TY  - JOUR
AU  - Radenković, Marina
AU  - Petrović, Jelena
AU  - Pap, Sabolc
AU  - Kalijadis, Ana
AU  - Momčilović, Miloš
AU  - Krstulović, Nikša
AU  - Živković, Sanja
PY  - 2024
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12206
AB  - Toxic elements, lead, and copper are often found in wastewater discharged from industries such as mining. The discharge of untreated effluent poses severe environmental challenges and sorption methods using agricultural waste materials are proposed as an efficient and cost-effective solution. For this research, activated sunflower material (ASM) was prepared from abundantly available agricultural sunflower waste residues and utilised to remove Pb2+ and Cu2+ ions from an aqueous medium. To begin, we examine variables that may have an impact on the adsorption process, such as pH, contact time, adsorbent dose, and initial concentration using Box-Behnken Design (BBD) to find optimal conditions. Maximum removal efficiency was found at a pH of 5, contact time of 180 min, and initial concentration of 50 mg/L for Pb2+ and 150 mg/L for Cu2+. Additionally, adsorbent dose differed by element, for Cu2+ it was 200 mg, whilst for Pb2+ it was 124 mg. Features of activated carbon such as morphology, elemental composition, textural properties, and surface functionalities were characterised using SEM-EDS, BET, FTIR, and XPS. The adsorption equilibrium data were analysed by Langmuir, Freundlich, and Dubinin-Radushkevich isotherm models. It was found that the obtained results for Pb2+ adsorption were better described with the Freundlich isotherm model. Maximum adsorption capacities for Pb2+ and Cu2+ were 91.8 mg/g and 20.5 mg/g, respectively. Furthermore, kinetic studies confirmed that the adsorption process followed a pseudo-first-order kinetic model for Pb2+, but for Cu2+ all applied kinetic models fitted experimental data with the same values of the correlation coefficient (R2 = 0.99). After comprehensive analysis using the methods mentioned above, ASM was tested for the removal of Cu2+ from mining wastewater sample, and the obtained removal efficiency was 98.6% ± 2.0%. The results of desorption experiments conducted, confirm that ASM has good potential to be reused for the purpose of removing Cu2+ from wastewater.
T2  - Chemosphere
T1  - Waste biomass derived highly-porous carbon material for toxic metal removal: Optimisation, mechanisms and environmental implications
VL  - 347
SP  - 140684
DO  - 10.1016/j.chemosphere.2023.140684
ER  - 

@article{
author = "Radenković, Marina and Petrović, Jelena and Pap, Sabolc and Kalijadis, Ana and Momčilović, Miloš and Krstulović, Nikša and Živković, Sanja",
year = "2024",
abstract = "Toxic elements, lead, and copper are often found in wastewater discharged from industries such as mining. The discharge of untreated effluent poses severe environmental challenges and sorption methods using agricultural waste materials are proposed as an efficient and cost-effective solution. For this research, activated sunflower material (ASM) was prepared from abundantly available agricultural sunflower waste residues and utilised to remove Pb2+ and Cu2+ ions from an aqueous medium. To begin, we examine variables that may have an impact on the adsorption process, such as pH, contact time, adsorbent dose, and initial concentration using Box-Behnken Design (BBD) to find optimal conditions. Maximum removal efficiency was found at a pH of 5, contact time of 180 min, and initial concentration of 50 mg/L for Pb2+ and 150 mg/L for Cu2+. Additionally, adsorbent dose differed by element, for Cu2+ it was 200 mg, whilst for Pb2+ it was 124 mg. Features of activated carbon such as morphology, elemental composition, textural properties, and surface functionalities were characterised using SEM-EDS, BET, FTIR, and XPS. The adsorption equilibrium data were analysed by Langmuir, Freundlich, and Dubinin-Radushkevich isotherm models. It was found that the obtained results for Pb2+ adsorption were better described with the Freundlich isotherm model. Maximum adsorption capacities for Pb2+ and Cu2+ were 91.8 mg/g and 20.5 mg/g, respectively. Furthermore, kinetic studies confirmed that the adsorption process followed a pseudo-first-order kinetic model for Pb2+, but for Cu2+ all applied kinetic models fitted experimental data with the same values of the correlation coefficient (R2 = 0.99). After comprehensive analysis using the methods mentioned above, ASM was tested for the removal of Cu2+ from mining wastewater sample, and the obtained removal efficiency was 98.6% ± 2.0%. The results of desorption experiments conducted, confirm that ASM has good potential to be reused for the purpose of removing Cu2+ from wastewater.",
journal = "Chemosphere",
title = "Waste biomass derived highly-porous carbon material for toxic metal removal: Optimisation, mechanisms and environmental implications",
volume = "347",
pages = "140684",
doi = "10.1016/j.chemosphere.2023.140684"
}

Radenković, M., Petrović, J., Pap, S., Kalijadis, A., Momčilović, M., Krstulović, N.,& Živković, S.. (2024). Waste biomass derived highly-porous carbon material for toxic metal removal: Optimisation, mechanisms and environmental implications. in Chemosphere, 347, 140684.
https://doi.org/10.1016/j.chemosphere.2023.140684

Radenković M, Petrović J, Pap S, Kalijadis A, Momčilović M, Krstulović N, Živković S. Waste biomass derived highly-porous carbon material for toxic metal removal: Optimisation, mechanisms and environmental implications. in Chemosphere. 2024;347:140684.
doi:10.1016/j.chemosphere.2023.140684 .

