of syngas, by both approaches (pyrolysis and gasification exergy analysis), but results in a lower biomass chemical exergy (18.28 MJ kg−1). The methodology applied to the gasification process was shown a higher exergy efficiency for EC-2 (∼36 – 42%) than for EC-1 (∼33 – 39%), dependant on the equivalence ratio (ER).
T2  - Thermochimica Acta
T1  - Thermodynamic study on energy crops thermochemical conversion to increase the efficiency of energy production
VL  - 719
SP  - 179408
DO  - 10.1016/j.tca.2022.179408
ER  - 
@article{
author = "Manić, Nebojša G. and Janković, Bojan Ž. and Stojiljković, Dragoslava and Popović, Mina and Cvetković, Slobodan and Mikulčić, Hrvoje",
year = "2023",
abstract = "The actual paper analyses the performance of different energy crop biomasses, Miscanthus x giganteus Greef et Deu (EC-1) and Arundo donax L. (EC-2) stems, during slow pyrolysis process monitored by simultaneous TG-DTG-MS techniques, through chemical exergy analysis. In addition to considering the physical and chemical characteristics of given feedstocks for their efficient thermo-chemical conversion into pyrolytic gas, in this study, a theoretical simulation for their implementation use in the gasification process was also performed. The performed thermodynamic study with detailed exergy analysis showed that the large contribution of exergy in syngas components such as CO and H2 originates primarily from cellulose pyrolysis of EC-1, while large exergy contribution in syngas component as CH4 originates from lignin pyrolysis of EC-2. It was founded that the exergy efficiency of syngas for EC-1 equals 19.04%, which is lower than the exergy efficiency of syngas for EC-2 (20.46%), as a result of higher ash content in EC-1. Also, it was reported that higher carbon (C) and hydrogen (H) contents present in the EC-2 sample generate higher gaseous energy and exergy values, i.e. the increment of exergy efficiency of syngas, by both approaches (pyrolysis and gasification exergy analysis), but results in a lower biomass chemical exergy (18.28 MJ kg−1). The methodology applied to the gasification process was shown a higher exergy efficiency for EC-2 (∼36 – 42%) than for EC-1 (∼33 – 39%), dependant on the equivalence ratio (ER).",
journal = "Thermochimica Acta",
title = "Thermodynamic study on energy crops thermochemical conversion to increase the efficiency of energy production",
volume = "719",
pages = "179408",
doi = "10.1016/j.tca.2022.179408"
}
Manić, N. G., Janković, B. Ž., Stojiljković, D., Popović, M., Cvetković, S.,& Mikulčić, H.. (2023). Thermodynamic study on energy crops thermochemical conversion to increase the efficiency of energy production. in Thermochimica Acta, 719, 179408.
https://doi.org/10.1016/j.tca.2022.179408
Manić NG, Janković BŽ, Stojiljković D, Popović M, Cvetković S, Mikulčić H. Thermodynamic study on energy crops thermochemical conversion to increase the efficiency of energy production. in Thermochimica Acta. 2023;719:179408.
doi:10.1016/j.tca.2022.179408 .
Manić, Nebojša G., Janković, Bojan Ž., Stojiljković, Dragoslava, Popović, Mina, Cvetković, Slobodan, Mikulčić, Hrvoje, "Thermodynamic study on energy crops thermochemical conversion to increase the efficiency of energy production" in Thermochimica Acta, 719 (2023):179408,
https://doi.org/10.1016/j.tca.2022.179408 . .
4
4

Kinetic and thermodynamic compensation phenomena in C3 and C4 energy crops pyrolysis: Implications on reaction mechanisms and product distributions

Janković, Bojan Ž.; Manić, Nebojša G.; Popović, Mina; Cvetković, Slobodan; Dželetović, Željko; Stojiljković, Dragoslava

(2023)

