TY  - JOUR
AU  - Egerić, Marija
AU  - Matović, Ljiljana
AU  - Savić, Marjetka
AU  - Stanković, Srboljub
AU  - Wu, Yi-nan
AU  - Li, Fengting
AU  - Vujasin, Radojka
PY  - 2024
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/13025
AB  - Different organic compounds in aquatic bodies have been recognized as an emerging issue in Environmental Chemistry. The gamma irradiation technique, as one of the advanced oxidation techniques, has been widely investigated in past decades as a technique for the degradation of organic molecules, such as dyes, pesticides, and pharmaceuticals, which show high persistence to degradation. This review gives an overview of what has been achieved so far using gamma irradiation for different organic compound degradations giving an explanation of the mechanisms of degradations as well as the corresponding limitations and drawbacks, and the answer to why this technique has not yet widely come to life. Also, a new approach, recently presented in the literature, regards coupling gamma irradiation with other techniques and materials, as the latest trend. A critical evaluation of the most recent advances achieved by coupling gamma irradiation with other methods and/or materials, as well as describing the reaction mechanisms of coupling, that is, additional destabilization of molecules achieved by coupling, emphasizing the advantages of the newly proposed approach. Finally, it was concluded what are the perspectives and future directions towards its commercialization since this technique can contribute to waste minimization i.e. not waste transfer to other media. Summarizing and generalization the model of radiolytic degradation with and without coupling with other techniques can further guide designing a new modular, mobile method that will satisfy all the needs for its wide commercial application.
T2  - Chemosphere
T1  - Gamma irradiation induced degradation of organic pollutants: Recent advances and future perspective
VL  - 352
SP  - 141437
DO  - 10.1016/j.chemosphere.2024.141437
ER  - 

@article{
author = "Egerić, Marija and Matović, Ljiljana and Savić, Marjetka and Stanković, Srboljub and Wu, Yi-nan and Li, Fengting and Vujasin, Radojka",
year = "2024",
abstract = "Different organic compounds in aquatic bodies have been recognized as an emerging issue in Environmental Chemistry. The gamma irradiation technique, as one of the advanced oxidation techniques, has been widely investigated in past decades as a technique for the degradation of organic molecules, such as dyes, pesticides, and pharmaceuticals, which show high persistence to degradation. This review gives an overview of what has been achieved so far using gamma irradiation for different organic compound degradations giving an explanation of the mechanisms of degradations as well as the corresponding limitations and drawbacks, and the answer to why this technique has not yet widely come to life. Also, a new approach, recently presented in the literature, regards coupling gamma irradiation with other techniques and materials, as the latest trend. A critical evaluation of the most recent advances achieved by coupling gamma irradiation with other methods and/or materials, as well as describing the reaction mechanisms of coupling, that is, additional destabilization of molecules achieved by coupling, emphasizing the advantages of the newly proposed approach. Finally, it was concluded what are the perspectives and future directions towards its commercialization since this technique can contribute to waste minimization i.e. not waste transfer to other media. Summarizing and generalization the model of radiolytic degradation with and without coupling with other techniques can further guide designing a new modular, mobile method that will satisfy all the needs for its wide commercial application.",
journal = "Chemosphere",
title = "Gamma irradiation induced degradation of organic pollutants: Recent advances and future perspective",
volume = "352",
pages = "141437",
doi = "10.1016/j.chemosphere.2024.141437"
}

Egerić, M., Matović, L., Savić, M., Stanković, S., Wu, Y., Li, F.,& Vujasin, R.. (2024). Gamma irradiation induced degradation of organic pollutants: Recent advances and future perspective. in Chemosphere, 352, 141437.
https://doi.org/10.1016/j.chemosphere.2024.141437

Egerić M, Matović L, Savić M, Stanković S, Wu Y, Li F, Vujasin R. Gamma irradiation induced degradation of organic pollutants: Recent advances and future perspective. in Chemosphere. 2024;352:141437.
doi:10.1016/j.chemosphere.2024.141437 .

Egerić, Marija, Matović, Ljiljana, Savić, Marjetka, Stanković, Srboljub, Wu, Yi-nan, Li, Fengting, Vujasin, Radojka, "Gamma irradiation induced degradation of organic pollutants: Recent advances and future perspective" in Chemosphere, 352 (2024):141437,
https://doi.org/10.1016/j.chemosphere.2024.141437 . .

TY  - CONF
AU  - Matović, Ljiljana
AU  - Egerić, Marija
AU  - Kolarić, Ljubiša
AU  - Petrović, Dimitrije
AU  - Savić-Biserčić, Marjetka
AU  - Stanković, Srboljub
AU  - Vujasin, Radojka
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12253
AB  - Worldwide water bodies have been affected by toxic effluents of industries, such as organic compounds, and are continuously deteriorating the environment as industrialization coupled with urbanization has caused the excess release of wastewater. Finding a proper wastewater treatment is of the greatest importance. Gamma irradiation technique, as one of the advanced oxidation techniques, has been widely investigated as a technique for degradation of organic molecules. It has been shown that this method has the potential to be effectively applied for degradation of toxic colorants which show high persistence to degradation. Although the literature abounds with degradation studies of different organic molecules using a wide range of irradiation dozes and doze rates, according to available data, no such irradiation facility exists, mostly due to high doses and expensive equipment needed to be installed. A mechanism of degradation was proposed: generated reactive species non-specifically react with organic compounds leading to their partial or complete degradation. In recent advances, gamma irradiation was coupled with other wastewater treatment technologies to reduce needed doses. Coupling of gamma irradiation was achieved with addition of oxidants which resulted in increased number of reactive species, then coupling with solid matrices, biological treatment, which all lead to additional destabilization of organic molecules. This way, combining different methods of wastewater purification opens new possibilities and may enable the design of a new modular, or even mobile, plant that will satisfy all the needs for its wide commercial application. As a result, a sustainable development goal can be more easily reachable, i.e., sustainable water resources management in future industrial zones and smart cities may be possible without generation of waste transfer into another media.
PB  - Leskovac : Faculty of Technology, University of Niš
C3  - 15th International symposium „Novel technologies and sustainable development" : Book of Abstracts
T1  - Degradation of Organic Pollutants by Gamma Irradiation: Future Perspective
SP  - 116
EP  - 116
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12253
ER  - 

@conference{
author = "Matović, Ljiljana and Egerić, Marija and Kolarić, Ljubiša and Petrović, Dimitrije and Savić-Biserčić, Marjetka and Stanković, Srboljub and Vujasin, Radojka",
year = "2023",
abstract = "Worldwide water bodies have been affected by toxic effluents of industries, such as organic compounds, and are continuously deteriorating the environment as industrialization coupled with urbanization has caused the excess release of wastewater. Finding a proper wastewater treatment is of the greatest importance. Gamma irradiation technique, as one of the advanced oxidation techniques, has been widely investigated as a technique for degradation of organic molecules. It has been shown that this method has the potential to be effectively applied for degradation of toxic colorants which show high persistence to degradation. Although the literature abounds with degradation studies of different organic molecules using a wide range of irradiation dozes and doze rates, according to available data, no such irradiation facility exists, mostly due to high doses and expensive equipment needed to be installed. A mechanism of degradation was proposed: generated reactive species non-specifically react with organic compounds leading to their partial or complete degradation. In recent advances, gamma irradiation was coupled with other wastewater treatment technologies to reduce needed doses. Coupling of gamma irradiation was achieved with addition of oxidants which resulted in increased number of reactive species, then coupling with solid matrices, biological treatment, which all lead to additional destabilization of organic molecules. This way, combining different methods of wastewater purification opens new possibilities and may enable the design of a new modular, or even mobile, plant that will satisfy all the needs for its wide commercial application. As a result, a sustainable development goal can be more easily reachable, i.e., sustainable water resources management in future industrial zones and smart cities may be possible without generation of waste transfer into another media.",
publisher = "Leskovac : Faculty of Technology, University of Niš",
journal = "15th International symposium „Novel technologies and sustainable development" : Book of Abstracts",
title = "Degradation of Organic Pollutants by Gamma Irradiation: Future Perspective",
pages = "116-116",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12253"
}

Matović, L., Egerić, M., Kolarić, L., Petrović, D., Savić-Biserčić, M., Stanković, S.,& Vujasin, R.. (2023). Degradation of Organic Pollutants by Gamma Irradiation: Future Perspective. in 15th International symposium „Novel technologies and sustainable development" : Book of Abstracts
Leskovac : Faculty of Technology, University of Niš., 116-116.
https://hdl.handle.net/21.15107/rcub_vinar_12253

Matović L, Egerić M, Kolarić L, Petrović D, Savić-Biserčić M, Stanković S, Vujasin R. Degradation of Organic Pollutants by Gamma Irradiation: Future Perspective. in 15th International symposium „Novel technologies and sustainable development" : Book of Abstracts. 2023;:116-116.
https://hdl.handle.net/21.15107/rcub_vinar_12253 .

Matović, Ljiljana, Egerić, Marija, Kolarić, Ljubiša, Petrović, Dimitrije, Savić-Biserčić, Marjetka, Stanković, Srboljub, Vujasin, Radojka, "Degradation of Organic Pollutants by Gamma Irradiation: Future Perspective" in 15th International symposium „Novel technologies and sustainable development" : Book of Abstracts (2023):116-116,
https://hdl.handle.net/21.15107/rcub_vinar_12253 .

