TY  - JOUR
AU  - Bulat, Tanja
AU  - Zmejkoski, Danica
AU  - Marković, Zoran
AU  - Satzinger, Melissa
AU  - Kovač, Janez
AU  - Strobl, Birgit
AU  - Milivojević, Dušan
AU  - Todorović Marković, Biljana
PY  - 2024
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11831
AB  - Carbon quantum dots (CQDs) are well known as a promising therapeutic agent due to their excellent pro-oxidant, antioxidant, antibacterial and anticancer properties under visible light irradiation. This material is easy to produce by several bottom-up or top-down methods. In this study, we used citric acid as starting precursor to synthesize aqueous carbon quantum dots dispersion by pyrolysis at 210 ◦C. Atomic force microscopy and XPS analyses revealed that CQDs synthesized are quasi-spherical with typical diameter of 9 nm and lots of C–O and C––O functional groups distributed over the basal plane and edges of the dots. Here, we investigated the antiviral properties of CQDs against cytomegalovirus (CMV). The pre-treatment with CQDs upregulates interferonstimulated genes (ISG), resulting in better virus control. Cellular defence against cytomegalovirus of CQDs pre-treated cells is increased in a dose-dependent manner. Our results reveal high biocompatibility and potent in vitro antiviral properties of CQDs.
T2  - Materials Chemistry and Physics
T1  - Employing carbon quantum dots to combat cytomegalovirus
VL  - 311
SP  - 128495
DO  - 10.1016/j.matchemphys.2023.128495
ER  - 

@article{
author = "Bulat, Tanja and Zmejkoski, Danica and Marković, Zoran and Satzinger, Melissa and Kovač, Janez and Strobl, Birgit and Milivojević, Dušan and Todorović Marković, Biljana",
year = "2024",
abstract = "Carbon quantum dots (CQDs) are well known as a promising therapeutic agent due to their excellent pro-oxidant, antioxidant, antibacterial and anticancer properties under visible light irradiation. This material is easy to produce by several bottom-up or top-down methods. In this study, we used citric acid as starting precursor to synthesize aqueous carbon quantum dots dispersion by pyrolysis at 210 ◦C. Atomic force microscopy and XPS analyses revealed that CQDs synthesized are quasi-spherical with typical diameter of 9 nm and lots of C–O and C––O functional groups distributed over the basal plane and edges of the dots. Here, we investigated the antiviral properties of CQDs against cytomegalovirus (CMV). The pre-treatment with CQDs upregulates interferonstimulated genes (ISG), resulting in better virus control. Cellular defence against cytomegalovirus of CQDs pre-treated cells is increased in a dose-dependent manner. Our results reveal high biocompatibility and potent in vitro antiviral properties of CQDs.",
journal = "Materials Chemistry and Physics",
title = "Employing carbon quantum dots to combat cytomegalovirus",
volume = "311",
pages = "128495",
doi = "10.1016/j.matchemphys.2023.128495"
}

Bulat, T., Zmejkoski, D., Marković, Z., Satzinger, M., Kovač, J., Strobl, B., Milivojević, D.,& Todorović Marković, B.. (2024). Employing carbon quantum dots to combat cytomegalovirus. in Materials Chemistry and Physics, 311, 128495.
https://doi.org/10.1016/j.matchemphys.2023.128495

Bulat T, Zmejkoski D, Marković Z, Satzinger M, Kovač J, Strobl B, Milivojević D, Todorović Marković B. Employing carbon quantum dots to combat cytomegalovirus. in Materials Chemistry and Physics. 2024;311:128495.
doi:10.1016/j.matchemphys.2023.128495 .

Bulat, Tanja, Zmejkoski, Danica, Marković, Zoran, Satzinger, Melissa, Kovač, Janez, Strobl, Birgit, Milivojević, Dušan, Todorović Marković, Biljana, "Employing carbon quantum dots to combat cytomegalovirus" in Materials Chemistry and Physics, 311 (2024):128495,
https://doi.org/10.1016/j.matchemphys.2023.128495 . .

TY  - JOUR
AU  - Nikezić, Dušan P.
AU  - Radivojević, Dušan S.
AU  - Lazović, Ivan
AU  - Mirkov, Nikola S.
AU  - Marković, Zoran J.
PY  - 2024
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12988
AB  - In order to better predict the high aerosol concentrations associated with air pollution and climate change, a machine learning model was developed using transfer learning and the segmentation process of global satellite images. The main concept of transfer learning lies on convolutional neural networks and works by initializing the already trained model weights to better adapt the weights when the network is trained on a different dataset. The transfer learning technique was tested with the ResNet3D-101 model pre-trained from a 2D ImageNet dataset. This model has performed well for contrail detection to assess climate impact. Aerosol distributions can be monitored via satellite remote sensing. Satellites can monitor some aerosol optical properties like aerosol optical thickness. Aerosol optical thickness snapshots were the input dataset for the model and were obtained from NASA’s Terra-Modis satellite; the output images were segmented by comparing the pixel values with a threshold value of 0.8 for aerosol optical thickness. Hyperparameter optimization finds a tuple of hyperparameters that yields an optimal model that minimizes a predefined loss function on given independent data. The model structure was adjusted in order to improve the performance of the model by applying methods and hyperparameter optimization techniques such as grid search, batch size, threshold, and input length. According to the criteria defined by the authors, the distance domain criterion and time domain criterion, the developed model is capable of generating adequate data and finding patterns in the time domain. As observed from the comparison of relative coefficients for the criteria metrics proposed by the authors, ddc and dtc, the deep learning model based on ConvLSTM layers developed in our previous studies has better performance than the model developed in this study with transfer learning.
T2  - Mathematics
T1  - Transfer Learning with ResNet3D-101 for Global Prediction of High Aerosol Concentrations
VL  - 12
IS  - 6
SP  - 826
DO  - 10.3390/math12060826
ER  - 

@article{
author = "Nikezić, Dušan P. and Radivojević, Dušan S. and Lazović, Ivan and Mirkov, Nikola S. and Marković, Zoran J.",
year = "2024",
abstract = "In order to better predict the high aerosol concentrations associated with air pollution and climate change, a machine learning model was developed using transfer learning and the segmentation process of global satellite images. The main concept of transfer learning lies on convolutional neural networks and works by initializing the already trained model weights to better adapt the weights when the network is trained on a different dataset. The transfer learning technique was tested with the ResNet3D-101 model pre-trained from a 2D ImageNet dataset. This model has performed well for contrail detection to assess climate impact. Aerosol distributions can be monitored via satellite remote sensing. Satellites can monitor some aerosol optical properties like aerosol optical thickness. Aerosol optical thickness snapshots were the input dataset for the model and were obtained from NASA’s Terra-Modis satellite; the output images were segmented by comparing the pixel values with a threshold value of 0.8 for aerosol optical thickness. Hyperparameter optimization finds a tuple of hyperparameters that yields an optimal model that minimizes a predefined loss function on given independent data. The model structure was adjusted in order to improve the performance of the model by applying methods and hyperparameter optimization techniques such as grid search, batch size, threshold, and input length. According to the criteria defined by the authors, the distance domain criterion and time domain criterion, the developed model is capable of generating adequate data and finding patterns in the time domain. As observed from the comparison of relative coefficients for the criteria metrics proposed by the authors, ddc and dtc, the deep learning model based on ConvLSTM layers developed in our previous studies has better performance than the model developed in this study with transfer learning.",
journal = "Mathematics",
title = "Transfer Learning with ResNet3D-101 for Global Prediction of High Aerosol Concentrations",
volume = "12",
number = "6",
pages = "826",
doi = "10.3390/math12060826"
}

Nikezić, D. P., Radivojević, D. S., Lazović, I., Mirkov, N. S.,& Marković, Z. J.. (2024). Transfer Learning with ResNet3D-101 for Global Prediction of High Aerosol Concentrations. in Mathematics, 12(6), 826.
https://doi.org/10.3390/math12060826

Nikezić DP, Radivojević DS, Lazović I, Mirkov NS, Marković ZJ. Transfer Learning with ResNet3D-101 for Global Prediction of High Aerosol Concentrations. in Mathematics. 2024;12(6):826.
doi:10.3390/math12060826 .

Nikezić, Dušan P., Radivojević, Dušan S., Lazović, Ivan, Mirkov, Nikola S., Marković, Zoran J., "Transfer Learning with ResNet3D-101 for Global Prediction of High Aerosol Concentrations" in Mathematics, 12, no. 6 (2024):826,
https://doi.org/10.3390/math12060826 . .

TY  - CONF
AU  - Agatonović Jovin, Tatjana
AU  - Todorović Marković, Biljana
AU  - Marković, Zoran
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12312
AB  - Graphene quantum dots (GQDs) are class of nanoparticles exhibiting unique and tunable electronic, optical, chemical and structural properties owing to their small size and quantum confinement and edge effects. GQDs most prominent characteristics are high photoluminescence, photostability, excellent photobleaching resistance, low citotoxicity, good biocompatibility, exceptional electrochemical activity and physicochemical stability, making them suitable for a wide range of applications, from biosensing and fluorescence bioimaging usage, photodynamic therapy, to optoelectronic, susteanable agricultural and environmental applications. Using density functional theory (DFT) we demonstrate that the optical properties of the GQDs can be sensitively tuned by its size, shape, edge configuration, attached chemical functionalities.
PB  - Belgrade : Institute of Technical Sciences of SASA
C3  - 21st Young Researchers' Conference Materials Sciences and Engineering : program and the book of abstracts
T1  - Density functional theory calculation of the optical properties of graphene quantum dots
SP  - 37
EP  - 37
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12312
ER  - 

@conference{
author = "Agatonović Jovin, Tatjana and Todorović Marković, Biljana and Marković, Zoran",
year = "2023",
abstract = "Graphene quantum dots (GQDs) are class of nanoparticles exhibiting unique and tunable electronic, optical, chemical and structural properties owing to their small size and quantum confinement and edge effects. GQDs most prominent characteristics are high photoluminescence, photostability, excellent photobleaching resistance, low citotoxicity, good biocompatibility, exceptional electrochemical activity and physicochemical stability, making them suitable for a wide range of applications, from biosensing and fluorescence bioimaging usage, photodynamic therapy, to optoelectronic, susteanable agricultural and environmental applications. Using density functional theory (DFT) we demonstrate that the optical properties of the GQDs can be sensitively tuned by its size, shape, edge configuration, attached chemical functionalities.",
publisher = "Belgrade : Institute of Technical Sciences of SASA",
journal = "21st Young Researchers' Conference Materials Sciences and Engineering : program and the book of abstracts",
title = "Density functional theory calculation of the optical properties of graphene quantum dots",
pages = "37-37",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12312"
}

Agatonović Jovin, T., Todorović Marković, B.,& Marković, Z.. (2023). Density functional theory calculation of the optical properties of graphene quantum dots. in 21st Young Researchers' Conference Materials Sciences and Engineering : program and the book of abstracts
Belgrade : Institute of Technical Sciences of SASA., 37-37.
https://hdl.handle.net/21.15107/rcub_vinar_12312

Agatonović Jovin T, Todorović Marković B, Marković Z. Density functional theory calculation of the optical properties of graphene quantum dots. in 21st Young Researchers' Conference Materials Sciences and Engineering : program and the book of abstracts. 2023;:37-37.
https://hdl.handle.net/21.15107/rcub_vinar_12312 .

Agatonović Jovin, Tatjana, Todorović Marković, Biljana, Marković, Zoran, "Density functional theory calculation of the optical properties of graphene quantum dots" in 21st Young Researchers' Conference Materials Sciences and Engineering : program and the book of abstracts (2023):37-37,
https://hdl.handle.net/21.15107/rcub_vinar_12312 .

