TY  - CONF
AU  - Manić, Nebojš
AU  - Janković, Bojan
AU  - Veljković, Filip
AU  - Pijović, Milena
PY  - 2023
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7241
AB  - This paper considers possible uses of fruit-based waste for the production of valuable chemicals
and biofuel precursors through recycling by thermochemical conversion. Slow pyrolysis of goji
berry mesocarp as sugar-riched feedstock was investigated using simultaneous thermal analysis
measurements in non-isothermal conditions. This work announced that pyrolysis of goji berry
mesocarp represents a promising route to obtaining an important key platform chemical - 5-
hydroxymethylfurfural (5-HMF). To establish the process mechanism, two kinetic approaches
were used for kinetic parameters determination: first, Friedman’s and Vyazovkin’s model-free
(inverse) methods supported by numerical optimization of the process, and second, the modelbased
(direct) method. Model-free results showed a complex evolution of activation energy with
conversion, indicating a multi-step mechanism. It was found that autocatalytic dehydration of
fructose (in the presence of Lewis acids) is responsible for the production of 5-HMF at a low
heating rate (5.0 K/min) with a maximum 5-HMF theoretical yield of 63.20 %. Higher heating
rates (10.0 K/min and 15.0 K/min) trigger the fructose autogenesis behavior which opens the
transferability channel to glucose (substrate) engagement for 5-HMF theoretical high yield
production. It was revealed that differences between kinetic parameters are a consequence of the
change in the mechanism of glycosidic bond cleavage. The validity of the proposed reaction
mechanism scheme and accuracy of kinetic parameters was confirmed by modulated dynamic
predictions.
PB  - SDEWES - International Centre for Sustainable Development of Energy, Water and Environment Systems
PB  - Faculty of Mechanical Engineering and Naval Architecture, Zagreb
C3  - Book of Abstracts 18th Conference on Sustainable Development of Energy, Water and Environment Systems
T1  - The kinetic study of fruit processing waste pyrolysis for efficient production of  platform chemicals
IS  - SDEWES2023.0509
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7241
ER  - 

@conference{
author = "Manić, Nebojš and Janković, Bojan and Veljković, Filip and Pijović, Milena",
year = "2023",
abstract = "This paper considers possible uses of fruit-based waste for the production of valuable chemicals
and biofuel precursors through recycling by thermochemical conversion. Slow pyrolysis of goji
berry mesocarp as sugar-riched feedstock was investigated using simultaneous thermal analysis
measurements in non-isothermal conditions. This work announced that pyrolysis of goji berry
mesocarp represents a promising route to obtaining an important key platform chemical - 5-
hydroxymethylfurfural (5-HMF). To establish the process mechanism, two kinetic approaches
were used for kinetic parameters determination: first, Friedman’s and Vyazovkin’s model-free
(inverse) methods supported by numerical optimization of the process, and second, the modelbased
(direct) method. Model-free results showed a complex evolution of activation energy with
conversion, indicating a multi-step mechanism. It was found that autocatalytic dehydration of
fructose (in the presence of Lewis acids) is responsible for the production of 5-HMF at a low
heating rate (5.0 K/min) with a maximum 5-HMF theoretical yield of 63.20 %. Higher heating
rates (10.0 K/min and 15.0 K/min) trigger the fructose autogenesis behavior which opens the
transferability channel to glucose (substrate) engagement for 5-HMF theoretical high yield
production. It was revealed that differences between kinetic parameters are a consequence of the
change in the mechanism of glycosidic bond cleavage. The validity of the proposed reaction
mechanism scheme and accuracy of kinetic parameters was confirmed by modulated dynamic
predictions.",
publisher = "SDEWES - International Centre for Sustainable Development of Energy, Water and Environment Systems, Faculty of Mechanical Engineering and Naval Architecture, Zagreb",
journal = "Book of Abstracts 18th Conference on Sustainable Development of Energy, Water and Environment Systems",
title = "The kinetic study of fruit processing waste pyrolysis for efficient production of  platform chemicals",
number = "SDEWES2023.0509",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7241"
}

Manić, N., Janković, B., Veljković, F.,& Pijović, M.. (2023). The kinetic study of fruit processing waste pyrolysis for efficient production of  platform chemicals. in Book of Abstracts 18th Conference on Sustainable Development of Energy, Water and Environment Systems
SDEWES - International Centre for Sustainable Development of Energy, Water and Environment Systems.(SDEWES2023.0509).
https://hdl.handle.net/21.15107/rcub_machinery_7241

Manić N, Janković B, Veljković F, Pijović M. The kinetic study of fruit processing waste pyrolysis for efficient production of  platform chemicals. in Book of Abstracts 18th Conference on Sustainable Development of Energy, Water and Environment Systems. 2023;(SDEWES2023.0509).
https://hdl.handle.net/21.15107/rcub_machinery_7241 .

Manić, Nebojš, Janković, Bojan, Veljković, Filip, Pijović, Milena, "The kinetic study of fruit processing waste pyrolysis for efficient production of  platform chemicals" in Book of Abstracts 18th Conference on Sustainable Development of Energy, Water and Environment Systems, no. SDEWES2023.0509 (2023),
https://hdl.handle.net/21.15107/rcub_machinery_7241 .

