TY  - JOUR
AU  - Buha-Marković, Jovana
AU  - Marinković, Ana
AU  - Savić, Jasmina
AU  - Krstić, Aleksandar
AU  - Savić, Andrija
AU  - Ristic, Mirjana
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12283
AB  - Lignite and coal waste used as feed fuels in thermal power plants (TPPs) and semi-industrial fluidized bed boiler (FBB), as well as their representative fly ashes (FAs), were examined. Fly ashes were compared employing anions and cations content in correspondent water extracts, trace elements and polycyclic aromatic hydrocarbon concentrations, as well as health risk assessments of substances known to be of concern for public health. Fluoride and sulfate contents in water extracted FAs are far below the legislation limits for waste, classifying all investigated FAs as non-hazardous. Among investigated trace elements, Cd content is the lowest, while Mn content is the highest. The highest enrichment ratios are noticed for As, Pb, Hg, Cu, V and Cr. The results indicate that total PAHs content is elevated in FA from the combustion of coal waste (AFB), with fluoranthene prevailing. The cancer risk of As and the non-cancer risk of As and Ni in some FAs surpass their respective permissible limits. The incremental lifetime cancer risk of an adult population indicates a potential PAHs risk in AFB, whereas all other fly ashes are within safe limits.
AB  - У овом раду, испитивана су горива (лигнит и отпадни угаљ) која се користе у термоелектранама и полуиндустријском постројењу са флуидизованим слојем, као и летећи пепели добијени њиховим сагоревањем. Летећи пепели су упоређени на основу: садржаја анјона и катјона у њиховим воденим екстрактима, концентрације елемената у траговима и полицикличних ароматичних угљоводоника (PAH), као и процене здравственог ризика који потиче од претходно поменутих потенцијално опасних супстанци. Садржај флуорида и сулфата у воденим екстрактима летећих пепела далеко је испод законски дозвољених граница за отпад, на основу чега се могу сврстати у безопасне. Од испитиваних елемената у траговима, садржај Cd је најнижи, док је концентрација Mn највиша. Највеће обогаћење пепела у односу на одговарајући угаљ, примећено је за As, Pb, Hg, Cu, V и Cr. На основу добијених резултата показано је да је укупни садржај PAH највећи за летећи пепео добијен сагоревањем отпадног угља. Међу испитиваним PAH, највишу концентрацију има флуорантен. Ризици који потичу од арсена (међу канцерогеним елементима), као и арсена и никла (међу неканцерогеним елементима), премашују дозвољене граничне вредности. Вредност процењеног ризика од рака код одрасле популације у случају PAH, показује да за летећи пепео добијен сагоревањем отпадног угља постоји потенцијални ризик, док су вредности за остале пепеле унутар дозвољених граница.
T2  - Journal of the Serbian Chemical Society
T1  - Health risk assessment of potentially harmful substances from fly ashes generated by coal and coal waste combustion
T1  - Процена ризика за потенцијално опасне супстанце из летећих пепела добијених сагоревањем угља и отпадног угља
VL  - 88
IS  - 11
SP  - 1161
EP  - 1173
DO  - 10.2298/JSC220130048M
ER  - 

@article{
author = "Buha-Marković, Jovana and Marinković, Ana and Savić, Jasmina and Krstić, Aleksandar and Savić, Andrija and Ristic, Mirjana",
year = "2023",
abstract = "Lignite and coal waste used as feed fuels in thermal power plants (TPPs) and semi-industrial fluidized bed boiler (FBB), as well as their representative fly ashes (FAs), were examined. Fly ashes were compared employing anions and cations content in correspondent water extracts, trace elements and polycyclic aromatic hydrocarbon concentrations, as well as health risk assessments of substances known to be of concern for public health. Fluoride and sulfate contents in water extracted FAs are far below the legislation limits for waste, classifying all investigated FAs as non-hazardous. Among investigated trace elements, Cd content is the lowest, while Mn content is the highest. The highest enrichment ratios are noticed for As, Pb, Hg, Cu, V and Cr. The results indicate that total PAHs content is elevated in FA from the combustion of coal waste (AFB), with fluoranthene prevailing. The cancer risk of As and the non-cancer risk of As and Ni in some FAs surpass their respective permissible limits. The incremental lifetime cancer risk of an adult population indicates a potential PAHs risk in AFB, whereas all other fly ashes are within safe limits., У овом раду, испитивана су горива (лигнит и отпадни угаљ) која се користе у термоелектранама и полуиндустријском постројењу са флуидизованим слојем, као и летећи пепели добијени њиховим сагоревањем. Летећи пепели су упоређени на основу: садржаја анјона и катјона у њиховим воденим екстрактима, концентрације елемената у траговима и полицикличних ароматичних угљоводоника (PAH), као и процене здравственог ризика који потиче од претходно поменутих потенцијално опасних супстанци. Садржај флуорида и сулфата у воденим екстрактима летећих пепела далеко је испод законски дозвољених граница за отпад, на основу чега се могу сврстати у безопасне. Од испитиваних елемената у траговима, садржај Cd је најнижи, док је концентрација Mn највиша. Највеће обогаћење пепела у односу на одговарајући угаљ, примећено је за As, Pb, Hg, Cu, V и Cr. На основу добијених резултата показано је да је укупни садржај PAH највећи за летећи пепео добијен сагоревањем отпадног угља. Међу испитиваним PAH, највишу концентрацију има флуорантен. Ризици који потичу од арсена (међу канцерогеним елементима), као и арсена и никла (међу неканцерогеним елементима), премашују дозвољене граничне вредности. Вредност процењеног ризика од рака код одрасле популације у случају PAH, показује да за летећи пепео добијен сагоревањем отпадног угља постоји потенцијални ризик, док су вредности за остале пепеле унутар дозвољених граница.",
journal = "Journal of the Serbian Chemical Society",
title = "Health risk assessment of potentially harmful substances from fly ashes generated by coal and coal waste combustion, Процена ризика за потенцијално опасне супстанце из летећих пепела добијених сагоревањем угља и отпадног угља",
volume = "88",
number = "11",
pages = "1161-1173",
doi = "10.2298/JSC220130048M"
}

Buha-Marković, J., Marinković, A., Savić, J., Krstić, A., Savić, A.,& Ristic, M.. (2023). Health risk assessment of potentially harmful substances from fly ashes generated by coal and coal waste combustion. in Journal of the Serbian Chemical Society, 88(11), 1161-1173.
https://doi.org/10.2298/JSC220130048M

Buha-Marković J, Marinković A, Savić J, Krstić A, Savić A, Ristic M. Health risk assessment of potentially harmful substances from fly ashes generated by coal and coal waste combustion. in Journal of the Serbian Chemical Society. 2023;88(11):1161-1173.
doi:10.2298/JSC220130048M .

Buha-Marković, Jovana, Marinković, Ana, Savić, Jasmina, Krstić, Aleksandar, Savić, Andrija, Ristic, Mirjana, "Health risk assessment of potentially harmful substances from fly ashes generated by coal and coal waste combustion" in Journal of the Serbian Chemical Society, 88, no. 11 (2023):1161-1173,
https://doi.org/10.2298/JSC220130048M . .

TY  - JOUR
AU  - Buha-Marković, Jovana Z.
AU  - Marinković, Ana D.
AU  - Savić, Jasmina
AU  - Mladenović, Milica R.
AU  - Erić, Milić D.
AU  - Marković, Zoran J.
AU  - Ristić, Mirjana Đ.
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10932
AB  - Emission factors (EFs) of gaseous pollutants, particulate matter, certain harmful trace elements, and polycyclic aromatic hydrocarbons (PAHs) from three thermal power plants (TPPs) and semi-industrial fluidized bed boiler (FBB) were compared. EFs of particulate matter, trace elements (except Cd and Pb), benzo[a]pyrene, and benzo[b]fluoranthene exceed the upper limits specified in the EMEP inventory guidebook for all combustion facilities. The comparison of trace elements and PAHs content in fly ashes (FAs) from lignite and coal waste combustion in TPPs and FBB, respectively, as well as the potential environmental impact of FAs disposal, was performed by employing a set of ecological indicators such as crustal enrichment factor, risk assessment code, risk indices for trace elements, and benzo[a]pyrene equivalent concentration for PAHs. Sequential analysis shows that the trace elements portion is the lowest for water-soluble and exchangeable fractions. The highest enrichment levels in FAs are noticed for As and Hg. Based on toxic trace elements content, FAs from TPPs represent a very high ecological risk, whereas fly ash from FBB poses a moderate ecological risk but has the highest benzo[a]pyrene equivalent concentration, indicating its increased carcinogenic potential. Lead isotope ratios for Serbian coals and FAs can contribute to a lead pollution global database.
T2  - Toxics
T1  - Risk Evaluation of Pollutants Emission from Coal and Coal Waste Combustion Plants and Environmental Impact of Fly Ash Landfilling
VL  - 11
IS  - 4
SP  - 396
DO  - 10.3390/toxics11040396
ER  - 

@article{
author = "Buha-Marković, Jovana Z. and Marinković, Ana D. and Savić, Jasmina and Mladenović, Milica R. and Erić, Milić D. and Marković, Zoran J. and Ristić, Mirjana Đ.",
year = "2023",
abstract = "Emission factors (EFs) of gaseous pollutants, particulate matter, certain harmful trace elements, and polycyclic aromatic hydrocarbons (PAHs) from three thermal power plants (TPPs) and semi-industrial fluidized bed boiler (FBB) were compared. EFs of particulate matter, trace elements (except Cd and Pb), benzo[a]pyrene, and benzo[b]fluoranthene exceed the upper limits specified in the EMEP inventory guidebook for all combustion facilities. The comparison of trace elements and PAHs content in fly ashes (FAs) from lignite and coal waste combustion in TPPs and FBB, respectively, as well as the potential environmental impact of FAs disposal, was performed by employing a set of ecological indicators such as crustal enrichment factor, risk assessment code, risk indices for trace elements, and benzo[a]pyrene equivalent concentration for PAHs. Sequential analysis shows that the trace elements portion is the lowest for water-soluble and exchangeable fractions. The highest enrichment levels in FAs are noticed for As and Hg. Based on toxic trace elements content, FAs from TPPs represent a very high ecological risk, whereas fly ash from FBB poses a moderate ecological risk but has the highest benzo[a]pyrene equivalent concentration, indicating its increased carcinogenic potential. Lead isotope ratios for Serbian coals and FAs can contribute to a lead pollution global database.",
journal = "Toxics",
title = "Risk Evaluation of Pollutants Emission from Coal and Coal Waste Combustion Plants and Environmental Impact of Fly Ash Landfilling",
volume = "11",
number = "4",
pages = "396",
doi = "10.3390/toxics11040396"
}

Buha-Marković, J. Z., Marinković, A. D., Savić, J., Mladenović, M. R., Erić, M. D., Marković, Z. J.,& Ristić, M. Đ.. (2023). Risk Evaluation of Pollutants Emission from Coal and Coal Waste Combustion Plants and Environmental Impact of Fly Ash Landfilling. in Toxics, 11(4), 396.
https://doi.org/10.3390/toxics11040396

Buha-Marković JZ, Marinković AD, Savić J, Mladenović MR, Erić MD, Marković ZJ, Ristić MĐ. Risk Evaluation of Pollutants Emission from Coal and Coal Waste Combustion Plants and Environmental Impact of Fly Ash Landfilling. in Toxics. 2023;11(4):396.
doi:10.3390/toxics11040396 .

