Janković, Bojan Ž.

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Authority KeyName Variants
orcid::0000-0001-5232-4160
  • Janković, Bojan Ž. (48)
  • Janković, Bojan (1)
Projects
Dynamics of nonlinear physicochemical and biochemical systems with modeling and predicting of their behavior under nonequilibrium conditions 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” Size-, shape- and structure- dependent properties of nanoparticles and nanocomposites
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
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 Ministry of Education, Science and Technological Development of the Republic of Serbia
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"
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 Fizička hemija dinamičkih stanja i struktura neravnotežnih sistema - od monotone do oscilatorne evolucije i haosa
Development of technological processes for obtaining of ecological materials based on nonmetallic minerals Ministry of Science and Environmental Protection of Serbia [142025, 142047, 142050]
Ministry of Science and Environmental Protection of Serbia [142025, 142050] University of Pamplona - Internal Project 2-2017

Author's Bibliography

Improved TGA-MS measurements for evolved gas analysis (EGA) during pyrolysis process of various biomass feedstocks. Syngas energy balance determination

Radojević, Miloš; Janković, Bojan Ž.; Stojiljković, Dragoslava; Jovanović, Vladimir; Čeković, Ivana; Manić, Nebojša

(2021)

TY  - JOUR
AU  - Radojević, Miloš
AU  - Janković, Bojan Ž.
AU  - Stojiljković, Dragoslava
AU  - Jovanović, Vladimir
AU  - Čeković, Ivana
AU  - Manić, Nebojša
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9138
AB  - This paper provides in-depth knowledge about the evolved gas analysis interpretation via newly proposed semi-quantitative approach, arising from thermogravimetric analysis (TGA) – mass spectrometry (MS) coupled measurements, for studying pyrolysis behavior of three kinds of biomass waste materials (spent coffee grounds, beech sawdust and wheat straw). TGA – MS coupling allows accurate correlation between molecular ion peak and fragment peaks to the corresponding mass loss rates from derivative thermogravimetry curves. Within proposed semi-quantitative analysis, MS spectra were interpreted through the comparative analysis of compounds fragments and of the compound itself, where the single atomic mass unit was identified by multiple compounds exhibition. It was shown that by this procedure which involves overlapping multiple curves supervising, the identification of gases in volatiles complex scheme becomes more simplified. By setting up semi-quantitative formulas, easy and reliable calculations of gaseous products yield and syngas energy capacities are possible to achieve. The H2/CO ratio derived from the proposed method for wood waste product (sawdust) is in an excellent agreement with H2/CO ratio for sawdust syngas production, in fuel reactor for biomass gasification and H2 production. © 2021 Elsevier B.V.
T2  - Thermochimica Acta
T1  - Improved TGA-MS measurements for evolved gas analysis (EGA) during pyrolysis process of various biomass feedstocks. Syngas energy balance determination
VL  - 699
SP  - 178912
DO  - 10.1016/j.tca.2021.178912
ER  - 
@article{
author = "Radojević, Miloš and Janković, Bojan Ž. and Stojiljković, Dragoslava and Jovanović, Vladimir and Čeković, Ivana and Manić, Nebojša",
year = "2021",
abstract = "This paper provides in-depth knowledge about the evolved gas analysis interpretation via newly proposed semi-quantitative approach, arising from thermogravimetric analysis (TGA) – mass spectrometry (MS) coupled measurements, for studying pyrolysis behavior of three kinds of biomass waste materials (spent coffee grounds, beech sawdust and wheat straw). TGA – MS coupling allows accurate correlation between molecular ion peak and fragment peaks to the corresponding mass loss rates from derivative thermogravimetry curves. Within proposed semi-quantitative analysis, MS spectra were interpreted through the comparative analysis of compounds fragments and of the compound itself, where the single atomic mass unit was identified by multiple compounds exhibition. It was shown that by this procedure which involves overlapping multiple curves supervising, the identification of gases in volatiles complex scheme becomes more simplified. By setting up semi-quantitative formulas, easy and reliable calculations of gaseous products yield and syngas energy capacities are possible to achieve. The H2/CO ratio derived from the proposed method for wood waste product (sawdust) is in an excellent agreement with H2/CO ratio for sawdust syngas production, in fuel reactor for biomass gasification and H2 production. © 2021 Elsevier B.V.",
journal = "Thermochimica Acta",
title = "Improved TGA-MS measurements for evolved gas analysis (EGA) during pyrolysis process of various biomass feedstocks. Syngas energy balance determination",
volume = "699",
pages = "178912",
doi = "10.1016/j.tca.2021.178912"
}
Radojević, M., Janković, B. Ž., Stojiljković, D., Jovanović, V., Čeković, I.,& Manić, N.. (2021). Improved TGA-MS measurements for evolved gas analysis (EGA) during pyrolysis process of various biomass feedstocks. Syngas energy balance determination. in Thermochimica Acta, 699, 178912.
https://doi.org/10.1016/j.tca.2021.178912
Radojević M, Janković BŽ, Stojiljković D, Jovanović V, Čeković I, Manić N. Improved TGA-MS measurements for evolved gas analysis (EGA) during pyrolysis process of various biomass feedstocks. Syngas energy balance determination. in Thermochimica Acta. 2021;699:178912.
doi:10.1016/j.tca.2021.178912 .
Radojević, Miloš, Janković, Bojan Ž., Stojiljković, Dragoslava, Jovanović, Vladimir, Čeković, Ivana, Manić, Nebojša, "Improved TGA-MS measurements for evolved gas analysis (EGA) during pyrolysis process of various biomass feedstocks. Syngas energy balance determination" in Thermochimica Acta, 699 (2021):178912,
https://doi.org/10.1016/j.tca.2021.178912 . .
2

Pyrolysis kinetics of Poplar fluff bio-char produced at high carbonization temperature: A mechanistic study and isothermal life-time prediction

Janković, Bojan; Manić, Nebojša; Dodevski, Vladimir

(2021)

TY  - JOUR
AU  - Janković, Bojan
AU  - Manić, Nebojša
AU  - Dodevski, Vladimir
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9161
AB  - This paper provides insights into understanding the physical and chemical changes that take place during re-heating process of Poplar fluff bio-char derived by carbonization at high operating temperature (850 °C). Bio-char re-heating experiments were performed by simultaneous TGA-DTG-DSC techniques in N2 atmosphere at 5, 10, 15 and 20 °C min−1. Kinetic modeling of the process was done through implementation of model-free and model-based approaches. It was identified that re-heating process contains two stages. The first was described by single consecutive reaction step (up to 200 °C) which is attributed to removal of physisorbed moisture at surface and in pores of carbonized material, while second was described by multiple reactions, including one consecutive step and two competitive steps. In the last, consecutive pathway includes reduction of PAH compounds (400–600 °C) into smaller ones, changing degree of condensation of carbon structure continuously. Competitive steps encompass competition between C10H8 (naphthalene) (700–780 °C) and C9H8 (indene) (700–750 °C) molecules decomposition. It was found that used heating rates have great influence on regulating the amount of gaseous (combustible) products from these reactions. It was established that internal heat and mass transfer processes control the release of products. Changing the pyrolysis mechanism with temperature of carbonized bio-char is the main factor for occurrence of true kinetic compensation effect, which is also discussed by applied isothermal life-time analysis. © 2021 Elsevier Ltd
T2  - Fuel
T1  - Pyrolysis kinetics of Poplar fluff bio-char produced at high carbonization temperature: A mechanistic study and isothermal life-time prediction
VL  - 296
SP  - 120637
DO  - 10.1016/j.fuel.2021.120637
ER  - 
@article{
author = "Janković, Bojan and Manić, Nebojša and Dodevski, Vladimir",
year = "2021",
abstract = "This paper provides insights into understanding the physical and chemical changes that take place during re-heating process of Poplar fluff bio-char derived by carbonization at high operating temperature (850 °C). Bio-char re-heating experiments were performed by simultaneous TGA-DTG-DSC techniques in N2 atmosphere at 5, 10, 15 and 20 °C min−1. Kinetic modeling of the process was done through implementation of model-free and model-based approaches. It was identified that re-heating process contains two stages. The first was described by single consecutive reaction step (up to 200 °C) which is attributed to removal of physisorbed moisture at surface and in pores of carbonized material, while second was described by multiple reactions, including one consecutive step and two competitive steps. In the last, consecutive pathway includes reduction of PAH compounds (400–600 °C) into smaller ones, changing degree of condensation of carbon structure continuously. Competitive steps encompass competition between C10H8 (naphthalene) (700–780 °C) and C9H8 (indene) (700–750 °C) molecules decomposition. It was found that used heating rates have great influence on regulating the amount of gaseous (combustible) products from these reactions. It was established that internal heat and mass transfer processes control the release of products. Changing the pyrolysis mechanism with temperature of carbonized bio-char is the main factor for occurrence of true kinetic compensation effect, which is also discussed by applied isothermal life-time analysis. © 2021 Elsevier Ltd",
journal = "Fuel",
title = "Pyrolysis kinetics of Poplar fluff bio-char produced at high carbonization temperature: A mechanistic study and isothermal life-time prediction",
volume = "296",
pages = "120637",
doi = "10.1016/j.fuel.2021.120637"
}
Janković, B., Manić, N.,& Dodevski, V.. (2021). Pyrolysis kinetics of Poplar fluff bio-char produced at high carbonization temperature: A mechanistic study and isothermal life-time prediction. in Fuel, 296, 120637.
https://doi.org/10.1016/j.fuel.2021.120637
Janković B, Manić N, Dodevski V. Pyrolysis kinetics of Poplar fluff bio-char produced at high carbonization temperature: A mechanistic study and isothermal life-time prediction. in Fuel. 2021;296:120637.
doi:10.1016/j.fuel.2021.120637 .
Janković, Bojan, Manić, Nebojša, Dodevski, Vladimir, "Pyrolysis kinetics of Poplar fluff bio-char produced at high carbonization temperature: A mechanistic study and isothermal life-time prediction" in Fuel, 296 (2021):120637,
https://doi.org/10.1016/j.fuel.2021.120637 . .
1

Carbon dioxide activation of the plane tree seeds derived bio-char: Kinetic properties and application

Dodevski, Vladimir; Janković, Bojan Ž.; Mirković, Miljana M.; Kragović, Milan M.; Radović, Ivana; Veljković, Filip M.; Stojmenović, Marija

(2020)

TY  - JOUR
AU  - Dodevski, Vladimir
AU  - Janković, Bojan Ž.
AU  - Mirković, Miljana M.
AU  - Kragović, Milan M.
AU  - Radović, Ivana
AU  - Veljković, Filip M.
AU  - Stojmenović, Marija
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8922
AB  - Goal of this work is to establish technical feasibility and fundamentals of producing activated carbon from plane tree seeds biomass for porous materials derivation. Bio-chars produced via carbonization from plane tree seeds precursor were activated in CO2 at 750 and 850?C, during various residence times. Their surface area and porosity were characterized by N2 adsorption at 77 K. Surface areas of activated carbons can be correlated with kinetics mechanism and activation energy magnitudes of oxidation reaction by CO2, which are closely related to applied activation temperature. Result showed that high temperature activated carbon had higher gas adsorption as compared to activated carbon obtained from lower temperature during two-hour residence time. Breakthrough behavior was detected at 850?C where surface reactions dominate, and it is characterized by autocatalytic kinetic model under designed conditions. Both, temperature and CO2 concentration in vicinity of solid surface effect on breakthrough time of adsorbent. Derived bio-chars are converted into high quality activated carbons, with surface area of 776.55 m2/g, where micro-pores with pore diameters less than 2 nm prevail. Produced activated carbons have properties comparable with commercially available activated carbons, which can be successfully used for removal of harmful gaseous pollutants toward air purification.
T2  - Thermal Science
T1  - Carbon dioxide activation of the plane tree seeds derived bio-char: Kinetic properties and application
VL  - 24
IS  - 6 (Part A)
SP  - 3807
EP  - 3821
DO  - 10.2298/TSCI190913064D
ER  - 
@article{
author = "Dodevski, Vladimir and Janković, Bojan Ž. and Mirković, Miljana M. and Kragović, Milan M. and Radović, Ivana and Veljković, Filip M. and Stojmenović, Marija",
year = "2020",
abstract = "Goal of this work is to establish technical feasibility and fundamentals of producing activated carbon from plane tree seeds biomass for porous materials derivation. Bio-chars produced via carbonization from plane tree seeds precursor were activated in CO2 at 750 and 850?C, during various residence times. Their surface area and porosity were characterized by N2 adsorption at 77 K. Surface areas of activated carbons can be correlated with kinetics mechanism and activation energy magnitudes of oxidation reaction by CO2, which are closely related to applied activation temperature. Result showed that high temperature activated carbon had higher gas adsorption as compared to activated carbon obtained from lower temperature during two-hour residence time. Breakthrough behavior was detected at 850?C where surface reactions dominate, and it is characterized by autocatalytic kinetic model under designed conditions. Both, temperature and CO2 concentration in vicinity of solid surface effect on breakthrough time of adsorbent. Derived bio-chars are converted into high quality activated carbons, with surface area of 776.55 m2/g, where micro-pores with pore diameters less than 2 nm prevail. Produced activated carbons have properties comparable with commercially available activated carbons, which can be successfully used for removal of harmful gaseous pollutants toward air purification.",
journal = "Thermal Science",
title = "Carbon dioxide activation of the plane tree seeds derived bio-char: Kinetic properties and application",
volume = "24",
number = "6 (Part A)",
pages = "3807-3821",
doi = "10.2298/TSCI190913064D"
}
Dodevski, V., Janković, B. Ž., Mirković, M. M., Kragović, M. M., Radović, I., Veljković, F. M.,& Stojmenović, M.. (2020). Carbon dioxide activation of the plane tree seeds derived bio-char: Kinetic properties and application. in Thermal Science, 24(6 (Part A)), 3807-3821.
https://doi.org/10.2298/TSCI190913064D
Dodevski V, Janković BŽ, Mirković MM, Kragović MM, Radović I, Veljković FM, Stojmenović M. Carbon dioxide activation of the plane tree seeds derived bio-char: Kinetic properties and application. in Thermal Science. 2020;24(6 (Part A)):3807-3821.
doi:10.2298/TSCI190913064D .
Dodevski, Vladimir, Janković, Bojan Ž., Mirković, Miljana M., Kragović, Milan M., Radović, Ivana, Veljković, Filip M., Stojmenović, Marija, "Carbon dioxide activation of the plane tree seeds derived bio-char: Kinetic properties and application" in Thermal Science, 24, no. 6 (Part A) (2020):3807-3821,
https://doi.org/10.2298/TSCI190913064D . .