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  - CONF
AU  - Tasić, Jelena
AU  - Vidičević Novaković, Sašenka
AU  - Stanojević, Željka
AU  - Paunović, Verica
AU  - Petričević, Saša
AU  - Martinović, Tamara
AU  - Kravić-Stevović, Tamara
AU  - Ćirić, Darko
AU  - Marković, Zoran J.
AU  - Isaković, Aleksandra
AU  - Trajković, Vladimir
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11057
AB  - Background: Experimental autoimmune encephalomyelitis (EAE) is one of the most studied model of neuroinflammation, used to test immunomodulatory and antiinflammatory drugs. Graphene quantum dots (GQD) are oval graphite twodimensional sheets with a diameter <100 nm, one carbon atom thickness, with potential applications in biomedicine. Objective: To investigate the potential protective effect of GQD in EAE model. Methods: Female DA rats were immunized with spinal cord homogenate and Freund’s complete adjuvant. GQD treatment (10 mg/kg, ip) was administrated during the inductive, effector and both phases of a disease. MAP kinase (MAPK) and Akt activity in popliteal lymph nodes (PLN) and CNS was determined by western blot. Quantitative PCR and flow cytometry were used to examine the expression of proinflammatory cytokines and specific transcription factors while infiltration of GQD in cells/tissues was detected by transmission electron microscopy. GQD antiinflamatory/direct cytoprotective effect was analyzed on oligodendrocyte and neuron cell cultures by MTT assay. Data were analized by Mann Whitney test (p<0.05 was considered as statistical significant difference). Results: GQD administration, in all phases of EAE, significantly reduced clinical score of a disease. Clinical improvement correlates with increase in activity of ERK, p38 and Akt that is followed by reduction of Th1 cell response in PLN and infiltrated spinal coard T cells. Due to its capacity to infiltrate cells and tissues, GQD exhibits direct cytoprotective effect on CNS. Additionaly, GQD reduced the expression of proinflammatory cytokines in ConA stimulated lymphocytes. Conclusion: GQD alleviate EAE, through direct cytoprotective effect on CNS and inhibition of Th1 cell response.
PB  - Belgrade : Serbian Neuroscience Society
C3  - 8th Congress of Serbian neuroscience society with international participation : the book of abstracts; 31 May – 2 June; Belgrade
T1  - Graphene Quantum Dots show protective effect in animal model of neuroinflammation
SP  - 114
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11057
ER  - 

@conference{
author = "Tasić, Jelena and Vidičević Novaković, Sašenka and Stanojević, Željka and Paunović, Verica and Petričević, Saša and Martinović, Tamara and Kravić-Stevović, Tamara and Ćirić, Darko and Marković, Zoran J. and Isaković, Aleksandra and Trajković, Vladimir",
year = "2023",
abstract = "Background: Experimental autoimmune encephalomyelitis (EAE) is one of the most studied model of neuroinflammation, used to test immunomodulatory and antiinflammatory drugs. Graphene quantum dots (GQD) are oval graphite twodimensional sheets with a diameter <100 nm, one carbon atom thickness, with potential applications in biomedicine. Objective: To investigate the potential protective effect of GQD in EAE model. Methods: Female DA rats were immunized with spinal cord homogenate and Freund’s complete adjuvant. GQD treatment (10 mg/kg, ip) was administrated during the inductive, effector and both phases of a disease. MAP kinase (MAPK) and Akt activity in popliteal lymph nodes (PLN) and CNS was determined by western blot. Quantitative PCR and flow cytometry were used to examine the expression of proinflammatory cytokines and specific transcription factors while infiltration of GQD in cells/tissues was detected by transmission electron microscopy. GQD antiinflamatory/direct cytoprotective effect was analyzed on oligodendrocyte and neuron cell cultures by MTT assay. Data were analized by Mann Whitney test (p<0.05 was considered as statistical significant difference). Results: GQD administration, in all phases of EAE, significantly reduced clinical score of a disease. Clinical improvement correlates with increase in activity of ERK, p38 and Akt that is followed by reduction of Th1 cell response in PLN and infiltrated spinal coard T cells. Due to its capacity to infiltrate cells and tissues, GQD exhibits direct cytoprotective effect on CNS. Additionaly, GQD reduced the expression of proinflammatory cytokines in ConA stimulated lymphocytes. Conclusion: GQD alleviate EAE, through direct cytoprotective effect on CNS and inhibition of Th1 cell response.",
publisher = "Belgrade : Serbian Neuroscience Society",
journal = "8th Congress of Serbian neuroscience society with international participation : the book of abstracts; 31 May – 2 June; Belgrade",
title = "Graphene Quantum Dots show protective effect in animal model of neuroinflammation",
pages = "114",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11057"
}

Tasić, J., Vidičević Novaković, S., Stanojević, Ž., Paunović, V., Petričević, S., Martinović, T., Kravić-Stevović, T., Ćirić, D., Marković, Z. J., Isaković, A.,& Trajković, V.. (2023). Graphene Quantum Dots show protective effect in animal model of neuroinflammation. in 8th Congress of Serbian neuroscience society with international participation : the book of abstracts; 31 May – 2 June; Belgrade
Belgrade : Serbian Neuroscience Society., 114.
https://hdl.handle.net/21.15107/rcub_vinar_11057

Tasić J, Vidičević Novaković S, Stanojević Ž, Paunović V, Petričević S, Martinović T, Kravić-Stevović T, Ćirić D, Marković ZJ, Isaković A, Trajković V. Graphene Quantum Dots show protective effect in animal model of neuroinflammation. in 8th Congress of Serbian neuroscience society with international participation : the book of abstracts; 31 May – 2 June; Belgrade. 2023;:114.
https://hdl.handle.net/21.15107/rcub_vinar_11057 .

Tasić, Jelena, Vidičević Novaković, Sašenka, Stanojević, Željka, Paunović, Verica, Petričević, Saša, Martinović, Tamara, Kravić-Stevović, Tamara, Ćirić, Darko, Marković, Zoran J., Isaković, Aleksandra, Trajković, Vladimir, "Graphene Quantum Dots show protective effect in animal model of neuroinflammation" in 8th Congress of Serbian neuroscience society with international participation : the book of abstracts; 31 May – 2 June; Belgrade (2023):114,
https://hdl.handle.net/21.15107/rcub_vinar_11057 .

TY  - JOUR
AU  - Marković, Zoran
AU  - Erić, Milić
AU  - Stefanović, Predrag
AU  - Jovanović, Rastko
AU  - Lazović, Ivan
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11992
AB  - Homogeneity of the flue gas-flow through the chamber of an electrostatic precipitator is one of the basic influencing parameter on dedusting efficiency. This paper presents results of a multiobjective optimization study of the flue gas controlling devices of electrostatic precipitator of 324 MWe lignite fired Unit A4 of TPP "Nikola Tesla" in Serbia. The aim was to achieve better flow homogeneity in the cross-section of the precipitator compared to the original design. Additional constraints were to maintain the minimum as possible overall weight of the proposed design as well as pressure drop through the precipitator. Numerical simulations based on CFD were used to investigate dependence of the velocity distribution in the ducts and precipitator’s chamber with respect to the geometrical parameters of tested concepts of turning blades. A series of 22 detailed full-scale numerical models of the precipitator with different concepts of turning vanes designs were developed. Assessment of the flow field uniformity for each tested design was performed based on the analysis of several homogeneity parameters calculated for selected vertical cross-sections of the precipitator. After the reconstruction according to optimized design, results of measurements confirmed significant improvements of the velocity distribution in the vertical cross-sections of the precipitator, increase of dedusting efficiency and reduction of PM emission.
T2  - Thermal Science
T1  - Optimization of the flue gas-flow controlling devices of the electrostatic precipitator of unit A4 in TPP "Nikola Tesla"
VL  - 27
IS  - 5 Part A
SP  - 3591
EP  - 3606
DO  - 10.2298/TSCI220903024M
ER  - 

@article{
author = "Marković, Zoran and Erić, Milić and Stefanović, Predrag and Jovanović, Rastko and Lazović, Ivan",
year = "2023",
abstract = "Homogeneity of the flue gas-flow through the chamber of an electrostatic precipitator is one of the basic influencing parameter on dedusting efficiency. This paper presents results of a multiobjective optimization study of the flue gas controlling devices of electrostatic precipitator of 324 MWe lignite fired Unit A4 of TPP "Nikola Tesla" in Serbia. The aim was to achieve better flow homogeneity in the cross-section of the precipitator compared to the original design. Additional constraints were to maintain the minimum as possible overall weight of the proposed design as well as pressure drop through the precipitator. Numerical simulations based on CFD were used to investigate dependence of the velocity distribution in the ducts and precipitator’s chamber with respect to the geometrical parameters of tested concepts of turning blades. A series of 22 detailed full-scale numerical models of the precipitator with different concepts of turning vanes designs were developed. Assessment of the flow field uniformity for each tested design was performed based on the analysis of several homogeneity parameters calculated for selected vertical cross-sections of the precipitator. After the reconstruction according to optimized design, results of measurements confirmed significant improvements of the velocity distribution in the vertical cross-sections of the precipitator, increase of dedusting efficiency and reduction of PM emission.",
journal = "Thermal Science",
title = "Optimization of the flue gas-flow controlling devices of the electrostatic precipitator of unit A4 in TPP "Nikola Tesla"",
volume = "27",
number = "5 Part A",
pages = "3591-3606",
doi = "10.2298/TSCI220903024M"
}

Marković, Z., Erić, M., Stefanović, P., Jovanović, R.,& Lazović, I.. (2023). Optimization of the flue gas-flow controlling devices of the electrostatic precipitator of unit A4 in TPP "Nikola Tesla". in Thermal Science, 27(5 Part A), 3591-3606.
https://doi.org/10.2298/TSCI220903024M

Marković Z, Erić M, Stefanović P, Jovanović R, Lazović I. Optimization of the flue gas-flow controlling devices of the electrostatic precipitator of unit A4 in TPP "Nikola Tesla". in Thermal Science. 2023;27(5 Part A):3591-3606.
doi:10.2298/TSCI220903024M .

Marković, Zoran, Erić, Milić, Stefanović, Predrag, Jovanović, Rastko, Lazović, Ivan, "Optimization of the flue gas-flow controlling devices of the electrostatic precipitator of unit A4 in TPP "Nikola Tesla"" in Thermal Science, 27, no. 5 Part A (2023):3591-3606,
https://doi.org/10.2298/TSCI220903024M . .

TY  - CONF
AU  - Milićević, Aleksandar
AU  - Belošević, Srđan
AU  - Erić, Milić
AU  - Marković, Zoran
AU  - Tomanović, Ivan
AU  - Crnomarković, Nenad
AU  - Stojanović, Andrijana
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12766
AB  - Heating value is an important indicator for assessment of the coal quality. Machine learning models are powerful computational tools that allow for the analysis of various heat and mass transfer phenomena in energy systems. In this paper, Random forest model for determining the lower heating values of coal from the thermal power plant “Kolubara A” is developed based on proximate and ultimate fuel analysis. A database of the proximate and ultimate fuel analysis values and lower heating value of coal was created by experimental measurements in the accredited test laboratory of the Department of Thermal Engineering and Energy (“VINČA” Institute of Nuclear Sciences). The developed Random forest models, applied to a relatively small database, showed acceptable predictions for the lower heating value based on both the proximate analysis (RMSE = 0.22 MJ/kg and MAPE = 2.26%) and the ultimate analysis (RMSE = 0.64 MJ/kg and MAPE = 6.12%), with better accuracy achieved by the model whose input data consisted of the values of technical fuel analysis.
PB  - Belgrade : Society of Thermal Engineers of Serbia
C3  - International Conference Power Plants 2023 : Proceedings
T1  - Random forest model for determination of the lower heating value of TPP “Kolubara A” coal
SP  - 748
EP  - 752
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12766
ER  - 

@conference{
author = "Milićević, Aleksandar and Belošević, Srđan and Erić, Milić and Marković, Zoran and Tomanović, Ivan and Crnomarković, Nenad and Stojanović, Andrijana",
year = "2023",
abstract = "Heating value is an important indicator for assessment of the coal quality. Machine learning models are powerful computational tools that allow for the analysis of various heat and mass transfer phenomena in energy systems. In this paper, Random forest model for determining the lower heating values of coal from the thermal power plant “Kolubara A” is developed based on proximate and ultimate fuel analysis. A database of the proximate and ultimate fuel analysis values and lower heating value of coal was created by experimental measurements in the accredited test laboratory of the Department of Thermal Engineering and Energy (“VINČA” Institute of Nuclear Sciences). The developed Random forest models, applied to a relatively small database, showed acceptable predictions for the lower heating value based on both the proximate analysis (RMSE = 0.22 MJ/kg and MAPE = 2.26%) and the ultimate analysis (RMSE = 0.64 MJ/kg and MAPE = 6.12%), with better accuracy achieved by the model whose input data consisted of the values of technical fuel analysis.",
publisher = "Belgrade : Society of Thermal Engineers of Serbia",
journal = "International Conference Power Plants 2023 : Proceedings",
title = "Random forest model for determination of the lower heating value of TPP “Kolubara A” coal",
pages = "748-752",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12766"
}

Milićević, A., Belošević, S., Erić, M., Marković, Z., Tomanović, I., Crnomarković, N.,& Stojanović, A.. (2023). Random forest model for determination of the lower heating value of TPP “Kolubara A” coal. in International Conference Power Plants 2023 : Proceedings
Belgrade : Society of Thermal Engineers of Serbia., 748-752.
https://hdl.handle.net/21.15107/rcub_vinar_12766

Milićević A, Belošević S, Erić M, Marković Z, Tomanović I, Crnomarković N, Stojanović A. Random forest model for determination of the lower heating value of TPP “Kolubara A” coal. in International Conference Power Plants 2023 : Proceedings. 2023;:748-752.
https://hdl.handle.net/21.15107/rcub_vinar_12766 .

Milićević, Aleksandar, Belošević, Srđan, Erić, Milić, Marković, Zoran, Tomanović, Ivan, Crnomarković, Nenad, Stojanović, Andrijana, "Random forest model for determination of the lower heating value of TPP “Kolubara A” coal" in International Conference Power Plants 2023 : Proceedings (2023):748-752,
https://hdl.handle.net/21.15107/rcub_vinar_12766 .