TY  - CONF
AU  - Egerić, Marija
AU  - Nešić, Aleksandra
AU  - Pilić, Branka
AU  - Wu, Yi-nan
AU  - Devečerski, Aleksandar
AU  - Vujasin, Radojka
AU  - Matović, Ljiljana
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12251
AB  - Pollution of the environment is a serious issue nowadays, and finding a proper wastewater treatment is only small part of challenges that humans are facing. In order to find innovative ways for wastewater treatment, different techniques are applied, which lead to the production of new materials, such as ones made of polymeric nanofibers and materials with photocatalytic properties. In this study, nanofibers composite, synthetized from polyamide (PA) and UiO-66 Metal Organic Framework (MOF) by electrospinning method was used for degradation of Congo red dye from 10 ppm aqueous solution in batch conditions. Ultra-thin PA nanofiber membranes were produced with different ratios of MOF - 0.5 wt.%, 1 wt.%, 2 wt.% and 10 wt.% and prior the experiments, in order to be easily applied and removed from the solution, cut in the rectangular shape 1cm x 2 cm. FTIR, XRD and SEM are used for characterization of selected composites, prior and after sorption and photocatalytic experiments, while for determination of dye concentration UV-ViS spectrophotometer was used. The best performance in Congo red degradation was shown by membranes which contained 1 wt.% of MOF. FTIR spectra have shown that, upon the introduction of MOF particles into the PA fiber, reduction of all the peaks by the same amount in intensity indicates no interaction between MOF additive and PA matrix. Further, a new peak appeared after sorption at 590 cm-1 and disappeared after dye degradation induced by sun irradiation. XRD analysis has shown that there are no observable microstructural changes in composites upon sorption and cycling. Decreasing of the band gap of composite compared to pure MOF indicated increased photocatalytic activity. Reusability of composite membranes was investigated by performing experiments in multiple cycles, and results have shown that electrospun UiO-66/polyamide membranes have no significant changes in degradation efficiency of Congo red upon 4 cycles.
PB  - Leskovac : Faculty of Technology, University of Niš
C3  - 15th International symposium „Novel technologies and sustainable development" : Book of Abstracts
T1  - Mechanism of Congo Red Dye Photocatalytic Degradation on Metal Organic Framework/Polyamide Electrospun Nanofiber
SP  - 98
EP  - 98
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12251
ER  - 

@conference{
author = "Egerić, Marija and Nešić, Aleksandra and Pilić, Branka and Wu, Yi-nan and Devečerski, Aleksandar and Vujasin, Radojka and Matović, Ljiljana",
year = "2023",
abstract = "Pollution of the environment is a serious issue nowadays, and finding a proper wastewater treatment is only small part of challenges that humans are facing. In order to find innovative ways for wastewater treatment, different techniques are applied, which lead to the production of new materials, such as ones made of polymeric nanofibers and materials with photocatalytic properties. In this study, nanofibers composite, synthetized from polyamide (PA) and UiO-66 Metal Organic Framework (MOF) by electrospinning method was used for degradation of Congo red dye from 10 ppm aqueous solution in batch conditions. Ultra-thin PA nanofiber membranes were produced with different ratios of MOF - 0.5 wt.%, 1 wt.%, 2 wt.% and 10 wt.% and prior the experiments, in order to be easily applied and removed from the solution, cut in the rectangular shape 1cm x 2 cm. FTIR, XRD and SEM are used for characterization of selected composites, prior and after sorption and photocatalytic experiments, while for determination of dye concentration UV-ViS spectrophotometer was used. The best performance in Congo red degradation was shown by membranes which contained 1 wt.% of MOF. FTIR spectra have shown that, upon the introduction of MOF particles into the PA fiber, reduction of all the peaks by the same amount in intensity indicates no interaction between MOF additive and PA matrix. Further, a new peak appeared after sorption at 590 cm-1 and disappeared after dye degradation induced by sun irradiation. XRD analysis has shown that there are no observable microstructural changes in composites upon sorption and cycling. Decreasing of the band gap of composite compared to pure MOF indicated increased photocatalytic activity. Reusability of composite membranes was investigated by performing experiments in multiple cycles, and results have shown that electrospun UiO-66/polyamide membranes have no significant changes in degradation efficiency of Congo red upon 4 cycles.",
publisher = "Leskovac : Faculty of Technology, University of Niš",
journal = "15th International symposium „Novel technologies and sustainable development" : Book of Abstracts",
title = "Mechanism of Congo Red Dye Photocatalytic Degradation on Metal Organic Framework/Polyamide Electrospun Nanofiber",
pages = "98-98",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12251"
}

Egerić, M., Nešić, A., Pilić, B., Wu, Y., Devečerski, A., Vujasin, R.,& Matović, L.. (2023). Mechanism of Congo Red Dye Photocatalytic Degradation on Metal Organic Framework/Polyamide Electrospun Nanofiber. in 15th International symposium „Novel technologies and sustainable development" : Book of Abstracts
Leskovac : Faculty of Technology, University of Niš., 98-98.
https://hdl.handle.net/21.15107/rcub_vinar_12251

Egerić M, Nešić A, Pilić B, Wu Y, Devečerski A, Vujasin R, Matović L. Mechanism of Congo Red Dye Photocatalytic Degradation on Metal Organic Framework/Polyamide Electrospun Nanofiber. in 15th International symposium „Novel technologies and sustainable development" : Book of Abstracts. 2023;:98-98.
https://hdl.handle.net/21.15107/rcub_vinar_12251 .

Egerić, Marija, Nešić, Aleksandra, Pilić, Branka, Wu, Yi-nan, Devečerski, Aleksandar, Vujasin, Radojka, Matović, Ljiljana, "Mechanism of Congo Red Dye Photocatalytic Degradation on Metal Organic Framework/Polyamide Electrospun Nanofiber" in 15th International symposium „Novel technologies and sustainable development" : Book of Abstracts (2023):98-98,
https://hdl.handle.net/21.15107/rcub_vinar_12251 .

TY  - CONF
AU  - Egerić, Marija
AU  - Devečerski, Aleksandar
AU  - Matović, Ljiljana
AU  - Kumrić, Ksenija
AU  - Petrović, Đorđe Ž.
AU  - Vujasin, Radojka
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12085
AB  - Rapid growth of human population has led to increased water demand by various industries and production of large amount of wastewater. Textile, leather, paper, and plastics industries wastewater, which contains organic pollutants such as dyes, needs a proper treatment in order to be safely discharged into the environment, therefore, new methods are being developed. This research is based on investigation of photocatalytic degradation of an azo-type dye Congo Red (CR) by using powdered UiO-66 type MOF (Metal Organic Framework), activated carbon (AC) and their composite powder mixtures made with different MOF/AC ratios. Additionally, this research includes investigation of renewability of these materials in several experimental cycles. Experiments were performed in batch conditions, samples were exposed to solar light irradiation, then centrifuged to remove solid particles and in order to determine the concentration of the remaining dye, solutions were analyzed by UV-ViS spectrophotometer. Renewability of the photocatalysts used in experiments was investigated by repeating this process three times, with catalysts dried at 50 °C between cycles. Results have shown that pure MOF has excellent and almost identical photocatalytical efficiency in every cycle, compared to all MOF/AC composites and pure AC, probably due to the saturation of available adsorption sites in AC. CR removal efficiency and renewability of various composites depends on MOF/AC ratio, therefore, the most efficient composites are the ones where MOF content varies from 25 wt. % up to 100 wt. %. Samples with MOF content 50 - 100 wt. % have shown excellent renewability, while composites where AC is more dominant (95 - 100 wt. %) have shown almost none. Among the composites examined in this paper, the one with MOF/AC ratio of 50/50 has shown the best cost/performance ratio in removal of Congo red dye from aqueous solution.
PB  - Portugal : University of Aveiro
C3  - YCN 2023 : Young Ceramists Network Workshop : Book of Abstracts
T1  - Assessment of optimum ratio of Metal Organic Framework and activated carbon in composites for photocatalytic removal of Congo Red dye
SP  - 34
EP  - 34
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12085
ER  - 

@conference{
author = "Egerić, Marija and Devečerski, Aleksandar and Matović, Ljiljana and Kumrić, Ksenija and Petrović, Đorđe Ž. and Vujasin, Radojka",
year = "2023",
abstract = "Rapid growth of human population has led to increased water demand by various industries and production of large amount of wastewater. Textile, leather, paper, and plastics industries wastewater, which contains organic pollutants such as dyes, needs a proper treatment in order to be safely discharged into the environment, therefore, new methods are being developed. This research is based on investigation of photocatalytic degradation of an azo-type dye Congo Red (CR) by using powdered UiO-66 type MOF (Metal Organic Framework), activated carbon (AC) and their composite powder mixtures made with different MOF/AC ratios. Additionally, this research includes investigation of renewability of these materials in several experimental cycles. Experiments were performed in batch conditions, samples were exposed to solar light irradiation, then centrifuged to remove solid particles and in order to determine the concentration of the remaining dye, solutions were analyzed by UV-ViS spectrophotometer. Renewability of the photocatalysts used in experiments was investigated by repeating this process three times, with catalysts dried at 50 °C between cycles. Results have shown that pure MOF has excellent and almost identical photocatalytical efficiency in every cycle, compared to all MOF/AC composites and pure AC, probably due to the saturation of available adsorption sites in AC. CR removal efficiency and renewability of various composites depends on MOF/AC ratio, therefore, the most efficient composites are the ones where MOF content varies from 25 wt. % up to 100 wt. %. Samples with MOF content 50 - 100 wt. % have shown excellent renewability, while composites where AC is more dominant (95 - 100 wt. %) have shown almost none. Among the composites examined in this paper, the one with MOF/AC ratio of 50/50 has shown the best cost/performance ratio in removal of Congo red dye from aqueous solution.",
publisher = "Portugal : University of Aveiro",
journal = "YCN 2023 : Young Ceramists Network Workshop : Book of Abstracts",
title = "Assessment of optimum ratio of Metal Organic Framework and activated carbon in composites for photocatalytic removal of Congo Red dye",
pages = "34-34",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12085"
}

Egerić, M., Devečerski, A., Matović, L., Kumrić, K., Petrović, Đ. Ž.,& Vujasin, R.. (2023). Assessment of optimum ratio of Metal Organic Framework and activated carbon in composites for photocatalytic removal of Congo Red dye. in YCN 2023 : Young Ceramists Network Workshop : Book of Abstracts
Portugal : University of Aveiro., 34-34.
https://hdl.handle.net/21.15107/rcub_vinar_12085

Egerić M, Devečerski A, Matović L, Kumrić K, Petrović ĐŽ, Vujasin R. Assessment of optimum ratio of Metal Organic Framework and activated carbon in composites for photocatalytic removal of Congo Red dye. in YCN 2023 : Young Ceramists Network Workshop : Book of Abstracts. 2023;:34-34.
https://hdl.handle.net/21.15107/rcub_vinar_12085 .

Egerić, Marija, Devečerski, Aleksandar, Matović, Ljiljana, Kumrić, Ksenija, Petrović, Đorđe Ž., Vujasin, Radojka, "Assessment of optimum ratio of Metal Organic Framework and activated carbon in composites for photocatalytic removal of Congo Red dye" in YCN 2023 : Young Ceramists Network Workshop : Book of Abstracts (2023):34-34,
https://hdl.handle.net/21.15107/rcub_vinar_12085 .