Thermo-oxidative evolution and physico-chemical characterization of seashell waste for application in commercial sectors

Janković, Bojan Ž.; Smičiklas, Ivana D.; Manić, Nebojša G.; Mraković, Ana Đ.; Mandić, Milica; Veljović, Đorđe N.; Jović, Mihajlo

(2020)

TY  - JOUR
AU  - Janković, Bojan Ž.
AU  - Smičiklas, Ivana D.
AU  - Manić, Nebojša G.
AU  - Mraković, Ana Đ.
AU  - Mandić, Milica
AU  - Veljović, Đorđe N.
AU  - Jović, Mihajlo
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8836
AB  - Thermo-oxidative degradation of mollusk shells to CaO through intermediate phase of CaCO3 has been investigated using various analytical techniques. Powders of shells species (Dosinia exoleta and Ostrea edulis), with particle size fractions of 0.045 – 0.125 mm, 0.125–0.2 mm, and 0.2–1 mm, were subjected to degradation at the various heating rates (5, 10, 15 and 20 °C min−1). Degradation pathway of this carbonate-rich waste material has not yet been analyzed in detail at particulate level. Understanding transformation process in air should lead to control over yield and morphology of final product. Thermogravimetric analysis (TGA) and X-ray diffraction (XRD) techniques were used to benchmark transformation steps at different heating rates and final decarbonation temperatures, while scanning electron microscope (SEM) was used to analyze the effect of temperature on evolution of morphological changes for particles of different fractions. It was found that sintering in the presence of carbon dioxide (CO2) could be triggered by agglomeration of CaO crystals, enhanced by CO2 adsorption that increases surface energy. © 2020 Elsevier B.V.
T2  - Thermochimica Acta
T1  - Thermo-oxidative evolution and physico-chemical characterization of seashell waste for application in commercial sectors
VL  - 686
SP  - 178568
DO  - 10.1016/j.tca.2020.178568
ER  - 
@article{
author = "Janković, Bojan Ž. and Smičiklas, Ivana D. and Manić, Nebojša G. and Mraković, Ana Đ. and Mandić, Milica and Veljović, Đorđe N. and Jović, Mihajlo",
year = "2020",
abstract = "Thermo-oxidative degradation of mollusk shells to CaO through intermediate phase of CaCO3 has been investigated using various analytical techniques. Powders of shells species (Dosinia exoleta and Ostrea edulis), with particle size fractions of 0.045 – 0.125 mm, 0.125–0.2 mm, and 0.2–1 mm, were subjected to degradation at the various heating rates (5, 10, 15 and 20 °C min−1). Degradation pathway of this carbonate-rich waste material has not yet been analyzed in detail at particulate level. Understanding transformation process in air should lead to control over yield and morphology of final product. Thermogravimetric analysis (TGA) and X-ray diffraction (XRD) techniques were used to benchmark transformation steps at different heating rates and final decarbonation temperatures, while scanning electron microscope (SEM) was used to analyze the effect of temperature on evolution of morphological changes for particles of different fractions. It was found that sintering in the presence of carbon dioxide (CO2) could be triggered by agglomeration of CaO crystals, enhanced by CO2 adsorption that increases surface energy. © 2020 Elsevier B.V.",
journal = "Thermochimica Acta",
title = "Thermo-oxidative evolution and physico-chemical characterization of seashell waste for application in commercial sectors",
volume = "686",
pages = "178568",
doi = "10.1016/j.tca.2020.178568"
}
Janković, B. Ž., Smičiklas, I. D., Manić, N. G., Mraković, A. Đ., Mandić, M., Veljović, Đ. N.,& Jović, M.. (2020). Thermo-oxidative evolution and physico-chemical characterization of seashell waste for application in commercial sectors. in Thermochimica Acta, 686, 178568.
https://doi.org/10.1016/j.tca.2020.178568
Janković BŽ, Smičiklas ID, Manić NG, Mraković AĐ, Mandić M, Veljović ĐN, Jović M. Thermo-oxidative evolution and physico-chemical characterization of seashell waste for application in commercial sectors. in Thermochimica Acta. 2020;686:178568.
doi:10.1016/j.tca.2020.178568 .
Janković, Bojan Ž., Smičiklas, Ivana D., Manić, Nebojša G., Mraković, Ana Đ., Mandić, Milica, Veljović, Đorđe N., Jović, Mihajlo, "Thermo-oxidative evolution and physico-chemical characterization of seashell waste for application in commercial sectors" in Thermochimica Acta, 686 (2020):178568,
https://doi.org/10.1016/j.tca.2020.178568 . .
4
4
3

Experimental study of low-rank coals using simultaneous thermal analysis (TG–DTA) techniques under air conditions and radiation level characterization

Janković, Marija M.; Janković, Bojan Ž.; Marinović-Cincović, Milena; Porobić, Slavica; Krneta-Nikolić, Jelena D.; Sarap, Nataša

(2020)

TY  - JOUR
AU  - Janković, Marija M.
AU  - Janković, Bojan Ž.
AU  - Marinović-Cincović, Milena
AU  - Porobić, Slavica
AU  - Krneta-Nikolić, Jelena D.
AU  - Sarap, Nataša
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8905
AB  - Simultaneous thermal analysis (TG–DTA) of low-rank coals from different annual periods (2015 and 2018) which originate from Kolubara and Nikola Tesla A (TENT A) coal-fired power plants was studied to identify their combustion characteristics and self-ignition risks. In order to investigate kinetics of thermo-oxidative degradation, model-free models including the Friedman and Kissinger–Akahira–Sunose methods were applied. In accordance with obtained kinetic results, numerical optimization of combustion process was implemented. Homogeneous and heterogeneous types of ignition were identified for the tested coals, and factors that affect their occurrence are the used heating rate and volatile matter content. From thermal susceptibility graph, it was found that the tested coals expand in a wide range of self-ignition risk, depending on their coal rank. The youngest coal (TENT A (2018)) has the largest propensity to self-ignite among high-ranking coals. It was found that less tendency of 2018 coals to show true isokinetic temperature in comparison with 2015 coals is a consequence of intraparticle diffusion limitations, and change of char properties, at higher conversion values. Gamma spectrometry analysis of coals showed that higher concentration of 40K radionuclide (which is in mineral composition) may contribute through its deposition on available sites, decreasing surface area for reaction with oxidizing species. © 2020, Akadémiai Kiadó, Budapest, Hungary.
T2  - Journal of Thermal Analysis and Calorimetry
T1  - Experimental study of low-rank coals using simultaneous thermal analysis (TG–DTA) techniques under air conditions and radiation level characterization
VL  - 142
IS  - 2
SP  - 547
EP  - 564
DO  - 10.1007/s10973-020-09288-5
ER  - 
@article{
author = "Janković, Marija M. and Janković, Bojan Ž. and Marinović-Cincović, Milena and Porobić, Slavica and Krneta-Nikolić, Jelena D. and Sarap, Nataša",
year = "2020",
abstract = "Simultaneous thermal analysis (TG–DTA) of low-rank coals from different annual periods (2015 and 2018) which originate from Kolubara and Nikola Tesla A (TENT A) coal-fired power plants was studied to identify their combustion characteristics and self-ignition risks. In order to investigate kinetics of thermo-oxidative degradation, model-free models including the Friedman and Kissinger–Akahira–Sunose methods were applied. In accordance with obtained kinetic results, numerical optimization of combustion process was implemented. Homogeneous and heterogeneous types of ignition were identified for the tested coals, and factors that affect their occurrence are the used heating rate and volatile matter content. From thermal susceptibility graph, it was found that the tested coals expand in a wide range of self-ignition risk, depending on their coal rank. The youngest coal (TENT A (2018)) has the largest propensity to self-ignite among high-ranking coals. It was found that less tendency of 2018 coals to show true isokinetic temperature in comparison with 2015 coals is a consequence of intraparticle diffusion limitations, and change of char properties, at higher conversion values. Gamma spectrometry analysis of coals showed that higher concentration of 40K radionuclide (which is in mineral composition) may contribute through its deposition on available sites, decreasing surface area for reaction with oxidizing species. © 2020, Akadémiai Kiadó, Budapest, Hungary.",
journal = "Journal of Thermal Analysis and Calorimetry",
title = "Experimental study of low-rank coals using simultaneous thermal analysis (TG–DTA) techniques under air conditions and radiation level characterization",
volume = "142",
number = "2",
pages = "547-564",
doi = "10.1007/s10973-020-09288-5"
}
Janković, M. M., Janković, B. Ž., Marinović-Cincović, M., Porobić, S., Krneta-Nikolić, J. D.,& Sarap, N.. (2020). Experimental study of low-rank coals using simultaneous thermal analysis (TG–DTA) techniques under air conditions and radiation level characterization. in Journal of Thermal Analysis and Calorimetry, 142(2), 547-564.
https://doi.org/10.1007/s10973-020-09288-5
Janković MM, Janković BŽ, Marinović-Cincović M, Porobić S, Krneta-Nikolić JD, Sarap N. Experimental study of low-rank coals using simultaneous thermal analysis (TG–DTA) techniques under air conditions and radiation level characterization. in Journal of Thermal Analysis and Calorimetry. 2020;142(2):547-564.
doi:10.1007/s10973-020-09288-5 .
Janković, Marija M., Janković, Bojan Ž., Marinović-Cincović, Milena, Porobić, Slavica, Krneta-Nikolić, Jelena D., Sarap, Nataša, "Experimental study of low-rank coals using simultaneous thermal analysis (TG–DTA) techniques under air conditions and radiation level characterization" in Journal of Thermal Analysis and Calorimetry, 142, no. 2 (2020):547-564,
https://doi.org/10.1007/s10973-020-09288-5 . .
3
2
3

Apricot kernel shells pyrolysis controlled by non-isothermal simultaneous thermal analysis (STA)

Manić, Nebojša G.; Janković, Bojan Ž.; Pijović, Milena; Waisi, Hadi; Dodevski, Vladimir; Stojiljković, Dragoslava; Jovanović, Vladimir V.

(2020)

TY  - JOUR
AU  - Manić, Nebojša G.
AU  - Janković, Bojan Ž.
AU  - Pijović, Milena
AU  - Waisi, Hadi
AU  - Dodevski, Vladimir
AU  - Stojiljković, Dragoslava
AU  - Jovanović, Vladimir V.
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8904
AB  - In order to clarify relationship between apricot kernel shell biomass slow pyrolysis mechanism and its main constituents (viz. hemicelluloses, cellulose and lignin), the reactivity effects of main constituents on pyrolysis characteristics were determined by the non-isothermal simultaneous thermal analysis. It was found that four-step (parallel) reaction model is suitable for studying the slow pyrolysis process, within the semi-global model which excludes the strong interaction between biomass constituents (pseudo-components). The application of the proposed model was allowed by the results obtained from KAS iterative isoconversional (model-free) approach. The valorization of the model was confirmed by the process optimization. The complex (cumulative) apricot kernel shell pyrolysis rate curves at different heating rates are successfully resolved into the individual decomposition rate curves (arising from thermal conversion of hemicelluloses, cellulose, and primary/secondary lignin fragments) by four-parameter Fraser–Suzuki function. Besides hemicelluloses and cellulose pyrolyses, the proposed model distinguishes primary and secondary lignin reactions, which enhance the gaseous products releasing (primarily CO and CO2 gases) and charification of the solid residue (increased the bio-char yield). © 2020, Akadémiai Kiadó, Budapest, Hungary.
T2  - Journal of Thermal Analysis and Calorimetry
T1  - Apricot kernel shells pyrolysis controlled by non-isothermal simultaneous thermal analysis (STA)
VL  - 142
IS  - 2
SP  - 565
EP  - 579
DO  - 10.1007/s10973-020-09307-5
ER  - 
@article{
author = "Manić, Nebojša G. and Janković, Bojan Ž. and Pijović, Milena and Waisi, Hadi and Dodevski, Vladimir and Stojiljković, Dragoslava and Jovanović, Vladimir V.",
year = "2020",
abstract = "In order to clarify relationship between apricot kernel shell biomass slow pyrolysis mechanism and its main constituents (viz. hemicelluloses, cellulose and lignin), the reactivity effects of main constituents on pyrolysis characteristics were determined by the non-isothermal simultaneous thermal analysis. It was found that four-step (parallel) reaction model is suitable for studying the slow pyrolysis process, within the semi-global model which excludes the strong interaction between biomass constituents (pseudo-components). The application of the proposed model was allowed by the results obtained from KAS iterative isoconversional (model-free) approach. The valorization of the model was confirmed by the process optimization. The complex (cumulative) apricot kernel shell pyrolysis rate curves at different heating rates are successfully resolved into the individual decomposition rate curves (arising from thermal conversion of hemicelluloses, cellulose, and primary/secondary lignin fragments) by four-parameter Fraser–Suzuki function. Besides hemicelluloses and cellulose pyrolyses, the proposed model distinguishes primary and secondary lignin reactions, which enhance the gaseous products releasing (primarily CO and CO2 gases) and charification of the solid residue (increased the bio-char yield). © 2020, Akadémiai Kiadó, Budapest, Hungary.",
journal = "Journal of Thermal Analysis and Calorimetry",
title = "Apricot kernel shells pyrolysis controlled by non-isothermal simultaneous thermal analysis (STA)",
volume = "142",
number = "2",
pages = "565-579",
doi = "10.1007/s10973-020-09307-5"
}
Manić, N. G., Janković, B. Ž., Pijović, M., Waisi, H., Dodevski, V., Stojiljković, D.,& Jovanović, V. V.. (2020). Apricot kernel shells pyrolysis controlled by non-isothermal simultaneous thermal analysis (STA). in Journal of Thermal Analysis and Calorimetry, 142(2), 565-579.
https://doi.org/10.1007/s10973-020-09307-5
Manić NG, Janković BŽ, Pijović M, Waisi H, Dodevski V, Stojiljković D, Jovanović VV. Apricot kernel shells pyrolysis controlled by non-isothermal simultaneous thermal analysis (STA). in Journal of Thermal Analysis and Calorimetry. 2020;142(2):565-579.
doi:10.1007/s10973-020-09307-5 .
Manić, Nebojša G., Janković, Bojan Ž., Pijović, Milena, Waisi, Hadi, Dodevski, Vladimir, Stojiljković, Dragoslava, Jovanović, Vladimir V., "Apricot kernel shells pyrolysis controlled by non-isothermal simultaneous thermal analysis (STA)" in Journal of Thermal Analysis and Calorimetry, 142, no. 2 (2020):565-579,
https://doi.org/10.1007/s10973-020-09307-5 . .
5
6
5

The Pyrolysis of Waste Biomass Investigated by Simultaneous TGA-DTA-MS Measurements and Kinetic Modeling with Deconvolution Functions

Manić, Nebojša G.; Janković, Bojan Ž.; Dodevski, Vladimir; Stojiljković, Dragoslava; Jovanović, Vladimir V.