TY  - JOUR
AU  - Janković, Nenad
AU  - Tadić, Julijana D.
AU  - Milović, Emilija
AU  - Marković, Zoran
AU  - Jeremić, Svetlana
AU  - Petronijević, Jelena
AU  - Joksimović, Nenad
AU  - Borović, Teona Teodora
AU  - Bukhari, Syed Nasir Abbas
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11100
AB  - Antioxidants have a significant contribution in the cell protection against free radicals which may induce oxidative stress, and permanently damage the cells causing different disorders such as tumors, degenerative diseases, and accelerated aging. Nowadays, a multi-functionalized heterocyclic framework plays an important role in drug development, and it is of great importance in organic synthesis and medicinal chemistry. Encouraged by the bioactivity of the pyrido-dipyrimidine scaffold and vanillin core, herein, we made an effort to thoroughly investigate the antioxidant potential of the vanillin-based pyrido-dipyrimidines A–E to reveal novel promising free radical inhibitors. The structural analysis and the antioxidant action of the investigated molecules were performed in silico by DFT calculations. Studied compounds were screened for their antioxidant capacity using in vitro ABTS and DPPH assays. All the investigated compounds showed remarkable antioxidant activity, especially derivative A exhibiting inhibition of free radicals at the IC50 value (ABTS and DPPH assay 0.1 mg ml−1 and 0.081 mg ml−1, respectively). Compound A has higher TEAC values implying its stronger antioxidant activity compared to a trolox standard. The applied calculation method and in vitro tests confirmed that compound A has a strong potential against free radicals and may be a novel candidate for application in antioxidant therapy.
T2  - RSC Advances
T1  - Investigation of the radical scavenging potential of vanillin-based pyrido-dipyrimidines: experimental and in silico approach
VL  - 13
IS  - 22
SP  - 15236
EP  - 15242
DO  - 10.1039/D3RA02469E
ER  - 

@article{
author = "Janković, Nenad and Tadić, Julijana D. and Milović, Emilija and Marković, Zoran and Jeremić, Svetlana and Petronijević, Jelena and Joksimović, Nenad and Borović, Teona Teodora and Bukhari, Syed Nasir Abbas",
year = "2023",
abstract = "Antioxidants have a significant contribution in the cell protection against free radicals which may induce oxidative stress, and permanently damage the cells causing different disorders such as tumors, degenerative diseases, and accelerated aging. Nowadays, a multi-functionalized heterocyclic framework plays an important role in drug development, and it is of great importance in organic synthesis and medicinal chemistry. Encouraged by the bioactivity of the pyrido-dipyrimidine scaffold and vanillin core, herein, we made an effort to thoroughly investigate the antioxidant potential of the vanillin-based pyrido-dipyrimidines A–E to reveal novel promising free radical inhibitors. The structural analysis and the antioxidant action of the investigated molecules were performed in silico by DFT calculations. Studied compounds were screened for their antioxidant capacity using in vitro ABTS and DPPH assays. All the investigated compounds showed remarkable antioxidant activity, especially derivative A exhibiting inhibition of free radicals at the IC50 value (ABTS and DPPH assay 0.1 mg ml−1 and 0.081 mg ml−1, respectively). Compound A has higher TEAC values implying its stronger antioxidant activity compared to a trolox standard. The applied calculation method and in vitro tests confirmed that compound A has a strong potential against free radicals and may be a novel candidate for application in antioxidant therapy.",
journal = "RSC Advances",
title = "Investigation of the radical scavenging potential of vanillin-based pyrido-dipyrimidines: experimental and in silico approach",
volume = "13",
number = "22",
pages = "15236-15242",
doi = "10.1039/D3RA02469E"
}

Janković, N., Tadić, J. D., Milović, E., Marković, Z., Jeremić, S., Petronijević, J., Joksimović, N., Borović, T. T.,& Bukhari, S. N. A.. (2023). Investigation of the radical scavenging potential of vanillin-based pyrido-dipyrimidines: experimental and in silico approach. in RSC Advances, 13(22), 15236-15242.
https://doi.org/10.1039/D3RA02469E

Janković N, Tadić JD, Milović E, Marković Z, Jeremić S, Petronijević J, Joksimović N, Borović TT, Bukhari SNA. Investigation of the radical scavenging potential of vanillin-based pyrido-dipyrimidines: experimental and in silico approach. in RSC Advances. 2023;13(22):15236-15242.
doi:10.1039/D3RA02469E .

Janković, Nenad, Tadić, Julijana D., Milović, Emilija, Marković, Zoran, Jeremić, Svetlana, Petronijević, Jelena, Joksimović, Nenad, Borović, Teona Teodora, Bukhari, Syed Nasir Abbas, "Investigation of the radical scavenging potential of vanillin-based pyrido-dipyrimidines: experimental and in silico approach" in RSC Advances, 13, no. 22 (2023):15236-15242,
https://doi.org/10.1039/D3RA02469E . .

Erić, M., Marković, Z. J., Lazović, I., Jovanović, R.,& Mladenović, M.. (2022). Unapređena aparatura za sušenje niskokvalitetnih uglјeva do ravnotežne vlažnosti u nepokretnom i fluidizivanom sloju. in Univerzitet u Beogradu : Institut za nuklearne nauke "Vinča" - Institut od nacionalnog značaja za Republiku Srbiju.
https://hdl.handle.net/21.15107/rcub_vinar_12525

Erić M, Marković ZJ, Lazović I, Jovanović R, Mladenović M. Unapređena aparatura za sušenje niskokvalitetnih uglјeva do ravnotežne vlažnosti u nepokretnom i fluidizivanom sloju. in Univerzitet u Beogradu : Institut za nuklearne nauke "Vinča" - Institut od nacionalnog značaja za Republiku Srbiju. 2022;.
https://hdl.handle.net/21.15107/rcub_vinar_12525 .

Erić, Milić, Marković, Zoran J., Lazović, Ivan, Jovanović, Rastko, Mladenović, Milica, "Unapređena aparatura za sušenje niskokvalitetnih uglјeva do ravnotežne vlažnosti u nepokretnom i fluidizivanom sloju" in Univerzitet u Beogradu : Institut za nuklearne nauke "Vinča" - Institut od nacionalnog značaja za Republiku Srbiju (2022),
https://hdl.handle.net/21.15107/rcub_vinar_12525 .

TY  - CONF
AU  - Marković, Zoran J.
AU  - Jovanović, Rastko
AU  - Erić, M.
AU  - Lazović, Ivan
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11000
PB  - Belgrade : University of Belgrade, Vinča Institute of Nuclear Sciences
C3  - WeBIOPATR 2021 : 8th WeBIOPATR Workshop & Conference: Particulate Matter: Research and Management : Abstracts of Keynote Invited Lectures and Contributed Papers; November 29 - December 1, 2021; Belgrade, Serbia
T1  - Numerical Simulation of Gas Flow Through Perforated Plates Inclined to the Main Flow
SP  - 82
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11000
ER  - 

@conference{
author = "Marković, Zoran J. and Jovanović, Rastko and Erić, M. and Lazović, Ivan",
year = "2021",
publisher = "Belgrade : University of Belgrade, Vinča Institute of Nuclear Sciences",
journal = "WeBIOPATR 2021 : 8th WeBIOPATR Workshop & Conference: Particulate Matter: Research and Management : Abstracts of Keynote Invited Lectures and Contributed Papers; November 29 - December 1, 2021; Belgrade, Serbia",
title = "Numerical Simulation of Gas Flow Through Perforated Plates Inclined to the Main Flow",
pages = "82",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11000"
}

Marković, Z. J., Jovanović, R., Erić, M.,& Lazović, I.. (2021). Numerical Simulation of Gas Flow Through Perforated Plates Inclined to the Main Flow. in WeBIOPATR 2021 : 8th WeBIOPATR Workshop & Conference: Particulate Matter: Research and Management : Abstracts of Keynote Invited Lectures and Contributed Papers; November 29 - December 1, 2021; Belgrade, Serbia
Belgrade : University of Belgrade, Vinča Institute of Nuclear Sciences., 82.
https://hdl.handle.net/21.15107/rcub_vinar_11000

Marković ZJ, Jovanović R, Erić M, Lazović I. Numerical Simulation of Gas Flow Through Perforated Plates Inclined to the Main Flow. in WeBIOPATR 2021 : 8th WeBIOPATR Workshop & Conference: Particulate Matter: Research and Management : Abstracts of Keynote Invited Lectures and Contributed Papers; November 29 - December 1, 2021; Belgrade, Serbia. 2021;:82.
https://hdl.handle.net/21.15107/rcub_vinar_11000 .

Marković, Zoran J., Jovanović, Rastko, Erić, M., Lazović, Ivan, "Numerical Simulation of Gas Flow Through Perforated Plates Inclined to the Main Flow" in WeBIOPATR 2021 : 8th WeBIOPATR Workshop & Conference: Particulate Matter: Research and Management : Abstracts of Keynote Invited Lectures and Contributed Papers; November 29 - December 1, 2021; Belgrade, Serbia (2021):82,
https://hdl.handle.net/21.15107/rcub_vinar_11000 .

TY  - JOUR
AU  - Stefanović, Predrag Lj.
AU  - Cvetinović, Dejan
AU  - Marković, Zoran J.
AU  - Erić, Milić D.
AU  - Oka, Simeon N.
AU  - Repić, Branislav
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8981
AB  - Paper presents short review of research problems, applied methods for solving problems and main results obtained by the researchers in Laboratory for Ther-mal Engineering and Energy (LTE) of the "Vinca" Institute of Nuclear Sciences, Belgrade, Serbia dealing with pulverized coal combustion processes and tech-nologies for reduction of pollutions problems at thermal power plants in a period since 2000. The presented results were published in numerous studies realized for different users, Ph. D., Masters, and Specialist thesis, in international and domestic scientific journals and monographs, presented at numerous internation-al and domestic scientific conferences, etc. Presented research projects and re-sults of applied research projects realized at pulverized coal combustion thermal power plants clearly show that LTE team was involved in key activities of reha-bilitation and modernization, including implementation of best available technol-ogies for pollution reduction at thermal power plants, in the region of South East Europe.
T2  - Thermal Science
T1  - Review of the investigations of pulverized coal combustion processes in large power plants in laboratory for thermal engineering and energy: Part B
VL  - 23
IS  - Suppl. 5
SP  - 1611
EP  - 1626
DO  - 10.2298/TSCI19S5611R
ER  - 

@article{
author = "Stefanović, Predrag Lj. and Cvetinović, Dejan and Marković, Zoran J. and Erić, Milić D. and Oka, Simeon N. and Repić, Branislav",
year = "2019",
abstract = "Paper presents short review of research problems, applied methods for solving problems and main results obtained by the researchers in Laboratory for Ther-mal Engineering and Energy (LTE) of the "Vinca" Institute of Nuclear Sciences, Belgrade, Serbia dealing with pulverized coal combustion processes and tech-nologies for reduction of pollutions problems at thermal power plants in a period since 2000. The presented results were published in numerous studies realized for different users, Ph. D., Masters, and Specialist thesis, in international and domestic scientific journals and monographs, presented at numerous internation-al and domestic scientific conferences, etc. Presented research projects and re-sults of applied research projects realized at pulverized coal combustion thermal power plants clearly show that LTE team was involved in key activities of reha-bilitation and modernization, including implementation of best available technol-ogies for pollution reduction at thermal power plants, in the region of South East Europe.",
journal = "Thermal Science",
title = "Review of the investigations of pulverized coal combustion processes in large power plants in laboratory for thermal engineering and energy: Part B",
volume = "23",
number = "Suppl. 5",
pages = "1611-1626",
doi = "10.2298/TSCI19S5611R"
}

Stefanović, P. Lj., Cvetinović, D., Marković, Z. J., Erić, M. D., Oka, S. N.,& Repić, B.. (2019). Review of the investigations of pulverized coal combustion processes in large power plants in laboratory for thermal engineering and energy: Part B. in Thermal Science, 23(Suppl. 5), 1611-1626.
https://doi.org/10.2298/TSCI19S5611R

Stefanović PL, Cvetinović D, Marković ZJ, Erić MD, Oka SN, Repić B. Review of the investigations of pulverized coal combustion processes in large power plants in laboratory for thermal engineering and energy: Part B. in Thermal Science. 2019;23(Suppl. 5):1611-1626.
doi:10.2298/TSCI19S5611R .

Stefanović, Predrag Lj., Cvetinović, Dejan, Marković, Zoran J., Erić, Milić D., Oka, Simeon N., Repić, Branislav, "Review of the investigations of pulverized coal combustion processes in large power plants in laboratory for thermal engineering and energy: Part B" in Thermal Science, 23, no. Suppl. 5 (2019):1611-1626,
https://doi.org/10.2298/TSCI19S5611R . .