TY  - JOUR
AU  - Petrović, Đorđe
AU  - Matović, Ljiljana
AU  - Egerić, Marija
AU  - Omerašević, Mia
AU  - Vujasin, Radojka
AU  - Ilić-Stojanović, Snežana
AU  - Krstić, Sanja
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11730
AB  - Technetium-99 (99Tc), as one of the important high-yield fission products, is a significant threat to the environment and human health. It is produced in large amounts by nuclear fission of 235U or 239Pu in nuclear reactions, though the quantity of Tc produced by the spontaneous fission of 238U or by decay of 99Mo in the nature which is very small. 99Tc in the environment originates from nuclear weapons tests, discharges from nuclear power plants, nuclear medicine and radiobiology. These activities generate large volumes of low and intermediate radioactive waste which can cause a significant impact on the environment if disposed without suitable treatment. Immobilization of 99Tc into a relatively small volume waste is vital for long term permanent disposal. High mobility and long half-life of 99Tc considered to be one of the most important radionuclides in safety assessment of environmental radioactivity as well as nuclear waste management. Effective removal of radioactive technetium (99Tc) from contaminated water is of enormous importance from an environmental and public health perspective, yet many current methodologies are highly ineffective. This paper summarizes physico-chemical separation procedures emphasizing those that are the most used in practice. Classic sorbents such as activated carbons, ion exchange resins as well, as new materials, such as metal−organic frameworks and graphene based membranes are described in the paper.
T2  - Journal of Innovative Materials in Extreme Conditions
T1  - The Origin of 99Tc in the Environment and Its Removal
VL  - 4
IS  - 1
SP  - 10
EP  - 21
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11730
ER  - 

@article{
author = "Petrović, Đorđe and Matović, Ljiljana and Egerić, Marija and Omerašević, Mia and Vujasin, Radojka and Ilić-Stojanović, Snežana and Krstić, Sanja",
year = "2023",
abstract = "Technetium-99 (99Tc), as one of the important high-yield fission products, is a significant threat to the environment and human health. It is produced in large amounts by nuclear fission of 235U or 239Pu in nuclear reactions, though the quantity of Tc produced by the spontaneous fission of 238U or by decay of 99Mo in the nature which is very small. 99Tc in the environment originates from nuclear weapons tests, discharges from nuclear power plants, nuclear medicine and radiobiology. These activities generate large volumes of low and intermediate radioactive waste which can cause a significant impact on the environment if disposed without suitable treatment. Immobilization of 99Tc into a relatively small volume waste is vital for long term permanent disposal. High mobility and long half-life of 99Tc considered to be one of the most important radionuclides in safety assessment of environmental radioactivity as well as nuclear waste management. Effective removal of radioactive technetium (99Tc) from contaminated water is of enormous importance from an environmental and public health perspective, yet many current methodologies are highly ineffective. This paper summarizes physico-chemical separation procedures emphasizing those that are the most used in practice. Classic sorbents such as activated carbons, ion exchange resins as well, as new materials, such as metal−organic frameworks and graphene based membranes are described in the paper.",
journal = "Journal of Innovative Materials in Extreme Conditions",
title = "The Origin of 99Tc in the Environment and Its Removal",
volume = "4",
number = "1",
pages = "10-21",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11730"
}

Petrović, Đ., Matović, L., Egerić, M., Omerašević, M., Vujasin, R., Ilić-Stojanović, S.,& Krstić, S.. (2023). The Origin of 99Tc in the Environment and Its Removal. in Journal of Innovative Materials in Extreme Conditions, 4(1), 10-21.
https://hdl.handle.net/21.15107/rcub_vinar_11730

Petrović Đ, Matović L, Egerić M, Omerašević M, Vujasin R, Ilić-Stojanović S, Krstić S. The Origin of 99Tc in the Environment and Its Removal. in Journal of Innovative Materials in Extreme Conditions. 2023;4(1):10-21.
https://hdl.handle.net/21.15107/rcub_vinar_11730 .

Petrović, Đorđe, Matović, Ljiljana, Egerić, Marija, Omerašević, Mia, Vujasin, Radojka, Ilić-Stojanović, Snežana, Krstić, Sanja, "The Origin of 99Tc in the Environment and Its Removal" in Journal of Innovative Materials in Extreme Conditions, 4, no. 1 (2023):10-21,
https://hdl.handle.net/21.15107/rcub_vinar_11730 .

TY  - CONF
AU  - Vujasin, Radojka
AU  - Kumrić, Ksenija
AU  - Devečerski, Aleksandar
AU  - Omerašević, Mia
AU  - Egerić, Marija
AU  - Petrović, Đorđe Ž.
AU  - Matović, Ljiljana
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12083
AB  - Dyes and pigments are used by many industries to color their products. In this study, we applied two different kinds of waste materials: used radioactive sources and carbon waste tire char (WTC) to study their simultaneous effect of irradiation/adsorption on dye degradation. Irradiation of methylene blue (MB) by high energy γ radiation derived from used radioactive sources in the presence of carbon based material made of waste tire granules caused enhanced decoloration of the MB. Delivered dose of  radiations differ depending on the type of isotope. The best decoloration was achieved using 60Co isotope. Complete decoloration of 20 ml of MB solution having concentration of 100 mg dm-3 of WTC was achieved with delivered doze of only 60 Gy. Decoloration of 90% was achieved after only 20 min while complete decoloration of MB solution (100%) was obtained in the irradiated samples after only 100 min. Processes that use ionizing radiation (α, β and γ) for decoloration of dyes are characterized as advanced oxidation processes which normally utilize a strong oxidizing species to break down the macromolecules. High energy radiation in water medium can produce radiolysis of water i.e. formation of several active species such as H2, H2O2, H+, OH− , eaq− , •OH and •H which are responsible for chemical reactions in water solutions. The significance of this approach is, except using waste materials for achieving enhanced degradation of organic pollutants in the solution, avoiding the need for safe disposal and storage of waste radioactive sources. Also, less waste material is generated at the end of the simultaneous irradiation/sorption process compared to the pure sorption process. Surface composition of WTC, needed to elucidate the key mechanism of synergism of MB degradation, during the simultaneous adsorption/irradiation was obtained using FTIR and XPS technique. OH-  ions, that originate from radiolysis of water induced by gamma irradiation and from the surface of WTC, play the crucial role in degradation of MB. MB molecule adsorbed at the surface of WTC is electronically reorganized and as a consequence degradated via the opening of the central aromatic ring containing both heteroatoms, S and N. OH-  ions produced by water radiolysis also cause degradation of MB molecules in the solution.The synergetic effect is a result of the attack of • OH radicals on electrostatic reorganized MB molecule adsorbed on surface of carbon material. Opening of central aromatic ring of MB firstly appeared in cleavage of the double C-S+ =C bond and then cleavage of double N=C bond.
PB  - Belgrade : Vinča Institute of Nuclear Sciences - National Institute of thе Republic of Serbia, University of Belgrade
PB  - Belgrade : Serbian Society for Innovative Materials in Extreme Conditions (SIM-EXTREME)
C3  - IMEC 2022 : 1st Intentational conference on innovativ materials in extreme conditions : Program and Book of abstracts
T1  - Water under extreme conditions: simultaneous gamma irradiation/carbon char adsorption resulted in improved methylene blue degradation
SP  - 56
EP  - 56
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12083
ER  - 

@conference{
author = "Vujasin, Radojka and Kumrić, Ksenija and Devečerski, Aleksandar and Omerašević, Mia and Egerić, Marija and Petrović, Đorđe Ž. and Matović, Ljiljana",
year = "2022",
abstract = "Dyes and pigments are used by many industries to color their products. In this study, we applied two different kinds of waste materials: used radioactive sources and carbon waste tire char (WTC) to study their simultaneous effect of irradiation/adsorption on dye degradation. Irradiation of methylene blue (MB) by high energy γ radiation derived from used radioactive sources in the presence of carbon based material made of waste tire granules caused enhanced decoloration of the MB. Delivered dose of  radiations differ depending on the type of isotope. The best decoloration was achieved using 60Co isotope. Complete decoloration of 20 ml of MB solution having concentration of 100 mg dm-3 of WTC was achieved with delivered doze of only 60 Gy. Decoloration of 90% was achieved after only 20 min while complete decoloration of MB solution (100%) was obtained in the irradiated samples after only 100 min. Processes that use ionizing radiation (α, β and γ) for decoloration of dyes are characterized as advanced oxidation processes which normally utilize a strong oxidizing species to break down the macromolecules. High energy radiation in water medium can produce radiolysis of water i.e. formation of several active species such as H2, H2O2, H+, OH− , eaq− , •OH and •H which are responsible for chemical reactions in water solutions. The significance of this approach is, except using waste materials for achieving enhanced degradation of organic pollutants in the solution, avoiding the need for safe disposal and storage of waste radioactive sources. Also, less waste material is generated at the end of the simultaneous irradiation/sorption process compared to the pure sorption process. Surface composition of WTC, needed to elucidate the key mechanism of synergism of MB degradation, during the simultaneous adsorption/irradiation was obtained using FTIR and XPS technique. OH-  ions, that originate from radiolysis of water induced by gamma irradiation and from the surface of WTC, play the crucial role in degradation of MB. MB molecule adsorbed at the surface of WTC is electronically reorganized and as a consequence degradated via the opening of the central aromatic ring containing both heteroatoms, S and N. OH-  ions produced by water radiolysis also cause degradation of MB molecules in the solution.The synergetic effect is a result of the attack of • OH radicals on electrostatic reorganized MB molecule adsorbed on surface of carbon material. Opening of central aromatic ring of MB firstly appeared in cleavage of the double C-S+ =C bond and then cleavage of double N=C bond.",
publisher = "Belgrade : Vinča Institute of Nuclear Sciences - National Institute of thе Republic of Serbia, University of Belgrade, Belgrade : Serbian Society for Innovative Materials in Extreme Conditions (SIM-EXTREME)",
journal = "IMEC 2022 : 1st Intentational conference on innovativ materials in extreme conditions : Program and Book of abstracts",
title = "Water under extreme conditions: simultaneous gamma irradiation/carbon char adsorption resulted in improved methylene blue degradation",
pages = "56-56",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12083"
}

Vujasin, R., Kumrić, K., Devečerski, A., Omerašević, M., Egerić, M., Petrović, Đ. Ž.,& Matović, L.. (2022). Water under extreme conditions: simultaneous gamma irradiation/carbon char adsorption resulted in improved methylene blue degradation. in IMEC 2022 : 1st Intentational conference on innovativ materials in extreme conditions : Program and Book of abstracts
Belgrade : Vinča Institute of Nuclear Sciences - National Institute of thе Republic of Serbia, University of Belgrade., 56-56.
https://hdl.handle.net/21.15107/rcub_vinar_12083

Vujasin R, Kumrić K, Devečerski A, Omerašević M, Egerić M, Petrović ĐŽ, Matović L. Water under extreme conditions: simultaneous gamma irradiation/carbon char adsorption resulted in improved methylene blue degradation. in IMEC 2022 : 1st Intentational conference on innovativ materials in extreme conditions : Program and Book of abstracts. 2022;:56-56.
https://hdl.handle.net/21.15107/rcub_vinar_12083 .

Vujasin, Radojka, Kumrić, Ksenija, Devečerski, Aleksandar, Omerašević, Mia, Egerić, Marija, Petrović, Đorđe Ž., Matović, Ljiljana, "Water under extreme conditions: simultaneous gamma irradiation/carbon char adsorption resulted in improved methylene blue degradation" in IMEC 2022 : 1st Intentational conference on innovativ materials in extreme conditions : Program and Book of abstracts (2022):56-56,
https://hdl.handle.net/21.15107/rcub_vinar_12083 .