Buha-Marković, Jovana Z., Marinković, Ana D., Savić, Jasmina, Mladenović, Milica R., Erić, Milić D., Marković, Zoran J., Ristić, Mirjana Đ., "Risk Evaluation of Pollutants Emission from Coal and Coal Waste Combustion Plants and Environmental Impact of Fly Ash Landfilling" in Toxics, 11, no. 4 (2023):396,
https://doi.org/10.3390/toxics11040396 . .

TY  - JOUR
AU  - Marinković, Ana
AU  - Savić, Jasmina
AU  - Mladenović, Milica
AU  - Buha-Marković, Jovana
AU  - Petrov, Nevena
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11993
AB  - Despite many benefits of agricultural biomass utilization as an energy source, there are certain disadvantages such as the possible high emission of NOx. The NOx emission represents one of the key challenges for agricultural biomass use as a fuel. The experimental denitrification chamber was used to evaluate the impact of initial NO content, NH3:NO molar ratio, flue gas temperature, and the temperature difference between two denitrification chamber sections on NOx reduction using ammonia aqueous solution. The optimization of experimental conditions was done in the NO concentration range from 200-800 ppm, NH3:NO molar ratios from 0.31-3 and second chamber section temperature range from 770-67°C. The denitrification process under controlled conditions is the starting point for the optimization of the secondary denitrification technique of selective non-catalytic reduction SNCR process on real-scale plants combusting biomass or any other fuels with increased NOx emission.
T2  - Thermal Science
T1  - Selective non-catalytic denitrification of biomass combustion flue gases (synthetic mixture)
VL  - 27
IS  - 5 Part A
SP  - 3635
EP  - 3647
DO  - 10.2298/TSCI221202056M
ER  - 

@article{
author = "Marinković, Ana and Savić, Jasmina and Mladenović, Milica and Buha-Marković, Jovana and Petrov, Nevena",
year = "2023",
abstract = "Despite many benefits of agricultural biomass utilization as an energy source, there are certain disadvantages such as the possible high emission of NOx. The NOx emission represents one of the key challenges for agricultural biomass use as a fuel. The experimental denitrification chamber was used to evaluate the impact of initial NO content, NH3:NO molar ratio, flue gas temperature, and the temperature difference between two denitrification chamber sections on NOx reduction using ammonia aqueous solution. The optimization of experimental conditions was done in the NO concentration range from 200-800 ppm, NH3:NO molar ratios from 0.31-3 and second chamber section temperature range from 770-67°C. The denitrification process under controlled conditions is the starting point for the optimization of the secondary denitrification technique of selective non-catalytic reduction SNCR process on real-scale plants combusting biomass or any other fuels with increased NOx emission.",
journal = "Thermal Science",
title = "Selective non-catalytic denitrification of biomass combustion flue gases (synthetic mixture)",
volume = "27",
number = "5 Part A",
pages = "3635-3647",
doi = "10.2298/TSCI221202056M"
}

Marinković, A., Savić, J., Mladenović, M., Buha-Marković, J.,& Petrov, N.. (2023). Selective non-catalytic denitrification of biomass combustion flue gases (synthetic mixture). in Thermal Science, 27(5 Part A), 3635-3647.
https://doi.org/10.2298/TSCI221202056M

Marinković A, Savić J, Mladenović M, Buha-Marković J, Petrov N. Selective non-catalytic denitrification of biomass combustion flue gases (synthetic mixture). in Thermal Science. 2023;27(5 Part A):3635-3647.
doi:10.2298/TSCI221202056M .

Marinković, Ana, Savić, Jasmina, Mladenović, Milica, Buha-Marković, Jovana, Petrov, Nevena, "Selective non-catalytic denitrification of biomass combustion flue gases (synthetic mixture)" in Thermal Science, 27, no. 5 Part A (2023):3635-3647,
https://doi.org/10.2298/TSCI221202056M . .

TY  - CONF
AU  - Mladenović, Milica R.
AU  - Marinković, Ana
AU  - Erić, Aleksandar
AU  - Cvetinović, Dejan
AU  - Vučićević, Biljana
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12473
AB  - When we discuss biomass and its use for energy, we always have in mind its benefits, such as its ability to - reduce greenhouse gas emissions by replacing fossil fuels; - increase energy security by diversifying the energy mix and reducing dependence on imported fuels; and - create economic opportunities by promoting rural development, creating jobs, and adding value to waste streams. As a renewable energy source, biomass also has some obstacles to overcome. This paper addresses some of the key technical challenges associated with biomass combustion products - how to increase the ash melting temperature, i.e., reduce the formation of ash deposits on the heating surfaces, and how to reduce the emission of nitrogen oxides. It will also be seen whether it is safe to return all the ash produced by burning this fuel to the ground.
PB  - Belgrade : Society of Thermal Engineers of Serbia
C3  - International Conference Power Plants 2023 : Proceedings
T1  - Possible solutions to the challenges associated with biomass combustion
SP  - 894
EP  - 909
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12473
ER  - 

@conference{
author = "Mladenović, Milica R. and Marinković, Ana and Erić, Aleksandar and Cvetinović, Dejan and Vučićević, Biljana",
year = "2023",
abstract = "When we discuss biomass and its use for energy, we always have in mind its benefits, such as its ability to - reduce greenhouse gas emissions by replacing fossil fuels; - increase energy security by diversifying the energy mix and reducing dependence on imported fuels; and - create economic opportunities by promoting rural development, creating jobs, and adding value to waste streams. As a renewable energy source, biomass also has some obstacles to overcome. This paper addresses some of the key technical challenges associated with biomass combustion products - how to increase the ash melting temperature, i.e., reduce the formation of ash deposits on the heating surfaces, and how to reduce the emission of nitrogen oxides. It will also be seen whether it is safe to return all the ash produced by burning this fuel to the ground.",
publisher = "Belgrade : Society of Thermal Engineers of Serbia",
journal = "International Conference Power Plants 2023 : Proceedings",
title = "Possible solutions to the challenges associated with biomass combustion",
pages = "894-909",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12473"
}

Mladenović, M. R., Marinković, A., Erić, A., Cvetinović, D.,& Vučićević, B.. (2023). Possible solutions to the challenges associated with biomass combustion. in International Conference Power Plants 2023 : Proceedings
Belgrade : Society of Thermal Engineers of Serbia., 894-909.
https://hdl.handle.net/21.15107/rcub_vinar_12473

Mladenović MR, Marinković A, Erić A, Cvetinović D, Vučićević B. Possible solutions to the challenges associated with biomass combustion. in International Conference Power Plants 2023 : Proceedings. 2023;:894-909.
https://hdl.handle.net/21.15107/rcub_vinar_12473 .

Mladenović, Milica R., Marinković, Ana, Erić, Aleksandar, Cvetinović, Dejan, Vučićević, Biljana, "Possible solutions to the challenges associated with biomass combustion" in International Conference Power Plants 2023 : Proceedings (2023):894-909,
https://hdl.handle.net/21.15107/rcub_vinar_12473 .

TY  - JOUR
AU  - Marinković, Ana D.
AU  - Buha-Marković, Jovana Z.
AU  - Savić, Jasmina
AU  - Mladenović, Milica R.
AU  - Petrov, Nevena
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10554
AB  - Agricultural biomass is considered a preferred RES in Serbia because of its availability and suitability to limit the use of fossil fuel resources and reduce GHG emissions. Therefore, constant work has been done to develop technologies that enable its utilization for energy purposes. As an example of these efforts, in the Agricultural Corporation PKB, the soybean straw cigarette-type combustion system has been applied for greenhouse heating for over a decade. However, many volatile and semivolatile organic compounds are emitted directly into the atmosphere or concentrated in ash particles during agricultural biomass combustion. Since some of the emitted compounds, such as polycyclic aromatic hydrocarbons (PAHs), are toxic, monitoring their concentrations in fly ash is recommended. Literature data regarding PAHs content in agricultural biomass ashes are insubstantial, especially in Serbia. For that purpose, PAHs contents in the cyclone and stack fly ashes of soybean straw were investigated and compared. In addition, the emission factors, toxicity, carcinogenicity and benzo[a]pyrene equivalence concentrations were determined and used to estimate the potential environmental impact of these ashes. As a result, stack ash has been shown to have a higher potential environmental risk than cyclone ash. Hence, an assessment of using soybean straw as a feed fuel in a real cigarette-type combustion plant regarding PAHs emission is given. These results provide important information for optimizing combustion conditions and assisting the local entities in managing air pollution and control policies in Serbia.
T2  - Thermal Science
T1  - Polycyclic aromatic hydrocarbons emission from cigar burner combustion system and comparison of their content in fly ashes
VL  - 26
IS  - 6 Part A
SP  - 4749
EP  - 4761
DO  - 10.2298/TSCI220616138M
ER  - 

@article{
author = "Marinković, Ana D. and Buha-Marković, Jovana Z. and Savić, Jasmina and Mladenović, Milica R. and Petrov, Nevena",
year = "2022",
abstract = "Agricultural biomass is considered a preferred RES in Serbia because of its availability and suitability to limit the use of fossil fuel resources and reduce GHG emissions. Therefore, constant work has been done to develop technologies that enable its utilization for energy purposes. As an example of these efforts, in the Agricultural Corporation PKB, the soybean straw cigarette-type combustion system has been applied for greenhouse heating for over a decade. However, many volatile and semivolatile organic compounds are emitted directly into the atmosphere or concentrated in ash particles during agricultural biomass combustion. Since some of the emitted compounds, such as polycyclic aromatic hydrocarbons (PAHs), are toxic, monitoring their concentrations in fly ash is recommended. Literature data regarding PAHs content in agricultural biomass ashes are insubstantial, especially in Serbia. For that purpose, PAHs contents in the cyclone and stack fly ashes of soybean straw were investigated and compared. In addition, the emission factors, toxicity, carcinogenicity and benzo[a]pyrene equivalence concentrations were determined and used to estimate the potential environmental impact of these ashes. As a result, stack ash has been shown to have a higher potential environmental risk than cyclone ash. Hence, an assessment of using soybean straw as a feed fuel in a real cigarette-type combustion plant regarding PAHs emission is given. These results provide important information for optimizing combustion conditions and assisting the local entities in managing air pollution and control policies in Serbia.",
journal = "Thermal Science",
title = "Polycyclic aromatic hydrocarbons emission from cigar burner combustion system and comparison of their content in fly ashes",
volume = "26",
number = "6 Part A",
pages = "4749-4761",
doi = "10.2298/TSCI220616138M"
}

Marinković, A. D., Buha-Marković, J. Z., Savić, J., Mladenović, M. R.,& Petrov, N.. (2022). Polycyclic aromatic hydrocarbons emission from cigar burner combustion system and comparison of their content in fly ashes. in Thermal Science, 26(6 Part A), 4749-4761.
https://doi.org/10.2298/TSCI220616138M

Marinković AD, Buha-Marković JZ, Savić J, Mladenović MR, Petrov N. Polycyclic aromatic hydrocarbons emission from cigar burner combustion system and comparison of their content in fly ashes. in Thermal Science. 2022;26(6 Part A):4749-4761.
doi:10.2298/TSCI220616138M .