TY  - JOUR
AU  - Janković, Bojan Ž.
AU  - Manić, Nebojša G.
AU  - Popović, Mina
AU  - Cvetković, Slobodan
AU  - Dželetović, Željko
AU  - Stojiljković, Dragoslava
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10611
AB  - This work provides insight into possibilities of maximum utilization of C3-C4 energy crops for thermo-chemical conversion (slow pyrolysis) into high value biochemicals, platform chemicals, drop-in fuels and combustible gases, using coupled kinetic and thermodynamic analyses. In order to examine the kinetics of decomposition of lignocellulosic components, model-free and model-based methods faded from thermal analysis data were used. Thermodynamic compensation was used for explicatory of entropy controlled process, where conformational changes and chemical exchange directly affect the type and distribution of obtained pyrolytic products. It was shown that external variable (i.e. the heating rate/temperature) does not change either an entire reaction mechanism (mechanistic nature of MG and AD pyrolyses) or transition state, but it changes activation enthalpy and activation entropy which lead to differences in terms of heat energy consumption, pyrolysis favorability and thus rates of generation of activated complex among feedstocks. To investigate the interplay of catalysts (present in feedstocks as minerals) and reactants, selective energy transfer (SET) model was applied. The model showed an activity of catalyst with different outputs towards two reactants, lignin part of the structure in MG and 1,8-cineole in AD. It was shown that AD is more convenient for thermal conversion than MG, regarding to lower transformation energy requirement, higher reactivity, as well as much faster accumulation of products. © 2023 Elsevier B.V.
T2  - Industrial Crops and Products
T1  - Kinetic and thermodynamic compensation phenomena in C3 and C4 energy crops pyrolysis: Implications on reaction mechanisms and product distributions
VL  - 194
DO  - 10.1016/j.indcrop.2023.116275
ER  - 
@article{
author = "Janković, Bojan Ž. and Manić, Nebojša G. and Popović, Mina and Cvetković, Slobodan and Dželetović, Željko and Stojiljković, Dragoslava",
year = "2023",
abstract = "This work provides insight into possibilities of maximum utilization of C3-C4 energy crops for thermo-chemical conversion (slow pyrolysis) into high value biochemicals, platform chemicals, drop-in fuels and combustible gases, using coupled kinetic and thermodynamic analyses. In order to examine the kinetics of decomposition of lignocellulosic components, model-free and model-based methods faded from thermal analysis data were used. Thermodynamic compensation was used for explicatory of entropy controlled process, where conformational changes and chemical exchange directly affect the type and distribution of obtained pyrolytic products. It was shown that external variable (i.e. the heating rate/temperature) does not change either an entire reaction mechanism (mechanistic nature of MG and AD pyrolyses) or transition state, but it changes activation enthalpy and activation entropy which lead to differences in terms of heat energy consumption, pyrolysis favorability and thus rates of generation of activated complex among feedstocks. To investigate the interplay of catalysts (present in feedstocks as minerals) and reactants, selective energy transfer (SET) model was applied. The model showed an activity of catalyst with different outputs towards two reactants, lignin part of the structure in MG and 1,8-cineole in AD. It was shown that AD is more convenient for thermal conversion than MG, regarding to lower transformation energy requirement, higher reactivity, as well as much faster accumulation of products. © 2023 Elsevier B.V.",
journal = "Industrial Crops and Products",
title = "Kinetic and thermodynamic compensation phenomena in C3 and C4 energy crops pyrolysis: Implications on reaction mechanisms and product distributions",
volume = "194",
doi = "10.1016/j.indcrop.2023.116275"
}
Janković, B. Ž., Manić, N. G., Popović, M., Cvetković, S., Dželetović, Ž.,& Stojiljković, D.. (2023). Kinetic and thermodynamic compensation phenomena in C3 and C4 energy crops pyrolysis: Implications on reaction mechanisms and product distributions. in Industrial Crops and Products, 194.
https://doi.org/10.1016/j.indcrop.2023.116275
Janković BŽ, Manić NG, Popović M, Cvetković S, Dželetović Ž, Stojiljković D. Kinetic and thermodynamic compensation phenomena in C3 and C4 energy crops pyrolysis: Implications on reaction mechanisms and product distributions. in Industrial Crops and Products. 2023;194.
doi:10.1016/j.indcrop.2023.116275 .
Janković, Bojan Ž., Manić, Nebojša G., Popović, Mina, Cvetković, Slobodan, Dželetović, Željko, Stojiljković, Dragoslava, "Kinetic and thermodynamic compensation phenomena in C3 and C4 energy crops pyrolysis: Implications on reaction mechanisms and product distributions" in Industrial Crops and Products, 194 (2023),
https://doi.org/10.1016/j.indcrop.2023.116275 . .
4
4