TY  - CONF
AU  - Egerić, Marija
AU  - Kumrić, Ksenija
AU  - Vujasin, Radojka
AU  - Devečerski, Aleksandar
AU  - Krstić, Sanja
AU  - Matović, Ljiljana
AU  - Petrović, Đorđe Ž.
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12084
AB  - Rapid industrialization and increasing population have increased the water demand. Various wastes from industries and anthropogenic activities are discharged into aquatic bodies such as lakes, ponds, rivers, oceans. Therefore, focus is placed on the removal of the contamination from the wastewater. Organic pollutants gained extensive attention because of their toxicity, persistence and significant impacts on human health Among them, organic dyes are complex molecules and most of them are water-soluble, resistant to detergents and heat, exhibit poor biodegradability, etc. Azo dyes are used in about 70% of commercial dyes today, from textile and plastic to cosmetics and food. In this work, removal of azo-type dye Congo Red (CR) from water was performed by using UiO-66 type MOF (Metal Organic Framework), activated carbon (AC) and their composite powder mixture (MOF/AC = 50/50 wt.%). Samples were exposed to solar light irradiation for 1h and 2.5 h, respectively, centrifuged to remove solid particles, and solutions were analyzed by UV-ViS spectrophotometer in order to determine the concentration of the remaining dye. Process was repeated three times in order to explore the renewability of the photocatalysts used, with catalysts dried at 50 °C between cycles. Results revieled superior photocatalytic cycling performance of the MOF compared to the MOF/AC composite, while AC showed decline in dye removal performance due to the saturation of available adsorption sites. MOF/AC composite exhibited beneficial cost/performance ratio.
PB  - University of Belgrade : Institute for Multidisciplinary Research
C3  - 6CSCS : 6th Serbian Ceramic Society Conference : programme and the book of abstracts; June 28-29; Belgrade
T1  - Enhanced photocatalytic removal of Congo red by MOF-activated carbon composite
SP  - 58
EP  - 58
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12084
ER  - 

@conference{
author = "Egerić, Marija and Kumrić, Ksenija and Vujasin, Radojka and Devečerski, Aleksandar and Krstić, Sanja and Matović, Ljiljana and Petrović, Đorđe Ž.",
year = "2022",
abstract = "Rapid industrialization and increasing population have increased the water demand. Various wastes from industries and anthropogenic activities are discharged into aquatic bodies such as lakes, ponds, rivers, oceans. Therefore, focus is placed on the removal of the contamination from the wastewater. Organic pollutants gained extensive attention because of their toxicity, persistence and significant impacts on human health Among them, organic dyes are complex molecules and most of them are water-soluble, resistant to detergents and heat, exhibit poor biodegradability, etc. Azo dyes are used in about 70% of commercial dyes today, from textile and plastic to cosmetics and food. In this work, removal of azo-type dye Congo Red (CR) from water was performed by using UiO-66 type MOF (Metal Organic Framework), activated carbon (AC) and their composite powder mixture (MOF/AC = 50/50 wt.%). Samples were exposed to solar light irradiation for 1h and 2.5 h, respectively, centrifuged to remove solid particles, and solutions were analyzed by UV-ViS spectrophotometer in order to determine the concentration of the remaining dye. Process was repeated three times in order to explore the renewability of the photocatalysts used, with catalysts dried at 50 °C between cycles. Results revieled superior photocatalytic cycling performance of the MOF compared to the MOF/AC composite, while AC showed decline in dye removal performance due to the saturation of available adsorption sites. MOF/AC composite exhibited beneficial cost/performance ratio.",
publisher = "University of Belgrade : Institute for Multidisciplinary Research",
journal = "6CSCS : 6th Serbian Ceramic Society Conference : programme and the book of abstracts; June 28-29; Belgrade",
title = "Enhanced photocatalytic removal of Congo red by MOF-activated carbon composite",
pages = "58-58",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12084"
}

Egerić, M., Kumrić, K., Vujasin, R., Devečerski, A., Krstić, S., Matović, L.,& Petrović, Đ. Ž.. (2022). Enhanced photocatalytic removal of Congo red by MOF-activated carbon composite. in 6CSCS : 6th Serbian Ceramic Society Conference : programme and the book of abstracts; June 28-29; Belgrade
University of Belgrade : Institute for Multidisciplinary Research., 58-58.
https://hdl.handle.net/21.15107/rcub_vinar_12084

Egerić M, Kumrić K, Vujasin R, Devečerski A, Krstić S, Matović L, Petrović ĐŽ. Enhanced photocatalytic removal of Congo red by MOF-activated carbon composite. in 6CSCS : 6th Serbian Ceramic Society Conference : programme and the book of abstracts; June 28-29; Belgrade. 2022;:58-58.
https://hdl.handle.net/21.15107/rcub_vinar_12084 .

Egerić, Marija, Kumrić, Ksenija, Vujasin, Radojka, Devečerski, Aleksandar, Krstić, Sanja, Matović, Ljiljana, Petrović, Đorđe Ž., "Enhanced photocatalytic removal of Congo red by MOF-activated carbon composite" in 6CSCS : 6th Serbian Ceramic Society Conference : programme and the book of abstracts; June 28-29; Belgrade (2022):58-58,
https://hdl.handle.net/21.15107/rcub_vinar_12084 .

TY  - JOUR
AU  - Wu, Yi-nan
AU  - Fang, Yue
AU  - Fu, Jiarui
AU  - He, Lina
AU  - Kabtamu, Daniel Manaye
AU  - Matović, Ljiljana
AU  - Li, Fengting
AU  - Li, Jie
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10427
AB  - Arsenic contamination has adverse health effects on human, and metal-organic frameworks (MOFs) are suitable adsorbents for its removal. The small-scale synthesis and high cost hindered the application of MOFs in arsenic removal. The challenge resulted from the strict synthesis conditions, like harsh temperature or pressure and the use of toxic organic solvents such as N, N-Dimethylformamide, etc. We reported herein an optimized method for scalable synthesis of MIL-88B(Fe) in innocuous ethanol solvent under benign conditions (low temperature, normal pressure, and no pretreatment of reactants). Synthetic parameters, such as the ratio of reactants, temperature, reaction time, and purification process, were optimized to achieve scalable preparation of the product. The scale-up produced MIL-88B(Fe) presents extraordinary adsorption capacity (128.99 mg/g) towards toxic arsenate in water. Furthermore, we shaped the MOFs powder into millimeter-scale granules by using the bio-compatible binding agents and flash freezing treatment. The composite also outperforms in arsenate adsorption capacity than that of commercially available products. Additionally, a 250-hours dynamic column adsorption operation proves that the composite can guarantee a safe concentration level of arsenate effluent. The well-shaped porous structure of composite facilitates its application and avoids secondary pollution in real scenarios, demonstrating applicable prospects as filters for water purification.
T2  - Journal of Environmental Chemical Engineering
T1  - Optimized scalable synthesis and granulation of MIL-88B(Fe) for efficient arsenate removal
VL  - 10
IS  - 6
SP  - 108556
DO  - 10.1016/j.jece.2022.108556
ER  - 

@article{
author = "Wu, Yi-nan and Fang, Yue and Fu, Jiarui and He, Lina and Kabtamu, Daniel Manaye and Matović, Ljiljana and Li, Fengting and Li, Jie",
year = "2022",
abstract = "Arsenic contamination has adverse health effects on human, and metal-organic frameworks (MOFs) are suitable adsorbents for its removal. The small-scale synthesis and high cost hindered the application of MOFs in arsenic removal. The challenge resulted from the strict synthesis conditions, like harsh temperature or pressure and the use of toxic organic solvents such as N, N-Dimethylformamide, etc. We reported herein an optimized method for scalable synthesis of MIL-88B(Fe) in innocuous ethanol solvent under benign conditions (low temperature, normal pressure, and no pretreatment of reactants). Synthetic parameters, such as the ratio of reactants, temperature, reaction time, and purification process, were optimized to achieve scalable preparation of the product. The scale-up produced MIL-88B(Fe) presents extraordinary adsorption capacity (128.99 mg/g) towards toxic arsenate in water. Furthermore, we shaped the MOFs powder into millimeter-scale granules by using the bio-compatible binding agents and flash freezing treatment. The composite also outperforms in arsenate adsorption capacity than that of commercially available products. Additionally, a 250-hours dynamic column adsorption operation proves that the composite can guarantee a safe concentration level of arsenate effluent. The well-shaped porous structure of composite facilitates its application and avoids secondary pollution in real scenarios, demonstrating applicable prospects as filters for water purification.",
journal = "Journal of Environmental Chemical Engineering",
title = "Optimized scalable synthesis and granulation of MIL-88B(Fe) for efficient arsenate removal",
volume = "10",
number = "6",
pages = "108556",
doi = "10.1016/j.jece.2022.108556"
}

Wu, Y., Fang, Y., Fu, J., He, L., Kabtamu, D. M., Matović, L., Li, F.,& Li, J.. (2022). Optimized scalable synthesis and granulation of MIL-88B(Fe) for efficient arsenate removal. in Journal of Environmental Chemical Engineering, 10(6), 108556.
https://doi.org/10.1016/j.jece.2022.108556

Wu Y, Fang Y, Fu J, He L, Kabtamu DM, Matović L, Li F, Li J. Optimized scalable synthesis and granulation of MIL-88B(Fe) for efficient arsenate removal. in Journal of Environmental Chemical Engineering. 2022;10(6):108556.
doi:10.1016/j.jece.2022.108556 .

Wu, Yi-nan, Fang, Yue, Fu, Jiarui, He, Lina, Kabtamu, Daniel Manaye, Matović, Ljiljana, Li, Fengting, Li, Jie, "Optimized scalable synthesis and granulation of MIL-88B(Fe) for efficient arsenate removal" in Journal of Environmental Chemical Engineering, 10, no. 6 (2022):108556,
https://doi.org/10.1016/j.jece.2022.108556 . .