Marinković, Ana D., Buha-Marković, Jovana Z., Savić, Jasmina, Mladenović, Milica R., Petrov, Nevena, "Polycyclic aromatic hydrocarbons emission from cigar burner combustion system and comparison of their content in fly ashes" in Thermal Science, 26, no. 6 Part A (2022):4749-4761,
https://doi.org/10.2298/TSCI220616138M . .

TY  - JOUR
AU  - Mirković-Gorgievski, Marija
AU  - Marinković, Ana D.
AU  - Živković, Nikola V.
AU  - Živković, Emila M.
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10175
AB  - The content of combustible elements in solid mineral fuels (carbon, hydrogen, etc.) are very important, since they most directly affect the heat value. It should be noted that the fuel heat value depends on many other constituents, such as ash and moisture. In this paper, special attention has been paid to carbon content. In solid mineral fuels, carbon is found alone or bound in the form of various compounds. One of them is mineral carbonate compounds bound as carbonate carbon, which originates from absorbed CO2 from atmosphere. Determination of carbonate carbon content of solid mineral fuels was performed by standard gravimetric method (according to ISO 925: 2019), and newly developed instrumental method, using thermogravimetric analyzer LECO TGA 701. Comparison of obtained experimental results was done. Four types of coal, Kolubara lignite, Kostolac lignite, brown coal, and control coal sample were included in experimental analysis. In addition, moisture in the samples was also determined using analytical method and inspected using LECO TGA 701 thermogravimetric analyzer, as well as total carbon content using the LECO CHN 628 elemental analyzer. An analysis and comparison of the obtained results was performed, and comments and conclusions are presented. The experiments were done in the department for fuel characterization, Laboratory for Thermal Engineering and Energy, Institute of Nuclear Sciences Vinca.
T2  - Thermal Science
T1  - Gravimetric and instrumental methods comparison for experimental determination of carbonate carbon content in solid mineral fuels
VL  - 26
IS  - 1 Part A
SP  - 319
EP  - 328
DO  - 10.2298/TSCI210522237M
ER  - 

@article{
author = "Mirković-Gorgievski, Marija and Marinković, Ana D. and Živković, Nikola V. and Živković, Emila M.",
year = "2022",
abstract = "The content of combustible elements in solid mineral fuels (carbon, hydrogen, etc.) are very important, since they most directly affect the heat value. It should be noted that the fuel heat value depends on many other constituents, such as ash and moisture. In this paper, special attention has been paid to carbon content. In solid mineral fuels, carbon is found alone or bound in the form of various compounds. One of them is mineral carbonate compounds bound as carbonate carbon, which originates from absorbed CO2 from atmosphere. Determination of carbonate carbon content of solid mineral fuels was performed by standard gravimetric method (according to ISO 925: 2019), and newly developed instrumental method, using thermogravimetric analyzer LECO TGA 701. Comparison of obtained experimental results was done. Four types of coal, Kolubara lignite, Kostolac lignite, brown coal, and control coal sample were included in experimental analysis. In addition, moisture in the samples was also determined using analytical method and inspected using LECO TGA 701 thermogravimetric analyzer, as well as total carbon content using the LECO CHN 628 elemental analyzer. An analysis and comparison of the obtained results was performed, and comments and conclusions are presented. The experiments were done in the department for fuel characterization, Laboratory for Thermal Engineering and Energy, Institute of Nuclear Sciences Vinca.",
journal = "Thermal Science",
title = "Gravimetric and instrumental methods comparison for experimental determination of carbonate carbon content in solid mineral fuels",
volume = "26",
number = "1 Part A",
pages = "319-328",
doi = "10.2298/TSCI210522237M"
}

Mirković-Gorgievski, M., Marinković, A. D., Živković, N. V.,& Živković, E. M.. (2022). Gravimetric and instrumental methods comparison for experimental determination of carbonate carbon content in solid mineral fuels. in Thermal Science, 26(1 Part A), 319-328.
https://doi.org/10.2298/TSCI210522237M

Mirković-Gorgievski M, Marinković AD, Živković NV, Živković EM. Gravimetric and instrumental methods comparison for experimental determination of carbonate carbon content in solid mineral fuels. in Thermal Science. 2022;26(1 Part A):319-328.
doi:10.2298/TSCI210522237M .

Mirković-Gorgievski, Marija, Marinković, Ana D., Živković, Nikola V., Živković, Emila M., "Gravimetric and instrumental methods comparison for experimental determination of carbonate carbon content in solid mineral fuels" in Thermal Science, 26, no. 1 Part A (2022):319-328,
https://doi.org/10.2298/TSCI210522237M . .

TY  - JOUR
AU  - Buha Marković, Jovana
AU  - Marinković, Ana D.
AU  - Nemoda, Stevan
AU  - Savić, Jasmina
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9124
AB  - The comparison of fly ash generated from lignite combustion in a thermal power plant Kolubara A (Veliki Crljeni) and bottom and fly ash from coal waste combustion in a semi-industrial fluidized bed boiler (Vinča) was performed as the function of particle size. The average total concentrations of the 16 EPA priority PAHs in ash fractions are 0.49 mg kg−1 of ash (thermal power plant) and 17.48 mg kg−1 of ash (fluidized bed boiler). The sum of 3- and 4-ring PAHs accounts for more than 93% of overall PAHs concentration, and the most abundant among them is fluoranthene. The portions of PAHs groups defined based on their physico-chemical properties, as obtained from quantitative structure-activity relationship (QSAR) models included in the Vega platform, were determined. These portions, emission factors, and benzo[a]pyrene equivalence concentrations were further on used to estimate the potential environmental impact of ash disposal. The PAHs emission factors are higher compared to values in the air pollutant emission inventory guidebook of the cooperative program for monitoring and evaluation of the long-range transmission of air pollutants in Europe (EMEP/EEA). The overall emission factors of 16 PAHs for combustion of lignite and coal waste are determined to be 0.15 and 249.97 mg kg−1 of fuel, respectively. Based on the ratios of benzo[a]pyrene equivalence concentrations of each ash and correspondent fuel, the disposal of fly ash from the cyclone of fluidized bed boiler represents the highest risk to the environment among tested ashes.
T2  - Environmental Pollution
T1  - Distribution of PAHs in coal ashes from the thermal power plant and fluidized bed combustion system; estimation of environmental risk of ash disposal
VL  - 266
SP  - 115282
DO  - 10.1016/j.envpol.2020.115282
ER  - 

@article{
author = "Buha Marković, Jovana and Marinković, Ana D. and Nemoda, Stevan and Savić, Jasmina",
year = "2020",
abstract = "The comparison of fly ash generated from lignite combustion in a thermal power plant Kolubara A (Veliki Crljeni) and bottom and fly ash from coal waste combustion in a semi-industrial fluidized bed boiler (Vinča) was performed as the function of particle size. The average total concentrations of the 16 EPA priority PAHs in ash fractions are 0.49 mg kg−1 of ash (thermal power plant) and 17.48 mg kg−1 of ash (fluidized bed boiler). The sum of 3- and 4-ring PAHs accounts for more than 93% of overall PAHs concentration, and the most abundant among them is fluoranthene. The portions of PAHs groups defined based on their physico-chemical properties, as obtained from quantitative structure-activity relationship (QSAR) models included in the Vega platform, were determined. These portions, emission factors, and benzo[a]pyrene equivalence concentrations were further on used to estimate the potential environmental impact of ash disposal. The PAHs emission factors are higher compared to values in the air pollutant emission inventory guidebook of the cooperative program for monitoring and evaluation of the long-range transmission of air pollutants in Europe (EMEP/EEA). The overall emission factors of 16 PAHs for combustion of lignite and coal waste are determined to be 0.15 and 249.97 mg kg−1 of fuel, respectively. Based on the ratios of benzo[a]pyrene equivalence concentrations of each ash and correspondent fuel, the disposal of fly ash from the cyclone of fluidized bed boiler represents the highest risk to the environment among tested ashes.",
journal = "Environmental Pollution",
title = "Distribution of PAHs in coal ashes from the thermal power plant and fluidized bed combustion system; estimation of environmental risk of ash disposal",
volume = "266",
pages = "115282",
doi = "10.1016/j.envpol.2020.115282"
}

Buha Marković, J., Marinković, A. D., Nemoda, S.,& Savić, J.. (2020). Distribution of PAHs in coal ashes from the thermal power plant and fluidized bed combustion system; estimation of environmental risk of ash disposal. in Environmental Pollution, 266, 115282.
https://doi.org/10.1016/j.envpol.2020.115282

Buha Marković J, Marinković AD, Nemoda S, Savić J. Distribution of PAHs in coal ashes from the thermal power plant and fluidized bed combustion system; estimation of environmental risk of ash disposal. in Environmental Pollution. 2020;266:115282.
doi:10.1016/j.envpol.2020.115282 .

Buha Marković, Jovana, Marinković, Ana D., Nemoda, Stevan, Savić, Jasmina, "Distribution of PAHs in coal ashes from the thermal power plant and fluidized bed combustion system; estimation of environmental risk of ash disposal" in Environmental Pollution, 266 (2020):115282,
https://doi.org/10.1016/j.envpol.2020.115282 . .

TY  - JOUR
AU  - Repić, Branislav
AU  - Mladenović, Milica
AU  - Marinković, Ana
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12772
AB  - Combustion of coals and biomass in boiler furnaces leads to formation of fireside deposits on irradiated and convective surfaces. This problem is not a new one, but it became one of the main operational problems in boilers using low rank coal and some sort of biomass. In the paper presented are the results of research of ash deposit processes in laboratory conditions. An experimental furnace was used for these purposes. The experiments were performed on a tubular experimental furnace which ensures appropriate temperature and mass transfer conditions for physical and chemical transformations of the mineral matter of fuel as in real conditions. The main working parameters can be varied in wide ranges. The influence of grinding fineness, excess air and wall surface temperature was analysed. Also, an ash related problems during coal and biomass combustion was considered. Key empirical correlations for slagging and fouling were tested. Two types of Serbian coals (Kolubara and Kosovo) and several biomasses were analysed. It was shown that many sorts of biomass and Kosovo coal have a great propensity to slagging and fouling.
T2  - Thermal Science
T1  - Investigation of ash deposit formation on heat transfer surfaces of boilers using coals and biomass
VL  - 23
IS  - Suppl. 5
SP  - 1575
EP  - 1586
DO  - 10.2298/tsci180413285r
ER  - 

@article{
author = "Repić, Branislav and Mladenović, Milica and Marinković, Ana",
year = "2019",
abstract = "Combustion of coals and biomass in boiler furnaces leads to formation of fireside deposits on irradiated and convective surfaces. This problem is not a new one, but it became one of the main operational problems in boilers using low rank coal and some sort of biomass. In the paper presented are the results of research of ash deposit processes in laboratory conditions. An experimental furnace was used for these purposes. The experiments were performed on a tubular experimental furnace which ensures appropriate temperature and mass transfer conditions for physical and chemical transformations of the mineral matter of fuel as in real conditions. The main working parameters can be varied in wide ranges. The influence of grinding fineness, excess air and wall surface temperature was analysed. Also, an ash related problems during coal and biomass combustion was considered. Key empirical correlations for slagging and fouling were tested. Two types of Serbian coals (Kolubara and Kosovo) and several biomasses were analysed. It was shown that many sorts of biomass and Kosovo coal have a great propensity to slagging and fouling.",
journal = "Thermal Science",
title = "Investigation of ash deposit formation on heat transfer surfaces of boilers using coals and biomass",
volume = "23",
number = "Suppl. 5",
pages = "1575-1586",
doi = "10.2298/tsci180413285r"
}

Repić, B., Mladenović, M.,& Marinković, A.. (2019). Investigation of ash deposit formation on heat transfer surfaces of boilers using coals and biomass. in Thermal Science, 23(Suppl. 5), 1575-1586.
https://doi.org/10.2298/tsci180413285r

Repić B, Mladenović M, Marinković A. Investigation of ash deposit formation on heat transfer surfaces of boilers using coals and biomass. in Thermal Science. 2019;23(Suppl. 5):1575-1586.
doi:10.2298/tsci180413285r .