Thermal decomposition kinetics of deep eutectic solvent (DES) based on choline chloride and magnesium chloride hexahydrate: New details on the reaction mechanism and enthalpy–entropy compensation (EEC)

Janković, Bojan Ž.; Manić, Nebojša; Perović, Ivana M.; Vujković, Milica; Zdolšek, Nikola

(2023)

TY  - JOUR
AU  - Janković, Bojan Ž.
AU  - Manić, Nebojša
AU  - Perović, Ivana M.
AU  - Vujković, Milica
AU  - Zdolšek, Nikola
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10739
AB  - In recent years, deep eutectic solvents (DESs) have attracted considerable attention, and they have been applied in many fields, such as dissolution and separation, electrochemistry, materials preparation, reaction, and catalysis. In this paper, a detailed thermal decomposition mechanism of DES-type II (consisting choline chloride (ChCl) and magnesium chloride hexahydrate (MgCl2·6H2O) in a molar ratio 2:1 (MgCl2·6H2O-[Ch]Cl)) was explained, using thermal analysis techniques. Physicochemical clarification of overall thermal decomposition mechanism and the influence of enthalpy–entropy compensation (EEC) on reactions mechanism emerging are presented for the first time, in favor of this DES type. In the kinetic analysis of the decomposition process, two approaches were used: model-free (inverse) and model-based (direct) methods. It was found that thermodynamic principles in the form of EEC are the source of kinetic compensation effect (KCE) during MgCl2·6H2O-[Ch]Cl thermal decomposition, as a consequence of the effects of molecular interactions. Key phenomenon in the complex multiple step process represents a parallel dehydration steps of MgCl2·6H2O in DES, leading to formation of intermediates, such as [MgCl1(H2O)5]1+ and [MgCl2(H2O)4]. It was established that formation of final products (Mg(OH)2 and MgOHCl) requires a higher expenditure of energy to overcome a high potential barrier, where reaction system compensates this energy via hydrogen bonding disruption. This was confirmed by the identification of a specific ‘oscillator’, flagged as Hsingle bondOsingle bondH···Cl hydrogen bond donating system of the energy (“heat bath”). All kinetic parameters and mechanisms of individual reaction steps were confirmed by numerical optimization of the process and modulated dynamic predictions.
T2  - Journal of Molecular Liquids
T1  - Thermal decomposition kinetics of deep eutectic solvent (DES) based on choline chloride and magnesium chloride hexahydrate: New details on the reaction mechanism and enthalpy–entropy compensation (EEC)
VL  - 374
SP  - 121274
DO  - 10.1016/j.molliq.2023.121274
ER  - 
@article{
author = "Janković, Bojan Ž. and Manić, Nebojša and Perović, Ivana M. and Vujković, Milica and Zdolšek, Nikola",
year = "2023",
abstract = "In recent years, deep eutectic solvents (DESs) have attracted considerable attention, and they have been applied in many fields, such as dissolution and separation, electrochemistry, materials preparation, reaction, and catalysis. In this paper, a detailed thermal decomposition mechanism of DES-type II (consisting choline chloride (ChCl) and magnesium chloride hexahydrate (MgCl2·6H2O) in a molar ratio 2:1 (MgCl2·6H2O-[Ch]Cl)) was explained, using thermal analysis techniques. Physicochemical clarification of overall thermal decomposition mechanism and the influence of enthalpy–entropy compensation (EEC) on reactions mechanism emerging are presented for the first time, in favor of this DES type. In the kinetic analysis of the decomposition process, two approaches were used: model-free (inverse) and model-based (direct) methods. It was found that thermodynamic principles in the form of EEC are the source of kinetic compensation effect (KCE) during MgCl2·6H2O-[Ch]Cl thermal decomposition, as a consequence of the effects of molecular interactions. Key phenomenon in the complex multiple step process represents a parallel dehydration steps of MgCl2·6H2O in DES, leading to formation of intermediates, such as [MgCl1(H2O)5]1+ and [MgCl2(H2O)4]. It was established that formation of final products (Mg(OH)2 and MgOHCl) requires a higher expenditure of energy to overcome a high potential barrier, where reaction system compensates this energy via hydrogen bonding disruption. This was confirmed by the identification of a specific ‘oscillator’, flagged as Hsingle bondOsingle bondH···Cl hydrogen bond donating system of the energy (“heat bath”). All kinetic parameters and mechanisms of individual reaction steps were confirmed by numerical optimization of the process and modulated dynamic predictions.",
journal = "Journal of Molecular Liquids",
title = "Thermal decomposition kinetics of deep eutectic solvent (DES) based on choline chloride and magnesium chloride hexahydrate: New details on the reaction mechanism and enthalpy–entropy compensation (EEC)",
volume = "374",
pages = "121274",
doi = "10.1016/j.molliq.2023.121274"
}
Janković, B. Ž., Manić, N., Perović, I. M., Vujković, M.,& Zdolšek, N.. (2023). Thermal decomposition kinetics of deep eutectic solvent (DES) based on choline chloride and magnesium chloride hexahydrate: New details on the reaction mechanism and enthalpy–entropy compensation (EEC). in Journal of Molecular Liquids, 374, 121274.
https://doi.org/10.1016/j.molliq.2023.121274
Janković BŽ, Manić N, Perović IM, Vujković M, Zdolšek N. Thermal decomposition kinetics of deep eutectic solvent (DES) based on choline chloride and magnesium chloride hexahydrate: New details on the reaction mechanism and enthalpy–entropy compensation (EEC). in Journal of Molecular Liquids. 2023;374:121274.
doi:10.1016/j.molliq.2023.121274 .
Janković, Bojan Ž., Manić, Nebojša, Perović, Ivana M., Vujković, Milica, Zdolšek, Nikola, "Thermal decomposition kinetics of deep eutectic solvent (DES) based on choline chloride and magnesium chloride hexahydrate: New details on the reaction mechanism and enthalpy–entropy compensation (EEC)" in Journal of Molecular Liquids, 374 (2023):121274,
https://doi.org/10.1016/j.molliq.2023.121274 . .
5
5