Radenković, Marina, Petrović, Jelena, Pap, Sabolc, Kalijadis, Ana, Momčilović, Miloš, Krstulović, Nikša, Živković, Sanja, "Waste biomass derived highly-porous carbon material for toxic metal removal: Optimisation, mechanisms and environmental implications" in Chemosphere, 347 (2024):140684,
https://doi.org/10.1016/j.chemosphere.2023.140684 . .

TY  - JOUR
AU  - Kojić, Marija
AU  - Mihajlović, Marija
AU  - Marinović-Cincović, Milena
AU  - Petrović, Jelena
AU  - Katnić, Đurica
AU  - Krstić, Aleksandar
AU  - Butulija, Svetlana
AU  - Onjia, Antonije E.
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10272
AB  - A calcium-pyro-hydrochar (Ca-PHC) can be distinguished as a novel sorbent of Pb2+ and Cd2+ from an aqueous solution. It was obtained using hydrothermal treatment of the spent mushroom substrate (SMS), followed by a CaCl2·5H2O activation and pyrolysis. The characterisation of chars before and after modifications was done by scanning electron microscope (SEM), Brunauer–Emmett–Teller (BET) and Fourier transform infrared (FTIR). Batch experiments were performed to examine Ca-PHC’s sorption properties and binding mechanisms to selected metal ions. The maximum sorption capacities of Ca-PHC for Pb2+ and Cd2+ were 297 mg g−1, and 131 mg g−1, respectively. The obtained results demonstrated that the sorption of Pb2+ and Cd2+ by Ca-PHC follows a pseudo-second kinetic model and Freundlich isotherm. The binding of the selected metals onto Ca-PHC was enabled by the ion-exchange mechanism, surface complexation, mineral precipitation and cation–π interaction. Thermodynamic parameters indicate that metal ions binding by Ca-PHC are spontaneous and endothermic. Due to the high adsorption capacities, the obtained Ca-PHC has good potential for application in industrial wastewater treatment. In addition, the demonstrated use of SMS highlights another possibility of applying this specific biomass relevant to sustainable and economical waste management in the growing mushroom industry.
T2  - Waste Management and Research
T1  - Calcium-pyro-hydrochar derived from the spent mushroom substrate as a functional sorbent of Pb2+ and Cd2+ from aqueous solutions
DO  - 10.1177/0734242X221093951
ER  - 

@article{
author = "Kojić, Marija and Mihajlović, Marija and Marinović-Cincović, Milena and Petrović, Jelena and Katnić, Đurica and Krstić, Aleksandar and Butulija, Svetlana and Onjia, Antonije E.",
year = "2022",
abstract = "A calcium-pyro-hydrochar (Ca-PHC) can be distinguished as a novel sorbent of Pb2+ and Cd2+ from an aqueous solution. It was obtained using hydrothermal treatment of the spent mushroom substrate (SMS), followed by a CaCl2·5H2O activation and pyrolysis. The characterisation of chars before and after modifications was done by scanning electron microscope (SEM), Brunauer–Emmett–Teller (BET) and Fourier transform infrared (FTIR). Batch experiments were performed to examine Ca-PHC’s sorption properties and binding mechanisms to selected metal ions. The maximum sorption capacities of Ca-PHC for Pb2+ and Cd2+ were 297 mg g−1, and 131 mg g−1, respectively. The obtained results demonstrated that the sorption of Pb2+ and Cd2+ by Ca-PHC follows a pseudo-second kinetic model and Freundlich isotherm. The binding of the selected metals onto Ca-PHC was enabled by the ion-exchange mechanism, surface complexation, mineral precipitation and cation–π interaction. Thermodynamic parameters indicate that metal ions binding by Ca-PHC are spontaneous and endothermic. Due to the high adsorption capacities, the obtained Ca-PHC has good potential for application in industrial wastewater treatment. In addition, the demonstrated use of SMS highlights another possibility of applying this specific biomass relevant to sustainable and economical waste management in the growing mushroom industry.",
journal = "Waste Management and Research",
title = "Calcium-pyro-hydrochar derived from the spent mushroom substrate as a functional sorbent of Pb2+ and Cd2+ from aqueous solutions",
doi = "10.1177/0734242X221093951"
}

Kojić, M., Mihajlović, M., Marinović-Cincović, M., Petrović, J., Katnić, Đ., Krstić, A., Butulija, S.,& Onjia, A. E.. (2022). Calcium-pyro-hydrochar derived from the spent mushroom substrate as a functional sorbent of Pb2+ and Cd2+ from aqueous solutions. in Waste Management and Research.
https://doi.org/10.1177/0734242X221093951

Kojić M, Mihajlović M, Marinović-Cincović M, Petrović J, Katnić Đ, Krstić A, Butulija S, Onjia AE. Calcium-pyro-hydrochar derived from the spent mushroom substrate as a functional sorbent of Pb2+ and Cd2+ from aqueous solutions. in Waste Management and Research. 2022;.
doi:10.1177/0734242X221093951 .