Repić, Branislav, Mladenović, Milica, Marinković, Ana, "Investigation of ash deposit formation on heat transfer surfaces of boilers using coals and biomass" in Thermal Science, 23, no. Suppl. 5 (2019):1575-1586,
https://doi.org/10.2298/tsci180413285r . .

TY  - CONF
AU  - Marinković, Ana D.
AU  - Buha, Jovana Z.
AU  - Savić, Jasmina
AU  - Mladenović, Milica R.
AU  - Repić, Branislav
AU  - Nemoda, Stevan Đ.
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12777
AB  - Biomass combustion has many advantages compared to fossil fuels due to reduction of carbon dioxide emissions, but several issues are present during biomass combustion. One that must always be considered is emission of nitrogen oxides (NOx), which have significant impact on the environment and health. At biomass combustion, main mechanism responsible for NOx emission is oxidation of fuel-bound nitrogen. Increased NOx emissions are particularly present at agricultural biomass combustion, due to its increased nitrogen content, which is further expressed by the use of nitrogen fertilizer. Denitrification methods are classified as pre-combustion, combustion control and post-combustion (flue gas treatment) methods. Aim of this paper is to provide insight in different flue gas denitrification methods (DeNOx measures) from the review of existing literature, with emphasis on post-combustion methods, since they have higher efficiency. Also, pre-combustion and combustion control methods at agricultural biomass combustion often do not provide reduction below emission standards. Selective catalytic (SCR) and selective noncatalytic reduction (SNCR), wet scrubbing, adsorption, electron beam, electrochemical method, non-thermal plasma and microbial approach were considered. For each method, mechanism of NOx reduction is given and discussed, alongside with efficiency that could be achieved. Overall comparison of advantages and disadvantages for these methods is provided. Further research of denitrification and optimization of described methods, to overcome NOx emission problem is required. Application of these methods in commercial use and increasing their efficiency, while solving cost and methods disadvantages, is key for biomass to be used as a renewable energy source and fossil fuel replacement.
PB  - Niš : University of Niš, Faculty of Mechanical Engineering
C3  - 19th Conference on Thermal Science and Engineering of Serbia with the accompanying exhibition of equipment and achievements : Proceedings
T1  - Determination of polycyclic aromatic hydrocarbons in biomass ash from cigar burner combustion systems
SP  - 420
EP  - 430
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12777
ER  - 

@conference{
author = "Marinković, Ana D. and Buha, Jovana Z. and Savić, Jasmina and Mladenović, Milica R. and Repić, Branislav and Nemoda, Stevan Đ.",
year = "2019",
abstract = "Biomass combustion has many advantages compared to fossil fuels due to reduction of carbon dioxide emissions, but several issues are present during biomass combustion. One that must always be considered is emission of nitrogen oxides (NOx), which have significant impact on the environment and health. At biomass combustion, main mechanism responsible for NOx emission is oxidation of fuel-bound nitrogen. Increased NOx emissions are particularly present at agricultural biomass combustion, due to its increased nitrogen content, which is further expressed by the use of nitrogen fertilizer. Denitrification methods are classified as pre-combustion, combustion control and post-combustion (flue gas treatment) methods. Aim of this paper is to provide insight in different flue gas denitrification methods (DeNOx measures) from the review of existing literature, with emphasis on post-combustion methods, since they have higher efficiency. Also, pre-combustion and combustion control methods at agricultural biomass combustion often do not provide reduction below emission standards. Selective catalytic (SCR) and selective noncatalytic reduction (SNCR), wet scrubbing, adsorption, electron beam, electrochemical method, non-thermal plasma and microbial approach were considered. For each method, mechanism of NOx reduction is given and discussed, alongside with efficiency that could be achieved. Overall comparison of advantages and disadvantages for these methods is provided. Further research of denitrification and optimization of described methods, to overcome NOx emission problem is required. Application of these methods in commercial use and increasing their efficiency, while solving cost and methods disadvantages, is key for biomass to be used as a renewable energy source and fossil fuel replacement.",
publisher = "Niš : University of Niš, Faculty of Mechanical Engineering",
journal = "19th Conference on Thermal Science and Engineering of Serbia with the accompanying exhibition of equipment and achievements : Proceedings",
title = "Determination of polycyclic aromatic hydrocarbons in biomass ash from cigar burner combustion systems",
pages = "420-430",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12777"
}

Marinković, A. D., Buha, J. Z., Savić, J., Mladenović, M. R., Repić, B.,& Nemoda, S. Đ.. (2019). Determination of polycyclic aromatic hydrocarbons in biomass ash from cigar burner combustion systems. in 19th Conference on Thermal Science and Engineering of Serbia with the accompanying exhibition of equipment and achievements : Proceedings
Niš : University of Niš, Faculty of Mechanical Engineering., 420-430.
https://hdl.handle.net/21.15107/rcub_vinar_12777

Marinković AD, Buha JZ, Savić J, Mladenović MR, Repić B, Nemoda SĐ. Determination of polycyclic aromatic hydrocarbons in biomass ash from cigar burner combustion systems. in 19th Conference on Thermal Science and Engineering of Serbia with the accompanying exhibition of equipment and achievements : Proceedings. 2019;:420-430.
https://hdl.handle.net/21.15107/rcub_vinar_12777 .

Marinković, Ana D., Buha, Jovana Z., Savić, Jasmina, Mladenović, Milica R., Repić, Branislav, Nemoda, Stevan Đ., "Determination of polycyclic aromatic hydrocarbons in biomass ash from cigar burner combustion systems" in 19th Conference on Thermal Science and Engineering of Serbia with the accompanying exhibition of equipment and achievements : Proceedings (2019):420-430,
https://hdl.handle.net/21.15107/rcub_vinar_12777 .

TY  - CONF
AU  - Repić, Branislav
AU  - Erić, Aleksandar
AU  - Marinković, Ana D.
AU  - Nemoda, Stevan
AU  - Mladenović, Milica R.
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8471
AB  - In order to study the combustion process of baled biomass several experimental facility was built. During the investigations for several years certain problems were founded. In the paper presented the results of these investigations that were carried out in real and laboratory conditions. Investigation of the influence of bale quality to the process of biomass combustion shows that careful bales choosing avoid many problems in the boiler operation. Performed experimental investigation has demonstrated that the use of additives allows for safe and reliable biomass combustion, even of biomass varieties characterized by low ash melting temperature, such as wheat straw and maize. Investigation of the characteristics of biomass exposed to the process of leaching and washing indicate that the washing of wheat straw affects the chemical composition of the ash, which is reflected in the increase the ash melting temperatures. The results of the performed tests in experimental furnace in many ways help to better behavior the process of baled biomass combustion in order to avoid the exploitation problems of the use of agricultural biomass. Also, the results of this research will be used in designing and construction the new plants that will burn agricultural baled biomass. © 2019 ETA-Florence Renewable Energies.
C3  - European Biomass Conference and Exhibition Proceedings
T1  - Investigation of the influence of fuel characteristics on biomass combustion in real and laboratory conditions
SP  - 655
EP  - 666
UR  - https://hdl.handle.net/21.15107/rcub_vinar_8471
ER  - 

@conference{
author = "Repić, Branislav and Erić, Aleksandar and Marinković, Ana D. and Nemoda, Stevan and Mladenović, Milica R.",
year = "2019",
abstract = "In order to study the combustion process of baled biomass several experimental facility was built. During the investigations for several years certain problems were founded. In the paper presented the results of these investigations that were carried out in real and laboratory conditions. Investigation of the influence of bale quality to the process of biomass combustion shows that careful bales choosing avoid many problems in the boiler operation. Performed experimental investigation has demonstrated that the use of additives allows for safe and reliable biomass combustion, even of biomass varieties characterized by low ash melting temperature, such as wheat straw and maize. Investigation of the characteristics of biomass exposed to the process of leaching and washing indicate that the washing of wheat straw affects the chemical composition of the ash, which is reflected in the increase the ash melting temperatures. The results of the performed tests in experimental furnace in many ways help to better behavior the process of baled biomass combustion in order to avoid the exploitation problems of the use of agricultural biomass. Also, the results of this research will be used in designing and construction the new plants that will burn agricultural baled biomass. © 2019 ETA-Florence Renewable Energies.",
journal = "European Biomass Conference and Exhibition Proceedings",
title = "Investigation of the influence of fuel characteristics on biomass combustion in real and laboratory conditions",
pages = "655-666",
url = "https://hdl.handle.net/21.15107/rcub_vinar_8471"
}

Repić, B., Erić, A., Marinković, A. D., Nemoda, S.,& Mladenović, M. R.. (2019). Investigation of the influence of fuel characteristics on biomass combustion in real and laboratory conditions. in European Biomass Conference and Exhibition Proceedings, 655-666.
https://hdl.handle.net/21.15107/rcub_vinar_8471

Repić B, Erić A, Marinković AD, Nemoda S, Mladenović MR. Investigation of the influence of fuel characteristics on biomass combustion in real and laboratory conditions. in European Biomass Conference and Exhibition Proceedings. 2019;:655-666.
https://hdl.handle.net/21.15107/rcub_vinar_8471 .

Repić, Branislav, Erić, Aleksandar, Marinković, Ana D., Nemoda, Stevan, Mladenović, Milica R., "Investigation of the influence of fuel characteristics on biomass combustion in real and laboratory conditions" in European Biomass Conference and Exhibition Proceedings (2019):655-666,
https://hdl.handle.net/21.15107/rcub_vinar_8471 .