TY  - JOUR
AU  - Stefanović, Predrag Lj.
AU  - Živković, Nikola V.
AU  - Stojiljković, Dragoslava
AU  - Jovanović, Vladimir
AU  - Erić, Milić D.
AU  - Marković, Zoran J.
AU  - Cvetinović, Dejan
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8987
AB  - The anthropogenic emission of GHG especially CO has to be limited and reduced due to 2 their impact on global warming and climate change. Combustion of fossil fuels in the energy sector has a dominant share in total GHG emissions. In order to reduce GHG emission, European Union established a scheme for GHG allowance trading within the community, and the implementation of the European Union emission trading scheme, which is a key to GHG reduction in a cost-effective way. An important part of emission trading scheme is prescribed methodology for monitoring, reporting, and verification of the emission of GHG including characterization of the local fuels combusted by the energy sector. This paper presents lignite characteristics from open-pit mine Borovica- Pljevlja, which has highest coal production in Montenegro (>1.2 Mt per year), including evaluation of its carbon emission factor based on the laboratory analysis of 72 coal samples. Testing of the samples included proximate and ultimate analysis, as well as, net calorific value determination. In accordance with the obtained results, linear correlations between net calorific value and combustible matter content, carbon content and combustible matter content, hydrogen content and combustible matter content, carbon content and net calorific value, were established. Finally, the non-linear analytical correlation between carbon emission factor and net calorific value for Pljevlja lignite was proposed, as a base for the precise calculation of CO emission evaluation.
T2  - Thermal Science
T1  - Pljevlja lignite carbon emission characteristics
VL  - 23
IS  - Suppl. 5
SP  - 1523
EP  - 1531
DO  - 10.2298/TSCI180726288S
ER  - 

@article{
author = "Stefanović, Predrag Lj. and Živković, Nikola V. and Stojiljković, Dragoslava and Jovanović, Vladimir and Erić, Milić D. and Marković, Zoran J. and Cvetinović, Dejan",
year = "2019",
abstract = "The anthropogenic emission of GHG especially CO has to be limited and reduced due to 2 their impact on global warming and climate change. Combustion of fossil fuels in the energy sector has a dominant share in total GHG emissions. In order to reduce GHG emission, European Union established a scheme for GHG allowance trading within the community, and the implementation of the European Union emission trading scheme, which is a key to GHG reduction in a cost-effective way. An important part of emission trading scheme is prescribed methodology for monitoring, reporting, and verification of the emission of GHG including characterization of the local fuels combusted by the energy sector. This paper presents lignite characteristics from open-pit mine Borovica- Pljevlja, which has highest coal production in Montenegro (>1.2 Mt per year), including evaluation of its carbon emission factor based on the laboratory analysis of 72 coal samples. Testing of the samples included proximate and ultimate analysis, as well as, net calorific value determination. In accordance with the obtained results, linear correlations between net calorific value and combustible matter content, carbon content and combustible matter content, hydrogen content and combustible matter content, carbon content and net calorific value, were established. Finally, the non-linear analytical correlation between carbon emission factor and net calorific value for Pljevlja lignite was proposed, as a base for the precise calculation of CO emission evaluation.",
journal = "Thermal Science",
title = "Pljevlja lignite carbon emission characteristics",
volume = "23",
number = "Suppl. 5",
pages = "1523-1531",
doi = "10.2298/TSCI180726288S"
}

Stefanović, P. Lj., Živković, N. V., Stojiljković, D., Jovanović, V., Erić, M. D., Marković, Z. J.,& Cvetinović, D.. (2019). Pljevlja lignite carbon emission characteristics. in Thermal Science, 23(Suppl. 5), 1523-1531.
https://doi.org/10.2298/TSCI180726288S

Stefanović PL, Živković NV, Stojiljković D, Jovanović V, Erić MD, Marković ZJ, Cvetinović D. Pljevlja lignite carbon emission characteristics. in Thermal Science. 2019;23(Suppl. 5):1523-1531.
doi:10.2298/TSCI180726288S .

Stefanović, Predrag Lj., Živković, Nikola V., Stojiljković, Dragoslava, Jovanović, Vladimir, Erić, Milić D., Marković, Zoran J., Cvetinović, Dejan, "Pljevlja lignite carbon emission characteristics" in Thermal Science, 23, no. Suppl. 5 (2019):1523-1531,
https://doi.org/10.2298/TSCI180726288S . .

TY  - CONF
AU  - Marković, Zoran J.
AU  - Erić, Milić D.
AU  - Stefanović, Predrag Lj.
AU  - Cvetinović, Dejan
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12786
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  - Problem of Gas Distribution in Electrostatic Precipitators of Unit A4 in TPP Nikola Tesla
SP  - 470
EP  - 485
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12786
ER  - 

@conference{
author = "Marković, Zoran J. and Erić, Milić D. and Stefanović, Predrag Lj. and Cvetinović, Dejan",
year = "2019",
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 = "Problem of Gas Distribution in Electrostatic Precipitators of Unit A4 in TPP Nikola Tesla",
pages = "470-485",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12786"
}

Marković, Z. J., Erić, M. D., Stefanović, P. Lj.,& Cvetinović, D.. (2019). Problem of Gas Distribution in Electrostatic Precipitators of Unit A4 in TPP Nikola Tesla. 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., 470-485.
https://hdl.handle.net/21.15107/rcub_vinar_12786

Marković ZJ, Erić MD, Stefanović PL, Cvetinović D. Problem of Gas Distribution in Electrostatic Precipitators of Unit A4 in TPP Nikola Tesla. in 19th Conference on Thermal Science and Engineering of Serbia with the accompanying exhibition of equipment and achievements : Proceedings. 2019;:470-485.
https://hdl.handle.net/21.15107/rcub_vinar_12786 .

Marković, Zoran J., Erić, Milić D., Stefanović, Predrag Lj., Cvetinović, Dejan, "Problem of Gas Distribution in Electrostatic Precipitators of Unit A4 in TPP Nikola Tesla" in 19th Conference on Thermal Science and Engineering of Serbia with the accompanying exhibition of equipment and achievements : Proceedings (2019):470-485,
https://hdl.handle.net/21.15107/rcub_vinar_12786 .

TY  - JOUR
AU  - Erić, Milić
AU  - Stefanović, Predrag Lj.
AU  - Marković, Zoran J.
AU  - Jovanović, Rastko D.
AU  - Lazović, Ivan
AU  - Živković, Nikola V.
AU  - Ilić, Željko
PY  - 2018
UR  - http://www.doiserbia.nb.rs/Article.aspx?ID=0354-983618623E
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8030
AB  - The electrostatic precipitator system of the lignite fired 350 MWe unit B1 of Thermal Power Plant Kostolac B has been modernized during 2014. The results of complex in site measurements, performed in the frame of performance control test at the beginning of the exploitation period of the upgraded electrostatic pre-cipitator proved that, under normal and guarantee working conditions of the boiler and precipitator, the emission of particulate matter do not exceed limiting value. After the period of precipitator further adjustments, five series of meas-urements in the frame of acceptance test were performed in accordance with rel-evant standards. This paper presents results of the investigation of particulate matter concentration, laboratory analysis of the lignite, fly and bottom ash sam-ples, working parameters of the unit and upgraded electrostatic precipitator as well as results of the calculations. The averaged mean particulate concentration at the exit of upgraded electrostatic precipitator of the unit B1 during Acceptance test was below guaranteed value. It is confirmed that adjustments of electrostatic precipitator electrical parameters have improved electrostatic precipitator effi-ciency, as well that electrostatic precipitatorcould work highly efficiently in en-ergy save mode with lower power consumption. © 2018 Society of Thermal Engineers of Serbia.
T2  - Thermal Science
T1  - Results of the modernization of the electrostatic precipitator at unit B1 of the Thermal Power Plant Kostolac B
VL  - 22
IS  - Suppl. 5
SP  - 1623
EP  - 1634
DO  - 10.2298/TSCI18S5623E
ER  - 

@article{
author = "Erić, Milić and Stefanović, Predrag Lj. and Marković, Zoran J. and Jovanović, Rastko D. and Lazović, Ivan and Živković, Nikola V. and Ilić, Željko",
year = "2018",
abstract = "The electrostatic precipitator system of the lignite fired 350 MWe unit B1 of Thermal Power Plant Kostolac B has been modernized during 2014. The results of complex in site measurements, performed in the frame of performance control test at the beginning of the exploitation period of the upgraded electrostatic pre-cipitator proved that, under normal and guarantee working conditions of the boiler and precipitator, the emission of particulate matter do not exceed limiting value. After the period of precipitator further adjustments, five series of meas-urements in the frame of acceptance test were performed in accordance with rel-evant standards. This paper presents results of the investigation of particulate matter concentration, laboratory analysis of the lignite, fly and bottom ash sam-ples, working parameters of the unit and upgraded electrostatic precipitator as well as results of the calculations. The averaged mean particulate concentration at the exit of upgraded electrostatic precipitator of the unit B1 during Acceptance test was below guaranteed value. It is confirmed that adjustments of electrostatic precipitator electrical parameters have improved electrostatic precipitator effi-ciency, as well that electrostatic precipitatorcould work highly efficiently in en-ergy save mode with lower power consumption. © 2018 Society of Thermal Engineers of Serbia.",
journal = "Thermal Science",
title = "Results of the modernization of the electrostatic precipitator at unit B1 of the Thermal Power Plant Kostolac B",
volume = "22",
number = "Suppl. 5",
pages = "1623-1634",
doi = "10.2298/TSCI18S5623E"
}

Erić, M., Stefanović, P. Lj., Marković, Z. J., Jovanović, R. D., Lazović, I., Živković, N. V.,& Ilić, Ž.. (2018). Results of the modernization of the electrostatic precipitator at unit B1 of the Thermal Power Plant Kostolac B. in Thermal Science, 22(Suppl. 5), 1623-1634.
https://doi.org/10.2298/TSCI18S5623E

Erić M, Stefanović PL, Marković ZJ, Jovanović RD, Lazović I, Živković NV, Ilić Ž. Results of the modernization of the electrostatic precipitator at unit B1 of the Thermal Power Plant Kostolac B. in Thermal Science. 2018;22(Suppl. 5):1623-1634.
doi:10.2298/TSCI18S5623E .

Erić, Milić, Stefanović, Predrag Lj., Marković, Zoran J., Jovanović, Rastko D., Lazović, Ivan, Živković, Nikola V., Ilić, Željko, "Results of the modernization of the electrostatic precipitator at unit B1 of the Thermal Power Plant Kostolac B" in Thermal Science, 22, no. Suppl. 5 (2018):1623-1634,
https://doi.org/10.2298/TSCI18S5623E . .

TY  - JOUR
AU  - Jovanović, Rastko D.
AU  - Cvetinović, Dejan
AU  - Stefanović, Predrag Lj.
AU  - Škobalj, Predrag D.
AU  - Marković, Zoran J.
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1145
AB  - New system for start-up and flame support based on coal gasification by low temperature air thermal plasma is planned to supplement current heavy oil system in Serbian thermal power plants in order to decrease air pollutions emission and operational costs. Locally introduced plasma thermal energy heats up and ignites entrained coal particles, thus starting chain process which releases heat energy from gasified coal particles inside burner channel. Important stages during particle combustion, such as particle devolatilisation and char combustion, are described with satisfying accuracy in existing commercial computer fluid dynamics codes that are extensively used as powerful tool for pulverized coal combustion and gasification modeling. However, during plasma coal gasification, high plasma temperature induces strong thermal stresses inside interacting coal particles. These stresses lead to thermal shock and extensive particle fragmentation during which coal particles with initial size of 50-100 mu m disintegrate into fragments of at most 5-10 mu m. This intensifies volatile release by a factor 3-4 and substantially accelerates the oxidation of combustible matter. Particle fragmentation, due to its small size and thus limited influence on combustion process is commonly neglected in modelling. The main focus of this work is to suggest novel approach to pulverized coal gasification under high temperature conditions and to implement it into commercial comprehensive code ANSYS FLUENT 14.0. Proposed model was validated against experimental data obtained in newly built pilot scale direct current plasma burner test facility. Newly developed model showed very good agreement with experimental results with relative error less than 10%, while the standard built-in gasification model had error up to 25%.
T2  - Thermal Science
T1  - Novel Fragmentation Model for Pulverized Coal Particles Gasification in Low Temperature Air Thermal Plasma
VL  - 20
SP  - S207
EP  - S221
DO  - 10.2298/TSCI151222015J
ER  - 

@article{
author = "Jovanović, Rastko D. and Cvetinović, Dejan and Stefanović, Predrag Lj. and Škobalj, Predrag D. and Marković, Zoran J.",
year = "2016",
abstract = "New system for start-up and flame support based on coal gasification by low temperature air thermal plasma is planned to supplement current heavy oil system in Serbian thermal power plants in order to decrease air pollutions emission and operational costs. Locally introduced plasma thermal energy heats up and ignites entrained coal particles, thus starting chain process which releases heat energy from gasified coal particles inside burner channel. Important stages during particle combustion, such as particle devolatilisation and char combustion, are described with satisfying accuracy in existing commercial computer fluid dynamics codes that are extensively used as powerful tool for pulverized coal combustion and gasification modeling. However, during plasma coal gasification, high plasma temperature induces strong thermal stresses inside interacting coal particles. These stresses lead to thermal shock and extensive particle fragmentation during which coal particles with initial size of 50-100 mu m disintegrate into fragments of at most 5-10 mu m. This intensifies volatile release by a factor 3-4 and substantially accelerates the oxidation of combustible matter. Particle fragmentation, due to its small size and thus limited influence on combustion process is commonly neglected in modelling. The main focus of this work is to suggest novel approach to pulverized coal gasification under high temperature conditions and to implement it into commercial comprehensive code ANSYS FLUENT 14.0. Proposed model was validated against experimental data obtained in newly built pilot scale direct current plasma burner test facility. Newly developed model showed very good agreement with experimental results with relative error less than 10%, while the standard built-in gasification model had error up to 25%.",
journal = "Thermal Science",
title = "Novel Fragmentation Model for Pulverized Coal Particles Gasification in Low Temperature Air Thermal Plasma",
volume = "20",
pages = "S207-S221",
doi = "10.2298/TSCI151222015J"
}

Jovanović, R. D., Cvetinović, D., Stefanović, P. Lj., Škobalj, P. D.,& Marković, Z. J.. (2016). Novel Fragmentation Model for Pulverized Coal Particles Gasification in Low Temperature Air Thermal Plasma. in Thermal Science, 20, S207-S221.
https://doi.org/10.2298/TSCI151222015J

Jovanović RD, Cvetinović D, Stefanović PL, Škobalj PD, Marković ZJ. Novel Fragmentation Model for Pulverized Coal Particles Gasification in Low Temperature Air Thermal Plasma. in Thermal Science. 2016;20:S207-S221.
doi:10.2298/TSCI151222015J .