Kojić, Marija, Mihajlović, Marija, Marinović-Cincović, Milena, Petrović, Jelena, Katnić, Đurica, Krstić, Aleksandar, Butulija, Svetlana, Onjia, Antonije E., "Calcium-pyro-hydrochar derived from the spent mushroom substrate as a functional sorbent of Pb2+ and Cd2+ from aqueous solutions" in Waste Management and Research (2022),
https://doi.org/10.1177/0734242X221093951 . .

TY  - CONF
AU  - Kojić, Marija
AU  - Porobić, Slavica
AU  - Katnić, Đurica
AU  - Petrović, Jelena
AU  - Simić, Marija
AU  - Ožegović, Milica
AU  - Marinović-Cincović, Milena
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12631
AB  - In this study, the adsorption capacity of Pb2+ removal from aqueous solution was examined by hydrochar of the spent mushroom substrate. In order to improve the adsorption capacity, hydrochar was previously activated with 2M KOH. The obtained results demonstrated that alkally activation increased the sorption capacity from 36 mg g-1 to 74 mg g-1. Structural characterization of activated and inactivated hydrochars were performed by FTIR analysis. Toward to obtained results of FTIR analysis, the increased of the oxygen functional groups (OFG) in activated hydrochars was perceived, which is contributed to the increase in the adsorption capacity of this carbonized material. Results indicated that spent mushroom substrate can be converted into hydrochar as a perspective sorbent for removal of Pb2+.
PB  - Banja Luka : University PIM
C3  - XI International Conference on Social and Technological Development STED 2022 : Book of Abstracts
T1  - Removal of Pb2+ from aqeous solution using alkally activated hydrochar of the spent mushroom substrate
SP  - 90
EP  - 90
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12631
ER  - 

@conference{
author = "Kojić, Marija and Porobić, Slavica and Katnić, Đurica and Petrović, Jelena and Simić, Marija and Ožegović, Milica and Marinović-Cincović, Milena",
year = "2022",
abstract = "In this study, the adsorption capacity of Pb2+ removal from aqueous solution was examined by hydrochar of the spent mushroom substrate. In order to improve the adsorption capacity, hydrochar was previously activated with 2M KOH. The obtained results demonstrated that alkally activation increased the sorption capacity from 36 mg g-1 to 74 mg g-1. Structural characterization of activated and inactivated hydrochars were performed by FTIR analysis. Toward to obtained results of FTIR analysis, the increased of the oxygen functional groups (OFG) in activated hydrochars was perceived, which is contributed to the increase in the adsorption capacity of this carbonized material. Results indicated that spent mushroom substrate can be converted into hydrochar as a perspective sorbent for removal of Pb2+.",
publisher = "Banja Luka : University PIM",
journal = "XI International Conference on Social and Technological Development STED 2022 : Book of Abstracts",
title = "Removal of Pb2+ from aqeous solution using alkally activated hydrochar of the spent mushroom substrate",
pages = "90-90",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12631"
}

Kojić, M., Porobić, S., Katnić, Đ., Petrović, J., Simić, M., Ožegović, M.,& Marinović-Cincović, M.. (2022). Removal of Pb2+ from aqeous solution using alkally activated hydrochar of the spent mushroom substrate. in XI International Conference on Social and Technological Development STED 2022 : Book of Abstracts
Banja Luka : University PIM., 90-90.
https://hdl.handle.net/21.15107/rcub_vinar_12631

Kojić M, Porobić S, Katnić Đ, Petrović J, Simić M, Ožegović M, Marinović-Cincović M. Removal of Pb2+ from aqeous solution using alkally activated hydrochar of the spent mushroom substrate. in XI International Conference on Social and Technological Development STED 2022 : Book of Abstracts. 2022;:90-90.
https://hdl.handle.net/21.15107/rcub_vinar_12631 .

Kojić, Marija, Porobić, Slavica, Katnić, Đurica, Petrović, Jelena, Simić, Marija, Ožegović, Milica, Marinović-Cincović, Milena, "Removal of Pb2+ from aqeous solution using alkally activated hydrochar of the spent mushroom substrate" in XI International Conference on Social and Technological Development STED 2022 : Book of Abstracts (2022):90-90,
https://hdl.handle.net/21.15107/rcub_vinar_12631 .

TY  - JOUR
AU  - Simić, Marija
AU  - Petrović, Jelena
AU  - Šoštarić, Tatjana
AU  - Ercegović, Marija
AU  - Milojković, Jelena
AU  - Lopičić, Zorica
AU  - Kojić, Marija
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10489
AB  - In this study, raw corn silk was considered for the removal of cadmium ions from aqueous solutions. In order to improve adsorption characteristics, the KOH treatment was applied as a route to obtain modified materials. Both materials before and after metal adsorption were characterized by pHPZC, SEM-EDX and FTIR analysis. SEM images and FTIR spectra revealed that alkali modification caused some structural changes that could improve the adsorption properties of the investigated material. The experimental results and the ion-exchange study revealed that the biosorption process of cadmium ions on to raw and modified corn silk was caused predominantly by the ion-exchange mechanism, followed by chemisorption. The kinetic parameters implied that there are three stages in the biosorption process. In addition, the cadmium adsorption on both materials is very fast and is followed by the pseudo-second-order kinetic model. The experimental results were fitted by two and three parameter isotherm models, while the Sips isotherm model best describes the biosorption process on both materials. According to the Sips isotherm model, the maximum adsorption capacity of cadmium adsorbed on modified materials was 49.06 mg g−1, which is 2.23 times greater in comparison to the raw material (21.96 mg g−1). Furthermore, the mechanisms of cadmium adsorption onto the investigated materials are summarized in order to better understand the modification influence on the adsorption properties of corn silk. In order to examine reusability of the investigated material, diluted nitric acid was used for regeneration. A desorption study was performed in three adsorption-desorption cycles. A high desorption efficiency (˃85%) indicated that MCS after Cd adsorption can be efficiently recovered and reused for a new adsorption cycle.
T2  - Processes
T1  - A Mechanism Assessment and Differences of Cadmium Adsorption on Raw and Alkali-Modified Agricultural Waste
VL  - 10
IS  - 10
SP  - 1957
DO  - 10.3390/pr10101957
ER  - 