TY  - JOUR
AU  - Mladenović, Milica R.
AU  - Nemoda, Stevan
AU  - Paprika, Milijana
AU  - Marinković, Ana D.
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8986
AB  - In Laboratory for Thermal Engineering and Energy of Institute Vinca, University of Belgrade, a 2-D CFD modeling procedure of numerical simulation of unconventional liquid fuel combustion in bubbling fluidized bed has been developed. This procedure is based on a two-fluid Euler-Euler approach modeling a fluidized bed with the determination of the velocities field of gas and particulates in two-phase, granular flows, analog to the kinetic theory of gases. This model describes in detail the unsteady motion of gas and solid phases, the formation and movement of bubbles with the combustion process in the fluidized bed, but temperature profiles calculated by the bed height differ to some extent from the experimentally obtained profiles. This discrepancy is probably due to the inability of a two-fluid CFD model to give a realistic simulation of the liquid fuel mixing in a fluidized bed. Therefore, an analytical model has been developed, where one of the basic assumptions is that the particles are mixed in the vertical direction of fluidized bed mainly by the bubble wakes. The proposed zonal type of calculating procedure is based on Davidson and Harrison two-phase model of the bubbling fluidized bed, where fluidized bed is divided into zones within which material and energy balances are set.
T2  - Thermal Science
T1  - Application of analytical and CFD models of liquid fuels combustion in a fluidized bed
VL  - 23
IS  - Suppl. 5
SP  - 1627
EP  - 1636
DO  - 10.2298/TSCI180226317M
ER  - 

@article{
author = "Mladenović, Milica R. and Nemoda, Stevan and Paprika, Milijana and Marinković, Ana D.",
year = "2019",
abstract = "In Laboratory for Thermal Engineering and Energy of Institute Vinca, University of Belgrade, a 2-D CFD modeling procedure of numerical simulation of unconventional liquid fuel combustion in bubbling fluidized bed has been developed. This procedure is based on a two-fluid Euler-Euler approach modeling a fluidized bed with the determination of the velocities field of gas and particulates in two-phase, granular flows, analog to the kinetic theory of gases. This model describes in detail the unsteady motion of gas and solid phases, the formation and movement of bubbles with the combustion process in the fluidized bed, but temperature profiles calculated by the bed height differ to some extent from the experimentally obtained profiles. This discrepancy is probably due to the inability of a two-fluid CFD model to give a realistic simulation of the liquid fuel mixing in a fluidized bed. Therefore, an analytical model has been developed, where one of the basic assumptions is that the particles are mixed in the vertical direction of fluidized bed mainly by the bubble wakes. The proposed zonal type of calculating procedure is based on Davidson and Harrison two-phase model of the bubbling fluidized bed, where fluidized bed is divided into zones within which material and energy balances are set.",
journal = "Thermal Science",
title = "Application of analytical and CFD models of liquid fuels combustion in a fluidized bed",
volume = "23",
number = "Suppl. 5",
pages = "1627-1636",
doi = "10.2298/TSCI180226317M"
}

Mladenović, M. R., Nemoda, S., Paprika, M.,& Marinković, A. D.. (2019). Application of analytical and CFD models of liquid fuels combustion in a fluidized bed. in Thermal Science, 23(Suppl. 5), 1627-1636.
https://doi.org/10.2298/TSCI180226317M

Mladenović MR, Nemoda S, Paprika M, Marinković AD. Application of analytical and CFD models of liquid fuels combustion in a fluidized bed. in Thermal Science. 2019;23(Suppl. 5):1627-1636.
doi:10.2298/TSCI180226317M .

Mladenović, Milica R., Nemoda, Stevan, Paprika, Milijana, Marinković, Ana D., "Application of analytical and CFD models of liquid fuels combustion in a fluidized bed" in Thermal Science, 23, no. Suppl. 5 (2019):1627-1636,
https://doi.org/10.2298/TSCI180226317M . .

TY  - JOUR
AU  - Mladenović, Milica R.
AU  - Paprika, Milijana
AU  - Marinković, Ana D.
PY  - 2018
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1883
AB  - In order to achieve the main Applicable combustion control systems in grate-fired bogoals of sustainable development through the harmonization of rising energy needs with environmental protection, modern society promotes the use of biomass as a renewable energy source. Biomass, like any taother fuel, emits certain pollutants from combustion, nitrogen oxides (NOx) being one of them. Control of NOx emission, originated in biomass combustion, is becoming a very significant technical challenge due to the imposition of increasingly strict emission limits. The experimental research and industrial experiences (that are not always easily available) were analyzed in order to make an overview of proven and prospective technical solutions, as well as directions for practical applications for reducing NOx emissions originating from biomass combustion. The denitrification techniques according to the broadest classification (pre-combustion, combustion control and post-combustion) have been analyzed. As the NOx emission is more strongly influenced by the nitrogen content of biomass fuels (especially of those with significant nitrogen content) rather than the operating conditions, the emphasis is placed on the post-combustion (secondary denitrification) measures and the most successful among them - selective catalytic (SCR) and non-catalytic reduction (SNCR). The SCR catalysts, as well as commonly used amine-based reagents (in both SCR and SNCR), are analyzed in accordance with various parameters (activity temperature domain, the location of installation and structural configuration). The special challenges for SCR and SNCR application were considered, and a comparative overview of advantages and disadvantages are given, in accordance with several different criteria. In addition, the applicability of deNOx techniques from the aspect of individual biomass combustion technology is given. Guidelines for the selection of denitrification measures are created, depending on the biomass combusted, combustion technology used, and the installation capacity.
T2  - Renewable and Sustainable Energy Reviews
T1  - Denitrification techniques for biomass combustion
VL  - 82
SP  - 3350
EP  - 3364
DO  - 10.1016/j.rser.2017.10.054
ER  - 

@article{
author = "Mladenović, Milica R. and Paprika, Milijana and Marinković, Ana D.",
year = "2018",
abstract = "In order to achieve the main Applicable combustion control systems in grate-fired bogoals of sustainable development through the harmonization of rising energy needs with environmental protection, modern society promotes the use of biomass as a renewable energy source. Biomass, like any taother fuel, emits certain pollutants from combustion, nitrogen oxides (NOx) being one of them. Control of NOx emission, originated in biomass combustion, is becoming a very significant technical challenge due to the imposition of increasingly strict emission limits. The experimental research and industrial experiences (that are not always easily available) were analyzed in order to make an overview of proven and prospective technical solutions, as well as directions for practical applications for reducing NOx emissions originating from biomass combustion. The denitrification techniques according to the broadest classification (pre-combustion, combustion control and post-combustion) have been analyzed. As the NOx emission is more strongly influenced by the nitrogen content of biomass fuels (especially of those with significant nitrogen content) rather than the operating conditions, the emphasis is placed on the post-combustion (secondary denitrification) measures and the most successful among them - selective catalytic (SCR) and non-catalytic reduction (SNCR). The SCR catalysts, as well as commonly used amine-based reagents (in both SCR and SNCR), are analyzed in accordance with various parameters (activity temperature domain, the location of installation and structural configuration). The special challenges for SCR and SNCR application were considered, and a comparative overview of advantages and disadvantages are given, in accordance with several different criteria. In addition, the applicability of deNOx techniques from the aspect of individual biomass combustion technology is given. Guidelines for the selection of denitrification measures are created, depending on the biomass combusted, combustion technology used, and the installation capacity.",
journal = "Renewable and Sustainable Energy Reviews",
title = "Denitrification techniques for biomass combustion",
volume = "82",
pages = "3350-3364",
doi = "10.1016/j.rser.2017.10.054"
}

Mladenović, M. R., Paprika, M.,& Marinković, A. D.. (2018). Denitrification techniques for biomass combustion. in Renewable and Sustainable Energy Reviews, 82, 3350-3364.
https://doi.org/10.1016/j.rser.2017.10.054

Mladenović MR, Paprika M, Marinković AD. Denitrification techniques for biomass combustion. in Renewable and Sustainable Energy Reviews. 2018;82:3350-3364.
doi:10.1016/j.rser.2017.10.054 .

Mladenović, Milica R., Paprika, Milijana, Marinković, Ana D., "Denitrification techniques for biomass combustion" in Renewable and Sustainable Energy Reviews, 82 (2018):3350-3364,
https://doi.org/10.1016/j.rser.2017.10.054 . .

TY  - JOUR
AU  - Nemoda, Stevan
AU  - Paprika, Milijana
AU  - Mladenović, Milica R.
AU  - Marinković, Ana D.
AU  - Živković, Goran S.
PY  - 2018
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7696
AB  - Lately, experimental methods and numerical simulations are equally employed for the purpose of developing incineration bubbling fluidized bed (BFB) facilities. The paper presents the results of the 2-D CFD model of liquid fuel combustion in BFB, applied for numerical simulation of a fluidized bed furnace. The numerical procedure is based on the two-fluid Euler-Euler approach, where the velocity field of the gas and particles are modeled in analogy to the kinetic gas theory. The proposed numerical model comprises energy equations for all three phases (gas, inert fluidized particles, and liquid fuel), as well as the transport equations of chemical components that are participating in the reactions of combustion and devolatilization. The model equations are solved applying a commercial CFD package, whereby the user submodels were developed for heterogenic fluidized bed combustion of liquid fuels and for interphase drag forces for all three phases. The results of temperature field calculation were compared with the experiments, carried out in-house, on a BFB pilot facility. The numerical experiments, based on the proposed mathematical model, have been used for the purposes of analyzing the impacts of various fuel flow rates, and fluidization numbers, on the combustion efficiency and on the temperature fields in the combustion zone.
T2  - Thermal Science
T1  - Two-dimensional mathematical model of liquid fuel combustion in bubbling fluidized bed applied for a fluidized furnace numerical simulation
VL  - 22
IS  - 2
SP  - 1121
EP  - 1135
DO  - 10.2298/TSCI170922307N
ER  - 

@article{
author = "Nemoda, Stevan and Paprika, Milijana and Mladenović, Milica R. and Marinković, Ana D. and Živković, Goran S.",
year = "2018",
abstract = "Lately, experimental methods and numerical simulations are equally employed for the purpose of developing incineration bubbling fluidized bed (BFB) facilities. The paper presents the results of the 2-D CFD model of liquid fuel combustion in BFB, applied for numerical simulation of a fluidized bed furnace. The numerical procedure is based on the two-fluid Euler-Euler approach, where the velocity field of the gas and particles are modeled in analogy to the kinetic gas theory. The proposed numerical model comprises energy equations for all three phases (gas, inert fluidized particles, and liquid fuel), as well as the transport equations of chemical components that are participating in the reactions of combustion and devolatilization. The model equations are solved applying a commercial CFD package, whereby the user submodels were developed for heterogenic fluidized bed combustion of liquid fuels and for interphase drag forces for all three phases. The results of temperature field calculation were compared with the experiments, carried out in-house, on a BFB pilot facility. The numerical experiments, based on the proposed mathematical model, have been used for the purposes of analyzing the impacts of various fuel flow rates, and fluidization numbers, on the combustion efficiency and on the temperature fields in the combustion zone.",
journal = "Thermal Science",
title = "Two-dimensional mathematical model of liquid fuel combustion in bubbling fluidized bed applied for a fluidized furnace numerical simulation",
volume = "22",
number = "2",
pages = "1121-1135",
doi = "10.2298/TSCI170922307N"
}

Nemoda, S., Paprika, M., Mladenović, M. R., Marinković, A. D.,& Živković, G. S.. (2018). Two-dimensional mathematical model of liquid fuel combustion in bubbling fluidized bed applied for a fluidized furnace numerical simulation. in Thermal Science, 22(2), 1121-1135.
https://doi.org/10.2298/TSCI170922307N

Nemoda S, Paprika M, Mladenović MR, Marinković AD, Živković GS. Two-dimensional mathematical model of liquid fuel combustion in bubbling fluidized bed applied for a fluidized furnace numerical simulation. in Thermal Science. 2018;22(2):1121-1135.
doi:10.2298/TSCI170922307N .