(2020)

TY  - CHAP
AU  - Manić, Nebojša G.
AU  - Janković, Bojan Ž.
AU  - Dodevski, Vladimir
AU  - Stojiljković, Dragoslava
AU  - Jovanović, Vladimir V.
PY  - 2020
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/8527
AB  - As waste biomass from fruit processing industry, apricot kernel shells have a potential for conversion to renewable energy through a thermo-chemical process such as pyrolysis. However, due to major differences of biomass characteristics as the well-known issue, it is extremely important to perform detailed analysis of biomass samples from the same type (or same species) but from different geographical regions. Regarding full characterization of considered biomass material and to facilitate further process development, in this paper, the advanced mathematical model for kinetic analysis was used. All performed kinetic modeling represents the process kinetics developed and validated on thermal decomposition studies using simultaneous thermogravimetric analysis (TGA) – differential thermal analysis (DTA) – mass spectrometry (MS) scanning, at four heating rates of 5, 10, 15 and 20 °C min−1, over temperature range 30–900 °C and under an argon (Ar) atmosphere. Model-free analysis for base prediction of decomposition process and deconvolution approach by Fraser-Suzuki functions were utilized for determination of effective activation energies (E), pre-exponential factors (A) and fractional contributions (φ), as well as for separation of overlapping reactions. Comparative study of kinetic results with emission analysis of evolved gas species was also implemented in order to determine the more comprehensive pyrolysis kinetics model. Obtained results strongly indicated that the Fraser-Suzuki deconvolution provides excellent quality of fits with experimental ones, and could be employed to predict devolatilization rates with a high probability. From energy compensation effect properties, it was revealed the existence of unconventional thermal lag due to heat demand by chemical reaction. © Springer Nature Switzerland AG 2020.
T2  - Lecture Notes in Networks and Systems
T1  - The Pyrolysis of Waste Biomass Investigated by Simultaneous TGA-DTA-MS Measurements and Kinetic Modeling with Deconvolution Functions
VL  - 90
SP  - 39
EP  - 60
DO  - 10.1007/978-3-030-30853-7_3
ER  - 
@inbook{
author = "Manić, Nebojša G. and Janković, Bojan Ž. and Dodevski, Vladimir and Stojiljković, Dragoslava and Jovanović, Vladimir V.",
year = "2020",
abstract = "As waste biomass from fruit processing industry, apricot kernel shells have a potential for conversion to renewable energy through a thermo-chemical process such as pyrolysis. However, due to major differences of biomass characteristics as the well-known issue, it is extremely important to perform detailed analysis of biomass samples from the same type (or same species) but from different geographical regions. Regarding full characterization of considered biomass material and to facilitate further process development, in this paper, the advanced mathematical model for kinetic analysis was used. All performed kinetic modeling represents the process kinetics developed and validated on thermal decomposition studies using simultaneous thermogravimetric analysis (TGA) – differential thermal analysis (DTA) – mass spectrometry (MS) scanning, at four heating rates of 5, 10, 15 and 20 °C min−1, over temperature range 30–900 °C and under an argon (Ar) atmosphere. Model-free analysis for base prediction of decomposition process and deconvolution approach by Fraser-Suzuki functions were utilized for determination of effective activation energies (E), pre-exponential factors (A) and fractional contributions (φ), as well as for separation of overlapping reactions. Comparative study of kinetic results with emission analysis of evolved gas species was also implemented in order to determine the more comprehensive pyrolysis kinetics model. Obtained results strongly indicated that the Fraser-Suzuki deconvolution provides excellent quality of fits with experimental ones, and could be employed to predict devolatilization rates with a high probability. From energy compensation effect properties, it was revealed the existence of unconventional thermal lag due to heat demand by chemical reaction. © Springer Nature Switzerland AG 2020.",
journal = "Lecture Notes in Networks and Systems",
booktitle = "The Pyrolysis of Waste Biomass Investigated by Simultaneous TGA-DTA-MS Measurements and Kinetic Modeling with Deconvolution Functions",
volume = "90",
pages = "39-60",
doi = "10.1007/978-3-030-30853-7_3"
}
Manić, N. G., Janković, B. Ž., Dodevski, V., Stojiljković, D.,& Jovanović, V. V.. (2020). The Pyrolysis of Waste Biomass Investigated by Simultaneous TGA-DTA-MS Measurements and Kinetic Modeling with Deconvolution Functions. in Lecture Notes in Networks and Systems, 90, 39-60.
https://doi.org/10.1007/978-3-030-30853-7_3
Manić NG, Janković BŽ, Dodevski V, Stojiljković D, Jovanović VV. The Pyrolysis of Waste Biomass Investigated by Simultaneous TGA-DTA-MS Measurements and Kinetic Modeling with Deconvolution Functions. in Lecture Notes in Networks and Systems. 2020;90:39-60.
doi:10.1007/978-3-030-30853-7_3 .
Manić, Nebojša G., Janković, Bojan Ž., Dodevski, Vladimir, Stojiljković, Dragoslava, Jovanović, Vladimir V., "The Pyrolysis of Waste Biomass Investigated by Simultaneous TGA-DTA-MS Measurements and Kinetic Modeling with Deconvolution Functions" in Lecture Notes in Networks and Systems, 90 (2020):39-60,
https://doi.org/10.1007/978-3-030-30853-7_3 . .
1
1
1

The assessment of spontaneous ignition potential of coals using TGA–DTG technique

Janković, Bojan Ž.; Manić, Nebojša G.; Stojiljković, Dragoslava; Jovanović, Vladimir V.

(2020)

TY  - JOUR
AU  - Janković, Bojan Ž.
AU  - Manić, Nebojša G.
AU  - Stojiljković, Dragoslava
AU  - Jovanović, Vladimir V.
PY  - 2020
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/8518
AB  - During the utilization of coal in large power plants, one of the major logistical issues is related to spontaneous ignition of the coal. This characteristic of coal depends on the rank and type of the coal, the content of the moisture and volatile matter as well as particle size distribution. This paper presents the novel approach for determination of spontaneous ignition potential of the coal developed as the internal laboratory experimental method. The experimental tests were performed by thermogravimetric analysis (TGA) and derivative thermogravimetry (DTG) of tested samples at five different heating rates: 3, 5, 7, 10 and 20 K min−1 under an air atmosphere. The TGA results were used for determination of tangent slope of the mass loss rate curves in the zone of the release of volatiles at considered heating rates for all coal samples. The linear interpolation of the data obtained by performed tangent slope analysis and heating rates provides the straight line unique for each tested sample. According to the standard method, the slope of the obtained straight line is defined as thermogravimetric index of spontaneous ignition (TGspi). In addition, a new formula for determination of TGspi index was provided. Three different coal samples were analyzed and classified according to the spontaneous ignition potential, based on the obtained values for TGspi by standard procedure and also using a newly proposed method. By varying the gradient of linear dependence of self-heating coefficient against reference temperatures (Tref,i), the mass and heat transfer limitations for different coals were discussed. © 2019 The Combustion Institute
T2  - Combustion and Flame
T1  - The assessment of spontaneous ignition potential of coals using TGA–DTG technique
VL  - 211
SP  - 32
EP  - 43
DO  - 10.1016/j.combustflame.2019.09.020
ER  - 
@article{
author = "Janković, Bojan Ž. and Manić, Nebojša G. and Stojiljković, Dragoslava and Jovanović, Vladimir V.",
year = "2020",
abstract = "During the utilization of coal in large power plants, one of the major logistical issues is related to spontaneous ignition of the coal. This characteristic of coal depends on the rank and type of the coal, the content of the moisture and volatile matter as well as particle size distribution. This paper presents the novel approach for determination of spontaneous ignition potential of the coal developed as the internal laboratory experimental method. The experimental tests were performed by thermogravimetric analysis (TGA) and derivative thermogravimetry (DTG) of tested samples at five different heating rates: 3, 5, 7, 10 and 20 K min−1 under an air atmosphere. The TGA results were used for determination of tangent slope of the mass loss rate curves in the zone of the release of volatiles at considered heating rates for all coal samples. The linear interpolation of the data obtained by performed tangent slope analysis and heating rates provides the straight line unique for each tested sample. According to the standard method, the slope of the obtained straight line is defined as thermogravimetric index of spontaneous ignition (TGspi). In addition, a new formula for determination of TGspi index was provided. Three different coal samples were analyzed and classified according to the spontaneous ignition potential, based on the obtained values for TGspi by standard procedure and also using a newly proposed method. By varying the gradient of linear dependence of self-heating coefficient against reference temperatures (Tref,i), the mass and heat transfer limitations for different coals were discussed. © 2019 The Combustion Institute",
journal = "Combustion and Flame",
title = "The assessment of spontaneous ignition potential of coals using TGA–DTG technique",
volume = "211",
pages = "32-43",
doi = "10.1016/j.combustflame.2019.09.020"
}
Janković, B. Ž., Manić, N. G., Stojiljković, D.,& Jovanović, V. V.. (2020). The assessment of spontaneous ignition potential of coals using TGA–DTG technique. in Combustion and Flame, 211, 32-43.
https://doi.org/10.1016/j.combustflame.2019.09.020
Janković BŽ, Manić NG, Stojiljković D, Jovanović VV. The assessment of spontaneous ignition potential of coals using TGA–DTG technique. in Combustion and Flame. 2020;211:32-43.
doi:10.1016/j.combustflame.2019.09.020 .
Janković, Bojan Ž., Manić, Nebojša G., Stojiljković, Dragoslava, Jovanović, Vladimir V., "The assessment of spontaneous ignition potential of coals using TGA–DTG technique" in Combustion and Flame, 211 (2020):32-43,
https://doi.org/10.1016/j.combustflame.2019.09.020 . .
8
5
6

Characterization of silicon carbide ceramics obtained from porous carbon structure achieved by plant carbonization

Dodevski, Vladimir; Pagnacco, Maja C.; Radović, Ivana; Rosić, Milena; Janković, Bojan Ž.; Stojmenović, Marija; Mitić, Vojislav V.

(2020)

TY  - JOUR
AU  - Dodevski, Vladimir
AU  - Pagnacco, Maja C.
AU  - Radović, Ivana
AU  - Rosić, Milena
AU  - Janković, Bojan Ž.
AU  - Stojmenović, Marija
AU  - Mitić, Vojislav V.
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8817
AB  - The aim of this research was to obtain a carbon solid residue by the carbonization process of biomass in an inert atmosphere which, through physical activation and chemical treatment (using TEOS - tetraethyl orthosilicate) would allow creation of highly porous and spatially distinct ordered bio-SiC ceramics. The results of carbonization experiments at several operating temperatures and activation of carbons with multiple-cycle treatments TEOS clearly showed the possibility of obtaining SiC nano-structures, after performing the carbothermal reduction at 1400 °C. The increase in the activation temperature and the duration time starts the development of the SiC particles inside the porous structure. The XRPD analysis showed that the major SiC polytype has cubic SiC (β-SiC) structure and remainder is hexagonal SiC polytypic (α-SiC) structure. It was established that the carbons obtained from carbonization of the Platanus orientalis L. plane tree fruit (PTF) precursor and activated at 850 °C with longer holding times (1 and 2 h) exhibit β-SiC (cubic) nano-wires. A possible nano-wires increment mechanism was suggested. The obtained results represent significant contribution in understanding the process as well as the main characteristics of SiC nano-materials and their possible applications.
T2  - Materials Chemistry and Physics
T1  - Characterization of silicon carbide ceramics obtained from porous carbon structure achieved by plant carbonization
VL  - 245
SP  - 122768
DO  - 10.1016/j.matchemphys.2020.122768
ER  - 
@article{
author = "Dodevski, Vladimir and Pagnacco, Maja C. and Radović, Ivana and Rosić, Milena and Janković, Bojan Ž. and Stojmenović, Marija and Mitić, Vojislav V.",
year = "2020",
abstract = "The aim of this research was to obtain a carbon solid residue by the carbonization process of biomass in an inert atmosphere which, through physical activation and chemical treatment (using TEOS - tetraethyl orthosilicate) would allow creation of highly porous and spatially distinct ordered bio-SiC ceramics. The results of carbonization experiments at several operating temperatures and activation of carbons with multiple-cycle treatments TEOS clearly showed the possibility of obtaining SiC nano-structures, after performing the carbothermal reduction at 1400 °C. The increase in the activation temperature and the duration time starts the development of the SiC particles inside the porous structure. The XRPD analysis showed that the major SiC polytype has cubic SiC (β-SiC) structure and remainder is hexagonal SiC polytypic (α-SiC) structure. It was established that the carbons obtained from carbonization of the Platanus orientalis L. plane tree fruit (PTF) precursor and activated at 850 °C with longer holding times (1 and 2 h) exhibit β-SiC (cubic) nano-wires. A possible nano-wires increment mechanism was suggested. The obtained results represent significant contribution in understanding the process as well as the main characteristics of SiC nano-materials and their possible applications.",
journal = "Materials Chemistry and Physics",
title = "Characterization of silicon carbide ceramics obtained from porous carbon structure achieved by plant carbonization",
volume = "245",
pages = "122768",
doi = "10.1016/j.matchemphys.2020.122768"
}
Dodevski, V., Pagnacco, M. C., Radović, I., Rosić, M., Janković, B. Ž., Stojmenović, M.,& Mitić, V. V.. (2020). Characterization of silicon carbide ceramics obtained from porous carbon structure achieved by plant carbonization. in Materials Chemistry and Physics, 245, 122768.
https://doi.org/10.1016/j.matchemphys.2020.122768
Dodevski V, Pagnacco MC, Radović I, Rosić M, Janković BŽ, Stojmenović M, Mitić VV. Characterization of silicon carbide ceramics obtained from porous carbon structure achieved by plant carbonization. in Materials Chemistry and Physics. 2020;245:122768.
doi:10.1016/j.matchemphys.2020.122768 .
Dodevski, Vladimir, Pagnacco, Maja C., Radović, Ivana, Rosić, Milena, Janković, Bojan Ž., Stojmenović, Marija, Mitić, Vojislav V., "Characterization of silicon carbide ceramics obtained from porous carbon structure achieved by plant carbonization" in Materials Chemistry and Physics, 245 (2020):122768,
https://doi.org/10.1016/j.matchemphys.2020.122768 . .
1
3
3
2