TY  - CONF
AU  - Veljković, Filip
AU  - Janković, Bojan
AU  - Manić, Nebojša
AU  - Radojević, Miloš
AU  - Stojiljković, Milovan
AU  - Stajčić, Ivana
AU  - Ćurčić, Milica
AU  - Veličković, Suzana
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7245
AB  - One of the goals that mankind has set for 2050 is decarbonization in the energy sector. For that
reason, the use of hydrogen as an alternative fuel looks like a possible solution. However, the conventional
hydrogen production process (electrolysis) now indirectly accounts for more than 2% of
total global CO2 emissions. One of the scenarios to reaching set targets involves the decarbonization
of hydrogen production, resulting in green hydrogen. The one of the pathways for production of green
hydrogen is feasible within the gasification of lignocellulosic materials (biomass feedstock) into syngas.
However, different feedstock parameters have an impact on the thermochemical conversion process
i.e. syngas yield and composition. This paper presents the novel semi-quantitative analysis of
fundamental experimental data obtained by thermogravimetry and mass spectrometry. According to
the proposed methodology on the lab-scale level is possible to evaluate the feedstock quality for identification
of syngas yield and composition, with special attention to the hydrogen content in the syngas.
The experimental results for two biomass samples were presented and based on performed semiquantitative
analysis the evaluating of the possibilities for using considered feedstocks for green hydrogen
production was done. Further discussions and comparisons with literature data were also
presented.
PB  - Union of Mechanical and Electrotechnical Engineers and Technicians of Serbia (SMEITS) Society for Renewable Electrical Power Sources
C3  - Proceedings of 9th International Conference on Renewable Electrical Power Sources
T1  - A SEMI-QUANTITATIVE ANALYSIS FOR EVALUATING THE SUSTAINABLE GREEN HYDROGEN PRODUCTION BY BIOMASS GASIFICATION
T1  - SEMI-KVANTITATIVNA ANALIZA ZA PROCENU ODRŽIVE PROIZVODNJE ZELENOG VODONIKA GASIFIKACIJOM BIOMASE
EP  - 280
SP  - 273
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7245
ER  - 

@conference{
author = "Veljković, Filip and Janković, Bojan and Manić, Nebojša and Radojević, Miloš and Stojiljković, Milovan and Stajčić, Ivana and Ćurčić, Milica and Veličković, Suzana",
year = "2021",
abstract = "One of the goals that mankind has set for 2050 is decarbonization in the energy sector. For that
reason, the use of hydrogen as an alternative fuel looks like a possible solution. However, the conventional
hydrogen production process (electrolysis) now indirectly accounts for more than 2% of
total global CO2 emissions. One of the scenarios to reaching set targets involves the decarbonization
of hydrogen production, resulting in green hydrogen. The one of the pathways for production of green
hydrogen is feasible within the gasification of lignocellulosic materials (biomass feedstock) into syngas.
However, different feedstock parameters have an impact on the thermochemical conversion process
i.e. syngas yield and composition. This paper presents the novel semi-quantitative analysis of
fundamental experimental data obtained by thermogravimetry and mass spectrometry. According to
the proposed methodology on the lab-scale level is possible to evaluate the feedstock quality for identification
of syngas yield and composition, with special attention to the hydrogen content in the syngas.
The experimental results for two biomass samples were presented and based on performed semiquantitative
analysis the evaluating of the possibilities for using considered feedstocks for green hydrogen
production was done. Further discussions and comparisons with literature data were also
presented.",
publisher = "Union of Mechanical and Electrotechnical Engineers and Technicians of Serbia (SMEITS) Society for Renewable Electrical Power Sources",
journal = "Proceedings of 9th International Conference on Renewable Electrical Power Sources",
title = "A SEMI-QUANTITATIVE ANALYSIS FOR EVALUATING THE SUSTAINABLE GREEN HYDROGEN PRODUCTION BY BIOMASS GASIFICATION, SEMI-KVANTITATIVNA ANALIZA ZA PROCENU ODRŽIVE PROIZVODNJE ZELENOG VODONIKA GASIFIKACIJOM BIOMASE",
pages = "280-273",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7245"
}

Veljković, F., Janković, B., Manić, N., Radojević, M., Stojiljković, M., Stajčić, I., Ćurčić, M.,& Veličković, S.. (2021). A SEMI-QUANTITATIVE ANALYSIS FOR EVALUATING THE SUSTAINABLE GREEN HYDROGEN PRODUCTION BY BIOMASS GASIFICATION. in Proceedings of 9th International Conference on Renewable Electrical Power Sources
Union of Mechanical and Electrotechnical Engineers and Technicians of Serbia (SMEITS) Society for Renewable Electrical Power Sources., 273-280.
https://hdl.handle.net/21.15107/rcub_machinery_7245

Veljković F, Janković B, Manić N, Radojević M, Stojiljković M, Stajčić I, Ćurčić M, Veličković S. A SEMI-QUANTITATIVE ANALYSIS FOR EVALUATING THE SUSTAINABLE GREEN HYDROGEN PRODUCTION BY BIOMASS GASIFICATION. in Proceedings of 9th International Conference on Renewable Electrical Power Sources. 2021;:273-280.
https://hdl.handle.net/21.15107/rcub_machinery_7245 .

Veljković, Filip, Janković, Bojan, Manić, Nebojša, Radojević, Miloš, Stojiljković, Milovan, Stajčić, Ivana, Ćurčić, Milica, Veličković, Suzana, "A SEMI-QUANTITATIVE ANALYSIS FOR EVALUATING THE SUSTAINABLE GREEN HYDROGEN PRODUCTION BY BIOMASS GASIFICATION" in Proceedings of 9th International Conference on Renewable Electrical Power Sources (2021):273-280,
https://hdl.handle.net/21.15107/rcub_machinery_7245 .