Nemoda, Stevan, Paprika, Milijana, Mladenović, Milica R., Marinković, Ana D., Živković, Goran S., "Two-dimensional mathematical model of liquid fuel combustion in bubbling fluidized bed applied for a fluidized furnace numerical simulation" in Thermal Science, 22, no. 2 (2018):1121-1135,
https://doi.org/10.2298/TSCI170922307N . .

TY  - JOUR
AU  - Nemoda, Stevan
AU  - Mladenović, Milica
AU  - Marinković, Ana
AU  - Živković, Goran
PY  - 2018
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11169
AB  - Istraživanja vezana za razvoj sekundarnih mera denitrifikacije dimnih gasova
sagorevanja agrarne biomase su sve aktuelnija zbog sve intenzivnije primene ovog
obnovljivog goriva i pospešivanja održivog razvoja, odnosno smanjenja potrošnje fosilnih
goriva. Pri tome agrarna biomasa kao gorivo, pored niza prednosti, ima važan nedostatak
zbog značajne emisije azotnih oksida. U radu se u prvom redu analiziraju hemijske reakcije
selektivne nekalitičke redukcije azot-monoksida primenom amonijaka kao reagensa.
Analiziraju se dva kinetička modela, jedan krajnje uprošćen, koji uzima u obzir samo dve
neto reakcije i složeniji sa sedam hemijskih reakcija. Razmatrani hemijsko-kinetički modeli
su inkorporirani u sveobuhvatni CFD model složenih procesa u eksperimentalnoj
denitrifikacionoj komori za simuliranje procesa industrijske denitrifikacije. Pri tome je
obavljena sveobuhvatna analiza procesa, koja uključuje simulaciju strujanja, mešanja
komponenti i praćenje lokalnih hemijskih reakcija. Rezultati numeričke simulacije procesa
u eksperimentalnoj denitrifikacionoj komori su poređeni sa eksperimentima iz literature,
kao i sa rezultatima modela drugih autora. Pri tome su obezbeđeni isti granični uslovi
odvijanja razmatranih procesa, tj ulazne koncetracije komponenta su: 300 ppm NH3, 300
ppm NO, 4.0% O2, 4.5% H2O, a vreme boravka reaktanata u komori je 150 ms.
Ključne reči: biomasa, sagorevanje, emisija azotnih oksida, denitrifikacija.
AB  - Research related to the development of secondary measures of denitrification of agrarian biomass combustion gases is becoming more and more actual due to the increasingly intensive application of this renewable fuel and the promotion of sustainable development, ie, the reduction of consumption of fossil fuels. Thereby, in spite of a number of advantages, agrarian biomass has an important disadvantage due to significant emissions of nitrogen oxides. The paper deals primarily with the chemical reactions of selective noncatalytic reduction of nitrogen monoxide using ammonia as a reagent. Two kinetic models, one rather simplistic, which takes into account only two net reactions and other, more complex with seven chemical reactions, are analyzed. The considered chemicalkinetic models are incorporated into a comprehensive CFD model of complex processes in an experimental denitrification chamber. The CFD model was included flow simulation, components mixing and monitoring of local chemical reactions. The results of presented numerical simulation were compared with literature experiments, as well as with the results of other authors' models. The same boundary conditions of the considered processes are provided, i.e. the input concentrations of the component are: 300 ppm NH3, 300 ppm NO, 4.0% O2, 4.5% H2O, and the residence time of the reactants in the chamber is 150 ms.
T2  - Savremena poljoprivredna tehnika
T1  - The application of chemical kinetic models in numerical simulation of the process of non-catalitic reduction of NOX with amonia in biomass combustion products
VL  - 44
IS  - 1
SP  - 37
EP  - 44
DO  - 10.5937/SavPoljTeh1801037N
ER  - 

@article{
author = "Nemoda, Stevan and Mladenović, Milica and Marinković, Ana and Živković, Goran",
year = "2018",
abstract = "Istraživanja vezana za razvoj sekundarnih mera denitrifikacije dimnih gasova
sagorevanja agrarne biomase su sve aktuelnija zbog sve intenzivnije primene ovog
obnovljivog goriva i pospešivanja održivog razvoja, odnosno smanjenja potrošnje fosilnih
goriva. Pri tome agrarna biomasa kao gorivo, pored niza prednosti, ima važan nedostatak
zbog značajne emisije azotnih oksida. U radu se u prvom redu analiziraju hemijske reakcije
selektivne nekalitičke redukcije azot-monoksida primenom amonijaka kao reagensa.
Analiziraju se dva kinetička modela, jedan krajnje uprošćen, koji uzima u obzir samo dve
neto reakcije i složeniji sa sedam hemijskih reakcija. Razmatrani hemijsko-kinetički modeli
su inkorporirani u sveobuhvatni CFD model složenih procesa u eksperimentalnoj
denitrifikacionoj komori za simuliranje procesa industrijske denitrifikacije. Pri tome je
obavljena sveobuhvatna analiza procesa, koja uključuje simulaciju strujanja, mešanja
komponenti i praćenje lokalnih hemijskih reakcija. Rezultati numeričke simulacije procesa
u eksperimentalnoj denitrifikacionoj komori su poređeni sa eksperimentima iz literature,
kao i sa rezultatima modela drugih autora. Pri tome su obezbeđeni isti granični uslovi
odvijanja razmatranih procesa, tj ulazne koncetracije komponenta su: 300 ppm NH3, 300
ppm NO, 4.0% O2, 4.5% H2O, a vreme boravka reaktanata u komori je 150 ms.
Ključne reči: biomasa, sagorevanje, emisija azotnih oksida, denitrifikacija., Research related to the development of secondary measures of denitrification of agrarian biomass combustion gases is becoming more and more actual due to the increasingly intensive application of this renewable fuel and the promotion of sustainable development, ie, the reduction of consumption of fossil fuels. Thereby, in spite of a number of advantages, agrarian biomass has an important disadvantage due to significant emissions of nitrogen oxides. The paper deals primarily with the chemical reactions of selective noncatalytic reduction of nitrogen monoxide using ammonia as a reagent. Two kinetic models, one rather simplistic, which takes into account only two net reactions and other, more complex with seven chemical reactions, are analyzed. The considered chemicalkinetic models are incorporated into a comprehensive CFD model of complex processes in an experimental denitrification chamber. The CFD model was included flow simulation, components mixing and monitoring of local chemical reactions. The results of presented numerical simulation were compared with literature experiments, as well as with the results of other authors' models. The same boundary conditions of the considered processes are provided, i.e. the input concentrations of the component are: 300 ppm NH3, 300 ppm NO, 4.0% O2, 4.5% H2O, and the residence time of the reactants in the chamber is 150 ms.",
journal = "Savremena poljoprivredna tehnika",
title = "The application of chemical kinetic models in numerical simulation of the process of non-catalitic reduction of NOX with amonia in biomass combustion products",
volume = "44",
number = "1",
pages = "37-44",
doi = "10.5937/SavPoljTeh1801037N"
}

Nemoda, S., Mladenović, M., Marinković, A.,& Živković, G.. (2018). The application of chemical kinetic models in numerical simulation of the process of non-catalitic reduction of NOX with amonia in biomass combustion products. in Savremena poljoprivredna tehnika, 44(1), 37-44.
https://doi.org/10.5937/SavPoljTeh1801037N

Nemoda S, Mladenović M, Marinković A, Živković G. The application of chemical kinetic models in numerical simulation of the process of non-catalitic reduction of NOX with amonia in biomass combustion products. in Savremena poljoprivredna tehnika. 2018;44(1):37-44.
doi:10.5937/SavPoljTeh1801037N .

Nemoda, Stevan, Mladenović, Milica, Marinković, Ana, Živković, Goran, "The application of chemical kinetic models in numerical simulation of the process of non-catalitic reduction of NOX with amonia in biomass combustion products" in Savremena poljoprivredna tehnika, 44, no. 1 (2018):37-44,
https://doi.org/10.5937/SavPoljTeh1801037N . .

TY  - CONF
AU  - Mladenović, Milica
AU  - Marinković, Ana
AU  - Paprika, Milijana
AU  - Repić, Branislav
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11600
AB  - Iako se sagorevanje biomase promoviše sa stanovišta očuvanja životne sredine zbog značajno manje emisije štetnih gasova nego pri sagorevanju najzastupljenijeg domaćeg fosilnog goriva-uglja, eksperimenti sagorevanja više tipova biomase su pokazali da se i ovim sagorevanjem emituje izvesna količina polutanata koju je potrebno kontrolisati. Emisija azotnih oksida (NOx) je jedan od najvećih izazova u tom pogledu. Poznavanje i kontrolisanje emisije ovih oksida prilikom sagorevanja biomase je neophodno radi uspostavljanja korektnih zakonskih normi u pogledu granične emisije i za razvoj što kvalitetnijih tehnologija za sagorevanje ove vrste goriva. U tom cilju u radu je dat opis eksperimentalne aparature, koja ima za cilj da ispita efikasan način za redukciju NOx-a u dimnim gasovima upotrebom sekundarnih mera denitrifikacije. Takođe su dati i termički proračuni parametara sagorevanja u eksperimentalnom adijabatskom ložištu.
AB  - Even though biomass combustion is promoted from the standpoint of environmental protection due to significantly lower emissions in comparison to combustion of the predominate domestic fossil fuel –coal, combustion experiments with several types of biomass showed that the combustion emits a certain amount of pollutants which needs to be controlled. Emissions of nitrogen oxides (NOx) is one of the biggest challenges in this regard. Knowing and controlling the emissions of these oxides during the combustion ofbiomass is required for correct establishment of legal norms in terms of the emis-sions limits and to develop better technologies for combustion of these fuels. In that sense, the paper gives a description of the new experimental apparatus, which aims to explore an effective way to re-duce NOx in the exhaust gas, using the secondary denitrification methods. The calculation of the main combustion parameters in the experimental adiabatic furnace are also given here
PB  - Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS) : Društvo za procesnu tehniku
C3  - 30. Međunarodni kongres o procesnoj industriji - PROCESING ′17 : zbornik radova
T1  - Eksperimentalna aparatura za simulaciju sagorevanja biomase i kontrolu azotnih oksida
T1  - Experimental apparatus for simulation of biomass combustion and control of nitrogen oxide
SP  - 175
EP  - 182
DO  - 10.24094/ptk.017.30.1.175
ER  - 