Characterization analysis of activated carbon derived from the carbonization process of plane tree (Platanus orientalis) seeds

Dodevski, Vladimir; Janković, Bojan Ž.; Radović, Ivana; Stojmenović, Marija; Čebela, Maria; Nikolić, Željka; Pagnacco, Maja C.; Panić, Ivan; Stanković, Miroslav

(2020)

TY  - JOUR
AU  - Dodevski, Vladimir
AU  - Janković, Bojan Ž.
AU  - Radović, Ivana
AU  - Stojmenović, Marija
AU  - Čebela, Maria
AU  - Nikolić, Željka
AU  - Pagnacco, Maja C.
AU  - Panić, Ivan
AU  - Stanković, Miroslav
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8900
AB  - In this work, plane tree seed-based activated carbons were characterized in detail for a variety of applications. The particularly important area of application would be in the artificial photosynthesis. After carbonization process of biomass precursor at 650°C, the resulting preliminary activated carbons were activated at various temperatures. The activated carbons were characterized by oxygen functionalities (a particularly important role has ester oxygen groups) which provide a unique microstructure. The chemical compositions of as-prepared activated carbons were analyzed through Fourier transform infrared and Raman spectra as well as gas chromatography–mass spectroscopy analysis, while morphology was observed by scanning electron microscopy analysis. Applied analysis showed that detected graphite mainly becomes uniformly nanocrystalline system. The current study also explored the applicability of carbon material obtained from plane tree seed as a potential gaseous adsorbent. The characterization showed that the tested material contains both mesopores and micropores, and this should be advantageous for the gas sorption process, since mesopores may provide low-resistant pathways for the diffusion of CO 2 molecules, while the micropores are the most suitable for trapping of CO 2 . The sorption process analysis (including adsorption/desorption isotherms behavior) shows indication that the rate-limiting step of CO 2 adsorption onto activated carbon is probably governed by diffusion-controlled process, especially at temperatures below 850°C.
T2  - Energy & Environment
T1  - Characterization analysis of activated carbon derived from the carbonization process of plane tree (Platanus orientalis) seeds
VL  - 31
IS  - 4
SP  - 583
EP  - 612
DO  - 10.1177/0958305X19880878
ER  - 
@article{
author = "Dodevski, Vladimir and Janković, Bojan Ž. and Radović, Ivana and Stojmenović, Marija and Čebela, Maria and Nikolić, Željka and Pagnacco, Maja C. and Panić, Ivan and Stanković, Miroslav",
year = "2020",
abstract = "In this work, plane tree seed-based activated carbons were characterized in detail for a variety of applications. The particularly important area of application would be in the artificial photosynthesis. After carbonization process of biomass precursor at 650°C, the resulting preliminary activated carbons were activated at various temperatures. The activated carbons were characterized by oxygen functionalities (a particularly important role has ester oxygen groups) which provide a unique microstructure. The chemical compositions of as-prepared activated carbons were analyzed through Fourier transform infrared and Raman spectra as well as gas chromatography–mass spectroscopy analysis, while morphology was observed by scanning electron microscopy analysis. Applied analysis showed that detected graphite mainly becomes uniformly nanocrystalline system. The current study also explored the applicability of carbon material obtained from plane tree seed as a potential gaseous adsorbent. The characterization showed that the tested material contains both mesopores and micropores, and this should be advantageous for the gas sorption process, since mesopores may provide low-resistant pathways for the diffusion of CO 2 molecules, while the micropores are the most suitable for trapping of CO 2 . The sorption process analysis (including adsorption/desorption isotherms behavior) shows indication that the rate-limiting step of CO 2 adsorption onto activated carbon is probably governed by diffusion-controlled process, especially at temperatures below 850°C.",
journal = "Energy & Environment",
title = "Characterization analysis of activated carbon derived from the carbonization process of plane tree (Platanus orientalis) seeds",
volume = "31",
number = "4",
pages = "583-612",
doi = "10.1177/0958305X19880878"
}
Dodevski, V., Janković, B. Ž., Radović, I., Stojmenović, M., Čebela, M., Nikolić, Ž., Pagnacco, M. C., Panić, I.,& Stanković, M.. (2020). Characterization analysis of activated carbon derived from the carbonization process of plane tree (Platanus orientalis) seeds. in Energy & Environment, 31(4), 583-612.
https://doi.org/10.1177/0958305X19880878
Dodevski V, Janković BŽ, Radović I, Stojmenović M, Čebela M, Nikolić Ž, Pagnacco MC, Panić I, Stanković M. Characterization analysis of activated carbon derived from the carbonization process of plane tree (Platanus orientalis) seeds. in Energy & Environment. 2020;31(4):583-612.
doi:10.1177/0958305X19880878 .
Dodevski, Vladimir, Janković, Bojan Ž., Radović, Ivana, Stojmenović, Marija, Čebela, Maria, Nikolić, Željka, Pagnacco, Maja C., Panić, Ivan, Stanković, Miroslav, "Characterization analysis of activated carbon derived from the carbonization process of plane tree (Platanus orientalis) seeds" in Energy & Environment, 31, no. 4 (2020):583-612,
https://doi.org/10.1177/0958305X19880878 . .
2
1
1

Dehydration of rhyolite: activation energy, water speciation and morphological investigation

Angelopoulos, Panagiotis M.; Manić, Nebojša; Tsakiridis, Petros; Taxiarchou, Maria; Janković, Bojan Ž.

(2020)

TY  - JOUR
AU  - Angelopoulos, Panagiotis M.
AU  - Manić, Nebojša
AU  - Tsakiridis, Petros
AU  - Taxiarchou, Maria
AU  - Janković, Bojan Ž.
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9115
AB  - Rhyolite is an extrusive, igneous rock of aluminosilicate composition that upon rapid cooling forms obsidian. Obsidian is amorphous and contains limited water portions (< 2 mass%); however, secondary hydration turns it either to perlite (H2O ≈ 2–5 mass%) or pitchstone (> 5 mass%). In the current study, kinetics of hydrous rhyolite dehydration were investigated by thermogravimetry up to 1000 °C, at heating rates of 2.5, 5, 10 and 20 °C min−1 and under inert atmosphere. The mass loss is approx. 7.6 mass%, occurs along wide temperature range (100–800 °C) and is solely attributed to the release of molecular water ((H2O)m) and hydroxyl groups (OH). Rhyolite dehydration was considered as a solid-state reaction, and the apparent activation energy (Ea) of dehydration was calculated throughout the whole conversion range (a) by applying the isoconversional Friedman and advanced Vyazovkin methods. Both methods revealed inverse sigmoid trend in Ea values versus conversion degree, possessing almost stable value of 61 ± 5 kJ mol−1 for Friedman method and 59.44 kJ mol−1 for Vyazovkin method on conversion range between 0.25 and 0.75, and sharp increase at higher conversion degree. The intensive change in Ea during dehydration progression is attributed to the change in releasing species (from (H2O)m to OH). Raman and FT-IR spectroscopy analyses of raw and partially dehydrated samples at different stages revealed that up to 300 °C mainly (H2O)m is diffused out of the material causing sample enrichment in OH groups. OH release, which occurs at relatively higher temperature, is accompanied by increase in apparent Ea value of dehydration. Concerning microstructure of raw rhyolite, it exhibits a network of micro-fractures which serve as water release routes. Upon heating, more and wider fractures are created. At 600 °C, fractures merging occurs creating voids, which constitute forerunners of the expansion phenomenon. Further temperature increase causes material softening allowing local plastic deformation, which under the high pressure that is exerted by the releasing water species incites the formation of large cavities and fractures, initiating expansion.
T2  - Journal of Thermal Analysis and Calorimetry
T1  - Dehydration of rhyolite: activation energy, water speciation and morphological investigation
VL  - 142
IS  - 1
SP  - 395
EP  - 407
DO  - 10.1007/s10973-020-10105-2
ER  - 
@article{
author = "Angelopoulos, Panagiotis M. and Manić, Nebojša and Tsakiridis, Petros and Taxiarchou, Maria and Janković, Bojan Ž.",
year = "2020",
abstract = "Rhyolite is an extrusive, igneous rock of aluminosilicate composition that upon rapid cooling forms obsidian. Obsidian is amorphous and contains limited water portions (< 2 mass%); however, secondary hydration turns it either to perlite (H2O ≈ 2–5 mass%) or pitchstone (> 5 mass%). In the current study, kinetics of hydrous rhyolite dehydration were investigated by thermogravimetry up to 1000 °C, at heating rates of 2.5, 5, 10 and 20 °C min−1 and under inert atmosphere. The mass loss is approx. 7.6 mass%, occurs along wide temperature range (100–800 °C) and is solely attributed to the release of molecular water ((H2O)m) and hydroxyl groups (OH). Rhyolite dehydration was considered as a solid-state reaction, and the apparent activation energy (Ea) of dehydration was calculated throughout the whole conversion range (a) by applying the isoconversional Friedman and advanced Vyazovkin methods. Both methods revealed inverse sigmoid trend in Ea values versus conversion degree, possessing almost stable value of 61 ± 5 kJ mol−1 for Friedman method and 59.44 kJ mol−1 for Vyazovkin method on conversion range between 0.25 and 0.75, and sharp increase at higher conversion degree. The intensive change in Ea during dehydration progression is attributed to the change in releasing species (from (H2O)m to OH). Raman and FT-IR spectroscopy analyses of raw and partially dehydrated samples at different stages revealed that up to 300 °C mainly (H2O)m is diffused out of the material causing sample enrichment in OH groups. OH release, which occurs at relatively higher temperature, is accompanied by increase in apparent Ea value of dehydration. Concerning microstructure of raw rhyolite, it exhibits a network of micro-fractures which serve as water release routes. Upon heating, more and wider fractures are created. At 600 °C, fractures merging occurs creating voids, which constitute forerunners of the expansion phenomenon. Further temperature increase causes material softening allowing local plastic deformation, which under the high pressure that is exerted by the releasing water species incites the formation of large cavities and fractures, initiating expansion.",
journal = "Journal of Thermal Analysis and Calorimetry",
title = "Dehydration of rhyolite: activation energy, water speciation and morphological investigation",
volume = "142",
number = "1",
pages = "395-407",
doi = "10.1007/s10973-020-10105-2"
}
Angelopoulos, P. M., Manić, N., Tsakiridis, P., Taxiarchou, M.,& Janković, B. Ž.. (2020). Dehydration of rhyolite: activation energy, water speciation and morphological investigation. in Journal of Thermal Analysis and Calorimetry, 142(1), 395-407.
https://doi.org/10.1007/s10973-020-10105-2
Angelopoulos PM, Manić N, Tsakiridis P, Taxiarchou M, Janković BŽ. Dehydration of rhyolite: activation energy, water speciation and morphological investigation. in Journal of Thermal Analysis and Calorimetry. 2020;142(1):395-407.
doi:10.1007/s10973-020-10105-2 .
Angelopoulos, Panagiotis M., Manić, Nebojša, Tsakiridis, Petros, Taxiarchou, Maria, Janković, Bojan Ž., "Dehydration of rhyolite: activation energy, water speciation and morphological investigation" in Journal of Thermal Analysis and Calorimetry, 142, no. 1 (2020):395-407,
https://doi.org/10.1007/s10973-020-10105-2 . .

Thermo-Analytical Characterization of Various Biomass Feedstocks for Assessments of Light Gaseous Compounds and Solid Residues

Pijović, Milena; Janković, Bojan Ž.; Stojiljković, Dragoslava; Radojević, Miloš B.; Manić, Nebojša G.

(2020)

TY  - CHAP
AU  - Pijović, Milena
AU  - Janković, Bojan Ž.
AU  - Stojiljković, Dragoslava
AU  - Radojević, Miloš B.
AU  - Manić, Nebojša G.
PY  - 2020
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/8524
AB  - Thermo-analytical characterization of selected biomasses (agricultural waste and wood biomass feedstock) through the pyrolysis process was performed under dynamic conditions. Slow pyrolysis (carbonization) regime (with a heating rate below 50 °C min−1) was selected because it favours the residual solid (bio-carbon/bio-char) in the higher yields (change in the surface area of bio-char with pyrolysis conditions was dependent on the type of biomass feedstock). Comparison of results and discussions related to obtained percentage pyro char yields from thermo-chemical conversion of biomass feedstocks were generated from simultaneous thermal analysis (STA) (TGA-DTG-DTA apparatus). The analysis of gaseous products of pyrolysis was carried out using mass spectrometry (MS) technique. Releasing of the light gaseous compounds (mainly CO, CO2, CH4, and H2 non-condensable gases) was monitored simultaneously with TGA measurements. Discussion related to this issue was performed from the aspect of the syngas production, as well as the versatility of selected biomasses in the gasification process where the various gasifying agent may be in use. © Springer Nature Switzerland AG 2020.
T2  - Lecture Notes in Networks and Systems
T1  - Thermo-Analytical Characterization of Various Biomass Feedstocks for Assessments of Light Gaseous Compounds and Solid Residues
VL  - 90
SP  - 139
EP  - 165
DO  - 10.1007/978-3-030-30853-7_9
ER  - 
@inbook{
author = "Pijović, Milena and Janković, Bojan Ž. and Stojiljković, Dragoslava and Radojević, Miloš B. and Manić, Nebojša G.",
year = "2020",
abstract = "Thermo-analytical characterization of selected biomasses (agricultural waste and wood biomass feedstock) through the pyrolysis process was performed under dynamic conditions. Slow pyrolysis (carbonization) regime (with a heating rate below 50 °C min−1) was selected because it favours the residual solid (bio-carbon/bio-char) in the higher yields (change in the surface area of bio-char with pyrolysis conditions was dependent on the type of biomass feedstock). Comparison of results and discussions related to obtained percentage pyro char yields from thermo-chemical conversion of biomass feedstocks were generated from simultaneous thermal analysis (STA) (TGA-DTG-DTA apparatus). The analysis of gaseous products of pyrolysis was carried out using mass spectrometry (MS) technique. Releasing of the light gaseous compounds (mainly CO, CO2, CH4, and H2 non-condensable gases) was monitored simultaneously with TGA measurements. Discussion related to this issue was performed from the aspect of the syngas production, as well as the versatility of selected biomasses in the gasification process where the various gasifying agent may be in use. © Springer Nature Switzerland AG 2020.",
journal = "Lecture Notes in Networks and Systems",
booktitle = "Thermo-Analytical Characterization of Various Biomass Feedstocks for Assessments of Light Gaseous Compounds and Solid Residues",
volume = "90",
pages = "139-165",
doi = "10.1007/978-3-030-30853-7_9"
}
Pijović, M., Janković, B. Ž., Stojiljković, D., Radojević, M. B.,& Manić, N. G.. (2020). Thermo-Analytical Characterization of Various Biomass Feedstocks for Assessments of Light Gaseous Compounds and Solid Residues. in Lecture Notes in Networks and Systems, 90, 139-165.
https://doi.org/10.1007/978-3-030-30853-7_9
Pijović M, Janković BŽ, Stojiljković D, Radojević MB, Manić NG. Thermo-Analytical Characterization of Various Biomass Feedstocks for Assessments of Light Gaseous Compounds and Solid Residues. in Lecture Notes in Networks and Systems. 2020;90:139-165.
doi:10.1007/978-3-030-30853-7_9 .
Pijović, Milena, Janković, Bojan Ž., Stojiljković, Dragoslava, Radojević, Miloš B., Manić, Nebojša G., "Thermo-Analytical Characterization of Various Biomass Feedstocks for Assessments of Light Gaseous Compounds and Solid Residues" in Lecture Notes in Networks and Systems, 90 (2020):139-165,
https://doi.org/10.1007/978-3-030-30853-7_9 . .