Jovanović, Rastko D., Cvetinović, Dejan, Stefanović, Predrag Lj., Škobalj, Predrag D., Marković, Zoran J., "Novel Fragmentation Model for Pulverized Coal Particles Gasification in Low Temperature Air Thermal Plasma" in Thermal Science, 20 (2016):S207-S221,
https://doi.org/10.2298/TSCI151222015J . .

TY  - JOUR
AU  - Marković, Zoran J.
AU  - Stupar, Slobodan N.
AU  - Dinulovic, Mirko R.
AU  - Pekovic, Ognjen M.
AU  - Stefanović, Predrag Lj.
AU  - Cvetinović, Dejan
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1147
AB  - A fuzzy approximation concept is applied in order to predict results of coupled computational structure mechanics and computational fluid dynamics while solving a problem of steady incompressible gas flow through thermally loaded rectangular thin-walled channel. Channel wall deforms into wave-type shapes depending on thermal load and fluid inlet velocity inducing the changes of fluid flow accordingly. A set of fluid-structure interaction numerical tests have been defined by varying the values of fluid inlet velocity, temperature of inner and outer surface of the channel wall, and numerical grid density. The unsteady Navier-Stokes equations are numerically solved using an element-based finite volume method and second order backward Euler discretization scheme. The structural model is solved by finite element method including geometric and material non-linearities. The implicit two-way iterative code coupling, partitioned solution approach, were used while solving these numerical tests. Results of numerical analysis indicate that gravity and pressure distribution inside the channel contributes to triggering the shape of deformation. In the inverse problem, the results of fluid-structure interaction numerical simulations formed a database of input variables for development fuzzy logic based models considering downstream pressure drop and maximum stresses as the objective functions. Developed fuzzy models predicted targeting results within a reasonable accuracy limit at lower computation cost compared to series of fluid-structure interaction numerical calculations. Smaller relative difference were obtained when calculating the values of pressure drop then maximal stresses indicating that transfer function influence on output values have to be additionally investigated.
T2  - Thermal Science
T1  - Assessment Results of Fluid-Structure Interaction Numerical Simulation Using Fuzzy Logic
VL  - 20
SP  - S235
EP  - S250
DO  - 10.2298/TSCI160111083M
ER  - 

@article{
author = "Marković, Zoran J. and Stupar, Slobodan N. and Dinulovic, Mirko R. and Pekovic, Ognjen M. and Stefanović, Predrag Lj. and Cvetinović, Dejan",
year = "2016",
abstract = "A fuzzy approximation concept is applied in order to predict results of coupled computational structure mechanics and computational fluid dynamics while solving a problem of steady incompressible gas flow through thermally loaded rectangular thin-walled channel. Channel wall deforms into wave-type shapes depending on thermal load and fluid inlet velocity inducing the changes of fluid flow accordingly. A set of fluid-structure interaction numerical tests have been defined by varying the values of fluid inlet velocity, temperature of inner and outer surface of the channel wall, and numerical grid density. The unsteady Navier-Stokes equations are numerically solved using an element-based finite volume method and second order backward Euler discretization scheme. The structural model is solved by finite element method including geometric and material non-linearities. The implicit two-way iterative code coupling, partitioned solution approach, were used while solving these numerical tests. Results of numerical analysis indicate that gravity and pressure distribution inside the channel contributes to triggering the shape of deformation. In the inverse problem, the results of fluid-structure interaction numerical simulations formed a database of input variables for development fuzzy logic based models considering downstream pressure drop and maximum stresses as the objective functions. Developed fuzzy models predicted targeting results within a reasonable accuracy limit at lower computation cost compared to series of fluid-structure interaction numerical calculations. Smaller relative difference were obtained when calculating the values of pressure drop then maximal stresses indicating that transfer function influence on output values have to be additionally investigated.",
journal = "Thermal Science",
title = "Assessment Results of Fluid-Structure Interaction Numerical Simulation Using Fuzzy Logic",
volume = "20",
pages = "S235-S250",
doi = "10.2298/TSCI160111083M"
}

Marković, Z. J., Stupar, S. N., Dinulovic, M. R., Pekovic, O. M., Stefanović, P. Lj.,& Cvetinović, D.. (2016). Assessment Results of Fluid-Structure Interaction Numerical Simulation Using Fuzzy Logic. in Thermal Science, 20, S235-S250.
https://doi.org/10.2298/TSCI160111083M

Marković ZJ, Stupar SN, Dinulovic MR, Pekovic OM, Stefanović PL, Cvetinović D. Assessment Results of Fluid-Structure Interaction Numerical Simulation Using Fuzzy Logic. in Thermal Science. 2016;20:S235-S250.
doi:10.2298/TSCI160111083M .

Marković, Zoran J., Stupar, Slobodan N., Dinulovic, Mirko R., Pekovic, Ognjen M., Stefanović, Predrag Lj., Cvetinović, Dejan, "Assessment Results of Fluid-Structure Interaction Numerical Simulation Using Fuzzy Logic" in Thermal Science, 20 (2016):S235-S250,
https://doi.org/10.2298/TSCI160111083M . .

TY  - JOUR
AU  - Pezo, Milada L.
AU  - Bakić, Vukman
AU  - Marković, Zoran J.
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7137
AB  - The behavior of the mast is non-linear due to its slenderness and compliant guy-support system, having a tendency to lose stability and even crush suddenly. Wind load is one of the main factors affecting the stability of the structure of the mast. Structural assessment of the different mast configurations has been investigated in the past. Furthermore, European standards EN 1993-3-1:2006 and EN 1993-1-6:2007 already provides some guidelines about the basis of structural analysis of masts and towers. This paper presents the results of numerical simulations of a guyed mast exposed to wind action using finite element method. Structural analyses were performed for three different constant wind loads, modal analysis provides the values of natural frequency and mode shapes, while the stability analysis was performed for the first three buckling load factor values. The motivation for this study is to investigate the contribution of finite element method to structural analysis of a lattice structure such as guyed mast as an alternative and/or improvement to the literature and codes.
T2  - Thermal Science
T1  - Structural Analysis of Guyed Mast Exposed to Wind Action
VL  - 20
SP  - S1473
EP  - S1483
DO  - 10.2298/TSCI16S5473P
ER  - 

@article{
author = "Pezo, Milada L. and Bakić, Vukman and Marković, Zoran J.",
year = "2016",
abstract = "The behavior of the mast is non-linear due to its slenderness and compliant guy-support system, having a tendency to lose stability and even crush suddenly. Wind load is one of the main factors affecting the stability of the structure of the mast. Structural assessment of the different mast configurations has been investigated in the past. Furthermore, European standards EN 1993-3-1:2006 and EN 1993-1-6:2007 already provides some guidelines about the basis of structural analysis of masts and towers. This paper presents the results of numerical simulations of a guyed mast exposed to wind action using finite element method. Structural analyses were performed for three different constant wind loads, modal analysis provides the values of natural frequency and mode shapes, while the stability analysis was performed for the first three buckling load factor values. The motivation for this study is to investigate the contribution of finite element method to structural analysis of a lattice structure such as guyed mast as an alternative and/or improvement to the literature and codes.",
journal = "Thermal Science",
title = "Structural Analysis of Guyed Mast Exposed to Wind Action",
volume = "20",
pages = "S1473-S1483",
doi = "10.2298/TSCI16S5473P"
}

Pezo, M. L., Bakić, V.,& Marković, Z. J.. (2016). Structural Analysis of Guyed Mast Exposed to Wind Action. in Thermal Science, 20, S1473-S1483.
https://doi.org/10.2298/TSCI16S5473P

Pezo ML, Bakić V, Marković ZJ. Structural Analysis of Guyed Mast Exposed to Wind Action. in Thermal Science. 2016;20:S1473-S1483.
doi:10.2298/TSCI16S5473P .

Pezo, Milada L., Bakić, Vukman, Marković, Zoran J., "Structural Analysis of Guyed Mast Exposed to Wind Action" in Thermal Science, 20 (2016):S1473-S1483,
https://doi.org/10.2298/TSCI16S5473P . .

TY  - JOUR
AU  - Erić, Milić
AU  - Stefanović, Predrag
AU  - Marković, Zoran
AU  - Škobalj, Predrag
AU  - Cvetinović, Dejan
AU  - Jovanović, Rastko
AU  - Lazović, Ivan
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12111
AB  - U odgovarajuće propise domaćeg zakonodavstva uključeni su zahtevi iz međunarodnog dokumenta, Direktiva 2001/80/EC, koji se odnose na ograničenje emisije praškastih materija iz velikih termoenergetskih postrojenja. Shodno preuzetim obavezama, od 2005. godine započelo se sa rekonstrukcijama i modernizacijama elektrofilterskih postrojenja svih termoblokova u sastavu JP EPS. Na termoelektrani 'Nikola Tesla B' je tokom 2011. godine izvršena rekonstrukcija i modernizacija elektrofilterskog postrojenja bloka B2, dok je rekonstrukcija elektrofilterskog postrojenja bloka B1 obavljena tokom 2012. godine. Cilj obavljenih rekonstrukcija, finansiranih donacijama Evropske Unije, bio je da se emisija praškastih materija u dimnom gasu iz ovih blokova spusti na nivo ispod 50 mg/Nm3, za normalne uslove i pri garantovanim radnim uslovima kotla i elektrofilterskog postrojenja. U radu su prikazani rezultati merenja koncentracija praškastih materija u dimnom gasu iza elektrofiltera, obavljenih u skladu sa zahtevima međunarodnih standarda ISO 9096 i EN 13284-1 nakon rekonstrukcije elektrofilterskih postrojenja termoelektrane TENT B, kao i rezultati ispitivanja obavljenih nakon isteka perioda od godinu dana od završetka rekonstrukcija. Dobijeni rezultati potvrđuju da je izlazna koncentracija praškastih materija ispod garantovane vrednosti, čime je potvrđena uspešnosti izvedenih rekonstruktivnih zahvata.
AB  - The requirements of the international document Directive 2001/80/EC relating to limitation of the particulate matter emissions from large thermal power plants have been incorporated into relevant regulations of domestic legislation. In accordance with the commitments, since 2005 it was started with reconstruction and modernization of electrostatic precipitator system of all thermal units within the Electric Power Industry of Serbia. The reconstruction and modernization of electrostatic precipitator system of the unit B2 of thermal power plant 'Nikola Tesla B' was done during 2011, while the reconstruction of the electrostatic precipitator system of the unit B1 was conducted in 2012 year. One of the main objectives of performed reconstructions and modernizations, financed by donations of the European Union, was to decrease the emission of particulate matter in the flue gas from these units down to level below 50 mg/Nm3, in normal conditions and under guaranteed operating conditions of the boiler and electrostatic precipitator system. This paper presents results of the measurements of particulate matter concentration performed in accordance with standards ISO 9096 and EN 13284-1, immediately after the reconstruction and shortly before the end of the period of about 1 year after the reconstruction, as a part of control and guarantee investigations of the reconstructed electrostatic precipitators of Thermal Power Plant Nikola Tesla B units. In addition, this paper presents re sults of labosatory analysis of the coal samples taken during test, working parameters of the unit and upgraded electrostatic precipitator system during the tests as well as results of the calculations. The results of the measurements confirm that particulate matter concentration in the flue gas from reconstructed electrostatic precipitators fall down below guaranteed values, thus confirming the effectiveness of the reconstructive operations.
T2  - Termotehnika
T1  - Smanjenje emisije praškastih materija posle rekonstrukcije i modernizacije elektrofilterskih postrojenja na TE „Nikola Tesla B”
VL  - 42
IS  - 1-2
SP  - 73
EP  - 83
DO  - 10.5937/termoteh1601073E
ER  - 