TY  - CONF
AU  - Stanković, Katarina
AU  - Petrović, Đ.
AU  - Telečki, Igor
AU  - Vujasin, Radojka
AU  - Matović, Ljiljana
AU  - Devečerski, Aleksandar
AU  - Kumrić, Ksenija
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12078
AB  - Chitosan and its modified forms have received great attention as potential adsorbents due to its outstanding adsorption characteristics toward removal of vaious toxic heavy metal ions from aqueous solutions. In this work, a porous chitosan hydrogel beads (CHB) and CHB cross-linked with glutaraldehyde (GLA) and citric acid (CA) were synthesized and used for investigation of its adsorption performances toward the removal of Pb(II), Cu(II), Zn(II), Cd(II) and Cr(VI) ions from water in batch and dynamic systems. Maximum removal was achieved in the pH ranges of 4.0 - 6.5 and 2.0 - 3.5 for divalent cations and Cr(VI) oxyanion, respectively. The equilibrium adsorption data were best fitted by the Langmuir isotherm model. Based on the optimal conditions, the fixed-bed breakthrough curves for the removal of the studied metal ions from the aqueous solutions using fixedbed columns were experimentally evaluated, as well as theoretically predicted using COMSOL Multiphysics software.
PB  - Society of Physical Chemists of Serbia
C3  - Physical chemistry 2021 : 15th international conference on fundamental and applied aspects of physical chemistry
T1  - Development of chitosan-based hydrogel beads for heavy metals removal from aqueous solutions
VL  - II
SP  - 588
EP  - 591
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12078
ER  - 

@conference{
author = "Stanković, Katarina and Petrović, Đ. and Telečki, Igor and Vujasin, Radojka and Matović, Ljiljana and Devečerski, Aleksandar and Kumrić, Ksenija",
year = "2021",
abstract = "Chitosan and its modified forms have received great attention as potential adsorbents due to its outstanding adsorption characteristics toward removal of vaious toxic heavy metal ions from aqueous solutions. In this work, a porous chitosan hydrogel beads (CHB) and CHB cross-linked with glutaraldehyde (GLA) and citric acid (CA) were synthesized and used for investigation of its adsorption performances toward the removal of Pb(II), Cu(II), Zn(II), Cd(II) and Cr(VI) ions from water in batch and dynamic systems. Maximum removal was achieved in the pH ranges of 4.0 - 6.5 and 2.0 - 3.5 for divalent cations and Cr(VI) oxyanion, respectively. The equilibrium adsorption data were best fitted by the Langmuir isotherm model. Based on the optimal conditions, the fixed-bed breakthrough curves for the removal of the studied metal ions from the aqueous solutions using fixedbed columns were experimentally evaluated, as well as theoretically predicted using COMSOL Multiphysics software.",
publisher = "Society of Physical Chemists of Serbia",
journal = "Physical chemistry 2021 : 15th international conference on fundamental and applied aspects of physical chemistry",
title = "Development of chitosan-based hydrogel beads for heavy metals removal from aqueous solutions",
volume = "II",
pages = "588-591",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12078"
}

Stanković, K., Petrović, Đ., Telečki, I., Vujasin, R., Matović, L., Devečerski, A.,& Kumrić, K.. (2021). Development of chitosan-based hydrogel beads for heavy metals removal from aqueous solutions. in Physical chemistry 2021 : 15th international conference on fundamental and applied aspects of physical chemistry
Society of Physical Chemists of Serbia., II, 588-591.
https://hdl.handle.net/21.15107/rcub_vinar_12078

Stanković K, Petrović Đ, Telečki I, Vujasin R, Matović L, Devečerski A, Kumrić K. Development of chitosan-based hydrogel beads for heavy metals removal from aqueous solutions. in Physical chemistry 2021 : 15th international conference on fundamental and applied aspects of physical chemistry. 2021;II:588-591.
https://hdl.handle.net/21.15107/rcub_vinar_12078 .

Stanković, Katarina, Petrović, Đ., Telečki, Igor, Vujasin, Radojka, Matović, Ljiljana, Devečerski, Aleksandar, Kumrić, Ksenija, "Development of chitosan-based hydrogel beads for heavy metals removal from aqueous solutions" in Physical chemistry 2021 : 15th international conference on fundamental and applied aspects of physical chemistry, II (2021):588-591,
https://hdl.handle.net/21.15107/rcub_vinar_12078 .

TY  - CONF
AU  - Kumrić, Ksenija
AU  - Vujasin, Radojka
AU  - Egerić, Marija
AU  - Petrović, Đ.
AU  - Stanković, Katarina
AU  - Devečerski, Aleksandar
AU  - Matović, Ljiljana
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12077
AB  - An analytical method based on solid-phase extraction (SPE) using coconut shell activated carbon (CSAC) as a low-cost adsorbent and high performance liquid chromatography with diode array detector (HPLC-DAD) was developed and validated for the determination of four varying polarity pesticides in water samples. SPE procedure was optimized and under the optimized conditions the proposed method was validated. The method exhibited good linearity, satisfactory precision (1.4 – 5.1%), high enrichment factor, good recovery and low limits of detection (0.025 – 0.039 g/dm3 ). Optimized method was used to determine selected pesticides in tap water samples. The recoveries ranged from 58.2% to 105.3%, with low relative standard deviations. The obtained results indicated that the proposed SPE-HPLC-DAD method could be efficiently used for the determination of the selected pesticides in environmental water samples at trace levels.
PB  - Society of Physical Chemists of Serbia
C3  - Physical chemistry 2021 : 15th international conference on fundamental and applied aspects of physical chemistry
T1  - Development and validation of a SPE-HPLC-DAD method for the determination of selected pesticides in water samples
VL  - II
SP  - 584
EP  - 587
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12077
ER  - 

@conference{
author = "Kumrić, Ksenija and Vujasin, Radojka and Egerić, Marija and Petrović, Đ. and Stanković, Katarina and Devečerski, Aleksandar and Matović, Ljiljana",
year = "2021",
abstract = "An analytical method based on solid-phase extraction (SPE) using coconut shell activated carbon (CSAC) as a low-cost adsorbent and high performance liquid chromatography with diode array detector (HPLC-DAD) was developed and validated for the determination of four varying polarity pesticides in water samples. SPE procedure was optimized and under the optimized conditions the proposed method was validated. The method exhibited good linearity, satisfactory precision (1.4 – 5.1%), high enrichment factor, good recovery and low limits of detection (0.025 – 0.039 g/dm3 ). Optimized method was used to determine selected pesticides in tap water samples. The recoveries ranged from 58.2% to 105.3%, with low relative standard deviations. The obtained results indicated that the proposed SPE-HPLC-DAD method could be efficiently used for the determination of the selected pesticides in environmental water samples at trace levels.",
publisher = "Society of Physical Chemists of Serbia",
journal = "Physical chemistry 2021 : 15th international conference on fundamental and applied aspects of physical chemistry",
title = "Development and validation of a SPE-HPLC-DAD method for the determination of selected pesticides in water samples",
volume = "II",
pages = "584-587",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12077"
}

Kumrić, K., Vujasin, R., Egerić, M., Petrović, Đ., Stanković, K., Devečerski, A.,& Matović, L.. (2021). Development and validation of a SPE-HPLC-DAD method for the determination of selected pesticides in water samples. in Physical chemistry 2021 : 15th international conference on fundamental and applied aspects of physical chemistry
Society of Physical Chemists of Serbia., II, 584-587.
https://hdl.handle.net/21.15107/rcub_vinar_12077

Kumrić K, Vujasin R, Egerić M, Petrović Đ, Stanković K, Devečerski A, Matović L. Development and validation of a SPE-HPLC-DAD method for the determination of selected pesticides in water samples. in Physical chemistry 2021 : 15th international conference on fundamental and applied aspects of physical chemistry. 2021;II:584-587.
https://hdl.handle.net/21.15107/rcub_vinar_12077 .

Kumrić, Ksenija, Vujasin, Radojka, Egerić, Marija, Petrović, Đ., Stanković, Katarina, Devečerski, Aleksandar, Matović, Ljiljana, "Development and validation of a SPE-HPLC-DAD method for the determination of selected pesticides in water samples" in Physical chemistry 2021 : 15th international conference on fundamental and applied aspects of physical chemistry, II (2021):584-587,
https://hdl.handle.net/21.15107/rcub_vinar_12077 .

TY  - JOUR
AU  - Matović, Ljiljana
AU  - Vujasin, Radojka
AU  - Kumrić, Ksenija
AU  - Krstić, Sanja S.
AU  - Wu, Yi-nan
AU  - Kabtamu, Daniel Manaye
AU  - Devečerski, Aleksandar
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9545
AB  - Development of method for the complete conversion of Cr-containing electroplating sludge (ES) into the black inorganic pigment was presented. Difficulties related to the ES complex, variable composition and inhomogeneity, where the dominant presence of Cr was followed by: Fe, P, Zn, Ni, Cu, etc., can be overcome by determination of the precise amount of Fe2O3 necessary to be added in order to firmly embed all the heavy metals into the pigment structure (i.e. the Fe0.7Cr1.3O3/FePO4 nanocomposite), taking care not only about weight/molar ratios, but also about average particle size, apparent densities, and volume fraction of the starting materials. As a source of Fe2O3, commercial (p.a.) Fe2O3 and two different Fe-wastes were used, thus completely fulfilling the principles of the circular economy. The obtained black inorganic pigments have consistent composition, no leaching of toxic metals, color (CIE L-a-b-values) comparable with those of commercial pigments and thus have the potential commercial large scale application. © 2021 Elsevier Ltd.
T2  - Journal of Environmental Chemical Engineering
T1  - Designing of technological scheme for conversion of Cr-rich electroplating sludge into the black ceramic pigments of consistent composition, following the principles of circular economy
VL  - 9
IS  - 1
SP  - 105038
DO  - 10.1016/j.jece.2021.105038
ER  - 

@article{
author = "Matović, Ljiljana and Vujasin, Radojka and Kumrić, Ksenija and Krstić, Sanja S. and Wu, Yi-nan and Kabtamu, Daniel Manaye and Devečerski, Aleksandar",
year = "2021",
abstract = "Development of method for the complete conversion of Cr-containing electroplating sludge (ES) into the black inorganic pigment was presented. Difficulties related to the ES complex, variable composition and inhomogeneity, where the dominant presence of Cr was followed by: Fe, P, Zn, Ni, Cu, etc., can be overcome by determination of the precise amount of Fe2O3 necessary to be added in order to firmly embed all the heavy metals into the pigment structure (i.e. the Fe0.7Cr1.3O3/FePO4 nanocomposite), taking care not only about weight/molar ratios, but also about average particle size, apparent densities, and volume fraction of the starting materials. As a source of Fe2O3, commercial (p.a.) Fe2O3 and two different Fe-wastes were used, thus completely fulfilling the principles of the circular economy. The obtained black inorganic pigments have consistent composition, no leaching of toxic metals, color (CIE L-a-b-values) comparable with those of commercial pigments and thus have the potential commercial large scale application. © 2021 Elsevier Ltd.",
journal = "Journal of Environmental Chemical Engineering",
title = "Designing of technological scheme for conversion of Cr-rich electroplating sludge into the black ceramic pigments of consistent composition, following the principles of circular economy",
volume = "9",
number = "1",
pages = "105038",
doi = "10.1016/j.jece.2021.105038"
}

Matović, L., Vujasin, R., Kumrić, K., Krstić, S. S., Wu, Y., Kabtamu, D. M.,& Devečerski, A.. (2021). Designing of technological scheme for conversion of Cr-rich electroplating sludge into the black ceramic pigments of consistent composition, following the principles of circular economy. in Journal of Environmental Chemical Engineering, 9(1), 105038.
https://doi.org/10.1016/j.jece.2021.105038

Matović L, Vujasin R, Kumrić K, Krstić SS, Wu Y, Kabtamu DM, Devečerski A. Designing of technological scheme for conversion of Cr-rich electroplating sludge into the black ceramic pigments of consistent composition, following the principles of circular economy. in Journal of Environmental Chemical Engineering. 2021;9(1):105038.
doi:10.1016/j.jece.2021.105038 .