Kinetic study of oxy-combustion of plane tree (Platanus orientalis) seeds (PTS) in O2/Ar atmosphere

Janković, Bojan Ž.; Manić, Nebojša G.; Dodevski, Vladimir; Radojević, Miloš; Stojiljković, Dragoslava

(2020)

TY  - JOUR
AU  - Janković, Bojan Ž.
AU  - Manić, Nebojša G.
AU  - Dodevski, Vladimir
AU  - Radojević, Miloš
AU  - Stojiljković, Dragoslava
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8906
AB  - The combustion reactivity of plane tree seeds biomass feedstock was studied using the thermogravimetry. The effects of atmosphere (O2/Ar) and different oxygen concentrations (O2/Ar = 20:80% and O2/Ar = 50:50%) on the combustion characteristics were investigated. When combustion atmosphere changes from O2/Ar = 50:50% to O2/Ar = 20:80% (reducing oxygen concentrations), the burnout temperature increases by 29.50 °C for tested biomass. Obtained results demonstrate the ease of ignition of investigated lignocellulosic material for O2/Ar = 50:50% ratio compared with O2/Ar = 20:80% ratio, and the actual trend is maintained under the condition when the heating rate increases. The reducing of oxygen concentration strongly influenced the amount of final residue products, particularly at higher heating rates (beyond 10 °C min−1). Kinetic analysis applied to investigated process shows strongly dependencies of both the apparent activation energy (E) and pre-exponential factor (logA) with conversion (α), especially in devolatilization and combustion of volatiles reaction stages. Large variation in E is attributed to existence of multiple parallel reactions. In order to solve this problem, the deconvolution technique that uses Fraser–Suzuki function was applied. It was shown that Fraser–Suzuki function fits successfully kinetic rate curves of entire combustion process, assuming the best selected nth-order reaction model.
T2  - Journal of Thermal Analysis and Calorimetry
T1  - Kinetic study of oxy-combustion of plane tree (Platanus orientalis) seeds (PTS) in O2/Ar atmosphere
VL  - 142
IS  - 2
SP  - 953
EP  - 976
DO  - 10.1007/s10973-019-09154-z
ER  - 
@article{
author = "Janković, Bojan Ž. and Manić, Nebojša G. and Dodevski, Vladimir and Radojević, Miloš and Stojiljković, Dragoslava",
year = "2020",
abstract = "The combustion reactivity of plane tree seeds biomass feedstock was studied using the thermogravimetry. The effects of atmosphere (O2/Ar) and different oxygen concentrations (O2/Ar = 20:80% and O2/Ar = 50:50%) on the combustion characteristics were investigated. When combustion atmosphere changes from O2/Ar = 50:50% to O2/Ar = 20:80% (reducing oxygen concentrations), the burnout temperature increases by 29.50 °C for tested biomass. Obtained results demonstrate the ease of ignition of investigated lignocellulosic material for O2/Ar = 50:50% ratio compared with O2/Ar = 20:80% ratio, and the actual trend is maintained under the condition when the heating rate increases. The reducing of oxygen concentration strongly influenced the amount of final residue products, particularly at higher heating rates (beyond 10 °C min−1). Kinetic analysis applied to investigated process shows strongly dependencies of both the apparent activation energy (E) and pre-exponential factor (logA) with conversion (α), especially in devolatilization and combustion of volatiles reaction stages. Large variation in E is attributed to existence of multiple parallel reactions. In order to solve this problem, the deconvolution technique that uses Fraser–Suzuki function was applied. It was shown that Fraser–Suzuki function fits successfully kinetic rate curves of entire combustion process, assuming the best selected nth-order reaction model.",
journal = "Journal of Thermal Analysis and Calorimetry",
title = "Kinetic study of oxy-combustion of plane tree (Platanus orientalis) seeds (PTS) in O2/Ar atmosphere",
volume = "142",
number = "2",
pages = "953-976",
doi = "10.1007/s10973-019-09154-z"
}
Janković, B. Ž., Manić, N. G., Dodevski, V., Radojević, M.,& Stojiljković, D.. (2020). Kinetic study of oxy-combustion of plane tree (Platanus orientalis) seeds (PTS) in O2/Ar atmosphere. in Journal of Thermal Analysis and Calorimetry, 142(2), 953-976.
https://doi.org/10.1007/s10973-019-09154-z
Janković BŽ, Manić NG, Dodevski V, Radojević M, Stojiljković D. Kinetic study of oxy-combustion of plane tree (Platanus orientalis) seeds (PTS) in O2/Ar atmosphere. in Journal of Thermal Analysis and Calorimetry. 2020;142(2):953-976.
doi:10.1007/s10973-019-09154-z .
Janković, Bojan Ž., Manić, Nebojša G., Dodevski, Vladimir, Radojević, Miloš, Stojiljković, Dragoslava, "Kinetic study of oxy-combustion of plane tree (Platanus orientalis) seeds (PTS) in O2/Ar atmosphere" in Journal of Thermal Analysis and Calorimetry, 142, no. 2 (2020):953-976,
https://doi.org/10.1007/s10973-019-09154-z . .

The gaseous products characterization of the pyrolysis process of various agricultural residues using TGA–DSC–MS techniques

Janković, Bojan Ž.; Manić, Nebojša G.; Stojiljković, Dragoslava

(2020)

TY  - JOUR
AU  - Janković, Bojan Ž.
AU  - Manić, Nebojša G.
AU  - Stojiljković, Dragoslava
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8899
AB  - Slow pyrolysis characteristics of agricultural residue feedstocks (corn brakes, wheat straw, and hazelnut shell) were investigated by simultaneous thermal analysis (STA–TG–DTG–DSC), coupled with mass spectrometry (MS). Thermal decomposition of agricultural residues was divided into three stages, corresponding to removal of water, devolatilization, and formation of bio-char. It was found that differences in thermal behavior of samples are due to differences in their composition. The MS results showed that H2, CH4, H2O, CO2 (C3H8), CO, and C2H6 were the main gaseous products released during pyrolysis. It was shown that hazelnut shells could be a good combustion fuel, since during its pyrolysis at high temperature, more gaseous products compared to other systems are very favored. For hazelnut shell pyrolysis, the CO2 can be used on the large scale for the production of CO-rich syngas. © 2019, Akadémiai Kiadó, Budapest, Hungary.
T2  - Journal of Thermal Analysis and Calorimetry
T1  - The gaseous products characterization of the pyrolysis process of various agricultural residues using TGA–DSC–MS techniques
VL  - 139
IS  - 5
SP  - 3091
EP  - 3106
DO  - 10.1007/s10973-019-08733-4
ER  - 
@article{
author = "Janković, Bojan Ž. and Manić, Nebojša G. and Stojiljković, Dragoslava",
year = "2020",
abstract = "Slow pyrolysis characteristics of agricultural residue feedstocks (corn brakes, wheat straw, and hazelnut shell) were investigated by simultaneous thermal analysis (STA–TG–DTG–DSC), coupled with mass spectrometry (MS). Thermal decomposition of agricultural residues was divided into three stages, corresponding to removal of water, devolatilization, and formation of bio-char. It was found that differences in thermal behavior of samples are due to differences in their composition. The MS results showed that H2, CH4, H2O, CO2 (C3H8), CO, and C2H6 were the main gaseous products released during pyrolysis. It was shown that hazelnut shells could be a good combustion fuel, since during its pyrolysis at high temperature, more gaseous products compared to other systems are very favored. For hazelnut shell pyrolysis, the CO2 can be used on the large scale for the production of CO-rich syngas. © 2019, Akadémiai Kiadó, Budapest, Hungary.",
journal = "Journal of Thermal Analysis and Calorimetry",
title = "The gaseous products characterization of the pyrolysis process of various agricultural residues using TGA–DSC–MS techniques",
volume = "139",
number = "5",
pages = "3091-3106",
doi = "10.1007/s10973-019-08733-4"
}
Janković, B. Ž., Manić, N. G.,& Stojiljković, D.. (2020). The gaseous products characterization of the pyrolysis process of various agricultural residues using TGA–DSC–MS techniques. in Journal of Thermal Analysis and Calorimetry, 139(5), 3091-3106.
https://doi.org/10.1007/s10973-019-08733-4
Janković BŽ, Manić NG, Stojiljković D. The gaseous products characterization of the pyrolysis process of various agricultural residues using TGA–DSC–MS techniques. in Journal of Thermal Analysis and Calorimetry. 2020;139(5):3091-3106.
doi:10.1007/s10973-019-08733-4 .
Janković, Bojan Ž., Manić, Nebojša G., Stojiljković, Dragoslava, "The gaseous products characterization of the pyrolysis process of various agricultural residues using TGA–DSC–MS techniques" in Journal of Thermal Analysis and Calorimetry, 139, no. 5 (2020):3091-3106,
https://doi.org/10.1007/s10973-019-08733-4 . .
7
7
8

Model-free and model-based kinetics of the combustion process of low rank coals with high ash contents using TGA-DTG-DTA-MS and FTIR techniques

Janković, Bojan Ž.; Manić, Nebojša G.; Radović, Ivana; Janković, Marija M.; Rajačić, Milica

(2019)

TY  - JOUR
AU  - Janković, Bojan Ž.
AU  - Manić, Nebojša G.
AU  - Radović, Ivana
AU  - Janković, Marija M.
AU  - Rajačić, Milica
PY  - 2019
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/8424
AB  - Thermal and kinetics behaviors of the low-rank coals from different annual periods (Kolubara (2015)/(2018) and TENT A (2015)/(2018)) during combustion process in air atmosphere, using simultaneous TGA-DTG-DTA-MS measurements were investigated. The FTIR spectroscopy was used to gain additional information on coals structures. Kolubara and TENT A coals from (2015)/(2018) annual periods show differences in reactivity, where the reason for this demeanor lies in differences in decomposition kinetics of these coals. The conclusions made on the basis of model-based analysis clearly indicate that differences in combustion reaction pathways (especially in transitions from primary to secondary combustion stages) arise from continual changes in physical structure of the coals. It was found that the mineral matter significantly influences on the reactivity of coal during combustion, where this is particularly pronounced for TENT A coal particles. © 2019 Elsevier B.V.
T2  - Thermochimica Acta
T1  - Model-free and model-based kinetics of the combustion process of low rank coals with high ash contents using TGA-DTG-DTA-MS and FTIR techniques
VL  - 679
SP  - 178337
DO  - 10.1016/j.tca.2019.178337
ER  - 
@article{
author = "Janković, Bojan Ž. and Manić, Nebojša G. and Radović, Ivana and Janković, Marija M. and Rajačić, Milica",
year = "2019",
abstract = "Thermal and kinetics behaviors of the low-rank coals from different annual periods (Kolubara (2015)/(2018) and TENT A (2015)/(2018)) during combustion process in air atmosphere, using simultaneous TGA-DTG-DTA-MS measurements were investigated. The FTIR spectroscopy was used to gain additional information on coals structures. Kolubara and TENT A coals from (2015)/(2018) annual periods show differences in reactivity, where the reason for this demeanor lies in differences in decomposition kinetics of these coals. The conclusions made on the basis of model-based analysis clearly indicate that differences in combustion reaction pathways (especially in transitions from primary to secondary combustion stages) arise from continual changes in physical structure of the coals. It was found that the mineral matter significantly influences on the reactivity of coal during combustion, where this is particularly pronounced for TENT A coal particles. © 2019 Elsevier B.V.",
journal = "Thermochimica Acta",
title = "Model-free and model-based kinetics of the combustion process of low rank coals with high ash contents using TGA-DTG-DTA-MS and FTIR techniques",
volume = "679",
pages = "178337",
doi = "10.1016/j.tca.2019.178337"
}
Janković, B. Ž., Manić, N. G., Radović, I., Janković, M. M.,& Rajačić, M.. (2019). Model-free and model-based kinetics of the combustion process of low rank coals with high ash contents using TGA-DTG-DTA-MS and FTIR techniques. in Thermochimica Acta, 679, 178337.
https://doi.org/10.1016/j.tca.2019.178337
Janković BŽ, Manić NG, Radović I, Janković MM, Rajačić M. Model-free and model-based kinetics of the combustion process of low rank coals with high ash contents using TGA-DTG-DTA-MS and FTIR techniques. in Thermochimica Acta. 2019;679:178337.
doi:10.1016/j.tca.2019.178337 .
Janković, Bojan Ž., Manić, Nebojša G., Radović, Ivana, Janković, Marija M., Rajačić, Milica, "Model-free and model-based kinetics of the combustion process of low rank coals with high ash contents using TGA-DTG-DTA-MS and FTIR techniques" in Thermochimica Acta, 679 (2019):178337,
https://doi.org/10.1016/j.tca.2019.178337 . .
9
7
8

Characterization analysis of Poplar fluff pyrolysis products. Multi-component kinetic study

Janković, Bojan Ž.; Manić, Nebojša G.; Dodevski, Vladimir; Popović, Jasmina G.; Rusmirović, Jelena D.; Tošić, Miloš S.