@article{
author = "Erić, Milić and Stefanović, Predrag and Marković, Zoran and Škobalj, Predrag and Cvetinović, Dejan and Jovanović, Rastko and Lazović, Ivan",
year = "2016",
abstract = "U odgovarajuće propise domaćeg zakonodavstva uključeni su zahtevi iz međunarodnog dokumenta, Direktiva 2001/80/EC, koji se odnose na ograničenje emisije praškastih materija iz velikih termoenergetskih postrojenja. Shodno preuzetim obavezama, od 2005. godine započelo se sa rekonstrukcijama i modernizacijama elektrofilterskih postrojenja svih termoblokova u sastavu JP EPS. Na termoelektrani 'Nikola Tesla B' je tokom 2011. godine izvršena rekonstrukcija i modernizacija elektrofilterskog postrojenja bloka B2, dok je rekonstrukcija elektrofilterskog postrojenja bloka B1 obavljena tokom 2012. godine. Cilj obavljenih rekonstrukcija, finansiranih donacijama Evropske Unije, bio je da se emisija praškastih materija u dimnom gasu iz ovih blokova spusti na nivo ispod 50 mg/Nm3, za normalne uslove i pri garantovanim radnim uslovima kotla i elektrofilterskog postrojenja. U radu su prikazani rezultati merenja koncentracija praškastih materija u dimnom gasu iza elektrofiltera, obavljenih u skladu sa zahtevima međunarodnih standarda ISO 9096 i EN 13284-1 nakon rekonstrukcije elektrofilterskih postrojenja termoelektrane TENT B, kao i rezultati ispitivanja obavljenih nakon isteka perioda od godinu dana od završetka rekonstrukcija. Dobijeni rezultati potvrđuju da je izlazna koncentracija praškastih materija ispod garantovane vrednosti, čime je potvrđena uspešnosti izvedenih rekonstruktivnih zahvata., The requirements of the international document Directive 2001/80/EC relating to limitation of the particulate matter emissions from large thermal power plants have been incorporated into relevant regulations of domestic legislation. In accordance with the commitments, since 2005 it was started with reconstruction and modernization of electrostatic precipitator system of all thermal units within the Electric Power Industry of Serbia. The reconstruction and modernization of electrostatic precipitator system of the unit B2 of thermal power plant 'Nikola Tesla B' was done during 2011, while the reconstruction of the electrostatic precipitator system of the unit B1 was conducted in 2012 year. One of the main objectives of performed reconstructions and modernizations, financed by donations of the European Union, was to decrease the emission of particulate matter in the flue gas from these units down to level below 50 mg/Nm3, in normal conditions and under guaranteed operating conditions of the boiler and electrostatic precipitator system. This paper presents results of the measurements of particulate matter concentration performed in accordance with standards ISO 9096 and EN 13284-1, immediately after the reconstruction and shortly before the end of the period of about 1 year after the reconstruction, as a part of control and guarantee investigations of the reconstructed electrostatic precipitators of Thermal Power Plant Nikola Tesla B units. In addition, this paper presents re sults of labosatory analysis of the coal samples taken during test, working parameters of the unit and upgraded electrostatic precipitator system during the tests as well as results of the calculations. The results of the measurements confirm that particulate matter concentration in the flue gas from reconstructed electrostatic precipitators fall down below guaranteed values, thus confirming the effectiveness of the reconstructive operations.",
journal = "Termotehnika",
title = "Smanjenje emisije praškastih materija posle rekonstrukcije i modernizacije elektrofilterskih postrojenja na TE „Nikola Tesla B”",
volume = "42",
number = "1-2",
pages = "73-83",
doi = "10.5937/termoteh1601073E"
}

Erić, M., Stefanović, P., Marković, Z., Škobalj, P., Cvetinović, D., Jovanović, R.,& Lazović, I.. (2016). Smanjenje emisije praškastih materija posle rekonstrukcije i modernizacije elektrofilterskih postrojenja na TE „Nikola Tesla B”. in Termotehnika, 42(1-2), 73-83.
https://doi.org/10.5937/termoteh1601073E

Erić M, Stefanović P, Marković Z, Škobalj P, Cvetinović D, Jovanović R, Lazović I. Smanjenje emisije praškastih materija posle rekonstrukcije i modernizacije elektrofilterskih postrojenja na TE „Nikola Tesla B”. in Termotehnika. 2016;42(1-2):73-83.
doi:10.5937/termoteh1601073E .

Erić, Milić, Stefanović, Predrag, Marković, Zoran, Škobalj, Predrag, Cvetinović, Dejan, Jovanović, Rastko, Lazović, Ivan, "Smanjenje emisije praškastih materija posle rekonstrukcije i modernizacije elektrofilterskih postrojenja na TE „Nikola Tesla B”" in Termotehnika, 42, no. 1-2 (2016):73-83,
https://doi.org/10.5937/termoteh1601073E . .

TY  - JOUR
AU  - Jovanović, Rastko D.
AU  - Marek, Ewa
AU  - Maletić, Slobodan
AU  - Cvetinović, Dejan
AU  - Marković, Zoran J.
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7066
AB  - A descriptive model for isolated char particle combustion under conventional and oxy-fuel conditions was developed. Suggested model is based on the percolation theory and Monte Carlo simulation technique. Char particle was modeled as a square lattice consisting of a large number of small sites. Sites correspond either to fixed carbon, ash, or pore, and they were distributed randomly inside char lattice using percolation concept, at the start of simulation. Random walk model was used to represent gaseous species diffusion through particle pores. Char combustion was modeled using power law Arrhenius model which assumes that reaction rate depends of particle temperature and oxygen partial pressure on particle surface. The main aim of the proposed model was to take into account influence of heterogeneous char particle structure to randomness of the char combustion process. The suggested models behavior was validated by qualitative comparison with experimental data obtained in single particle reactor. It was found that simulated combustion time, char burnout and particle temperature values are in good agreement with experimentally determined data. Special emphasis was given to the CO2 gasification reaction influence on char conversion and particle temperature values. Further development of the proposed model with appropriate simplifications would enable its inclusion in comprehensive CFD codes. (C) 2015 Elsevier Ltd. All rights reserved.
T2  - Fuel
T1  - Lattice Monte Carlo simulation of single coal char particle combustion under oxy-fuel conditions
VL  - 151
SP  - 172
EP  - 181
DO  - 10.1016/j.fuel.2015.02.104
ER  - 

@article{
author = "Jovanović, Rastko D. and Marek, Ewa and Maletić, Slobodan and Cvetinović, Dejan and Marković, Zoran J.",
year = "2015",
abstract = "A descriptive model for isolated char particle combustion under conventional and oxy-fuel conditions was developed. Suggested model is based on the percolation theory and Monte Carlo simulation technique. Char particle was modeled as a square lattice consisting of a large number of small sites. Sites correspond either to fixed carbon, ash, or pore, and they were distributed randomly inside char lattice using percolation concept, at the start of simulation. Random walk model was used to represent gaseous species diffusion through particle pores. Char combustion was modeled using power law Arrhenius model which assumes that reaction rate depends of particle temperature and oxygen partial pressure on particle surface. The main aim of the proposed model was to take into account influence of heterogeneous char particle structure to randomness of the char combustion process. The suggested models behavior was validated by qualitative comparison with experimental data obtained in single particle reactor. It was found that simulated combustion time, char burnout and particle temperature values are in good agreement with experimentally determined data. Special emphasis was given to the CO2 gasification reaction influence on char conversion and particle temperature values. Further development of the proposed model with appropriate simplifications would enable its inclusion in comprehensive CFD codes. (C) 2015 Elsevier Ltd. All rights reserved.",
journal = "Fuel",
title = "Lattice Monte Carlo simulation of single coal char particle combustion under oxy-fuel conditions",
volume = "151",
pages = "172-181",
doi = "10.1016/j.fuel.2015.02.104"
}

Jovanović, R. D., Marek, E., Maletić, S., Cvetinović, D.,& Marković, Z. J.. (2015). Lattice Monte Carlo simulation of single coal char particle combustion under oxy-fuel conditions. in Fuel, 151, 172-181.
https://doi.org/10.1016/j.fuel.2015.02.104

Jovanović RD, Marek E, Maletić S, Cvetinović D, Marković ZJ. Lattice Monte Carlo simulation of single coal char particle combustion under oxy-fuel conditions. in Fuel. 2015;151:172-181.
doi:10.1016/j.fuel.2015.02.104 .

Jovanović, Rastko D., Marek, Ewa, Maletić, Slobodan, Cvetinović, Dejan, Marković, Zoran J., "Lattice Monte Carlo simulation of single coal char particle combustion under oxy-fuel conditions" in Fuel, 151 (2015):172-181,
https://doi.org/10.1016/j.fuel.2015.02.104 . .

TY  - CONF
AU  - Kandić, Aleksandar
AU  - Šešlak, Bojan
AU  - Đurašević, Mirjana
AU  - Erić, Milić
AU  - Vukanac, Ivana
AU  - Marković, Zoran J.
AU  - Milošević, Zoran
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12819
AB  - Ugalj, šljaka i pepeo iz termoelektrana sadrţe prirodne radionuklide čije se specifične aktivnosti mogu odrediti pomoću poluprovodničke gama spektrometrijske analize. Ove specifične aktivnosti su uglavnom niske, pa se stoga uzorci mere na malim rastojanjima od detektora, gde su izraţeni efekti koincidentnog sumiranja. U radu su prikazani korekcioni faktori za sumacione efekte za radionuklide iz uranovog (234mPa, 234Th, 226Ra, 214Bi i 214Pb) i torijumovog niza (228Ac, 224Ra, 212Pb, 212Bi i 208Tl) dobijeni primenom softvera EFFTRAN, kao i korigovane vrednosti specifičnih aktivnosti.
AB  - Coal, slag and ash from thermal power plants contain natural radionuclides whose specific activity could be determined by semiconductor gamma spectrometry. These specific activities are generally low, and therefore the samples should be measured at small distances from the detector, where coincidence summing effect are very pronounced. The corrections factors, obtained by using software EFFTRAN, for coincidence summing effects in the case of radionuclides from uranium ( 234mPa, 234Th, 226Ra, 214Bi and 214Pb) and thorium (228Ac, 224Ra, 212Pb, 212Bi and 208Tl) serie are presented in this paper, as well as corrected values for specific activities.
PB  - Beograd : Univerzitet u Beogradu, Institut za nuklearne nauke "Vinča"
PB  - Beograd : Društvo za zaštitu od zračenja Srbije i Crne Gore
C3  - 28. симпозијум ДЗЗСЦГ : зборник радова
T1  - Primena softvera Efftran u analizi specifiĉnih aktivnosti uzoraka uglja, šljake i pepela iz termoelektrana
T1  - Application of software Efftran in radiological analysis of coal, slag and ash samples from thermal power plants
SP  - 464
EP  - 469
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12819
ER  - 

@conference{
author = "Kandić, Aleksandar and Šešlak, Bojan and Đurašević, Mirjana and Erić, Milić and Vukanac, Ivana and Marković, Zoran J. and Milošević, Zoran",
year = "2015",
abstract = "Ugalj, šljaka i pepeo iz termoelektrana sadrţe prirodne radionuklide čije se specifične aktivnosti mogu odrediti pomoću poluprovodničke gama spektrometrijske analize. Ove specifične aktivnosti su uglavnom niske, pa se stoga uzorci mere na malim rastojanjima od detektora, gde su izraţeni efekti koincidentnog sumiranja. U radu su prikazani korekcioni faktori za sumacione efekte za radionuklide iz uranovog (234mPa, 234Th, 226Ra, 214Bi i 214Pb) i torijumovog niza (228Ac, 224Ra, 212Pb, 212Bi i 208Tl) dobijeni primenom softvera EFFTRAN, kao i korigovane vrednosti specifičnih aktivnosti., Coal, slag and ash from thermal power plants contain natural radionuclides whose specific activity could be determined by semiconductor gamma spectrometry. These specific activities are generally low, and therefore the samples should be measured at small distances from the detector, where coincidence summing effect are very pronounced. The corrections factors, obtained by using software EFFTRAN, for coincidence summing effects in the case of radionuclides from uranium ( 234mPa, 234Th, 226Ra, 214Bi and 214Pb) and thorium (228Ac, 224Ra, 212Pb, 212Bi and 208Tl) serie are presented in this paper, as well as corrected values for specific activities.",
publisher = "Beograd : Univerzitet u Beogradu, Institut za nuklearne nauke "Vinča", Beograd : Društvo za zaštitu od zračenja Srbije i Crne Gore",
journal = "28. симпозијум ДЗЗСЦГ : зборник радова",
title = "Primena softvera Efftran u analizi specifiĉnih aktivnosti uzoraka uglja, šljake i pepela iz termoelektrana, Application of software Efftran in radiological analysis of coal, slag and ash samples from thermal power plants",
pages = "464-469",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12819"
}

Kandić, A., Šešlak, B., Đurašević, M., Erić, M., Vukanac, I., Marković, Z. J.,& Milošević, Z.. (2015). Primena softvera Efftran u analizi specifiĉnih aktivnosti uzoraka uglja, šljake i pepela iz termoelektrana. in 28. симпозијум ДЗЗСЦГ : зборник радова
Beograd : Univerzitet u Beogradu, Institut za nuklearne nauke "Vinča"., 464-469.
https://hdl.handle.net/21.15107/rcub_vinar_12819

Kandić A, Šešlak B, Đurašević M, Erić M, Vukanac I, Marković ZJ, Milošević Z. Primena softvera Efftran u analizi specifiĉnih aktivnosti uzoraka uglja, šljake i pepela iz termoelektrana. in 28. симпозијум ДЗЗСЦГ : зборник радова. 2015;:464-469.
https://hdl.handle.net/21.15107/rcub_vinar_12819 .

Kandić, Aleksandar, Šešlak, Bojan, Đurašević, Mirjana, Erić, Milić, Vukanac, Ivana, Marković, Zoran J., Milošević, Zoran, "Primena softvera Efftran u analizi specifiĉnih aktivnosti uzoraka uglja, šljake i pepela iz termoelektrana" in 28. симпозијум ДЗЗСЦГ : зборник радова (2015):464-469,
https://hdl.handle.net/21.15107/rcub_vinar_12819 .