@article{
author = "Simić, Marija and Petrović, Jelena and Šoštarić, Tatjana and Ercegović, Marija and Milojković, Jelena and Lopičić, Zorica and Kojić, Marija",
year = "2022",
abstract = "In this study, raw corn silk was considered for the removal of cadmium ions from aqueous solutions. In order to improve adsorption characteristics, the KOH treatment was applied as a route to obtain modified materials. Both materials before and after metal adsorption were characterized by pHPZC, SEM-EDX and FTIR analysis. SEM images and FTIR spectra revealed that alkali modification caused some structural changes that could improve the adsorption properties of the investigated material. The experimental results and the ion-exchange study revealed that the biosorption process of cadmium ions on to raw and modified corn silk was caused predominantly by the ion-exchange mechanism, followed by chemisorption. The kinetic parameters implied that there are three stages in the biosorption process. In addition, the cadmium adsorption on both materials is very fast and is followed by the pseudo-second-order kinetic model. The experimental results were fitted by two and three parameter isotherm models, while the Sips isotherm model best describes the biosorption process on both materials. According to the Sips isotherm model, the maximum adsorption capacity of cadmium adsorbed on modified materials was 49.06 mg g−1, which is 2.23 times greater in comparison to the raw material (21.96 mg g−1). Furthermore, the mechanisms of cadmium adsorption onto the investigated materials are summarized in order to better understand the modification influence on the adsorption properties of corn silk. In order to examine reusability of the investigated material, diluted nitric acid was used for regeneration. A desorption study was performed in three adsorption-desorption cycles. A high desorption efficiency (˃85%) indicated that MCS after Cd adsorption can be efficiently recovered and reused for a new adsorption cycle.",
journal = "Processes",
title = "A Mechanism Assessment and Differences of Cadmium Adsorption on Raw and Alkali-Modified Agricultural Waste",
volume = "10",
number = "10",
pages = "1957",
doi = "10.3390/pr10101957"
}

Simić, M., Petrović, J., Šoštarić, T., Ercegović, M., Milojković, J., Lopičić, Z.,& Kojić, M.. (2022). A Mechanism Assessment and Differences of Cadmium Adsorption on Raw and Alkali-Modified Agricultural Waste. in Processes, 10(10), 1957.
https://doi.org/10.3390/pr10101957

Simić M, Petrović J, Šoštarić T, Ercegović M, Milojković J, Lopičić Z, Kojić M. A Mechanism Assessment and Differences of Cadmium Adsorption on Raw and Alkali-Modified Agricultural Waste. in Processes. 2022;10(10):1957.
doi:10.3390/pr10101957 .

Simić, Marija, Petrović, Jelena, Šoštarić, Tatjana, Ercegović, Marija, Milojković, Jelena, Lopičić, Zorica, Kojić, Marija, "A Mechanism Assessment and Differences of Cadmium Adsorption on Raw and Alkali-Modified Agricultural Waste" in Processes, 10, no. 10 (2022):1957,
https://doi.org/10.3390/pr10101957 . .

TY  - JOUR
AU  - Kojić, Marija
AU  - Petrović, Jelena T.
AU  - Petrović, Marija S.
AU  - Stanković, Slavka M.
AU  - Porobić, Slavica
AU  - Marinović-Cincović, Milena
AU  - Mihajlović, Marija
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9625
AB  - Hydrothermal carbonization (HTC) was employed for the conversion of the spent mushroom substrate (SMS) into a carbonaceous hydrochar. The effect of operating temperature (180, 200, 220, 240, and 260 °C) on the physicochemical, structural, and combustion properties of the obtained hydrochars was analyzed. The HTC treatment caused the increase of the higher heating value (HHV) and the lower heating value (LHV) of hydrochars for 58 % and 65 % in comparison with SMS, respectively. Analysis of morphology and functional groups showed the formation of microspheres and cracks on the hydrochar surface, which are predominantly dominated by aromatic and oxygen-rich functional groups. Thermal and kinetics analysis showed that HTC treatment improves the combustion behavior of the obtained solids. Combustion kinetic parameters of SMS and hydrochars were determined by the methods of Kissenger-Akahira-Sunose (KAS) and Flynn-Wall-Ozawa (FWO). The thermodynamic parameters and pre-exponential factors reveal a complex mechanism of SMS and hydrochars decomposition process. © 2021 Elsevier B.V.
T2  - Journal of Analytical and Applied Pyrolysis
T1  - Hydrothermal carbonization of spent mushroom substrate: Physicochemical characterization, combustion behavior, kinetic and thermodynamic study
VL  - 155
SP  - 105028
DO  - 10.1016/j.jaap.2021.105028
ER  - 