Biomineral nanocomposite scaffold (CaCO3/PVA based) carrier for improved stability of vitamin D3: characterization analysis and material properties

Janković, Bojan; Papović, Snežana; Vraneš, Milan; Knežević, Teodora; Pržulj, Sanja; Zeljković, Saša; Veličković, Suzana; Veljković, Filip; Jelić, Dijana

(2023)

TY  - JOUR
AU  - Janković, Bojan
AU  - Papović, Snežana
AU  - Vraneš, Milan
AU  - Knežević, Teodora
AU  - Pržulj, Sanja
AU  - Zeljković, Saša
AU  - Veličković, Suzana
AU  - Veljković, Filip
AU  - Jelić, Dijana
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10850
AB  - A powdered PVA/CaCO3 nanocomposite carrier was successfully fabricated for effective loading of small bioactive molecules, such as vitamin D3 (VD3). Generation of, namely, VD3/PVA/CaCO3 nanocomposite scaffold was carried out through an adsorption mechanism as a loading route of an active compound onto a powder carrier. Developed composites were characterized by structural, morphological and thermal analyses techniques, such as X-ray powder diffraction (XRPD), Fourier-transform infrared (FTIR) spectroscopy, MALDI (matrix-assisted laser desorption/ionization) – mass spectrometry (MS), Brunauer–Emmett–Teller (BET) – NLDFT (Non-local Density Functional Theory) method, scanning electron microscopy (SEM), simultaneous TG-DTG and coupled TG-MS. XRD results showed that the average crystallite size of synthesized VD3/PVA/CaCO3 amounts 32.93 nm exhibiting microstrain presence, where PVA incorporation causes non-uniform calcite lattice distortion. SEM analysis showed that VD3/PVA/CaCO3 nanocomposite scaffold contains agglomerated rhomboidal calcite particles with VD3 particles of irregular shapes attached. Fabricated VD3/PVA/CaCO3 clearly showed the existence of calcite “staircase” dendrites as the aftermath of inhibiting the effect of impurities on the growth of crystals in normal directions. It was determined that the decomposition of PVA additionally enhances the thermal stability of VD3, through the stabilization effect by acting on van der Waal’s forces during polyene formation, confirmed by MALDI-TOF MS results.
T2  - Journal of Materials Science
T1  - Biomineral nanocomposite scaffold (CaCO3/PVA based) carrier for improved stability of vitamin D3: characterization analysis and material properties
VL  - 58
IS  - 15
SP  - 6580
EP  - 6601
DO  - 10.1007/s10853-023-08453-z
ER  - 
@article{
author = "Janković, Bojan and Papović, Snežana and Vraneš, Milan and Knežević, Teodora and Pržulj, Sanja and Zeljković, Saša and Veličković, Suzana and Veljković, Filip and Jelić, Dijana",
year = "2023",