Matović, Ljiljana, Vujasin, Radojka, Kumrić, Ksenija, Krstić, Sanja S., Wu, Yi-nan, Kabtamu, Daniel Manaye, Devečerski, Aleksandar, "Designing of technological scheme for conversion of Cr-rich electroplating sludge into the black ceramic pigments of consistent composition, following the principles of circular economy" in Journal of Environmental Chemical Engineering, 9, no. 1 (2021):105038,
https://doi.org/10.1016/j.jece.2021.105038 . .

TY  - JOUR
AU  - Matović, Ljiljana
AU  - Vujasin, Radojka
AU  - Kumrić, Ksenija
AU  - Devečerski, Aleksandar
AU  - Wu, Yi-nan 
AU  - Kabtamu, Daniel M.
AU  - Mirković, Marija D.
AU  - Omerašević, Mia
AU  - Petrović, Đorđe
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9791
AB  - Enhanced degradation of organic dye was achieved using two different kinds of waste materials: waste tire granules and spent sealed radioactive sources. Waste tire granules were used as raw material for the production of waste tire char (WTC), which was further utilized as an adsorbent matrix for synergetic adsorption/irradiation degradation of organic dye. The spent radioactive sources were radiographic sealed sources that originate from the industry which generate the high energy radiation. Methylene Blue (MB) was used as an organic model compound. Synthesized WTC has turbostratic structure, irregular shaped particles and developed mesoporous surface. Complete degradation of 0.02 dm3 of 100 mg dm−3 MB solution, having WTC dose of 1.25 g dm−3, was achieved with delivered doze of only 60 Gy. The applied doses were 100 times smaller than those presented in the literature. Degradation pathway was determined: OH radicals that originate from radiolysis of water and from the surface of WTC played the crucial role in the radiocatalytic degradation of MB. Breakage of the aromatic ring of MB appeared by the scission of the double C‒S+˭C bond as a result of the attack of OH species on adsorbed and electronically reorganized MB molecule. © 2020 Elsevier B.V.
T2  - Journal of Hazardous Materials
T1  - Waste tire carbon in synergetic interaction with spent gamma radioactive source for efficient radiocatalytic degradation of organic dye
VL  - 408
DO  - 10.1016/j.jhazmat.2020.124922
ER  - 

@article{
author = "Matović, Ljiljana and Vujasin, Radojka and Kumrić, Ksenija and Devečerski, Aleksandar and Wu, Yi-nan  and Kabtamu, Daniel M. and Mirković, Marija D. and Omerašević, Mia and Petrović, Đorđe",
year = "2021",
abstract = "Enhanced degradation of organic dye was achieved using two different kinds of waste materials: waste tire granules and spent sealed radioactive sources. Waste tire granules were used as raw material for the production of waste tire char (WTC), which was further utilized as an adsorbent matrix for synergetic adsorption/irradiation degradation of organic dye. The spent radioactive sources were radiographic sealed sources that originate from the industry which generate the high energy radiation. Methylene Blue (MB) was used as an organic model compound. Synthesized WTC has turbostratic structure, irregular shaped particles and developed mesoporous surface. Complete degradation of 0.02 dm3 of 100 mg dm−3 MB solution, having WTC dose of 1.25 g dm−3, was achieved with delivered doze of only 60 Gy. The applied doses were 100 times smaller than those presented in the literature. Degradation pathway was determined: OH radicals that originate from radiolysis of water and from the surface of WTC played the crucial role in the radiocatalytic degradation of MB. Breakage of the aromatic ring of MB appeared by the scission of the double C‒S+˭C bond as a result of the attack of OH species on adsorbed and electronically reorganized MB molecule. © 2020 Elsevier B.V.",
journal = "Journal of Hazardous Materials",
title = "Waste tire carbon in synergetic interaction with spent gamma radioactive source for efficient radiocatalytic degradation of organic dye",
volume = "408",
doi = "10.1016/j.jhazmat.2020.124922"
}

Matović, L., Vujasin, R., Kumrić, K., Devečerski, A., Wu, Y., Kabtamu, D. M., Mirković, M. D., Omerašević, M.,& Petrović, Đ.. (2021). Waste tire carbon in synergetic interaction with spent gamma radioactive source for efficient radiocatalytic degradation of organic dye. in Journal of Hazardous Materials, 408.
https://doi.org/10.1016/j.jhazmat.2020.124922

Matović L, Vujasin R, Kumrić K, Devečerski A, Wu Y, Kabtamu DM, Mirković MD, Omerašević M, Petrović Đ. Waste tire carbon in synergetic interaction with spent gamma radioactive source for efficient radiocatalytic degradation of organic dye. in Journal of Hazardous Materials. 2021;408.
doi:10.1016/j.jhazmat.2020.124922 .

Matović, Ljiljana, Vujasin, Radojka, Kumrić, Ksenija, Devečerski, Aleksandar, Wu, Yi-nan , Kabtamu, Daniel M., Mirković, Marija D., Omerašević, Mia, Petrović, Đorđe, "Waste tire carbon in synergetic interaction with spent gamma radioactive source for efficient radiocatalytic degradation of organic dye" in Journal of Hazardous Materials, 408 (2021),
https://doi.org/10.1016/j.jhazmat.2020.124922 . .

TY  - CONF
AU  - Petrović, Đorđe Ž.
AU  - Kumrić, Ksenija
AU  - Mirković, Marija D.
AU  - Ilić-Stojanović, Snežana
AU  - Matović, Ljiljana
AU  - Eraković, Zorica
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12080
AB  - The use of high energy, ionizing radiation in nuclear medicine is now pervasive and routine. The interaction of gamma radiation with aqueous solutions produces different kinds of reducing and oxidizing agents. Reducing agents represent eaq, H• and H2 while oxidizing agents represent H2O2, •OH, O2, O2 - and HO2 [1]. Production of such species under gamma irradiation, there may affect the rates or mechanisms of corrosion attack modes. In recent times, electrochemical frequency modulation (EFM) has caught the attention of corrosion scientists as a rapid and non–destructive technique for the instantaneous determination of corrosion rate. The advantage of the EFM technique is the fact that the measurement can be completed in a short time period [2]. The EFM technique offers an excellent alternative for the analysis of electrochemical corrosion behavior of metals compared with contemporary techniques like potentiodynamic polarization, linear polarization, electrochemical impedance spectroscopy and weight loss. This technique provides measurements of corrosion rate directly without knowledge of the Tafel constants. Even though the Tafel constants are not required, it measures them and a change in Tafel constant may indicate a change in corrosion mechanism. The theory behind the technique is the same Butler-Volmer kinetics that underpins all corrosion rate measurements. It is a small signal ac technique where two sine waves (at different frequencies) are applied to the cell simultaneously. In our work, we used the EFM technique to calculate the corrosion rate on stainless steel samples in saline and under gamma radiation.
AB  - Nerđajući čelici su omiljeni materijali u nuklearnoj medicini zbog jednostavnog održavanja (brisanje, dekontaminacija, itd.). Otpornost na rđanje ovih materijala je smanjena usled istovremenog delovanja hloridnih jona i jonizujućeg zračenja. Brza i nedestruktivna tehnika merenja korozije, kao što je elektrohemijska frekvenciona modulacija (EFM), korisna je za brzu procenu materijala koji moraju biti otporni na rđаnje. Tri različite cevi od nerđajućeg čelika su analizirane pomoću EFM metode i Gamry potenciostata / galvanostata, i izračunate su njihove brzine korozije. Uzorak označen kao S II, koji ne sadrži Mo u svom sastavu pokazuje veću brzinu korozije u odnosu na uzorke koji sadrže Mo ako je istovremeno izložen hloridnim jonima i gama zračenju. Ovaj rezultat je u sagalsnosti sa sastavom nerdjajučćeg čelika dobijenim rentgenskim fluorescentnim spektrometrom koji pokazuje nedostatak bakra i vanadijuma u tragovima, uključujući molibden.
PB  - Belgrade : Serbian Chemical Society
C3  - 57th Meeting of the Serbian Chemical Society : Book of Abstracts, Proceedings
T1  - Corrosion Rate of Stainless Steel Tubes Calculated by Electrochemical Frequency Modulation
T1  - Brzina korozije cevi od nerđajućih čelika izračunata pomoću elektrohemijske frekvencione modulacije
SP  - 108
EP  - 113
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12080
ER  - 

@conference{
author = "Petrović, Đorđe Ž. and Kumrić, Ksenija and Mirković, Marija D. and Ilić-Stojanović, Snežana and Matović, Ljiljana and Eraković, Zorica",
year = "2021",
abstract = "The use of high energy, ionizing radiation in nuclear medicine is now pervasive and routine. The interaction of gamma radiation with aqueous solutions produces different kinds of reducing and oxidizing agents. Reducing agents represent eaq, H• and H2 while oxidizing agents represent H2O2, •OH, O2, O2 - and HO2 [1]. Production of such species under gamma irradiation, there may affect the rates or mechanisms of corrosion attack modes. In recent times, electrochemical frequency modulation (EFM) has caught the attention of corrosion scientists as a rapid and non–destructive technique for the instantaneous determination of corrosion rate. The advantage of the EFM technique is the fact that the measurement can be completed in a short time period [2]. The EFM technique offers an excellent alternative for the analysis of electrochemical corrosion behavior of metals compared with contemporary techniques like potentiodynamic polarization, linear polarization, electrochemical impedance spectroscopy and weight loss. This technique provides measurements of corrosion rate directly without knowledge of the Tafel constants. Even though the Tafel constants are not required, it measures them and a change in Tafel constant may indicate a change in corrosion mechanism. The theory behind the technique is the same Butler-Volmer kinetics that underpins all corrosion rate measurements. It is a small signal ac technique where two sine waves (at different frequencies) are applied to the cell simultaneously. In our work, we used the EFM technique to calculate the corrosion rate on stainless steel samples in saline and under gamma radiation., Nerđajući čelici su omiljeni materijali u nuklearnoj medicini zbog jednostavnog održavanja (brisanje, dekontaminacija, itd.). Otpornost na rđanje ovih materijala je smanjena usled istovremenog delovanja hloridnih jona i jonizujućeg zračenja. Brza i nedestruktivna tehnika merenja korozije, kao što je elektrohemijska frekvenciona modulacija (EFM), korisna je za brzu procenu materijala koji moraju biti otporni na rđаnje. Tri različite cevi od nerđajućeg čelika su analizirane pomoću EFM metode i Gamry potenciostata / galvanostata, i izračunate su njihove brzine korozije. Uzorak označen kao S II, koji ne sadrži Mo u svom sastavu pokazuje veću brzinu korozije u odnosu na uzorke koji sadrže Mo ako je istovremeno izložen hloridnim jonima i gama zračenju. Ovaj rezultat je u sagalsnosti sa sastavom nerdjajučćeg čelika dobijenim rentgenskim fluorescentnim spektrometrom koji pokazuje nedostatak bakra i vanadijuma u tragovima, uključujući molibden.",
publisher = "Belgrade : Serbian Chemical Society",
journal = "57th Meeting of the Serbian Chemical Society : Book of Abstracts, Proceedings",
title = "Corrosion Rate of Stainless Steel Tubes Calculated by Electrochemical Frequency Modulation, Brzina korozije cevi od nerđajućih čelika izračunata pomoću elektrohemijske frekvencione modulacije",
pages = "108-113",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12080"
}