(2019)

TY  - JOUR
AU  - Janković, Bojan Ž.
AU  - Manić, Nebojša G.
AU  - Dodevski, Vladimir
AU  - Popović, Jasmina G.
AU  - Rusmirović, Jelena D.
AU  - Tošić, Miloš S.
PY  - 2019
UR  - https://linkinghub.elsevier.com/retrieve/pii/S0016236118317770
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/7925
AB  - This paper describes the pyrolysis of Poplar fluff (from Populus alba) using on-line apparatus, and carbonization process at 850 °C using the fixed bed reactor. Characteristics of pyrolysis products were examined. Elemental and chemical analyses were shown that Poplar fluff has higher energy content characterized by increased content of fibrous structure (particularly cellulose). Independent parallel reactions model very well describes devolatilization process. It was found that increased amount of extractives can significantly affect on increased release of light gaseous products, but declining hydrocarbons, mostly the alkanes. Liquid product is mainly composed of phenolics, aldehydes, acids, esters and ketones. The carbonization process produces the great abundance of polycyclic aromatic hydrocarbons (PAH's), where naphthalene is the most abundant. Mechanism for PAH's formation was suggested. This study represents the first step in a much wider and more comprehensive way in thermal conversion processes of this type of fuel. © 2018 Elsevier Ltd
T2  - Fuel
T1  - Characterization analysis of Poplar fluff pyrolysis products. Multi-component kinetic study
VL  - 238
SP  - 111
EP  - 128
DO  - 10.1016/j.fuel.2018.10.064
ER  - 
@article{
author = "Janković, Bojan Ž. and Manić, Nebojša G. and Dodevski, Vladimir and Popović, Jasmina G. and Rusmirović, Jelena D. and Tošić, Miloš S.",
year = "2019",
abstract = "This paper describes the pyrolysis of Poplar fluff (from Populus alba) using on-line apparatus, and carbonization process at 850 °C using the fixed bed reactor. Characteristics of pyrolysis products were examined. Elemental and chemical analyses were shown that Poplar fluff has higher energy content characterized by increased content of fibrous structure (particularly cellulose). Independent parallel reactions model very well describes devolatilization process. It was found that increased amount of extractives can significantly affect on increased release of light gaseous products, but declining hydrocarbons, mostly the alkanes. Liquid product is mainly composed of phenolics, aldehydes, acids, esters and ketones. The carbonization process produces the great abundance of polycyclic aromatic hydrocarbons (PAH's), where naphthalene is the most abundant. Mechanism for PAH's formation was suggested. This study represents the first step in a much wider and more comprehensive way in thermal conversion processes of this type of fuel. © 2018 Elsevier Ltd",
journal = "Fuel",
title = "Characterization analysis of Poplar fluff pyrolysis products. Multi-component kinetic study",
volume = "238",
pages = "111-128",
doi = "10.1016/j.fuel.2018.10.064"
}
Janković, B. Ž., Manić, N. G., Dodevski, V., Popović, J. G., Rusmirović, J. D.,& Tošić, M. S.. (2019). Characterization analysis of Poplar fluff pyrolysis products. Multi-component kinetic study. in Fuel, 238, 111-128.
https://doi.org/10.1016/j.fuel.2018.10.064
Janković BŽ, Manić NG, Dodevski V, Popović JG, Rusmirović JD, Tošić MS. Characterization analysis of Poplar fluff pyrolysis products. Multi-component kinetic study. in Fuel. 2019;238:111-128.
doi:10.1016/j.fuel.2018.10.064 .
Janković, Bojan Ž., Manić, Nebojša G., Dodevski, Vladimir, Popović, Jasmina G., Rusmirović, Jelena D., Tošić, Miloš S., "Characterization analysis of Poplar fluff pyrolysis products. Multi-component kinetic study" in Fuel, 238 (2019):111-128,
https://doi.org/10.1016/j.fuel.2018.10.064 . .
15
15
15

Dielectric properties and kinetic analysis of nonisothermal decomposition of ionic liquids derived from organic acid

Janković, Bojan Ž.; Manić, Nebojša G.; Buchner, Richard; Plowas-Korus, Iwona; Pereiro, Ana B.; Amado-Gonzalez, Eliseo

(2019)

TY  - JOUR
AU  - Janković, Bojan Ž.
AU  - Manić, Nebojša G.
AU  - Buchner, Richard
AU  - Plowas-Korus, Iwona
AU  - Pereiro, Ana B.
AU  - Amado-Gonzalez, Eliseo
PY  - 2019
UR  - https://linkinghub.elsevier.com/retrieve/pii/S0040603118309274
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/8011
AB  - Dielectric relaxation spectra of three representatives of the class of hydroxyethylammonium carboxylate protic ionic liquids (PILs), namely 2-hydroxyethylammonium formate [2-HEAF], 2-hydroxyethylammonium propionate [2-HEAP] and 2-hydroxyethylammonium butanoate [2-HEAB], were recorded over a wide frequency range (0.05 ≤ ν(GHz) ≤ 50) at 25 °C. The thermal decomposition kinetics of these ionic liquids derived from organic acids was studied by thermogravimetry (TG) using nonisothermal experiments. For the purpose of kinetic analysis, the thermal behavior of the samples was studied in the temperature interval from ambient temperature up to 420 °C at different heating rates (5, 10, 15 and 20 °C min−1). Isoconversional kinetic analysis was performed using Friedman's (FR) differential method and the integral Kissinger–Akahira–Sunose (KAS) method. The dependence of the apparent activation energy (E) on the conversion fraction (α) for the investigated decomposition processes was analyzed. It was found that the molecular structure of the involved anion significantly influences the dielectric properties of the studied PILs. It was also established that a change in the anion structure drastically affects the shape of the thermo-analytical curves. Among the considered PILs [2-HEAF] has the highest thermal stability. However, considering kinetic properties, certain deviations were observed and referred to hydrogen bonding development and steric impediment effects. © 2018 Elsevier B.V.
T2  - Thermochimica Acta
T1  - Dielectric properties and kinetic analysis of nonisothermal decomposition of ionic liquids derived from organic acid
VL  - 672
SP  - 43
EP  - 52
DO  - 10.1016/j.tca.2018.12.013
ER  - 
@article{
author = "Janković, Bojan Ž. and Manić, Nebojša G. and Buchner, Richard and Plowas-Korus, Iwona and Pereiro, Ana B. and Amado-Gonzalez, Eliseo",
year = "2019",
abstract = "Dielectric relaxation spectra of three representatives of the class of hydroxyethylammonium carboxylate protic ionic liquids (PILs), namely 2-hydroxyethylammonium formate [2-HEAF], 2-hydroxyethylammonium propionate [2-HEAP] and 2-hydroxyethylammonium butanoate [2-HEAB], were recorded over a wide frequency range (0.05 ≤ ν(GHz) ≤ 50) at 25 °C. The thermal decomposition kinetics of these ionic liquids derived from organic acids was studied by thermogravimetry (TG) using nonisothermal experiments. For the purpose of kinetic analysis, the thermal behavior of the samples was studied in the temperature interval from ambient temperature up to 420 °C at different heating rates (5, 10, 15 and 20 °C min−1). Isoconversional kinetic analysis was performed using Friedman's (FR) differential method and the integral Kissinger–Akahira–Sunose (KAS) method. The dependence of the apparent activation energy (E) on the conversion fraction (α) for the investigated decomposition processes was analyzed. It was found that the molecular structure of the involved anion significantly influences the dielectric properties of the studied PILs. It was also established that a change in the anion structure drastically affects the shape of the thermo-analytical curves. Among the considered PILs [2-HEAF] has the highest thermal stability. However, considering kinetic properties, certain deviations were observed and referred to hydrogen bonding development and steric impediment effects. © 2018 Elsevier B.V.",
journal = "Thermochimica Acta",
title = "Dielectric properties and kinetic analysis of nonisothermal decomposition of ionic liquids derived from organic acid",
volume = "672",
pages = "43-52",
doi = "10.1016/j.tca.2018.12.013"
}
Janković, B. Ž., Manić, N. G., Buchner, R., Plowas-Korus, I., Pereiro, A. B.,& Amado-Gonzalez, E.. (2019). Dielectric properties and kinetic analysis of nonisothermal decomposition of ionic liquids derived from organic acid. in Thermochimica Acta, 672, 43-52.
https://doi.org/10.1016/j.tca.2018.12.013
Janković BŽ, Manić NG, Buchner R, Plowas-Korus I, Pereiro AB, Amado-Gonzalez E. Dielectric properties and kinetic analysis of nonisothermal decomposition of ionic liquids derived from organic acid. in Thermochimica Acta. 2019;672:43-52.
doi:10.1016/j.tca.2018.12.013 .
Janković, Bojan Ž., Manić, Nebojša G., Buchner, Richard, Plowas-Korus, Iwona, Pereiro, Ana B., Amado-Gonzalez, Eliseo, "Dielectric properties and kinetic analysis of nonisothermal decomposition of ionic liquids derived from organic acid" in Thermochimica Acta, 672 (2019):43-52,
https://doi.org/10.1016/j.tca.2018.12.013 . .
1
3
3
3

Physico-chemical characterization of carbonized apricot kernel shell as precursor for activated carbon preparation in clean technology utilization

Janković, Bojan Ž.; Manić, Nebojša G.; Dodevski, Vladimir; Radović, Ivana; Pijović, Milena; Katnić, Đurica B.; Tasić, Gvozden S.

(2019)

TY  - JOUR
AU  - Janković, Bojan Ž.
AU  - Manić, Nebojša G.
AU  - Dodevski, Vladimir
AU  - Radović, Ivana
AU  - Pijović, Milena
AU  - Katnić, Đurica B.
AU  - Tasić, Gvozden S.
PY  - 2019
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/8393
AB  - This paper investigates the ability of waste apricot (Prunus armeniaca) kernel shells (AKS) bio-char prepared by single-step carbonization process at 850 °C (residence time of 1 h) for possible removal of toxic elements and organic micro-pollutants. The experiment that was performed as well as parameters used proved to be optimal for bio-char production as adsorbing medium, where last issue is validated by multiform material characterization techniques. It has been shown that the produced bio-char possess highly-porous morphology features, with large specific surface area (328.570 m2 g−1). The obtained product was characterized by various pore sizes (including super-micropores and mesopores with maximum pore size of 2.24 nm) structures. Preliminary results are indicated that obtained bio-char can shows increased affinity to possible adsorption of the small organic molecule contaminants upgraded by its physico-chemical properties. Cost estimation of AKS bio-char production substantiated its cost effectiveness and its good physical and chemical properties for future design in batch adsorption and regeneration tests. It was established that AKS produced bio-char was 2.5 times cheaper than the commercially available activated carbon. Bio-char exhibits promising removal performances for potential adsorption of heavy metal and organic micro-pollutants from wastewaters systems, as indicated by material textures and spectroscopy measurements. © 2019 Elsevier Ltd
T2  - Journal of Cleaner Production
T1  - Physico-chemical characterization of carbonized apricot kernel shell as precursor for activated carbon preparation in clean technology utilization
VL  - 236
SP  - 117614
DO  - 10.1016/j.jclepro.2019.117614
ER  - 
@article{
author = "Janković, Bojan Ž. and Manić, Nebojša G. and Dodevski, Vladimir and Radović, Ivana and Pijović, Milena and Katnić, Đurica B. and Tasić, Gvozden S.",
year = "2019",
abstract = "This paper investigates the ability of waste apricot (Prunus armeniaca) kernel shells (AKS) bio-char prepared by single-step carbonization process at 850 °C (residence time of 1 h) for possible removal of toxic elements and organic micro-pollutants. The experiment that was performed as well as parameters used proved to be optimal for bio-char production as adsorbing medium, where last issue is validated by multiform material characterization techniques. It has been shown that the produced bio-char possess highly-porous morphology features, with large specific surface area (328.570 m2 g−1). The obtained product was characterized by various pore sizes (including super-micropores and mesopores with maximum pore size of 2.24 nm) structures. Preliminary results are indicated that obtained bio-char can shows increased affinity to possible adsorption of the small organic molecule contaminants upgraded by its physico-chemical properties. Cost estimation of AKS bio-char production substantiated its cost effectiveness and its good physical and chemical properties for future design in batch adsorption and regeneration tests. It was established that AKS produced bio-char was 2.5 times cheaper than the commercially available activated carbon. Bio-char exhibits promising removal performances for potential adsorption of heavy metal and organic micro-pollutants from wastewaters systems, as indicated by material textures and spectroscopy measurements. © 2019 Elsevier Ltd",
journal = "Journal of Cleaner Production",
title = "Physico-chemical characterization of carbonized apricot kernel shell as precursor for activated carbon preparation in clean technology utilization",
volume = "236",
pages = "117614",
doi = "10.1016/j.jclepro.2019.117614"
}
Janković, B. Ž., Manić, N. G., Dodevski, V., Radović, I., Pijović, M., Katnić, Đ. B.,& Tasić, G. S.. (2019). Physico-chemical characterization of carbonized apricot kernel shell as precursor for activated carbon preparation in clean technology utilization. in Journal of Cleaner Production, 236, 117614.
https://doi.org/10.1016/j.jclepro.2019.117614
Janković BŽ, Manić NG, Dodevski V, Radović I, Pijović M, Katnić ĐB, Tasić GS. Physico-chemical characterization of carbonized apricot kernel shell as precursor for activated carbon preparation in clean technology utilization. in Journal of Cleaner Production. 2019;236:117614.
doi:10.1016/j.jclepro.2019.117614 .
Janković, Bojan Ž., Manić, Nebojša G., Dodevski, Vladimir, Radović, Ivana, Pijović, Milena, Katnić, Đurica B., Tasić, Gvozden S., "Physico-chemical characterization of carbonized apricot kernel shell as precursor for activated carbon preparation in clean technology utilization" in Journal of Cleaner Production, 236 (2019):117614,
https://doi.org/10.1016/j.jclepro.2019.117614 . .
16
8
12

Characterization analysis of raw and pyrolyzed plane tree seed (Platanus orientalis L.) samples for its application in carbon capture and storage (CCS) technology

Janković, Bojan Ž.; Dodevski, Vladimir; Stojmenović, Marija; Krstić, Sanja S.; Popović, Jasmina G.