TY  - CONF
AU  - Kandić, Aleksandar
AU  - Šešlak, Bojan
AU  - Đurašević, Mirjana
AU  - Erić, Milić
AU  - Vukanac, Ivana
AU  - Milošević, Zoran
AU  - Marković, Zoran
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12759
AB  - Ugalj,iporedsve intenzivnijeg razvoja i korišćenja obnovljivih izvora energije, ima i dalje značajnu ulogu u proizvodnji električne energije širom sveta. U Republici Srbiji prema godišnjem izveštaju “Elektroprivrede Srbije” za 2013. godinu u termoelektranama, čije jepogonsko gorivo lignit, proizvedeno je 26 537GWhod ukupno37 433 GWh električne energije[1]. Proizvodnja uglja, koji se koristi u termoelektranama “Elektroprivrede Srbije”, odvija se na površinskim kopovima rudarskih basena Kolubara (75 %) iKostolac(25 %) [2].
AB  - Coal as the fossil fuel contains naturally occurring radionuclides and belongs toNORM (Naturally Occurring Radioactive Materials). On the other hand, slag and fly-ash belong to TENORM (Technically Enhanced Naturally Occurring Radioactive Material), and if they are released into the environment an increase and/or redistribution of natural radionuclide content can occur. For the purposes of this study, six sets of samples (18 in total) of “Kolubara” coal, slag and fly-ash were collected during the periodical emission tests in May 2012th at steam boilers K3 and K4 of TPP “Kolubara”, Serbia. Coal, slag and fly-ash samples were prepared for analysis (milled, dried, sieved and weighed) by appropriate standard methods. Prepared samples were placedin 125 mL PVC cylindrical boxes, weighted and sealed with natural wax. Sealed samples were measured with a semiconductor HPGe spectrometer (37 % relative efficiency) after the radioactive equilibrium was reached. The obtained values of specific activity for coal (Ac), slag (As) and fly-ash (Af) do not differ significantly compared to the values available in the literature. Analysis of determined mutual ratiosAs/Ac andAf/Ac are consistent, taking into account uncertainties ofactivity concentrations, with values of approximately 2 and 4, forK3, and1.5 and 4, forK4. Discrepancies were notedonly for40K (bothsteam boilers) ofAs/Ac.Results indicate that further investigation with more samples should be undertaken, and also correlation between radiological and proximate analysis should be determined.
PB  - Zagreb : Croatian Radiation Protection Association
C3  - CRPA : 10th Symposium of the Croatian Radiation Protection Association : Proceedings
T1  - Određivanje međusobnih odnosa specifičnih aktivnosti uzoraka uglja, pepela i šljake iz termoelektrane “Kolubara”, Srbija
T1  - Determination of mutual ratios for specific activity in coal, slag and fly-ash samples from “Kolubara” power plant
SP  - 286
EP  - 291
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12759
ER  - 

@conference{
author = "Kandić, Aleksandar and Šešlak, Bojan and Đurašević, Mirjana and Erić, Milić and Vukanac, Ivana and Milošević, Zoran and Marković, Zoran",
year = "2015",
abstract = "Ugalj,iporedsve intenzivnijeg razvoja i korišćenja obnovljivih izvora energije, ima i dalje značajnu ulogu u proizvodnji električne energije širom sveta. U Republici Srbiji prema godišnjem izveštaju “Elektroprivrede Srbije” za 2013. godinu u termoelektranama, čije jepogonsko gorivo lignit, proizvedeno je 26 537GWhod ukupno37 433 GWh električne energije[1]. Proizvodnja uglja, koji se koristi u termoelektranama “Elektroprivrede Srbije”, odvija se na površinskim kopovima rudarskih basena Kolubara (75 %) iKostolac(25 %) [2]., Coal as the fossil fuel contains naturally occurring radionuclides and belongs toNORM (Naturally Occurring Radioactive Materials). On the other hand, slag and fly-ash belong to TENORM (Technically Enhanced Naturally Occurring Radioactive Material), and if they are released into the environment an increase and/or redistribution of natural radionuclide content can occur. For the purposes of this study, six sets of samples (18 in total) of “Kolubara” coal, slag and fly-ash were collected during the periodical emission tests in May 2012th at steam boilers K3 and K4 of TPP “Kolubara”, Serbia. Coal, slag and fly-ash samples were prepared for analysis (milled, dried, sieved and weighed) by appropriate standard methods. Prepared samples were placedin 125 mL PVC cylindrical boxes, weighted and sealed with natural wax. Sealed samples were measured with a semiconductor HPGe spectrometer (37 % relative efficiency) after the radioactive equilibrium was reached. The obtained values of specific activity for coal (Ac), slag (As) and fly-ash (Af) do not differ significantly compared to the values available in the literature. Analysis of determined mutual ratiosAs/Ac andAf/Ac are consistent, taking into account uncertainties ofactivity concentrations, with values of approximately 2 and 4, forK3, and1.5 and 4, forK4. Discrepancies were notedonly for40K (bothsteam boilers) ofAs/Ac.Results indicate that further investigation with more samples should be undertaken, and also correlation between radiological and proximate analysis should be determined.",
publisher = "Zagreb : Croatian Radiation Protection Association",
journal = "CRPA : 10th Symposium of the Croatian Radiation Protection Association : Proceedings",
title = "Određivanje međusobnih odnosa specifičnih aktivnosti uzoraka uglja, pepela i šljake iz termoelektrane “Kolubara”, Srbija, Determination of mutual ratios for specific activity in coal, slag and fly-ash samples from “Kolubara” power plant",
pages = "286-291",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12759"
}

Kandić, A., Šešlak, B., Đurašević, M., Erić, M., Vukanac, I., Milošević, Z.,& Marković, Z.. (2015). Određivanje međusobnih odnosa specifičnih aktivnosti uzoraka uglja, pepela i šljake iz termoelektrane “Kolubara”, Srbija. in CRPA : 10th Symposium of the Croatian Radiation Protection Association : Proceedings
Zagreb : Croatian Radiation Protection Association., 286-291.
https://hdl.handle.net/21.15107/rcub_vinar_12759

Kandić A, Šešlak B, Đurašević M, Erić M, Vukanac I, Milošević Z, Marković Z. Određivanje međusobnih odnosa specifičnih aktivnosti uzoraka uglja, pepela i šljake iz termoelektrane “Kolubara”, Srbija. in CRPA : 10th Symposium of the Croatian Radiation Protection Association : Proceedings. 2015;:286-291.
https://hdl.handle.net/21.15107/rcub_vinar_12759 .

Kandić, Aleksandar, Šešlak, Bojan, Đurašević, Mirjana, Erić, Milić, Vukanac, Ivana, Milošević, Zoran, Marković, Zoran, "Određivanje međusobnih odnosa specifičnih aktivnosti uzoraka uglja, pepela i šljake iz termoelektrane “Kolubara”, Srbija" in CRPA : 10th Symposium of the Croatian Radiation Protection Association : Proceedings (2015):286-291,
https://hdl.handle.net/21.15107/rcub_vinar_12759 .

TY  - CONF
AU  - Šešlak, Bojan
AU  - Đurašević, Mirjana
AU  - Erić, Milić
AU  - Kandić, Aleksandar
AU  - Vukanac, Ivana
AU  - Marković, Zoran
AU  - Milošević, Zoran
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12817
PB  - Niš : University of Niš, Faculty of Mechanical Engineering in Niš
C3  - SIMTERM : 17th Symposium on Thermal Science and Engineering of Serbia : “Energy – Ecology – Efficiency” : Proceedigns
T1  - Natural Radioactivity in Coal, Slag, and Fly-ash Samples from “Nikola Tesla” Power Plant – Risk Assessment
SP  - 542
EP  - 548
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12817
ER  - 

@conference{
author = "Šešlak, Bojan and Đurašević, Mirjana and Erić, Milić and Kandić, Aleksandar and Vukanac, Ivana and Marković, Zoran and Milošević, Zoran",
year = "2015",
publisher = "Niš : University of Niš, Faculty of Mechanical Engineering in Niš",
journal = "SIMTERM : 17th Symposium on Thermal Science and Engineering of Serbia : “Energy – Ecology – Efficiency” : Proceedigns",
title = "Natural Radioactivity in Coal, Slag, and Fly-ash Samples from “Nikola Tesla” Power Plant – Risk Assessment",
pages = "542-548",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12817"
}

Šešlak, B., Đurašević, M., Erić, M., Kandić, A., Vukanac, I., Marković, Z.,& Milošević, Z.. (2015). Natural Radioactivity in Coal, Slag, and Fly-ash Samples from “Nikola Tesla” Power Plant – Risk Assessment. in SIMTERM : 17th Symposium on Thermal Science and Engineering of Serbia : “Energy – Ecology – Efficiency” : Proceedigns
Niš : University of Niš, Faculty of Mechanical Engineering in Niš., 542-548.
https://hdl.handle.net/21.15107/rcub_vinar_12817

Šešlak B, Đurašević M, Erić M, Kandić A, Vukanac I, Marković Z, Milošević Z. Natural Radioactivity in Coal, Slag, and Fly-ash Samples from “Nikola Tesla” Power Plant – Risk Assessment. in SIMTERM : 17th Symposium on Thermal Science and Engineering of Serbia : “Energy – Ecology – Efficiency” : Proceedigns. 2015;:542-548.
https://hdl.handle.net/21.15107/rcub_vinar_12817 .

Šešlak, Bojan, Đurašević, Mirjana, Erić, Milić, Kandić, Aleksandar, Vukanac, Ivana, Marković, Zoran, Milošević, Zoran, "Natural Radioactivity in Coal, Slag, and Fly-ash Samples from “Nikola Tesla” Power Plant – Risk Assessment" in SIMTERM : 17th Symposium on Thermal Science and Engineering of Serbia : “Energy – Ecology – Efficiency” : Proceedigns (2015):542-548,
https://hdl.handle.net/21.15107/rcub_vinar_12817 .

TY  - CONF
AU  - Kandić, Aleksandar
AU  - Šešlak, Bojan
AU  - Đurašević, Mirjana
AU  - Vukanac, Ivana
AU  - Erić, Milić
AU  - Milošević, Z.
AU  - Marković, Zoran
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12792
AB  - Ugalj predstavlja glavni izvor energije u Srbiji. Jedan od problema koji prati proizvodnju
energije iz uglja je problem tzv. “energetskog otpada”, kao što su leteći pepeo i šljaka, koji
predstavljaju nesagorivi i nesagoreli ostatak pri sagorevanju uglja. Leteći pepeo i šljaka
predstavljaju TENORM (Technically Enhanced Naturally Occurring Radioactive Material), a u
slučaju kada se odlažu u životnu sredinu mogu dovesti do uvećanja i/ili promene raspodele sadržaja
prirodnih radionuklida. Da bi se odredio eventualni uticaj “energetskog otpada” na životnu sredinu
analizirani su uzorci uglja, pepela i šljake iz termoelektrana “Nikola Tesla” i “Kolubara”.
U radu su prikazani rezultati koncentracije prirodnih radionuklida (uranovog i torijumovog niza,
kao i 40K) u uzorcima uglja, kao i šljake i pepela nastalih sagorevanjem uglja. Zatopljeni uzorci su
mereni nakon uspostavljanja radioaktivne ravnoteže na poluprovodničkom HPGe spektrometru
(37% relativne efikasnosti). Spektri uzoraka su snimljeni i analizirani pomoću programskog paketa
GENIE 2K, uz dodatnu analizu korišćenjem programa ANGES.
Dobijene vrednosti specifičnih aktivnosti ne odstupaju značajno u odnosu na vrednosti dostupne u
literaturi. Svi dobijeni rezultati su dodatno statistički obrađeni u cilju određivanje mogućih
korelacija.
AB  - Coal is the main energy source in Serbia. One of the problems associated with the
production of energy from coal is the so-called “energy waste”, such as fly-ash and slag (bottomash), which are incombustible and unburt residue from combustion of coal. Fly-ash and slag are
TENORM (Technically Enhanced Naturally Occurring Radioactive Material), and if they are
released into the environment an increase and/or redistribution of natural radionuclide content can
occur. To determine the potential impact of “energy waste” on the environment, samples of coal,
fly-ash, and slag from thermal power plant “Nikola Tesla” and “Kolubara” were analyzed.
The measured concentrations of natural radionuclides (uranium and thorium series and 40K) in
samples of coal as well as in slag and fly-ash produced by combustion of coal are presented in this
paper. Sealed samples were measured with a semiconductor HPGe spectrometer (37% relative
efficiency) after the radioactive equilibrium was reached. Spectra were recorded and analyzed using
software package GENIE 2K, with additional analysis performed by ANGES software.
The obtained values of specific activity do not differ significantly compared to the values available
in the literature. All the results were further statistically analyzed in order to determine the possible
correlation.
PB  - Belgrade : Society of Thermal Engineers of Serbia
C3  - International Conference Power Plants 2014 : Proceedings
T1  - Radiološka analiza uglja, šljake i letećeg pepela iz termoelektrana „Nikola Tesla“ i „Kolubara“
T1  - Radiological analysis of coal, slag and fly ash from „Nikola Tesla“ and „Kolubara“ power plants
SP  - 788
EP  - 795
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12792
ER  - 