Petrović, Đ. Ž., Kumrić, K., Mirković, M. D., Ilić-Stojanović, S., Matović, L.,& Eraković, Z.. (2021). Corrosion Rate of Stainless Steel Tubes Calculated by Electrochemical Frequency Modulation. in 57th Meeting of the Serbian Chemical Society : Book of Abstracts, Proceedings
Belgrade : Serbian Chemical Society., 108-113.
https://hdl.handle.net/21.15107/rcub_vinar_12080

Petrović ĐŽ, Kumrić K, Mirković MD, Ilić-Stojanović S, Matović L, Eraković Z. Corrosion Rate of Stainless Steel Tubes Calculated by Electrochemical Frequency Modulation. in 57th Meeting of the Serbian Chemical Society : Book of Abstracts, Proceedings. 2021;:108-113.
https://hdl.handle.net/21.15107/rcub_vinar_12080 .

Petrović, Đorđe Ž., Kumrić, Ksenija, Mirković, Marija D., Ilić-Stojanović, Snežana, Matović, Ljiljana, Eraković, Zorica, "Corrosion Rate of Stainless Steel Tubes Calculated by Electrochemical Frequency Modulation" in 57th Meeting of the Serbian Chemical Society : Book of Abstracts, Proceedings (2021):108-113,
https://hdl.handle.net/21.15107/rcub_vinar_12080 .

TY  - CONF
AU  - Stanković, Katarina
AU  - Vujasin, Radojka
AU  - Egerić, Marija
AU  - Matović, Ljiljana
AU  - Petrović, Đorđe Ž.
AU  - Kumrić, Ksenija
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12081
AB  - Most heavy metals, such as Cr (chromium), Pb (lead), Cd (cadmium), Ni (nickel), Cu (copper) and Fe (iron), are extremely toxic above a tolerance limit. These heavy metals in wastewater are not biodegradable and can cause serious harm to human health and ecological environments.1 One of the top-priority toxic heavy metal in wastewater is chromium.2 In natural waters, chromium exists in both trivalent Cr(III) and hexavalent Cr(VI) forms. Cr(VI) is the most toxic one and have the tolerance limit 0.1 mg/L into surface water and 0.05 mg/L in potable water.3 Various methods, such as ion exchange, sedimentation, electrochemical process, cementation, coagulation, adsorption and solvent extraction have been developed for the removal of Cr(VI) and other toxic metals from wastewater.4 Among these methods, in some papers,5-8 adsorption has been used as one of the most effective method for the removal of Cr(VI) from aqueous solutions. Characteristics of adsorption, such as low cost, easy to perform, efficient and reversible method with high operating speed, make this method as most commonly used for the removal of Cr(VI) from aqueous solutions.9 Several adsorbents, like activated alumina,10 zeolites,11 natural bisorbents such as chitosan,12 but also activated carbon13 have been used for the removal of Cr(VI) from aqueous solutions. Due to the high cost, commercial activated carbon is not available in less developed countries and there is a considerable attention to produce activated carbon from less expensive and available materials. As a low-cost adsorbent, activated carbon can be produced from materials such as rice husk, seeds husk, tea leaves, sawdust, oil palm shell, coconut husk and coconut shell.14 Activated carbon is one of the most important adsorbents which is applied in different areas. In these areas it is important to determine and remove low concentrations of some pollutants, such as heavy metals. Very good features of this adsorbent are the main reason why it is used, such as large surface area, porous structure, high adsorption capacity, selective adsorption and low cost. Also, it is important to note that activated carbon has microcrystalline structure with different size and shape of pores, while surface groups plays important role in the adsorption process. Carbon - oxygen surface groups are the most important and they influence the surface characteristics, such as polarity and physicochemical properties of adsorbent. There are two processes for preparation of activated carbon, chemical activation which involves presence of chemical agents, and physical activation, which involves carbonization.15-16 For this research, low-cost powdered activated carbon made from coconut shell was used as adsorbent to remove Cr(VI) from aqueous solutions. Characterization of activated carbon, produced from coconut shell, was accomplished using scanning electron microscopy (SEM) and Brunauer-Emmett-Teller (BET) method. The effects of three 57. savetovanje SHD 137 adsorption parameters, such as solution pH, contact time and initial Cr(VI) concentration, were investigated with respect to the removal efficiency of Cr(VI) from aqueous solutions. Adsorption equilibrium characteristics were analyzed by using the two adsorption models, namely the Langmuir and the Freundlich isotherms.
AB  - Praškast ugljenični materijal proizveden iz kokosove ljuske korišćen je kao adsorbent za uklanjanje Cr(VI) jona iz vodenih rastvora. Karakterizacija adsorbenta rađena je primenom dve analitičke tehnike, skenirajućom elektronskom mikroskopijom (SEM) i BET metodom. Eksperimenti adsorpcije rađeni su u šaržnom režimu, kako bi se istražili uticaji pH rastvora, vremena kontakta i početne koncentracije Cr(VI) jona. Eksperimentalni rezultati su pokazali da je efikasnost uklanjanja Cr(VI) najveća u pH intervalu od 2,0 do 3,5, a da se ravnoteža uspostavlja nakon 60 minuta. Dva ravnotežna adsorpciona modela, Langmirov i Frojndlihov, korišćena su za fitovanje dobijenih podataka. Frojndlihova izoterma je obezbedila najbolju korelaciju za adsorpciju Cr(VI) jona na ugljeničnom materijalu proizvedenom iz kokosove ljuske. Na osnovu dobijenih rezultata može se zaključiti da ugljenični materijal proizveden iz kokosove ljuske predstavlja jeftin i efikasan adsorbent koji bi potencijalno mogao biti korišćen za tretman otpadnih voda koje sadrže toksični Cr(VI).
PB  - Belgrade : Serbian Chemical Society
C3  - 57th Meeting of the Serbian Chemical Society : Book of Abstracts, Proceedings
T1  - Chromium(VI) removal from aqueous solutions using powdered coconut shell activated carbon as a low-cost adsorbent
T1  - Uklanjanje hroma(VI) iz vode primenom praškastog ugljeničnog materijala dobijenog iz kokosove ljuske kao jeftinog adsorbenta
SP  - 136
EP  - 142
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12081
ER  - 

@conference{
author = "Stanković, Katarina and Vujasin, Radojka and Egerić, Marija and Matović, Ljiljana and Petrović, Đorđe Ž. and Kumrić, Ksenija",
year = "2021",
abstract = "Most heavy metals, such as Cr (chromium), Pb (lead), Cd (cadmium), Ni (nickel), Cu (copper) and Fe (iron), are extremely toxic above a tolerance limit. These heavy metals in wastewater are not biodegradable and can cause serious harm to human health and ecological environments.1 One of the top-priority toxic heavy metal in wastewater is chromium.2 In natural waters, chromium exists in both trivalent Cr(III) and hexavalent Cr(VI) forms. Cr(VI) is the most toxic one and have the tolerance limit 0.1 mg/L into surface water and 0.05 mg/L in potable water.3 Various methods, such as ion exchange, sedimentation, electrochemical process, cementation, coagulation, adsorption and solvent extraction have been developed for the removal of Cr(VI) and other toxic metals from wastewater.4 Among these methods, in some papers,5-8 adsorption has been used as one of the most effective method for the removal of Cr(VI) from aqueous solutions. Characteristics of adsorption, such as low cost, easy to perform, efficient and reversible method with high operating speed, make this method as most commonly used for the removal of Cr(VI) from aqueous solutions.9 Several adsorbents, like activated alumina,10 zeolites,11 natural bisorbents such as chitosan,12 but also activated carbon13 have been used for the removal of Cr(VI) from aqueous solutions. Due to the high cost, commercial activated carbon is not available in less developed countries and there is a considerable attention to produce activated carbon from less expensive and available materials. As a low-cost adsorbent, activated carbon can be produced from materials such as rice husk, seeds husk, tea leaves, sawdust, oil palm shell, coconut husk and coconut shell.14 Activated carbon is one of the most important adsorbents which is applied in different areas. In these areas it is important to determine and remove low concentrations of some pollutants, such as heavy metals. Very good features of this adsorbent are the main reason why it is used, such as large surface area, porous structure, high adsorption capacity, selective adsorption and low cost. Also, it is important to note that activated carbon has microcrystalline structure with different size and shape of pores, while surface groups plays important role in the adsorption process. Carbon - oxygen surface groups are the most important and they influence the surface characteristics, such as polarity and physicochemical properties of adsorbent. There are two processes for preparation of activated carbon, chemical activation which involves presence of chemical agents, and physical activation, which involves carbonization.15-16 For this research, low-cost powdered activated carbon made from coconut shell was used as adsorbent to remove Cr(VI) from aqueous solutions. Characterization of activated carbon, produced from coconut shell, was accomplished using scanning electron microscopy (SEM) and Brunauer-Emmett-Teller (BET) method. The effects of three 57. savetovanje SHD 137 adsorption parameters, such as solution pH, contact time and initial Cr(VI) concentration, were investigated with respect to the removal efficiency of Cr(VI) from aqueous solutions. Adsorption equilibrium characteristics were analyzed by using the two adsorption models, namely the Langmuir and the Freundlich isotherms., Praškast ugljenični materijal proizveden iz kokosove ljuske korišćen je kao adsorbent za uklanjanje Cr(VI) jona iz vodenih rastvora. Karakterizacija adsorbenta rađena je primenom dve analitičke tehnike, skenirajućom elektronskom mikroskopijom (SEM) i BET metodom. Eksperimenti adsorpcije rađeni su u šaržnom režimu, kako bi se istražili uticaji pH rastvora, vremena kontakta i početne koncentracije Cr(VI) jona. Eksperimentalni rezultati su pokazali da je efikasnost uklanjanja Cr(VI) najveća u pH intervalu od 2,0 do 3,5, a da se ravnoteža uspostavlja nakon 60 minuta. Dva ravnotežna adsorpciona modela, Langmirov i Frojndlihov, korišćena su za fitovanje dobijenih podataka. Frojndlihova izoterma je obezbedila najbolju korelaciju za adsorpciju Cr(VI) jona na ugljeničnom materijalu proizvedenom iz kokosove ljuske. Na osnovu dobijenih rezultata može se zaključiti da ugljenični materijal proizveden iz kokosove ljuske predstavlja jeftin i efikasan adsorbent koji bi potencijalno mogao biti korišćen za tretman otpadnih voda koje sadrže toksični Cr(VI).",
publisher = "Belgrade : Serbian Chemical Society",
journal = "57th Meeting of the Serbian Chemical Society : Book of Abstracts, Proceedings",
title = "Chromium(VI) removal from aqueous solutions using powdered coconut shell activated carbon as a low-cost adsorbent, Uklanjanje hroma(VI) iz vode primenom praškastog ugljeničnog materijala dobijenog iz kokosove ljuske kao jeftinog adsorbenta",
pages = "136-142",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12081"
}