(2018)

TY  - JOUR
AU  - Janković, Bojan Ž.
AU  - Dodevski, Vladimir
AU  - Stojmenović, Marija
AU  - Krstić, Sanja S.
AU  - Popović, Jasmina G.
PY  - 2018
UR  - http://link.springer.com/10.1007/s10973-018-7207-x
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/7779
AB  - Raw and pyrolyzed samples of the plane tree seeds (PTS) were tested by various advanced analytical techniques including simultaneous TG-DSC technique, FTIR analysis, X-ray diffraction (XRD) analysis, Raman spectroscopy analysis, GC-MS (gas chromatography-mass spectrometry) analysis and scanning electron microscope analysis, for its characterization procedure and the pre-treatments in possible application in CCS. Nondestructive analytical method (XRD) showed that raw material is typical for carbon-rich material, where was identified increase in interlayer spacing within graphite structure. The XRD results of pyrolyzed sample at 850 A degrees C showed a sudden loss in interlayer spacing. Spectroscopic analyses of pyrolyzed sample demonstrated the presence of typical aromatic structures found in amorphous carbon. Results indicate the high levels of the growth in basal planes of graphite structure in pyrolyzed sample. It was established that integrated reaction model parameters for pyrolysis of untreated PTS sample realistically describe active temperature period required for charcoal forming, under non-isothermal conditions. It was found that mechanical treatment of material results in increase in the number of chemical compounds. Micrograph showed the presence of variety of shapes and structures, where after pyrolysis, some dissipated pores were detected. One of these pores was partially blocked in some places, depending on the size of surface area. The results showed that the resulting char has very good features for further activation process, while the PTS would represent a good candidate in its application in the CCS.
T2  - Journal of Thermal Analysis and Calorimetry
T1  - Characterization analysis of raw and pyrolyzed plane tree seed (Platanus orientalis L.) samples for its application in carbon capture and storage (CCS) technology
VL  - 133
IS  - 1
SP  - 465
EP  - 480
DO  - 10.1007/s10973-018-7207-x
ER  - 
@article{
author = "Janković, Bojan Ž. and Dodevski, Vladimir and Stojmenović, Marija and Krstić, Sanja S. and Popović, Jasmina G.",
year = "2018",
abstract = "Raw and pyrolyzed samples of the plane tree seeds (PTS) were tested by various advanced analytical techniques including simultaneous TG-DSC technique, FTIR analysis, X-ray diffraction (XRD) analysis, Raman spectroscopy analysis, GC-MS (gas chromatography-mass spectrometry) analysis and scanning electron microscope analysis, for its characterization procedure and the pre-treatments in possible application in CCS. Nondestructive analytical method (XRD) showed that raw material is typical for carbon-rich material, where was identified increase in interlayer spacing within graphite structure. The XRD results of pyrolyzed sample at 850 A degrees C showed a sudden loss in interlayer spacing. Spectroscopic analyses of pyrolyzed sample demonstrated the presence of typical aromatic structures found in amorphous carbon. Results indicate the high levels of the growth in basal planes of graphite structure in pyrolyzed sample. It was established that integrated reaction model parameters for pyrolysis of untreated PTS sample realistically describe active temperature period required for charcoal forming, under non-isothermal conditions. It was found that mechanical treatment of material results in increase in the number of chemical compounds. Micrograph showed the presence of variety of shapes and structures, where after pyrolysis, some dissipated pores were detected. One of these pores was partially blocked in some places, depending on the size of surface area. The results showed that the resulting char has very good features for further activation process, while the PTS would represent a good candidate in its application in the CCS.",
journal = "Journal of Thermal Analysis and Calorimetry",
title = "Characterization analysis of raw and pyrolyzed plane tree seed (Platanus orientalis L.) samples for its application in carbon capture and storage (CCS) technology",
volume = "133",
number = "1",
pages = "465-480",
doi = "10.1007/s10973-018-7207-x"
}
Janković, B. Ž., Dodevski, V., Stojmenović, M., Krstić, S. S.,& Popović, J. G.. (2018). Characterization analysis of raw and pyrolyzed plane tree seed (Platanus orientalis L.) samples for its application in carbon capture and storage (CCS) technology. in Journal of Thermal Analysis and Calorimetry, 133(1), 465-480.
https://doi.org/10.1007/s10973-018-7207-x
Janković BŽ, Dodevski V, Stojmenović M, Krstić SS, Popović JG. Characterization analysis of raw and pyrolyzed plane tree seed (Platanus orientalis L.) samples for its application in carbon capture and storage (CCS) technology. in Journal of Thermal Analysis and Calorimetry. 2018;133(1):465-480.
doi:10.1007/s10973-018-7207-x .
Janković, Bojan Ž., Dodevski, Vladimir, Stojmenović, Marija, Krstić, Sanja S., Popović, Jasmina G., "Characterization analysis of raw and pyrolyzed plane tree seed (Platanus orientalis L.) samples for its application in carbon capture and storage (CCS) technology" in Journal of Thermal Analysis and Calorimetry, 133, no. 1 (2018):465-480,
https://doi.org/10.1007/s10973-018-7207-x . .
3
3
3

Thermal analysis testing and natural radioactivity characterization of kaolin as building material

Janković, Bojan Ž.; Janković, Marija M.; Marinović-Cincović, Milena; Todorović, Dragana; Sarap, Nataša

(2018)

TY  - JOUR
AU  - Janković, Bojan Ž.
AU  - Janković, Marija M.
AU  - Marinović-Cincović, Milena
AU  - Todorović, Dragana
AU  - Sarap, Nataša
PY  - 2018
UR  - http://link.springer.com/10.1007/s10973-018-7159-1
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/7777
AB  - Kaolins are used in a multiplicity of industries because of unique physical and chemical properties. Relationships between thermal and radioactivity properties are discussed in its application as a building material. Super-fine kaolin powder with particle sizes about 30 mu m was analyzed. Simultaneous TGA/DTA analysis was performed on powder samples at various heating rates in an argon atmosphere. Based on investigated thermal properties, it was concluded that dehydroxylation process can vary depending on the characteristics of starting material. The maximum degree of the dehydroxylation (D (T)) was obtained at the lowest rate of heating (D (T) = 60.79% for 10 A degrees C min(-1)). With an increase in the heating rate, decline in D (T) value was observed. Based on comprehensive testing, it was identified that the degree of dehydroxylation does not drop below 50%. It was concluded that appointed experimental conditions seem sufficient admissible for obtaining degree of dehydroxylation (D (T)) higher than 50%. In order to safe use of kaolin as a building material from the standpoint of radiological safety, content of natural radionuclides was determined by gamma spectrometry.
T2  - Journal of Thermal Analysis and Calorimetry
T1  - Thermal analysis testing and natural radioactivity characterization of kaolin as building material
VL  - 133
IS  - 1
SP  - 481
EP  - 487
DO  - 10.1007/s10973-018-7159-1
ER  - 
@article{
author = "Janković, Bojan Ž. and Janković, Marija M. and Marinović-Cincović, Milena and Todorović, Dragana and Sarap, Nataša",
year = "2018",
abstract = "Kaolins are used in a multiplicity of industries because of unique physical and chemical properties. Relationships between thermal and radioactivity properties are discussed in its application as a building material. Super-fine kaolin powder with particle sizes about 30 mu m was analyzed. Simultaneous TGA/DTA analysis was performed on powder samples at various heating rates in an argon atmosphere. Based on investigated thermal properties, it was concluded that dehydroxylation process can vary depending on the characteristics of starting material. The maximum degree of the dehydroxylation (D (T)) was obtained at the lowest rate of heating (D (T) = 60.79% for 10 A degrees C min(-1)). With an increase in the heating rate, decline in D (T) value was observed. Based on comprehensive testing, it was identified that the degree of dehydroxylation does not drop below 50%. It was concluded that appointed experimental conditions seem sufficient admissible for obtaining degree of dehydroxylation (D (T)) higher than 50%. In order to safe use of kaolin as a building material from the standpoint of radiological safety, content of natural radionuclides was determined by gamma spectrometry.",
journal = "Journal of Thermal Analysis and Calorimetry",
title = "Thermal analysis testing and natural radioactivity characterization of kaolin as building material",
volume = "133",
number = "1",
pages = "481-487",
doi = "10.1007/s10973-018-7159-1"
}
Janković, B. Ž., Janković, M. M., Marinović-Cincović, M., Todorović, D.,& Sarap, N.. (2018). Thermal analysis testing and natural radioactivity characterization of kaolin as building material. in Journal of Thermal Analysis and Calorimetry, 133(1), 481-487.
https://doi.org/10.1007/s10973-018-7159-1
Janković BŽ, Janković MM, Marinović-Cincović M, Todorović D, Sarap N. Thermal analysis testing and natural radioactivity characterization of kaolin as building material. in Journal of Thermal Analysis and Calorimetry. 2018;133(1):481-487.
doi:10.1007/s10973-018-7159-1 .
Janković, Bojan Ž., Janković, Marija M., Marinović-Cincović, Milena, Todorović, Dragana, Sarap, Nataša, "Thermal analysis testing and natural radioactivity characterization of kaolin as building material" in Journal of Thermal Analysis and Calorimetry, 133, no. 1 (2018):481-487,
https://doi.org/10.1007/s10973-018-7159-1 . .
2
1
2

A new data in the kinetic and thermodynamic analysis of non-isothermal decomposition of super-fine kaolin powder

Janković, Bojan Ž.; Marinović-Cincović, Milena; Janković, Marija M.

(2018)

TY  - JOUR
AU  - Janković, Bojan Ž.
AU  - Marinović-Cincović, Milena
AU  - Janković, Marija M.
PY  - 2018
UR  - http://linkinghub.elsevier.com/retrieve/pii/S0169131718300620
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/7636
AB  - Kinetic and thermodynamic analysis of non-isothermal decomposition of super-fine kaolin powder was examined. It was established that the decomposition process proceeds through liberation of adsorbed water, the loss of the water of hydration and dehydroxylation process, which produces highly disordered metakaolin. By applying the distributed reactivity approaches, it was found that dehydroxylation can be described with simultaneous two-parallel reactions model. By applying the Exner-Linert statistical method on estimated Eyring plots, the true isokinetic temperature was confirmed. The appearance of entropy - enthalpy compensation (EEC) showed the direct cause-and-effect relationship between these thermodynamic observables resulting by physically real factors such as the steric factors. It was shown that the phenomenon of true compensation effect arises from conformational (geometrical) changes, which occur during metakaolin formation.
T2  - Applied Clay Science
T1  - A new data in the kinetic and thermodynamic analysis of non-isothermal decomposition of super-fine kaolin powder
VL  - 156
SP  - 160
EP  - 168
DO  - 10.1016/j.clay.2018.02.008
ER  - 
@article{
author = "Janković, Bojan Ž. and Marinović-Cincović, Milena and Janković, Marija M.",
year = "2018",
abstract = "Kinetic and thermodynamic analysis of non-isothermal decomposition of super-fine kaolin powder was examined. It was established that the decomposition process proceeds through liberation of adsorbed water, the loss of the water of hydration and dehydroxylation process, which produces highly disordered metakaolin. By applying the distributed reactivity approaches, it was found that dehydroxylation can be described with simultaneous two-parallel reactions model. By applying the Exner-Linert statistical method on estimated Eyring plots, the true isokinetic temperature was confirmed. The appearance of entropy - enthalpy compensation (EEC) showed the direct cause-and-effect relationship between these thermodynamic observables resulting by physically real factors such as the steric factors. It was shown that the phenomenon of true compensation effect arises from conformational (geometrical) changes, which occur during metakaolin formation.",
journal = "Applied Clay Science",
title = "A new data in the kinetic and thermodynamic analysis of non-isothermal decomposition of super-fine kaolin powder",
volume = "156",
pages = "160-168",
doi = "10.1016/j.clay.2018.02.008"
}
Janković, B. Ž., Marinović-Cincović, M.,& Janković, M. M.. (2018). A new data in the kinetic and thermodynamic analysis of non-isothermal decomposition of super-fine kaolin powder. in Applied Clay Science, 156, 160-168.
https://doi.org/10.1016/j.clay.2018.02.008
Janković BŽ, Marinović-Cincović M, Janković MM. A new data in the kinetic and thermodynamic analysis of non-isothermal decomposition of super-fine kaolin powder. in Applied Clay Science. 2018;156:160-168.
doi:10.1016/j.clay.2018.02.008 .
Janković, Bojan Ž., Marinović-Cincović, Milena, Janković, Marija M., "A new data in the kinetic and thermodynamic analysis of non-isothermal decomposition of super-fine kaolin powder" in Applied Clay Science, 156 (2018):160-168,
https://doi.org/10.1016/j.clay.2018.02.008 . .
2
2
2

The combustion performances and thermo-oxidative degradation kinetics of plane tree seeds (PTS) (Platanus orientalis L.)

Janković, Bojan Ž.; Dodevski, Vladimir

(2018)

TY  - JOUR
AU  - Janković, Bojan Ž.
AU  - Dodevski, Vladimir
PY  - 2018
UR  - http://linkinghub.elsevier.com/retrieve/pii/S0360544218307655
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/7712
AB  - Combustion characteristics (reactivity and reactivity evaluation, ignition index (Di), burn-out index (Df), combustion performance index (S) and combustion stability index (RW)) and thermo-oxidative degradation kinetics of plane tree seeds (PTS) were investigated. Oxidation analysis shows that PTS exhibits stable and high combustion activity, where comparison of ignition and burn-out index values showed that a more developed pore structures of PTS particles exist, and higher volatile matter content is present. Results are also confirmed through derived experience constant value (ζ) and which were compared with other energy sources. It was established that different maximal reaction rate values at various heating rates point out the PTS complex nature, which is stimulated with carbon oxidation reactions and volatile matter release. Kinetic analysis has shown that process can be divided into two stages: devolatilization stage (280–380 °C) and char combustion stage (380–600 °C). In order to obtain a stable solid product, rich in carbon, the PTS shows good performance but with application of high-temperature processing conditions.
T2  - Energy
T1  - The combustion performances and thermo-oxidative degradation kinetics of plane tree seeds (PTS) (Platanus orientalis L.)
VL  - 154
SP  - 308
EP  - 318
DO  - 10.1016/j.energy.2018.04.149
ER  - 
@article{
author = "Janković, Bojan Ž. and Dodevski, Vladimir",
year = "2018",
abstract = "Combustion characteristics (reactivity and reactivity evaluation, ignition index (Di), burn-out index (Df), combustion performance index (S) and combustion stability index (RW)) and thermo-oxidative degradation kinetics of plane tree seeds (PTS) were investigated. Oxidation analysis shows that PTS exhibits stable and high combustion activity, where comparison of ignition and burn-out index values showed that a more developed pore structures of PTS particles exist, and higher volatile matter content is present. Results are also confirmed through derived experience constant value (ζ) and which were compared with other energy sources. It was established that different maximal reaction rate values at various heating rates point out the PTS complex nature, which is stimulated with carbon oxidation reactions and volatile matter release. Kinetic analysis has shown that process can be divided into two stages: devolatilization stage (280–380 °C) and char combustion stage (380–600 °C). In order to obtain a stable solid product, rich in carbon, the PTS shows good performance but with application of high-temperature processing conditions.",
journal = "Energy",
title = "The combustion performances and thermo-oxidative degradation kinetics of plane tree seeds (PTS) (Platanus orientalis L.)",
volume = "154",
pages = "308-318",
doi = "10.1016/j.energy.2018.04.149"
}
Janković, B. Ž.,& Dodevski, V.. (2018). The combustion performances and thermo-oxidative degradation kinetics of plane tree seeds (PTS) (Platanus orientalis L.). in Energy, 154, 308-318.
https://doi.org/10.1016/j.energy.2018.04.149
Janković BŽ, Dodevski V. The combustion performances and thermo-oxidative degradation kinetics of plane tree seeds (PTS) (Platanus orientalis L.). in Energy. 2018;154:308-318.
doi:10.1016/j.energy.2018.04.149 .
Janković, Bojan Ž., Dodevski, Vladimir, "The combustion performances and thermo-oxidative degradation kinetics of plane tree seeds (PTS) (Platanus orientalis L.)" in Energy, 154 (2018):308-318,
https://doi.org/10.1016/j.energy.2018.04.149 . .
5
5
5

Comparative pyrolysis kinetics of various biomasses based on model-free and DAEM approaches improved with numerical optimization procedure

Radojević, Miloš B.; Janković, Bojan Ž.; Jovanović, Vladimir V.; Stojiljković, Dragoslava; Manić, Nebojša G.