@conference{
author = "Kandić, Aleksandar and Šešlak, Bojan and Đurašević, Mirjana and Vukanac, Ivana and Erić, Milić and Milošević, Z. and Marković, Zoran",
year = "2014",
abstract = "Ugalj predstavlja glavni izvor energije u Srbiji. Jedan od problema koji prati proizvodnju
energije iz uglja je problem tzv. “energetskog otpada”, kao što su leteći pepeo i šljaka, koji
predstavljaju nesagorivi i nesagoreli ostatak pri sagorevanju uglja. Leteći pepeo i šljaka
predstavljaju TENORM (Technically Enhanced Naturally Occurring Radioactive Material), a u
slučaju kada se odlažu u životnu sredinu mogu dovesti do uvećanja i/ili promene raspodele sadržaja
prirodnih radionuklida. Da bi se odredio eventualni uticaj “energetskog otpada” na životnu sredinu
analizirani su uzorci uglja, pepela i šljake iz termoelektrana “Nikola Tesla” i “Kolubara”.
U radu su prikazani rezultati koncentracije prirodnih radionuklida (uranovog i torijumovog niza,
kao i 40K) u uzorcima uglja, kao i šljake i pepela nastalih sagorevanjem uglja. Zatopljeni uzorci su
mereni nakon uspostavljanja radioaktivne ravnoteže na poluprovodničkom HPGe spektrometru
(37% relativne efikasnosti). Spektri uzoraka su snimljeni i analizirani pomoću programskog paketa
GENIE 2K, uz dodatnu analizu korišćenjem programa ANGES.
Dobijene vrednosti specifičnih aktivnosti ne odstupaju značajno u odnosu na vrednosti dostupne u
literaturi. Svi dobijeni rezultati su dodatno statistički obrađeni u cilju određivanje mogućih
korelacija., Coal is the main energy source in Serbia. One of the problems associated with the
production of energy from coal is the so-called “energy waste”, such as fly-ash and slag (bottomash), which are incombustible and unburt residue from combustion of coal. Fly-ash and slag are
TENORM (Technically Enhanced Naturally Occurring Radioactive Material), and if they are
released into the environment an increase and/or redistribution of natural radionuclide content can
occur. To determine the potential impact of “energy waste” on the environment, samples of coal,
fly-ash, and slag from thermal power plant “Nikola Tesla” and “Kolubara” were analyzed.
The measured concentrations of natural radionuclides (uranium and thorium series and 40K) in
samples of coal as well as in slag and fly-ash produced by combustion of coal are presented in this
paper. Sealed samples were measured with a semiconductor HPGe spectrometer (37% relative
efficiency) after the radioactive equilibrium was reached. Spectra were recorded and analyzed using
software package GENIE 2K, with additional analysis performed by ANGES software.
The obtained values of specific activity do not differ significantly compared to the values available
in the literature. All the results were further statistically analyzed in order to determine the possible
correlation.",
publisher = "Belgrade : Society of Thermal Engineers of Serbia",
journal = "International Conference Power Plants 2014 : Proceedings",
title = "Radiološka analiza uglja, šljake i letećeg pepela iz termoelektrana „Nikola Tesla“ i „Kolubara“, Radiological analysis of coal, slag and fly ash from „Nikola Tesla“ and „Kolubara“ power plants",
pages = "788-795",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12792"
}

Kandić, A., Šešlak, B., Đurašević, M., Vukanac, I., Erić, M., Milošević, Z.,& Marković, Z.. (2014). Radiološka analiza uglja, šljake i letećeg pepela iz termoelektrana „Nikola Tesla“ i „Kolubara“. in International Conference Power Plants 2014 : Proceedings
Belgrade : Society of Thermal Engineers of Serbia., 788-795.
https://hdl.handle.net/21.15107/rcub_vinar_12792

Kandić A, Šešlak B, Đurašević M, Vukanac I, Erić M, Milošević Z, Marković Z. Radiološka analiza uglja, šljake i letećeg pepela iz termoelektrana „Nikola Tesla“ i „Kolubara“. in International Conference Power Plants 2014 : Proceedings. 2014;:788-795.
https://hdl.handle.net/21.15107/rcub_vinar_12792 .

Kandić, Aleksandar, Šešlak, Bojan, Đurašević, Mirjana, Vukanac, Ivana, Erić, Milić, Milošević, Z., Marković, Zoran, "Radiološka analiza uglja, šljake i letećeg pepela iz termoelektrana „Nikola Tesla“ i „Kolubara“" in International Conference Power Plants 2014 : Proceedings (2014):788-795,
https://hdl.handle.net/21.15107/rcub_vinar_12792 .

TY  - JOUR
AU  - Cvetinović, Dejan
AU  - Stefanović, Predrag Lj.
AU  - Marković, Zoran J.
AU  - Bakić, Vukman
AU  - Turanjanin, Valentina
AU  - Jovanović, Marina P.
AU  - Vučićević, Biljana S.
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5636
AB  - As a non-Annex I Party to the United Nations Framework Convention on Climate Change and Kyoto Protocol signatory, the Republic of Serbia has committed to develop GHG (Greenhouse Gases) emission inventory and prepare comprehensive program of mitigation measures at national level. The paper presents results of 2000-2008 GHG emission inventory assembled for PDH (Public District Heating) sub-sector in accordance with revised IPCC (Intergovernmental Panel on Climate Change) Tier 1 methodology. Evaluation of proposed mitigation measures was performed based on 2012 and 2015 GHG emission projections, obtained for basic and four alternative scenarios, all characterized by the same energy demand but with different fuel mix used. The first alternative scenario addresses GHG emissions in case that solid fuel is substituted by natural gas. The second alternative scenario represents a sub-scenario of the first alternative scenario, with additional substitution of liquid fuel with locally available biomass. Third alternative scenario addresses emissions resulting from complete fuel switch from natural gas to liquid fuel oil, while the final alternative scenario considers the case when natural gas is the only energy resource used. GHG emission trends in the period until 2015, examined in case of previously mentioned basic and four alternative scenarios, point out to the positive impact of fuel switch on GHG emission reduction and pathways for future implementation of proposed mitigation measures. Results obtained clearly quantified assumption that fuel substitution by locally available biomass could solve environmental problems, overcome problems associated with high prices of imported fuels, improve energy supply security and increase local employment. (c) 2012 Elsevier Ltd. All rights reserved.
T2  - Energy
T1  - GHG (Greenhouse Gases) emission inventory and mitigation measures for public district heating plants in the Republic of Serbia
VL  - 57
SP  - 788
EP  - 795
DO  - 10.1016/j.energy.2012.09.063
ER  - 

@article{
author = "Cvetinović, Dejan and Stefanović, Predrag Lj. and Marković, Zoran J. and Bakić, Vukman and Turanjanin, Valentina and Jovanović, Marina P. and Vučićević, Biljana S.",
year = "2013",
abstract = "As a non-Annex I Party to the United Nations Framework Convention on Climate Change and Kyoto Protocol signatory, the Republic of Serbia has committed to develop GHG (Greenhouse Gases) emission inventory and prepare comprehensive program of mitigation measures at national level. The paper presents results of 2000-2008 GHG emission inventory assembled for PDH (Public District Heating) sub-sector in accordance with revised IPCC (Intergovernmental Panel on Climate Change) Tier 1 methodology. Evaluation of proposed mitigation measures was performed based on 2012 and 2015 GHG emission projections, obtained for basic and four alternative scenarios, all characterized by the same energy demand but with different fuel mix used. The first alternative scenario addresses GHG emissions in case that solid fuel is substituted by natural gas. The second alternative scenario represents a sub-scenario of the first alternative scenario, with additional substitution of liquid fuel with locally available biomass. Third alternative scenario addresses emissions resulting from complete fuel switch from natural gas to liquid fuel oil, while the final alternative scenario considers the case when natural gas is the only energy resource used. GHG emission trends in the period until 2015, examined in case of previously mentioned basic and four alternative scenarios, point out to the positive impact of fuel switch on GHG emission reduction and pathways for future implementation of proposed mitigation measures. Results obtained clearly quantified assumption that fuel substitution by locally available biomass could solve environmental problems, overcome problems associated with high prices of imported fuels, improve energy supply security and increase local employment. (c) 2012 Elsevier Ltd. All rights reserved.",
journal = "Energy",
title = "GHG (Greenhouse Gases) emission inventory and mitigation measures for public district heating plants in the Republic of Serbia",
volume = "57",
pages = "788-795",
doi = "10.1016/j.energy.2012.09.063"
}

Cvetinović, D., Stefanović, P. Lj., Marković, Z. J., Bakić, V., Turanjanin, V., Jovanović, M. P.,& Vučićević, B. S.. (2013). GHG (Greenhouse Gases) emission inventory and mitigation measures for public district heating plants in the Republic of Serbia. in Energy, 57, 788-795.
https://doi.org/10.1016/j.energy.2012.09.063

Cvetinović D, Stefanović PL, Marković ZJ, Bakić V, Turanjanin V, Jovanović MP, Vučićević BS. GHG (Greenhouse Gases) emission inventory and mitigation measures for public district heating plants in the Republic of Serbia. in Energy. 2013;57:788-795.
doi:10.1016/j.energy.2012.09.063 .

Cvetinović, Dejan, Stefanović, Predrag Lj., Marković, Zoran J., Bakić, Vukman, Turanjanin, Valentina, Jovanović, Marina P., Vučićević, Biljana S., "GHG (Greenhouse Gases) emission inventory and mitigation measures for public district heating plants in the Republic of Serbia" in Energy, 57 (2013):788-795,
https://doi.org/10.1016/j.energy.2012.09.063 . .

TY  - JOUR
AU  - Stefanović, Predrag Lj.
AU  - Marković, Zoran J.
AU  - Bakić, Vukman
AU  - Cvetinović, Dejan
AU  - Spasojević, Vuk D.
AU  - Živković, Nikola V.
PY  - 2012
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5062
AB  - The revised Intergovernmental Panel on Climate Change guidelines for national greenhouse gas inventories recommends that more comprehensive and thus more reliable characteristics of the local fossil fuels should be used for the national greenhouse gas inventory calculations. This paper deal with the carbon emission characteristics of low-calorific lignite recovered from the Kolubara open-pit mine. The samples of coal were carefully selected in order to cover the net calorific value, ash and water content of the broad spectrum of the quality of the raw lignite supplied to the Serbian thermal power plants. Correlation analysis of the laboratory analysis data gave a linear dependency of the net calorific value on the combustible content in the coal samples. Also, linear correlation between the carbon content and the net calorific value was found. The regression analysis of experimentally determined coal characteristics implies that the carbon emission factor is dependent on the net calorific value. For the subset of raw lignite samples with the net calorific value Q(d)(r) = 6-10 MJ/kg, that is most representative for current and near future use for power generation in Serbian thermal power plants, the linear dependency CEFr (tC/TJ) = 34.407 - 0.5891.Q(d)(r) MJ/kg was proposed. Regarding the net calorific ranges of samples examined, the raw Kolubara lignite carbon emission factor is considerably higher than those recommended by Intergovernmental Panel on Climate Change Tier 1 method of 27.6 tC/TJ.
T2  - Thermal Science
T1  - Evaluation of Kolubara Lignite Carbon Emission Characteristics
VL  - 16
IS  - 3
SP  - 805
EP  - 816
DO  - 10.2298/TSCI120215130S
ER  - 

@article{
author = "Stefanović, Predrag Lj. and Marković, Zoran J. and Bakić, Vukman and Cvetinović, Dejan and Spasojević, Vuk D. and Živković, Nikola V.",
year = "2012",
abstract = "The revised Intergovernmental Panel on Climate Change guidelines for national greenhouse gas inventories recommends that more comprehensive and thus more reliable characteristics of the local fossil fuels should be used for the national greenhouse gas inventory calculations. This paper deal with the carbon emission characteristics of low-calorific lignite recovered from the Kolubara open-pit mine. The samples of coal were carefully selected in order to cover the net calorific value, ash and water content of the broad spectrum of the quality of the raw lignite supplied to the Serbian thermal power plants. Correlation analysis of the laboratory analysis data gave a linear dependency of the net calorific value on the combustible content in the coal samples. Also, linear correlation between the carbon content and the net calorific value was found. The regression analysis of experimentally determined coal characteristics implies that the carbon emission factor is dependent on the net calorific value. For the subset of raw lignite samples with the net calorific value Q(d)(r) = 6-10 MJ/kg, that is most representative for current and near future use for power generation in Serbian thermal power plants, the linear dependency CEFr (tC/TJ) = 34.407 - 0.5891.Q(d)(r) MJ/kg was proposed. Regarding the net calorific ranges of samples examined, the raw Kolubara lignite carbon emission factor is considerably higher than those recommended by Intergovernmental Panel on Climate Change Tier 1 method of 27.6 tC/TJ.",
journal = "Thermal Science",
title = "Evaluation of Kolubara Lignite Carbon Emission Characteristics",
volume = "16",
number = "3",
pages = "805-816",
doi = "10.2298/TSCI120215130S"
}

Stefanović, P. Lj., Marković, Z. J., Bakić, V., Cvetinović, D., Spasojević, V. D.,& Živković, N. V.. (2012). Evaluation of Kolubara Lignite Carbon Emission Characteristics. in Thermal Science, 16(3), 805-816.
https://doi.org/10.2298/TSCI120215130S

Stefanović PL, Marković ZJ, Bakić V, Cvetinović D, Spasojević VD, Živković NV. Evaluation of Kolubara Lignite Carbon Emission Characteristics. in Thermal Science. 2012;16(3):805-816.
doi:10.2298/TSCI120215130S .

Stefanović, Predrag Lj., Marković, Zoran J., Bakić, Vukman, Cvetinović, Dejan, Spasojević, Vuk D., Živković, Nikola V., "Evaluation of Kolubara Lignite Carbon Emission Characteristics" in Thermal Science, 16, no. 3 (2012):805-816,
https://doi.org/10.2298/TSCI120215130S . .