@article{
author = "Kojić, Marija and Petrović, Jelena T. and Petrović, Marija S. and Stanković, Slavka M. and Porobić, Slavica and Marinović-Cincović, Milena and Mihajlović, Marija",
year = "2021",
abstract = "Hydrothermal carbonization (HTC) was employed for the conversion of the spent mushroom substrate (SMS) into a carbonaceous hydrochar. The effect of operating temperature (180, 200, 220, 240, and 260 °C) on the physicochemical, structural, and combustion properties of the obtained hydrochars was analyzed. The HTC treatment caused the increase of the higher heating value (HHV) and the lower heating value (LHV) of hydrochars for 58 % and 65 % in comparison with SMS, respectively. Analysis of morphology and functional groups showed the formation of microspheres and cracks on the hydrochar surface, which are predominantly dominated by aromatic and oxygen-rich functional groups. Thermal and kinetics analysis showed that HTC treatment improves the combustion behavior of the obtained solids. Combustion kinetic parameters of SMS and hydrochars were determined by the methods of Kissenger-Akahira-Sunose (KAS) and Flynn-Wall-Ozawa (FWO). The thermodynamic parameters and pre-exponential factors reveal a complex mechanism of SMS and hydrochars decomposition process. © 2021 Elsevier B.V.",
journal = "Journal of Analytical and Applied Pyrolysis",
title = "Hydrothermal carbonization of spent mushroom substrate: Physicochemical characterization, combustion behavior, kinetic and thermodynamic study",
volume = "155",
pages = "105028",
doi = "10.1016/j.jaap.2021.105028"
}

Kojić, M., Petrović, J. T., Petrović, M. S., Stanković, S. M., Porobić, S., Marinović-Cincović, M.,& Mihajlović, M.. (2021). Hydrothermal carbonization of spent mushroom substrate: Physicochemical characterization, combustion behavior, kinetic and thermodynamic study. in Journal of Analytical and Applied Pyrolysis, 155, 105028.
https://doi.org/10.1016/j.jaap.2021.105028

Kojić M, Petrović JT, Petrović MS, Stanković SM, Porobić S, Marinović-Cincović M, Mihajlović M. Hydrothermal carbonization of spent mushroom substrate: Physicochemical characterization, combustion behavior, kinetic and thermodynamic study. in Journal of Analytical and Applied Pyrolysis. 2021;155:105028.
doi:10.1016/j.jaap.2021.105028 .

Kojić, Marija, Petrović, Jelena T., Petrović, Marija S., Stanković, Slavka M., Porobić, Slavica, Marinović-Cincović, Milena, Mihajlović, Marija, "Hydrothermal carbonization of spent mushroom substrate: Physicochemical characterization, combustion behavior, kinetic and thermodynamic study" in Journal of Analytical and Applied Pyrolysis, 155 (2021):105028,
https://doi.org/10.1016/j.jaap.2021.105028 . .

TY  - CONF
AU  - Radenković, Marina
AU  - Petrović, Jelena
AU  - Momčilović, Miloš
AU  - Živković, Sanja
AU  - Relić, Dubravka
AU  - Popović, Aleksandar R.
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12758
AB  - With the growth of the industrial world and the rise of anthropogenic activities, environmental challenges have also increased. Wastewater, especially from industrial sources can contain a wide variety of heavy metals [1]. The presence of heavy metals in water resources is a cause for concern due to their toxicity and tendency to bioaccumulation, which leads to significant problems for the environment as well as for animals and humans [2]. There are various conventional treatment technologies that are used for the removal of heavy metals from wastewater such as reverse osmosis, electrodialysis, ultrafiltration, industrial ion exchange process, and chemical precipitation. These techniques have some drawbacks such a being expensive due to high reagent and energy requirements, incomplete metal removal at low concentrations of heavy metals and generation of sludge [1]. Therefore, biosorption has been the subject of research by scientists for almost 70 years in order to find efficient, effective, and low-cost biomaterials for wastewater treatment [3]. In this study, a sunflower husk treated with 1% hydrochloric acid was used to evaluate removal efficiency for Ni from real wastewater samples, as well as to estimate the adsorption capacity as a function of contact time between the heavy metal ions such as Cd in the aqueous solution and the sunflower husk as a biosorbent. Two techniques were used for quantitative analysis, Inductively Coupled Plasma Optical Emission Spectrometry (ICP-OES) as a standard reference method and laser-induced plasma spectroscopy (LIBS) as an innovative non-standard analytical method. What makes the LIBS superior from the other standard optical techniques is that it allows fast multi-elemental analysis without prior sample preparation, leads to minimal sample damage, and is considered almost non-destructive, this method is also by the principles of green analytical chemistry, which means that it does not use toxic reagents and therefore no chemical waste [4]. The results of these two methods were compared, to examine the possibility of using laser-induced plasma spectroscopy as an alternative green analytical technology for quantitative analysis of sunflower husk as a biosorbent and evaluation of biosorption efficiency as a function of contact time.
PB  - Belgrade : Serbian Chemical Society
C3  - 21st European Meeting on Environmental Chemistry : Book of Abstracts
T1  - Comparative Study of Removal Efficiency for Ni and Cd from Industrial Wastewater and Aqueous Solution by Sunflower Husk Using ICP-OES and LIBS
SP  - 100
EP  - 100
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12758
ER  - 