@conference{
author = "Mladenović, Milica and Marinković, Ana and Paprika, Milijana and Repić, Branislav",
year = "2017",
abstract = "Iako se sagorevanje biomase promoviše sa stanovišta očuvanja životne sredine zbog značajno manje emisije štetnih gasova nego pri sagorevanju najzastupljenijeg domaćeg fosilnog goriva-uglja, eksperimenti sagorevanja više tipova biomase su pokazali da se i ovim sagorevanjem emituje izvesna količina polutanata koju je potrebno kontrolisati. Emisija azotnih oksida (NOx) je jedan od najvećih izazova u tom pogledu. Poznavanje i kontrolisanje emisije ovih oksida prilikom sagorevanja biomase je neophodno radi uspostavljanja korektnih zakonskih normi u pogledu granične emisije i za razvoj što kvalitetnijih tehnologija za sagorevanje ove vrste goriva. U tom cilju u radu je dat opis eksperimentalne aparature, koja ima za cilj da ispita efikasan način za redukciju NOx-a u dimnim gasovima upotrebom sekundarnih mera denitrifikacije. Takođe su dati i termički proračuni parametara sagorevanja u eksperimentalnom adijabatskom ložištu., Even though biomass combustion is promoted from the standpoint of environmental protection due to significantly lower emissions in comparison to combustion of the predominate domestic fossil fuel –coal, combustion experiments with several types of biomass showed that the combustion emits a certain amount of pollutants which needs to be controlled. Emissions of nitrogen oxides (NOx) is one of the biggest challenges in this regard. Knowing and controlling the emissions of these oxides during the combustion ofbiomass is required for correct establishment of legal norms in terms of the emis-sions limits and to develop better technologies for combustion of these fuels. In that sense, the paper gives a description of the new experimental apparatus, which aims to explore an effective way to re-duce NOx in the exhaust gas, using the secondary denitrification methods. The calculation of the main combustion parameters in the experimental adiabatic furnace are also given here",
publisher = "Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS) : Društvo za procesnu tehniku",
journal = "30. Međunarodni kongres o procesnoj industriji - PROCESING ′17 : zbornik radova",
title = "Eksperimentalna aparatura za simulaciju sagorevanja biomase i kontrolu azotnih oksida, Experimental apparatus for simulation of biomass combustion and control of nitrogen oxide",
pages = "175-182",
doi = "10.24094/ptk.017.30.1.175"
}

Mladenović, M., Marinković, A., Paprika, M.,& Repić, B.. (2017). Eksperimentalna aparatura za simulaciju sagorevanja biomase i kontrolu azotnih oksida. in 30. Međunarodni kongres o procesnoj industriji - PROCESING ′17 : zbornik radova
Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS) : Društvo za procesnu tehniku., 175-182.
https://doi.org/10.24094/ptk.017.30.1.175

Mladenović M, Marinković A, Paprika M, Repić B. Eksperimentalna aparatura za simulaciju sagorevanja biomase i kontrolu azotnih oksida. in 30. Međunarodni kongres o procesnoj industriji - PROCESING ′17 : zbornik radova. 2017;:175-182.
doi:10.24094/ptk.017.30.1.175 .

Mladenović, Milica, Marinković, Ana, Paprika, Milijana, Repić, Branislav, "Eksperimentalna aparatura za simulaciju sagorevanja biomase i kontrolu azotnih oksida" in 30. Međunarodni kongres o procesnoj industriji - PROCESING ′17 : zbornik radova (2017):175-182,
https://doi.org/10.24094/ptk.017.30.1.175 . .

TY  - CONF
AU  - Nemoda, Stevan
AU  - Mladenović, Milica
AU  - Paprika, Milijana
AU  - Repić, Branislav
AU  - Marinković, Ana
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11601
AB  - U radu je predložen dvodimenzijski model numeričke simulacije sagorevanja tečnih goriva u flu-idizovanom sloju, koji se zasniva na dvo fluidnom Euler – Euler pristupom modeliranja fluidizovanog sloja uz određivanje polja brzina gasa i čestica u dvofaznim, granularnim tokovima zasnovane na ana-logiji sa kinetičkom teorijom gasova (KTGF). Sveobuhvatan model kompleksnih procesa u fluidizacio-noj komori sagorevanja podrazumeva, pored određivanja polja brzina gasne i čestične faze, inkorpori-ranje energetskih jednačina gasne i čestične faze, kao i transportnih jednačina hemijskih komponenti sa izvornim članovima usled konverzije komponenata. Brojni numerički eksperimenti pokazuju da je izbor koeficijenata u izrazima za sile trenja prilikom interakcije faza ima izuzetan značaj i mora se sprovesti za svaki, značajno različit režim fluidizacije, posebno. Urađene su serije numeričkih eksperi-menata sa simulacijom procesa sagorevanja u FS sa i bez značajnog sadržaja vode u gorivu. Proračuni su nestacionarni, a modelirani vremenski period odgovara vremenu za koje gas prođe kroz celu visinu reaktora. Numerički eksperimenti, na osnovu predloženog matematičkog modela, su takođe korišćeni za potrebe analize uticaja različitih snaga pri kojima radi reaktor, kao i različitih stepena fluidizacije, na efikasnost sagorevanja kao i na profile temperatura u zoni sagorevanja.
AB  - A comprehensive 2D numerical model of the bubbled fluidized bed with combustion of liquid fuelsis proposed in the paper. The proposed numerical model is based on the Eulerian–Eulerian granular flow modeling with the kinetic theory of granular flow. The model includes the following basic governing equations: the continuity equations of the solid andgas phase, the momentum conservation equations of the gas and solid phase, the energy equations of gas, and the solid phase and conservation equations for chemical components. The choice of the semi empirical constants of the inter-phase interaction drag force model is significant and these constants must be adjusted for each particular regime of fluidiza-tion. Presented numerical experiments primarily were applied to verification of the assumptions about the impact of water content in a liquid fuel on FB combustion intensity. The numerical experiments, based on the proposed mathematical model, also have been used for the purposes of analyzing the im-pacts of various reactor powers as well as fluidization numbers, on the combustion efficiency and on combustion zone temperature fields
PB  - Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS) : Društvo za procesnu tehniku
C3  - 30. Međunarodni kongres o procesnoj industriji - PROCESING ′17 : zbornik radova
T1  - 2D CFD numerička simulacija fluidizacione komore sagorevanja bazirane na Euler-Euler granularnom modelu
T1  - 2D fluidized combustion chamber cfd simulation based on Euler-Euler granular flow model
SP  - 277
EP  - 288
DO  - 10.24094//ptk.017.30.1.277
ER  - 

@conference{
author = "Nemoda, Stevan and Mladenović, Milica and Paprika, Milijana and Repić, Branislav and Marinković, Ana",
year = "2017",
abstract = "U radu je predložen dvodimenzijski model numeričke simulacije sagorevanja tečnih goriva u flu-idizovanom sloju, koji se zasniva na dvo fluidnom Euler – Euler pristupom modeliranja fluidizovanog sloja uz određivanje polja brzina gasa i čestica u dvofaznim, granularnim tokovima zasnovane na ana-logiji sa kinetičkom teorijom gasova (KTGF). Sveobuhvatan model kompleksnih procesa u fluidizacio-noj komori sagorevanja podrazumeva, pored određivanja polja brzina gasne i čestične faze, inkorpori-ranje energetskih jednačina gasne i čestične faze, kao i transportnih jednačina hemijskih komponenti sa izvornim članovima usled konverzije komponenata. Brojni numerički eksperimenti pokazuju da je izbor koeficijenata u izrazima za sile trenja prilikom interakcije faza ima izuzetan značaj i mora se sprovesti za svaki, značajno različit režim fluidizacije, posebno. Urađene su serije numeričkih eksperi-menata sa simulacijom procesa sagorevanja u FS sa i bez značajnog sadržaja vode u gorivu. Proračuni su nestacionarni, a modelirani vremenski period odgovara vremenu za koje gas prođe kroz celu visinu reaktora. Numerički eksperimenti, na osnovu predloženog matematičkog modela, su takođe korišćeni za potrebe analize uticaja različitih snaga pri kojima radi reaktor, kao i različitih stepena fluidizacije, na efikasnost sagorevanja kao i na profile temperatura u zoni sagorevanja., A comprehensive 2D numerical model of the bubbled fluidized bed with combustion of liquid fuelsis proposed in the paper. The proposed numerical model is based on the Eulerian–Eulerian granular flow modeling with the kinetic theory of granular flow. The model includes the following basic governing equations: the continuity equations of the solid andgas phase, the momentum conservation equations of the gas and solid phase, the energy equations of gas, and the solid phase and conservation equations for chemical components. The choice of the semi empirical constants of the inter-phase interaction drag force model is significant and these constants must be adjusted for each particular regime of fluidiza-tion. Presented numerical experiments primarily were applied to verification of the assumptions about the impact of water content in a liquid fuel on FB combustion intensity. The numerical experiments, based on the proposed mathematical model, also have been used for the purposes of analyzing the im-pacts of various reactor powers as well as fluidization numbers, on the combustion efficiency and on combustion zone temperature fields",
publisher = "Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS) : Društvo za procesnu tehniku",
journal = "30. Međunarodni kongres o procesnoj industriji - PROCESING ′17 : zbornik radova",
title = "2D CFD numerička simulacija fluidizacione komore sagorevanja bazirane na Euler-Euler granularnom modelu, 2D fluidized combustion chamber cfd simulation based on Euler-Euler granular flow model",
pages = "277-288",
doi = "10.24094//ptk.017.30.1.277"
}

Nemoda, S., Mladenović, M., Paprika, M., Repić, B.,& Marinković, A.. (2017). 2D CFD numerička simulacija fluidizacione komore sagorevanja bazirane na Euler-Euler granularnom modelu. in 30. Međunarodni kongres o procesnoj industriji - PROCESING ′17 : zbornik radova
Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS) : Društvo za procesnu tehniku., 277-288.
https://doi.org/10.24094//ptk.017.30.1.277

Nemoda S, Mladenović M, Paprika M, Repić B, Marinković A. 2D CFD numerička simulacija fluidizacione komore sagorevanja bazirane na Euler-Euler granularnom modelu. in 30. Međunarodni kongres o procesnoj industriji - PROCESING ′17 : zbornik radova. 2017;:277-288.
doi:10.24094//ptk.017.30.1.277 .

Nemoda, Stevan, Mladenović, Milica, Paprika, Milijana, Repić, Branislav, Marinković, Ana, "2D CFD numerička simulacija fluidizacione komore sagorevanja bazirane na Euler-Euler granularnom modelu" in 30. Međunarodni kongres o procesnoj industriji - PROCESING ′17 : zbornik radova (2017):277-288,
https://doi.org/10.24094//ptk.017.30.1.277 . .