abstract = "A powdered PVA/CaCO3 nanocomposite carrier was successfully fabricated for effective loading of small bioactive molecules, such as vitamin D3 (VD3). Generation of, namely, VD3/PVA/CaCO3 nanocomposite scaffold was carried out through an adsorption mechanism as a loading route of an active compound onto a powder carrier. Developed composites were characterized by structural, morphological and thermal analyses techniques, such as X-ray powder diffraction (XRPD), Fourier-transform infrared (FTIR) spectroscopy, MALDI (matrix-assisted laser desorption/ionization) – mass spectrometry (MS), Brunauer–Emmett–Teller (BET) – NLDFT (Non-local Density Functional Theory) method, scanning electron microscopy (SEM), simultaneous TG-DTG and coupled TG-MS. XRD results showed that the average crystallite size of synthesized VD3/PVA/CaCO3 amounts 32.93 nm exhibiting microstrain presence, where PVA incorporation causes non-uniform calcite lattice distortion. SEM analysis showed that VD3/PVA/CaCO3 nanocomposite scaffold contains agglomerated rhomboidal calcite particles with VD3 particles of irregular shapes attached. Fabricated VD3/PVA/CaCO3 clearly showed the existence of calcite “staircase” dendrites as the aftermath of inhibiting the effect of impurities on the growth of crystals in normal directions. It was determined that the decomposition of PVA additionally enhances the thermal stability of VD3, through the stabilization effect by acting on van der Waal’s forces during polyene formation, confirmed by MALDI-TOF MS results.",
journal = "Journal of Materials Science",
title = "Biomineral nanocomposite scaffold (CaCO3/PVA based) carrier for improved stability of vitamin D3: characterization analysis and material properties",
volume = "58",
number = "15",
pages = "6580-6601",
doi = "10.1007/s10853-023-08453-z"
}
Janković, B., Papović, S., Vraneš, M., Knežević, T., Pržulj, S., Zeljković, S., Veličković, S., Veljković, F.,& Jelić, D.. (2023). Biomineral nanocomposite scaffold (CaCO3/PVA based) carrier for improved stability of vitamin D3: characterization analysis and material properties. in Journal of Materials Science, 58(15), 6580-6601.
https://doi.org/10.1007/s10853-023-08453-z
Janković B, Papović S, Vraneš M, Knežević T, Pržulj S, Zeljković S, Veličković S, Veljković F, Jelić D. Biomineral nanocomposite scaffold (CaCO3/PVA based) carrier for improved stability of vitamin D3: characterization analysis and material properties. in Journal of Materials Science. 2023;58(15):6580-6601.
doi:10.1007/s10853-023-08453-z .
Janković, Bojan, Papović, Snežana, Vraneš, Milan, Knežević, Teodora, Pržulj, Sanja, Zeljković, Saša, Veličković, Suzana, Veljković, Filip, Jelić, Dijana, "Biomineral nanocomposite scaffold (CaCO3/PVA based) carrier for improved stability of vitamin D3: characterization analysis and material properties" in Journal of Materials Science, 58, no. 15 (2023):6580-6601,
https://doi.org/10.1007/s10853-023-08453-z . .
1
1

Applications of thermogravimetric analysis (TGA) for biomass thermal characterization

Janković, Bojan Ž.; Manić, Nebojša; Radojević, Miloš B.