@conference{
author = "Radenković, Marina and Petrović, Jelena and Momčilović, Miloš and Živković, Sanja and Relić, Dubravka and Popović, Aleksandar R.",
year = "2021",
abstract = "With the growth of the industrial world and the rise of anthropogenic activities, environmental challenges have also increased. Wastewater, especially from industrial sources can contain a wide variety of heavy metals [1]. The presence of heavy metals in water resources is a cause for concern due to their toxicity and tendency to bioaccumulation, which leads to significant problems for the environment as well as for animals and humans [2]. There are various conventional treatment technologies that are used for the removal of heavy metals from wastewater such as reverse osmosis, electrodialysis, ultrafiltration, industrial ion exchange process, and chemical precipitation. These techniques have some drawbacks such a being expensive due to high reagent and energy requirements, incomplete metal removal at low concentrations of heavy metals and generation of sludge [1]. Therefore, biosorption has been the subject of research by scientists for almost 70 years in order to find efficient, effective, and low-cost biomaterials for wastewater treatment [3]. In this study, a sunflower husk treated with 1% hydrochloric acid was used to evaluate removal efficiency for Ni from real wastewater samples, as well as to estimate the adsorption capacity as a function of contact time between the heavy metal ions such as Cd in the aqueous solution and the sunflower husk as a biosorbent. Two techniques were used for quantitative analysis, Inductively Coupled Plasma Optical Emission Spectrometry (ICP-OES) as a standard reference method and laser-induced plasma spectroscopy (LIBS) as an innovative non-standard analytical method. What makes the LIBS superior from the other standard optical techniques is that it allows fast multi-elemental analysis without prior sample preparation, leads to minimal sample damage, and is considered almost non-destructive, this method is also by the principles of green analytical chemistry, which means that it does not use toxic reagents and therefore no chemical waste [4]. The results of these two methods were compared, to examine the possibility of using laser-induced plasma spectroscopy as an alternative green analytical technology for quantitative analysis of sunflower husk as a biosorbent and evaluation of biosorption efficiency as a function of contact time.",
publisher = "Belgrade : Serbian Chemical Society",
journal = "21st European Meeting on Environmental Chemistry : Book of Abstracts",
title = "Comparative Study of Removal Efficiency for Ni and Cd from Industrial Wastewater and Aqueous Solution by Sunflower Husk Using ICP-OES and LIBS",
pages = "100-100",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12758"
}

Radenković, M., Petrović, J., Momčilović, M., Živković, S., Relić, D.,& Popović, A. R.. (2021). Comparative Study of Removal Efficiency for Ni and Cd from Industrial Wastewater and Aqueous Solution by Sunflower Husk Using ICP-OES and LIBS. in 21st European Meeting on Environmental Chemistry : Book of Abstracts
Belgrade : Serbian Chemical Society., 100-100.
https://hdl.handle.net/21.15107/rcub_vinar_12758

Radenković M, Petrović J, Momčilović M, Živković S, Relić D, Popović AR. Comparative Study of Removal Efficiency for Ni and Cd from Industrial Wastewater and Aqueous Solution by Sunflower Husk Using ICP-OES and LIBS. in 21st European Meeting on Environmental Chemistry : Book of Abstracts. 2021;:100-100.
https://hdl.handle.net/21.15107/rcub_vinar_12758 .

Radenković, Marina, Petrović, Jelena, Momčilović, Miloš, Živković, Sanja, Relić, Dubravka, Popović, Aleksandar R., "Comparative Study of Removal Efficiency for Ni and Cd from Industrial Wastewater and Aqueous Solution by Sunflower Husk Using ICP-OES and LIBS" in 21st European Meeting on Environmental Chemistry : Book of Abstracts (2021):100-100,
https://hdl.handle.net/21.15107/rcub_vinar_12758 .

TY  - JOUR
AU  - Petrović, Jelena
AU  - Simić, Marija
AU  - Mihajlović, Marija
AU  - Koprivica, Marija
AU  - Kojić, Marija
AU  - Nuić, Ivona
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10170
AB  - In recent decades, massive exploitation of fossil fuels caused a growing demand for the production of energies from renewable sources. Hydrochar obtained from waste biomass via hydrothermal carbonization (HTC) possesses good potentials as a biofuel. Therefore, we performed HTC of corn cob, paulownia leaves, and olive pomace at different temperatures (180, 220, and 260oC). The main goal of this study was to comparatively evaluate the influence of HTC conditions on the structure and fuel characteristics of the obtained solids. The results showed that the yields of hydrochar decrease significantly with increasing temperature in all samples. The carbon content and higher heating value increased and reached the highest values in hydrochars obtained at 260°C, while the content of volatile matter decreased. Furthermore, the Van Krevelen diagram reveals that the transformation of feedstock to lignite-like products upon HTC was achieved. In this study, the results showed that processes of dehydration and decarboxylation during HTC provoke intensive biomass transformation and that hydrochars obtained at higher temperatures have significantly enhanced fuel properties and fewer volatiles compared to the feedstock.
T2  - Hemijska industrija
T1  - Upgrading fuel potentials of waste biomass via hydrothermal carbonization
VL  - 75
IS  - 5
SP  - 297
EP  - 305
DO  - 10.2298/HEMIND210507025P
ER  - 