(2018)

TY  - JOUR
AU  - Radojević, Miloš B.
AU  - Janković, Bojan Ž.
AU  - Jovanović, Vladimir V.
AU  - Stojiljković, Dragoslava
AU  - Manić, Nebojša G.
PY  - 2018
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/7938
AB  - The pyrolysis process of various types of biomass (agricultural and wood by-products) in non-isothermal conditions using simultaneous thermal analyses (STA) was investigated. Devolatilization kinetics was implemented through combined application of model-free methods and DAEM (distributed activation energy model) using Gaussian distribution functions of activation energies. Results obtained were used in the curve prediction of the rate of mass loss against temperature at various heating rates by numerical optimization. The possible calculation of biomass samples behavior under pyrolytic conditions as the summation of their pseudo-components, hemicelluloses, cellulose, and lignin is also explored. The differences between experimental and calculated data are less than 3.20% offering a quality test of applicability of proposed model on the kinetic studies of a wide range of biomass samples. It seems that the most physically realistic model is the decomposition of biomass in three reactions, depending on the composition of the biomass regarding hemicelluloses, cellulose, and lignin. Kinetic model applied here may serve as a starting point to build more complex models capable of describing the thermal behavior of plant materials during thermochemical processing.
T2  - PLOS One
T1  - Comparative pyrolysis kinetics of various biomasses based on model-free and DAEM approaches improved with numerical optimization procedure
VL  - 13
IS  - 10
SP  - e0206657
DO  - 10.1371/journal.pone.0206657
ER  - 
@article{
author = "Radojević, Miloš B. and Janković, Bojan Ž. and Jovanović, Vladimir V. and Stojiljković, Dragoslava and Manić, Nebojša G.",
year = "2018",
abstract = "The pyrolysis process of various types of biomass (agricultural and wood by-products) in non-isothermal conditions using simultaneous thermal analyses (STA) was investigated. Devolatilization kinetics was implemented through combined application of model-free methods and DAEM (distributed activation energy model) using Gaussian distribution functions of activation energies. Results obtained were used in the curve prediction of the rate of mass loss against temperature at various heating rates by numerical optimization. The possible calculation of biomass samples behavior under pyrolytic conditions as the summation of their pseudo-components, hemicelluloses, cellulose, and lignin is also explored. The differences between experimental and calculated data are less than 3.20% offering a quality test of applicability of proposed model on the kinetic studies of a wide range of biomass samples. It seems that the most physically realistic model is the decomposition of biomass in three reactions, depending on the composition of the biomass regarding hemicelluloses, cellulose, and lignin. Kinetic model applied here may serve as a starting point to build more complex models capable of describing the thermal behavior of plant materials during thermochemical processing.",
journal = "PLOS One",
title = "Comparative pyrolysis kinetics of various biomasses based on model-free and DAEM approaches improved with numerical optimization procedure",
volume = "13",
number = "10",
pages = "e0206657",
doi = "10.1371/journal.pone.0206657"
}
Radojević, M. B., Janković, B. Ž., Jovanović, V. V., Stojiljković, D.,& Manić, N. G.. (2018). Comparative pyrolysis kinetics of various biomasses based on model-free and DAEM approaches improved with numerical optimization procedure. in PLOS One, 13(10), e0206657.
https://doi.org/10.1371/journal.pone.0206657
Radojević MB, Janković BŽ, Jovanović VV, Stojiljković D, Manić NG. Comparative pyrolysis kinetics of various biomasses based on model-free and DAEM approaches improved with numerical optimization procedure. in PLOS One. 2018;13(10):e0206657.
doi:10.1371/journal.pone.0206657 .
Radojević, Miloš B., Janković, Bojan Ž., Jovanović, Vladimir V., Stojiljković, Dragoslava, Manić, Nebojša G., "Comparative pyrolysis kinetics of various biomasses based on model-free and DAEM approaches improved with numerical optimization procedure" in PLOS One, 13, no. 10 (2018):e0206657,
https://doi.org/10.1371/journal.pone.0206657 . .
23
19
21

Influence of various concentrations of 24-epibrassinolide on the kinetic parameters during isothermal dehydration of two maize hybrids

Waisi, Hadi; Janković, Bojan Ž.; Nikolić, Bogdan R.; Dragičević, Vesna; Panić, I.; Tosti, Tomislav B.; Trifković, Jelena Đ.

(2018)

TY  - JOUR
AU  - Waisi, Hadi
AU  - Janković, Bojan Ž.
AU  - Nikolić, Bogdan R.
AU  - Dragičević, Vesna
AU  - Panić, I.
AU  - Tosti, Tomislav B.
AU  - Trifković, Jelena Đ.
PY  - 2018
UR  - https://linkinghub.elsevier.com/retrieve/pii/S0254629918300814
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/7863
AB  - 24-epibrassinolide (24-EBL) is plant steroid hormone that can regulate several physiological effects in plants, including promotion of cell growth and induction of heat stress tolerance. The purpose of this work is to investigate the influence of various concentrations of 24-EBL on the dehydration mechanism of seedlings of two maize hybrids (ZP434 and ZP704). Control and treated samples were subjected to isothermal conditions for dehydration processes. The effects of carbohydrates and mineral contents on the possible changes in the dehydration mechanism (from kinetics standpoint) were investigated. Comparing control samples to samples treated with 24-EBL, it was found that different dehydration mechanisms exist. The differences arise from the influence of 24-EBL, that causes a significant increase of phosphorus values for ZP704, whilst the reverse was identified for ZP434. It was assumed that the plumule sensitivity to dehydration stress originates from the interaction of water with primary amino groups as cations in polyamines, for lower concentrations of 24-EBL. It was found that the temperature variation (105–130 °C) leads to situations where trehalose does not arrive fast enough to “replace the water” because its handicap to binds (by hydrogen bonds) to biomolecules instead of water. It was found that 24-EBL cause changes of carbohydrates properties, which are important for the defense mechanism from environmental stresses. © 2018 SAAB
T2  - South African Journal of Botany
T1  - Influence of various concentrations of 24-epibrassinolide on the kinetic parameters during isothermal dehydration of two maize hybrids
VL  - 119
SP  - 69
EP  - 79
DO  - 10.1016/j.sajb.2018.08.006
ER  - 
@article{
author = "Waisi, Hadi and Janković, Bojan Ž. and Nikolić, Bogdan R. and Dragičević, Vesna and Panić, I. and Tosti, Tomislav B. and Trifković, Jelena Đ.",
year = "2018",
abstract = "24-epibrassinolide (24-EBL) is plant steroid hormone that can regulate several physiological effects in plants, including promotion of cell growth and induction of heat stress tolerance. The purpose of this work is to investigate the influence of various concentrations of 24-EBL on the dehydration mechanism of seedlings of two maize hybrids (ZP434 and ZP704). Control and treated samples were subjected to isothermal conditions for dehydration processes. The effects of carbohydrates and mineral contents on the possible changes in the dehydration mechanism (from kinetics standpoint) were investigated. Comparing control samples to samples treated with 24-EBL, it was found that different dehydration mechanisms exist. The differences arise from the influence of 24-EBL, that causes a significant increase of phosphorus values for ZP704, whilst the reverse was identified for ZP434. It was assumed that the plumule sensitivity to dehydration stress originates from the interaction of water with primary amino groups as cations in polyamines, for lower concentrations of 24-EBL. It was found that the temperature variation (105–130 °C) leads to situations where trehalose does not arrive fast enough to “replace the water” because its handicap to binds (by hydrogen bonds) to biomolecules instead of water. It was found that 24-EBL cause changes of carbohydrates properties, which are important for the defense mechanism from environmental stresses. © 2018 SAAB",
journal = "South African Journal of Botany",
title = "Influence of various concentrations of 24-epibrassinolide on the kinetic parameters during isothermal dehydration of two maize hybrids",
volume = "119",
pages = "69-79",
doi = "10.1016/j.sajb.2018.08.006"
}
Waisi, H., Janković, B. Ž., Nikolić, B. R., Dragičević, V., Panić, I., Tosti, T. B.,& Trifković, J. Đ.. (2018). Influence of various concentrations of 24-epibrassinolide on the kinetic parameters during isothermal dehydration of two maize hybrids. in South African Journal of Botany, 119, 69-79.
https://doi.org/10.1016/j.sajb.2018.08.006
Waisi H, Janković BŽ, Nikolić BR, Dragičević V, Panić I, Tosti TB, Trifković JĐ. Influence of various concentrations of 24-epibrassinolide on the kinetic parameters during isothermal dehydration of two maize hybrids. in South African Journal of Botany. 2018;119:69-79.
doi:10.1016/j.sajb.2018.08.006 .
Waisi, Hadi, Janković, Bojan Ž., Nikolić, Bogdan R., Dragičević, Vesna, Panić, I., Tosti, Tomislav B., Trifković, Jelena Đ., "Influence of various concentrations of 24-epibrassinolide on the kinetic parameters during isothermal dehydration of two maize hybrids" in South African Journal of Botany, 119 (2018):69-79,
https://doi.org/10.1016/j.sajb.2018.08.006 . .
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Plane tree seed biomass used for preparation of activated carbons (AC) derived from pyrolysis. Modeling the activation process

Dodevski, Vladimir; Janković, Bojan Ž.; Stojmenović, Marija; Krstić, Sanja S.; Popović, Jasmina G.; Pagnacco, Maja C.; Popović, Maja; Pašalić, Snežana

(2017)

TY  - JOUR
AU  - Dodevski, Vladimir
AU  - Janković, Bojan Ž.
AU  - Stojmenović, Marija
AU  - Krstić, Sanja S.
AU  - Popović, Jasmina G.
AU  - Pagnacco, Maja C.
AU  - Popović, Maja
AU  - Pašalić, Snežana
PY  - 2017
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/1624
AB  - In this work, plane tree seed-based activated carbons (AC) were used for possible application in carbon dioxide capture and storage (CCS) technology. After carbonization process at 850 degrees C, resulting preliminary ACs were activated at various temperatures. The high levels of the growth in basal planes of graphite structure in carbonized sample were detected. Also, it was found that the samples activated at 750 and 850 degrees C have a lower graphitization degree and contained substantially disordered sections and defects, which are characteristic of typical amorphous porous carbons. Process modeling has shown that the CO2 sorption can be described by multi-parametric continuous distributed reactivity model. Analysis showed the occurrence of gas reduction process, involving gibberellic acid and coenzymes which can produce the methane gas. The highly ordered arrangement of the gas molecules on the carbons was assumed. (C) 2017 Elsevier B.V. All rights reserved.
T2  - Colloids and Surfaces. A: Physicochemical and Engineering Aspects
T1  - Plane tree seed biomass used for preparation of activated carbons (AC) derived from pyrolysis. Modeling the activation process
VL  - 522
SP  - 83
EP  - 96
DO  - 10.1016/j.colsurfa.2017.03.003
ER  - 
@article{
author = "Dodevski, Vladimir and Janković, Bojan Ž. and Stojmenović, Marija and Krstić, Sanja S. and Popović, Jasmina G. and Pagnacco, Maja C. and Popović, Maja and Pašalić, Snežana",
year = "2017",
abstract = "In this work, plane tree seed-based activated carbons (AC) were used for possible application in carbon dioxide capture and storage (CCS) technology. After carbonization process at 850 degrees C, resulting preliminary ACs were activated at various temperatures. The high levels of the growth in basal planes of graphite structure in carbonized sample were detected. Also, it was found that the samples activated at 750 and 850 degrees C have a lower graphitization degree and contained substantially disordered sections and defects, which are characteristic of typical amorphous porous carbons. Process modeling has shown that the CO2 sorption can be described by multi-parametric continuous distributed reactivity model. Analysis showed the occurrence of gas reduction process, involving gibberellic acid and coenzymes which can produce the methane gas. The highly ordered arrangement of the gas molecules on the carbons was assumed. (C) 2017 Elsevier B.V. All rights reserved.",
journal = "Colloids and Surfaces. A: Physicochemical and Engineering Aspects",
title = "Plane tree seed biomass used for preparation of activated carbons (AC) derived from pyrolysis. Modeling the activation process",
volume = "522",
pages = "83-96",
doi = "10.1016/j.colsurfa.2017.03.003"
}
Dodevski, V., Janković, B. Ž., Stojmenović, M., Krstić, S. S., Popović, J. G., Pagnacco, M. C., Popović, M.,& Pašalić, S.. (2017). Plane tree seed biomass used for preparation of activated carbons (AC) derived from pyrolysis. Modeling the activation process. in Colloids and Surfaces. A: Physicochemical and Engineering Aspects, 522, 83-96.
https://doi.org/10.1016/j.colsurfa.2017.03.003
Dodevski V, Janković BŽ, Stojmenović M, Krstić SS, Popović JG, Pagnacco MC, Popović M, Pašalić S. Plane tree seed biomass used for preparation of activated carbons (AC) derived from pyrolysis. Modeling the activation process. in Colloids and Surfaces. A: Physicochemical and Engineering Aspects. 2017;522:83-96.
doi:10.1016/j.colsurfa.2017.03.003 .
Dodevski, Vladimir, Janković, Bojan Ž., Stojmenović, Marija, Krstić, Sanja S., Popović, Jasmina G., Pagnacco, Maja C., Popović, Maja, Pašalić, Snežana, "Plane tree seed biomass used for preparation of activated carbons (AC) derived from pyrolysis. Modeling the activation process" in Colloids and Surfaces. A: Physicochemical and Engineering Aspects, 522 (2017):83-96,
https://doi.org/10.1016/j.colsurfa.2017.03.003 . .
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