TY  - CONF
AU  - Mladenović, Milica
AU  - Paprika, Milijana
AU  - Marinković, Ana
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11603
AB  - Usklađivanje potreba očuvanja životne sredine i rastućih energetskih potreba savremenog društva promoviše primenu biomase kao zamene za fosilna goriva i održivu opciju za ublažavanje emisije gasova staklene bašte. Poredniza prednosti upotrebe biomase u energetske svrhe, postoje i izvesni nedostaci, od kojih je i moguća relativno visoka emisija azotnih oksida, NOx prilikom sagorevanje ove vrste goriva. U radu su predstavljene mere denitrifikacije pri sagorevanju biomase - primarne i sekundarne. Akcenat u radu je stavljen na sekundarne mere denitrifikacije.
AB  - Aligning the need to preserve the environment and the growing energy needs of modern society promotes the use of biomass as a replacement for fossil fuels and viable option to mitigate greenhouse gas emissions. Besides a number of advantages of using biomass for energy purposes, there are certain disadvantages, one of which is possible relatively high emissions of nitrogen oxides, NOx, during the combustion of these fuels. The paper presents the denitrification measures during combustion of biomass - primary and secondary. The emphasis in this paper is placed on the secondary denitrification measures.
PB  - Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS) : Društvo za procesnu tehniku
C3  - 29. Međunarodni kongres o procesnoj industriji - PROCESING ′16 : zbornik radova
T1  - Mere denitrifikacije pri sagorevanju biomase
T1  - Denitrification measures in biomass combustion
SP  - 173
EP  - 185
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11603
ER  - 

@conference{
author = "Mladenović, Milica and Paprika, Milijana and Marinković, Ana",
year = "2016",
abstract = "Usklađivanje potreba očuvanja životne sredine i rastućih energetskih potreba savremenog društva promoviše primenu biomase kao zamene za fosilna goriva i održivu opciju za ublažavanje emisije gasova staklene bašte. Poredniza prednosti upotrebe biomase u energetske svrhe, postoje i izvesni nedostaci, od kojih je i moguća relativno visoka emisija azotnih oksida, NOx prilikom sagorevanje ove vrste goriva. U radu su predstavljene mere denitrifikacije pri sagorevanju biomase - primarne i sekundarne. Akcenat u radu je stavljen na sekundarne mere denitrifikacije., Aligning the need to preserve the environment and the growing energy needs of modern society promotes the use of biomass as a replacement for fossil fuels and viable option to mitigate greenhouse gas emissions. Besides a number of advantages of using biomass for energy purposes, there are certain disadvantages, one of which is possible relatively high emissions of nitrogen oxides, NOx, during the combustion of these fuels. The paper presents the denitrification measures during combustion of biomass - primary and secondary. The emphasis in this paper is placed on the secondary denitrification measures.",
publisher = "Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS) : Društvo za procesnu tehniku",
journal = "29. Međunarodni kongres o procesnoj industriji - PROCESING ′16 : zbornik radova",
title = "Mere denitrifikacije pri sagorevanju biomase, Denitrification measures in biomass combustion",
pages = "173-185",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11603"
}

Mladenović, M., Paprika, M.,& Marinković, A.. (2016). Mere denitrifikacije pri sagorevanju biomase. in 29. Međunarodni kongres o procesnoj industriji - PROCESING ′16 : zbornik radova
Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS) : Društvo za procesnu tehniku., 173-185.
https://hdl.handle.net/21.15107/rcub_vinar_11603

Mladenović M, Paprika M, Marinković A. Mere denitrifikacije pri sagorevanju biomase. in 29. Međunarodni kongres o procesnoj industriji - PROCESING ′16 : zbornik radova. 2016;:173-185.
https://hdl.handle.net/21.15107/rcub_vinar_11603 .

Mladenović, Milica, Paprika, Milijana, Marinković, Ana, "Mere denitrifikacije pri sagorevanju biomase" in 29. Međunarodni kongres o procesnoj industriji - PROCESING ′16 : zbornik radova (2016):173-185,
https://hdl.handle.net/21.15107/rcub_vinar_11603 .

TY  - JOUR
AU  - Repić, Branislav
AU  - Dakić, Dragoljub V.
AU  - Erić, Aleksandar
AU  - Đurović, Dejan M.
AU  - Marinković, Ana D.
AU  - Nemoda, Stevan
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5857
AB  - Biomass is deemed to be the main source of renewable energy in Serbia. Over the past couple of years, considerable efforts have been made to develop a technology which would enable biomass bales of various sizes and shapes to be used for energy production. A hot water boiler with cigarette type of combustion was constructed and used in the experimental investigation of biomass combustion phenomena. During the experiments performed, numerous parameters were measured: flue gas temperature, water temperature at the boiler inlet and outlet, while O-2, CO2, CO, SO2, and NOx content in the flue gas was measured at the boiler outlet. Experiments were performed with biomass feed rate of 0.12 kg/s, mean boiler output of 1.56 MW and mean excess air coefficient of 2.1. During the steady state boiler operation, exhaust gas temperature was measured to be around 150-160 degrees C and obtained CO and NOx emission rates were found to be quite acceptable. In addition, combustion of biomass bales in cigar burners was modelled by the means of appropriate numerical simulation. A good agreement between experimental and numerical results was obtained. (C) 2013 Elsevier Ltd. All rights reserved.
T2  - Biomass and Bioenergy
T1  - Investigation of the cigar burner combustion system for baled biomass
VL  - 58
SP  - 10
EP  - 19
DO  - 10.1016/j.biombioe.2013.10.016
ER  - 

@article{
author = "Repić, Branislav and Dakić, Dragoljub V. and Erić, Aleksandar and Đurović, Dejan M. and Marinković, Ana D. and Nemoda, Stevan",
year = "2013",
abstract = "Biomass is deemed to be the main source of renewable energy in Serbia. Over the past couple of years, considerable efforts have been made to develop a technology which would enable biomass bales of various sizes and shapes to be used for energy production. A hot water boiler with cigarette type of combustion was constructed and used in the experimental investigation of biomass combustion phenomena. During the experiments performed, numerous parameters were measured: flue gas temperature, water temperature at the boiler inlet and outlet, while O-2, CO2, CO, SO2, and NOx content in the flue gas was measured at the boiler outlet. Experiments were performed with biomass feed rate of 0.12 kg/s, mean boiler output of 1.56 MW and mean excess air coefficient of 2.1. During the steady state boiler operation, exhaust gas temperature was measured to be around 150-160 degrees C and obtained CO and NOx emission rates were found to be quite acceptable. In addition, combustion of biomass bales in cigar burners was modelled by the means of appropriate numerical simulation. A good agreement between experimental and numerical results was obtained. (C) 2013 Elsevier Ltd. All rights reserved.",
journal = "Biomass and Bioenergy",
title = "Investigation of the cigar burner combustion system for baled biomass",
volume = "58",
pages = "10-19",
doi = "10.1016/j.biombioe.2013.10.016"
}

Repić, B., Dakić, D. V., Erić, A., Đurović, D. M., Marinković, A. D.,& Nemoda, S.. (2013). Investigation of the cigar burner combustion system for baled biomass. in Biomass and Bioenergy, 58, 10-19.
https://doi.org/10.1016/j.biombioe.2013.10.016

Repić B, Dakić DV, Erić A, Đurović DM, Marinković AD, Nemoda S. Investigation of the cigar burner combustion system for baled biomass. in Biomass and Bioenergy. 2013;58:10-19.
doi:10.1016/j.biombioe.2013.10.016 .

Repić, Branislav, Dakić, Dragoljub V., Erić, Aleksandar, Đurović, Dejan M., Marinković, Ana D., Nemoda, Stevan, "Investigation of the cigar burner combustion system for baled biomass" in Biomass and Bioenergy, 58 (2013):10-19,
https://doi.org/10.1016/j.biombioe.2013.10.016 . .

TY  - CONF
AU  - Repić, Branislav
AU  - Erić, Aleksandar
AU  - Đurović, Dejan R.
AU  - Marinković, Ana D.
AU  - Živković, Goran S.
PY  - 2012
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7154
AB  - Performed investigation of pulverized fuel combustion in swirl flows has shown that there are two important groups of influential parameters: fuel and burner characteristics. The most important conclusion of these investigations is that each type of fuel needs a defined burner for its combustion and concrete operating parameters for its optimal work. Optimal operating parameters can be determined only by performing the appropriate experiments. Selection of optimal swirl burner design is dependent on energy loss which is used for air transport through burner. Increasing of swirl intensity is convenient for fuel ignition and flame stability, but energy loss for air transport increases, too. Swirl economy is estimated using hydraulic resistance parameter which represents energy loss due to swirling. In the paper are presented the methods and experimental data of hydraulic resistance determination for three laboratory models of swirl burners for pulverized fuel combustion. In the tangential burner the swirling is accomplished by tangential inflow of secondary air and fuel/air mixture. Axial-blade burner of type 1 enables swirling by a set of 18 blades. Axial-blade burner of type 2 is with a central lead of gas and coaxial lead of fuel/air mixture, primary air and recirculating gases. In movable swirl block burner the secondary air swirling is enabled by 8 stationary and 8 movable blocks fixed at movable and stationary plate. (C) 2012 Published by Elsevier Ltd.
C3  - Procedia Engineering
T1  - Experimental determination of the swirl burner laboratory models hydraulic resistance
VL  - 42
SP  - 672
EP  - 682
DO  - 10.1016/j.proeng.2012.07.460
ER  - 

@conference{
author = "Repić, Branislav and Erić, Aleksandar and Đurović, Dejan R. and Marinković, Ana D. and Živković, Goran S.",
year = "2012",
abstract = "Performed investigation of pulverized fuel combustion in swirl flows has shown that there are two important groups of influential parameters: fuel and burner characteristics. The most important conclusion of these investigations is that each type of fuel needs a defined burner for its combustion and concrete operating parameters for its optimal work. Optimal operating parameters can be determined only by performing the appropriate experiments. Selection of optimal swirl burner design is dependent on energy loss which is used for air transport through burner. Increasing of swirl intensity is convenient for fuel ignition and flame stability, but energy loss for air transport increases, too. Swirl economy is estimated using hydraulic resistance parameter which represents energy loss due to swirling. In the paper are presented the methods and experimental data of hydraulic resistance determination for three laboratory models of swirl burners for pulverized fuel combustion. In the tangential burner the swirling is accomplished by tangential inflow of secondary air and fuel/air mixture. Axial-blade burner of type 1 enables swirling by a set of 18 blades. Axial-blade burner of type 2 is with a central lead of gas and coaxial lead of fuel/air mixture, primary air and recirculating gases. In movable swirl block burner the secondary air swirling is enabled by 8 stationary and 8 movable blocks fixed at movable and stationary plate. (C) 2012 Published by Elsevier Ltd.",
journal = "Procedia Engineering",
title = "Experimental determination of the swirl burner laboratory models hydraulic resistance",
volume = "42",
pages = "672-682",
doi = "10.1016/j.proeng.2012.07.460"
}

Repić, B., Erić, A., Đurović, D. R., Marinković, A. D.,& Živković, G. S.. (2012). Experimental determination of the swirl burner laboratory models hydraulic resistance. in Procedia Engineering, 42, 672-682.
https://doi.org/10.1016/j.proeng.2012.07.460

Repić B, Erić A, Đurović DR, Marinković AD, Živković GS. Experimental determination of the swirl burner laboratory models hydraulic resistance. in Procedia Engineering. 2012;42:672-682.
doi:10.1016/j.proeng.2012.07.460 .

Repić, Branislav, Erić, Aleksandar, Đurović, Dejan R., Marinković, Ana D., Živković, Goran S., "Experimental determination of the swirl burner laboratory models hydraulic resistance" in Procedia Engineering, 42 (2012):672-682,
https://doi.org/10.1016/j.proeng.2012.07.460 . .