@article{
author = "Petrović, Jelena and Simić, Marija and Mihajlović, Marija and Koprivica, Marija and Kojić, Marija and Nuić, Ivona",
year = "2021",
abstract = "In recent decades, massive exploitation of fossil fuels caused a growing demand for the production of energies from renewable sources. Hydrochar obtained from waste biomass via hydrothermal carbonization (HTC) possesses good potentials as a biofuel. Therefore, we performed HTC of corn cob, paulownia leaves, and olive pomace at different temperatures (180, 220, and 260oC). The main goal of this study was to comparatively evaluate the influence of HTC conditions on the structure and fuel characteristics of the obtained solids. The results showed that the yields of hydrochar decrease significantly with increasing temperature in all samples. The carbon content and higher heating value increased and reached the highest values in hydrochars obtained at 260°C, while the content of volatile matter decreased. Furthermore, the Van Krevelen diagram reveals that the transformation of feedstock to lignite-like products upon HTC was achieved. In this study, the results showed that processes of dehydration and decarboxylation during HTC provoke intensive biomass transformation and that hydrochars obtained at higher temperatures have significantly enhanced fuel properties and fewer volatiles compared to the feedstock.",
journal = "Hemijska industrija",
title = "Upgrading fuel potentials of waste biomass via hydrothermal carbonization",
volume = "75",
number = "5",
pages = "297-305",
doi = "10.2298/HEMIND210507025P"
}

Petrović, J., Simić, M., Mihajlović, M., Koprivica, M., Kojić, M.,& Nuić, I.. (2021). Upgrading fuel potentials of waste biomass via hydrothermal carbonization. in Hemijska industrija, 75(5), 297-305.
https://doi.org/10.2298/HEMIND210507025P

Petrović J, Simić M, Mihajlović M, Koprivica M, Kojić M, Nuić I. Upgrading fuel potentials of waste biomass via hydrothermal carbonization. in Hemijska industrija. 2021;75(5):297-305.
doi:10.2298/HEMIND210507025P .

Petrović, Jelena, Simić, Marija, Mihajlović, Marija, Koprivica, Marija, Kojić, Marija, Nuić, Ivona, "Upgrading fuel potentials of waste biomass via hydrothermal carbonization" in Hemijska industrija, 75, no. 5 (2021):297-305,
https://doi.org/10.2298/HEMIND210507025P . .

TY  - JOUR
AU  - Mihajlović, Marija
AU  - Koprivica, Marija
AU  - Kojić, Marija
AU  - Nuić, Ivona
AU  - Petrović, Jelena
AU  - Simić, Marija
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10171
AB  - This article has been published under the category Technical paper instead of Original scientific paper by mistake made by the Editorial Office of the journal Hemijska industrija during the proofreading process. Apologies are offered to authors and readers of the journal Hemijska industrija.
T2  - Hemijska industrija
T1  - Erratum to: Upgrading fuel potentials of waste biomass via hydrothermal carbonization (Hem. Ind. 75 (5) 297–305 (2021))
VL  - 75
IS  - 6
SP  - 381
EP  - 381
DO  - 10.2298/HEMIND211227032P
ER  - 

@article{
author = "Mihajlović, Marija and Koprivica, Marija and Kojić, Marija and Nuić, Ivona and Petrović, Jelena and Simić, Marija",
year = "2021",
abstract = "This article has been published under the category Technical paper instead of Original scientific paper by mistake made by the Editorial Office of the journal Hemijska industrija during the proofreading process. Apologies are offered to authors and readers of the journal Hemijska industrija.",
journal = "Hemijska industrija",
title = "Erratum to: Upgrading fuel potentials of waste biomass via hydrothermal carbonization (Hem. Ind. 75 (5) 297–305 (2021))",
volume = "75",
number = "6",
pages = "381-381",
doi = "10.2298/HEMIND211227032P"
}

Mihajlović, M., Koprivica, M., Kojić, M., Nuić, I., Petrović, J.,& Simić, M.. (2021). Erratum to: Upgrading fuel potentials of waste biomass via hydrothermal carbonization (Hem. Ind. 75 (5) 297–305 (2021)). in Hemijska industrija, 75(6), 381-381.
https://doi.org/10.2298/HEMIND211227032P

Mihajlović M, Koprivica M, Kojić M, Nuić I, Petrović J, Simić M. Erratum to: Upgrading fuel potentials of waste biomass via hydrothermal carbonization (Hem. Ind. 75 (5) 297–305 (2021)). in Hemijska industrija. 2021;75(6):381-381.
doi:10.2298/HEMIND211227032P .