(2023)

TY  - CHAP
AU  - Janković, Bojan Ž.
AU  - Manić, Nebojša
AU  - Radojević, Miloš B.
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11465
AB  - Thermal analysis represents a group of techniques that analyse various physical and/or chemical properties of a sample as a function of temperature, during heating or cooling according to a certain temperature program. In order to obtain accurate results, the precise measurement of sample mass and temperatures are crucial. For that reason, the development of thermo-analytical (TA) techniques was conditioned by development of sufficiently precise instruments for measuring temperature and other characteristics of substances, such as changes in mass, enthalpy (heat), deformation, dimensions, electrical and magnetic properties. In this chapter, emphasis was placed on the description of the operation of thermogravimetric (TG) analyser and the influence of various experimental parameters on the quality of measurements in different reaction atmospheres. In regard to diversity of biomass sample properties, special attention is given to the adaption of experimental procedures for biomass thermal characterization by non-isothermal TG-runs. It was considered the impact of sample homogeneity determined by proper mechanical preparation. Additionally, the application of the calibration procedures and baseline correction measurements for obtaining more precise output data was shown. The study of the measurement accuracy, together with the reproducibility and repeatability required for the accurate thermal characterization of biomass samples by TG were implemented. © 2023 Nova Science Publishers, Inc. All rights reserved.
T2  - The Fundamentals of Thermal Analysis
T1  - Applications of thermogravimetric analysis (TGA) for biomass thermal characterization
SP  - 1
EP  - 52
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11465
ER  - 
@inbook{
author = "Janković, Bojan Ž. and Manić, Nebojša and Radojević, Miloš B.",
year = "2023",
abstract = "Thermal analysis represents a group of techniques that analyse various physical and/or chemical properties of a sample as a function of temperature, during heating or cooling according to a certain temperature program. In order to obtain accurate results, the precise measurement of sample mass and temperatures are crucial. For that reason, the development of thermo-analytical (TA) techniques was conditioned by development of sufficiently precise instruments for measuring temperature and other characteristics of substances, such as changes in mass, enthalpy (heat), deformation, dimensions, electrical and magnetic properties. In this chapter, emphasis was placed on the description of the operation of thermogravimetric (TG) analyser and the influence of various experimental parameters on the quality of measurements in different reaction atmospheres. In regard to diversity of biomass sample properties, special attention is given to the adaption of experimental procedures for biomass thermal characterization by non-isothermal TG-runs. It was considered the impact of sample homogeneity determined by proper mechanical preparation. Additionally, the application of the calibration procedures and baseline correction measurements for obtaining more precise output data was shown. The study of the measurement accuracy, together with the reproducibility and repeatability required for the accurate thermal characterization of biomass samples by TG were implemented. © 2023 Nova Science Publishers, Inc. All rights reserved.",
journal = "The Fundamentals of Thermal Analysis",
booktitle = "Applications of thermogravimetric analysis (TGA) for biomass thermal characterization",
pages = "1-52",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11465"
}
Janković, B. Ž., Manić, N.,& Radojević, M. B.. (2023). Applications of thermogravimetric analysis (TGA) for biomass thermal characterization. in The Fundamentals of Thermal Analysis, 1-52.
https://hdl.handle.net/21.15107/rcub_vinar_11465
Janković BŽ, Manić N, Radojević MB. Applications of thermogravimetric analysis (TGA) for biomass thermal characterization. in The Fundamentals of Thermal Analysis. 2023;:1-52.
https://hdl.handle.net/21.15107/rcub_vinar_11465 .
Janković, Bojan Ž., Manić, Nebojša, Radojević, Miloš B., "Applications of thermogravimetric analysis (TGA) for biomass thermal characterization" in The Fundamentals of Thermal Analysis (2023):1-52,
https://hdl.handle.net/21.15107/rcub_vinar_11465 .