Mihajlović, Marija, Koprivica, Marija, Kojić, Marija, Nuić, Ivona, Petrović, Jelena, Simić, Marija, "Erratum to: Upgrading fuel potentials of waste biomass via hydrothermal carbonization (Hem. Ind. 75 (5) 297–305 (2021))" in Hemijska industrija, 75, no. 6 (2021):381-381,
https://doi.org/10.2298/HEMIND211227032P . .

TY  - CONF
AU  - Kragović, Milan M.
AU  - Stojmenović, Marija
AU  - Petrović, Jelena T.
AU  - Loredo, Jorge
AU  - Pašalić, Snežana
AU  - Nedeljković, Andrijana
AU  - Ristović, Ivica
PY  - 2019
UR  - https://linkinghub.elsevier.com/retrieve/pii/S2351978919302513
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8198
AB  - In this paper influence of alginate encapsulation on point of zero charge (pH pzc ) and thermodynamic properties of the natural and Fe(III)- modified zeolite were investigated. The pH pzc was determined by using 0.1000 g of the samples and 50 cm 3 of the solution containing KNO 3 in concentrations of 0.0001-0.01 mol/dm 3 for initial pH (pH i ) in range between 2 and 12. The obtained pH pzc were 6.2 for natural (NZA) and 6.5 for modified zeolite encapsulated with alginate (FeA). Influence of the temperature on the adsorption of lead was investigated for different initial lead ions concentrations (180-3200 mgPb 2+ /dm 3 ) and temperatures of 30, 40 and 60 o C. For both adsorbents, adsorption of lead ions increased with increasing its initial concentration as well as with increasing of the temperature. Also, the best fits of the experimental data were obtained by Freundlich isotherm. The temperature had positive influence adsorption and removal of lead ions increased with increasing its initial concentration as well as with increasing of the temperature. The thermodynamic parameters (the standard free energy of adsorption, standard enthalpy and standard entropy) were also determined. The results showed that lead ions removal from aqueous solutions is much favourable for FeA then NZA. © 2019 The Authors.
C3  - Procedia Manufacturing
T1  - Influence of Alginate Encapsulation on Point of Zero Charge (pHpzc) and Thermodynamic Properties of the Natural and Fe(III) - Modified Zeolite
VL  - 32
SP  - 286
EP  - 293
DO  - 10.1016/j.promfg.2019.02.216
ER  - 

@conference{
author = "Kragović, Milan M. and Stojmenović, Marija and Petrović, Jelena T. and Loredo, Jorge and Pašalić, Snežana and Nedeljković, Andrijana and Ristović, Ivica",
year = "2019",
abstract = "In this paper influence of alginate encapsulation on point of zero charge (pH pzc ) and thermodynamic properties of the natural and Fe(III)- modified zeolite were investigated. The pH pzc was determined by using 0.1000 g of the samples and 50 cm 3 of the solution containing KNO 3 in concentrations of 0.0001-0.01 mol/dm 3 for initial pH (pH i ) in range between 2 and 12. The obtained pH pzc were 6.2 for natural (NZA) and 6.5 for modified zeolite encapsulated with alginate (FeA). Influence of the temperature on the adsorption of lead was investigated for different initial lead ions concentrations (180-3200 mgPb 2+ /dm 3 ) and temperatures of 30, 40 and 60 o C. For both adsorbents, adsorption of lead ions increased with increasing its initial concentration as well as with increasing of the temperature. Also, the best fits of the experimental data were obtained by Freundlich isotherm. The temperature had positive influence adsorption and removal of lead ions increased with increasing its initial concentration as well as with increasing of the temperature. The thermodynamic parameters (the standard free energy of adsorption, standard enthalpy and standard entropy) were also determined. The results showed that lead ions removal from aqueous solutions is much favourable for FeA then NZA. © 2019 The Authors.",
journal = "Procedia Manufacturing",
title = "Influence of Alginate Encapsulation on Point of Zero Charge (pHpzc) and Thermodynamic Properties of the Natural and Fe(III) - Modified Zeolite",
volume = "32",
pages = "286-293",
doi = "10.1016/j.promfg.2019.02.216"
}

Kragović, M. M., Stojmenović, M., Petrović, J. T., Loredo, J., Pašalić, S., Nedeljković, A.,& Ristović, I.. (2019). Influence of Alginate Encapsulation on Point of Zero Charge (pHpzc) and Thermodynamic Properties of the Natural and Fe(III) - Modified Zeolite. in Procedia Manufacturing, 32, 286-293.
https://doi.org/10.1016/j.promfg.2019.02.216

Kragović MM, Stojmenović M, Petrović JT, Loredo J, Pašalić S, Nedeljković A, Ristović I. Influence of Alginate Encapsulation on Point of Zero Charge (pHpzc) and Thermodynamic Properties of the Natural and Fe(III) - Modified Zeolite. in Procedia Manufacturing. 2019;32:286-293.
doi:10.1016/j.promfg.2019.02.216 .

Kragović, Milan M., Stojmenović, Marija, Petrović, Jelena T., Loredo, Jorge, Pašalić, Snežana, Nedeljković, Andrijana, Ristović, Ivica, "Influence of Alginate Encapsulation on Point of Zero Charge (pHpzc) and Thermodynamic Properties of the Natural and Fe(III) - Modified Zeolite" in Procedia Manufacturing, 32 (2019):286-293,
https://doi.org/10.1016/j.promfg.2019.02.216 . .