Stanković, K., Vujasin, R., Egerić, M., Matović, L., Petrović, Đ. Ž.,& Kumrić, K.. (2021). Chromium(VI) removal from aqueous solutions using powdered coconut shell activated carbon as a low-cost adsorbent. in 57th Meeting of the Serbian Chemical Society : Book of Abstracts, Proceedings
Belgrade : Serbian Chemical Society., 136-142.
https://hdl.handle.net/21.15107/rcub_vinar_12081

Stanković K, Vujasin R, Egerić M, Matović L, Petrović ĐŽ, Kumrić K. Chromium(VI) removal from aqueous solutions using powdered coconut shell activated carbon as a low-cost adsorbent. in 57th Meeting of the Serbian Chemical Society : Book of Abstracts, Proceedings. 2021;:136-142.
https://hdl.handle.net/21.15107/rcub_vinar_12081 .

Stanković, Katarina, Vujasin, Radojka, Egerić, Marija, Matović, Ljiljana, Petrović, Đorđe Ž., Kumrić, Ksenija, "Chromium(VI) removal from aqueous solutions using powdered coconut shell activated carbon as a low-cost adsorbent" in 57th Meeting of the Serbian Chemical Society : Book of Abstracts, Proceedings (2021):136-142,
https://hdl.handle.net/21.15107/rcub_vinar_12081 .

TY  - CONF
AU  - Vujasin, Radojka
AU  - Stanković, Srboljub
AU  - Kumrić, Ksenija
AU  - Devečerski, Aleksandar
AU  - Wu, Yi-nan
AU  - Petrović, Đorđe Ž.
AU  - Matović, Ljiljana
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12086
PB  - Leskovac : Faculty of Technology
C3  - 14th Symposium with International Participation "Novel Technologies and Economic Development" : Book of abstracts
T1  - Stabilization of heavy metals in electroplating sludge using chelating agent
SP  - 111
EP  - 111
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12086
ER  - 

@conference{
author = "Vujasin, Radojka and Stanković, Srboljub and Kumrić, Ksenija and Devečerski, Aleksandar and Wu, Yi-nan and Petrović, Đorđe Ž. and Matović, Ljiljana",
year = "2021",
publisher = "Leskovac : Faculty of Technology",
journal = "14th Symposium with International Participation "Novel Technologies and Economic Development" : Book of abstracts",
title = "Stabilization of heavy metals in electroplating sludge using chelating agent",
pages = "111-111",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12086"
}

Vujasin, R., Stanković, S., Kumrić, K., Devečerski, A., Wu, Y., Petrović, Đ. Ž.,& Matović, L.. (2021). Stabilization of heavy metals in electroplating sludge using chelating agent. in 14th Symposium with International Participation "Novel Technologies and Economic Development" : Book of abstracts
Leskovac : Faculty of Technology., 111-111.
https://hdl.handle.net/21.15107/rcub_vinar_12086

Vujasin R, Stanković S, Kumrić K, Devečerski A, Wu Y, Petrović ĐŽ, Matović L. Stabilization of heavy metals in electroplating sludge using chelating agent. in 14th Symposium with International Participation "Novel Technologies and Economic Development" : Book of abstracts. 2021;:111-111.
https://hdl.handle.net/21.15107/rcub_vinar_12086 .

Vujasin, Radojka, Stanković, Srboljub, Kumrić, Ksenija, Devečerski, Aleksandar, Wu, Yi-nan, Petrović, Đorđe Ž., Matović, Ljiljana, "Stabilization of heavy metals in electroplating sludge using chelating agent" in 14th Symposium with International Participation "Novel Technologies and Economic Development" : Book of abstracts (2021):111-111,
https://hdl.handle.net/21.15107/rcub_vinar_12086 .

TY  - CONF
AU  - Stanković, Katarina
AU  - Kumrić, Ksenija
AU  - Wu, Yi-nan
AU  - Petrović, Đorđe Ž.
AU  - Egerić, Marija
AU  - Vujasin, Radojka
AU  - Matović, Ljiljana
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12087
PB  - Leskovac : Faculty of Technology
C3  - 14th Symposium with International Participation "Novel Technologies and Economic Development" : Book of abstracts
T1  - Zirconium-based metal-organic framework UiO-66 as adsorbent for efficient removal of Cr(VI) from aqueous solutions
SP  - 112
EP  - 112
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12087
ER  - 

@conference{
author = "Stanković, Katarina and Kumrić, Ksenija and Wu, Yi-nan and Petrović, Đorđe Ž. and Egerić, Marija and Vujasin, Radojka and Matović, Ljiljana",
year = "2021",
publisher = "Leskovac : Faculty of Technology",
journal = "14th Symposium with International Participation "Novel Technologies and Economic Development" : Book of abstracts",
title = "Zirconium-based metal-organic framework UiO-66 as adsorbent for efficient removal of Cr(VI) from aqueous solutions",
pages = "112-112",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12087"
}

Stanković, K., Kumrić, K., Wu, Y., Petrović, Đ. Ž., Egerić, M., Vujasin, R.,& Matović, L.. (2021). Zirconium-based metal-organic framework UiO-66 as adsorbent for efficient removal of Cr(VI) from aqueous solutions. in 14th Symposium with International Participation "Novel Technologies and Economic Development" : Book of abstracts
Leskovac : Faculty of Technology., 112-112.
https://hdl.handle.net/21.15107/rcub_vinar_12087

Stanković K, Kumrić K, Wu Y, Petrović ĐŽ, Egerić M, Vujasin R, Matović L. Zirconium-based metal-organic framework UiO-66 as adsorbent for efficient removal of Cr(VI) from aqueous solutions. in 14th Symposium with International Participation "Novel Technologies and Economic Development" : Book of abstracts. 2021;:112-112.
https://hdl.handle.net/21.15107/rcub_vinar_12087 .

Stanković, Katarina, Kumrić, Ksenija, Wu, Yi-nan, Petrović, Đorđe Ž., Egerić, Marija, Vujasin, Radojka, Matović, Ljiljana, "Zirconium-based metal-organic framework UiO-66 as adsorbent for efficient removal of Cr(VI) from aqueous solutions" in 14th Symposium with International Participation "Novel Technologies and Economic Development" : Book of abstracts (2021):112-112,
https://hdl.handle.net/21.15107/rcub_vinar_12087 .

TY  - CONF
AU  - Stanković, Katarina
AU  - Petrović, Đorđe Ž.
AU  - Telečki, Igor
AU  - Vujasin, Radojka
AU  - Matović, Ljiljana
AU  - Devečerski, Aleksandar
AU  - Kumrić, Ksenija
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12090
PB  - Leskovac : Faculty of Technology
C3  - 14th Symposium with International Participation "Novel Technologies and Economic Development" : Book of abstracts
T1  - Adsorptive removal of heavy metals by citric acid functionalized chitosan hydrogel beads: batch and continuous fixed-bed column study
SP  - 113
EP  - 113
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12090
ER  - 

@conference{
author = "Stanković, Katarina and Petrović, Đorđe Ž. and Telečki, Igor and Vujasin, Radojka and Matović, Ljiljana and Devečerski, Aleksandar and Kumrić, Ksenija",
year = "2021",
publisher = "Leskovac : Faculty of Technology",
journal = "14th Symposium with International Participation "Novel Technologies and Economic Development" : Book of abstracts",
title = "Adsorptive removal of heavy metals by citric acid functionalized chitosan hydrogel beads: batch and continuous fixed-bed column study",
pages = "113-113",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12090"
}

Stanković, K., Petrović, Đ. Ž., Telečki, I., Vujasin, R., Matović, L., Devečerski, A.,& Kumrić, K.. (2021). Adsorptive removal of heavy metals by citric acid functionalized chitosan hydrogel beads: batch and continuous fixed-bed column study. in 14th Symposium with International Participation "Novel Technologies and Economic Development" : Book of abstracts
Leskovac : Faculty of Technology., 113-113.
https://hdl.handle.net/21.15107/rcub_vinar_12090

Stanković K, Petrović ĐŽ, Telečki I, Vujasin R, Matović L, Devečerski A, Kumrić K. Adsorptive removal of heavy metals by citric acid functionalized chitosan hydrogel beads: batch and continuous fixed-bed column study. in 14th Symposium with International Participation "Novel Technologies and Economic Development" : Book of abstracts. 2021;:113-113.
https://hdl.handle.net/21.15107/rcub_vinar_12090 .

Stanković, Katarina, Petrović, Đorđe Ž., Telečki, Igor, Vujasin, Radojka, Matović, Ljiljana, Devečerski, Aleksandar, Kumrić, Ksenija, "Adsorptive removal of heavy metals by citric acid functionalized chitosan hydrogel beads: batch and continuous fixed-bed column study" in 14th Symposium with International Participation "Novel Technologies and Economic Development" : Book of abstracts (2021):113-113,
https://hdl.handle.net/21.15107/rcub_vinar_12090 .

TY  - JOUR
AU  - Lou, Xiaofei
AU  - Wu, Yi-nan
AU  - Kabtamu, Daniel Manaye
AU  - Matović, Ljiljana
AU  - Zhang, Yanxing
AU  - Sun, Xianyi
AU  - Schott, Eduardo
AU  - Chu, Wenhai
AU  - Li, Fengting
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8919
AB  - Metal-organic frameworks (MOFs), an exciting class of porous crystalline materials, are suitable for adsorptive removal of toxic heavy metal-ethylenediaminetetraacetic acid (M-EDTA) complexes from wastewater. In this paper, water-stable UiO-66(Zr) with well-defined morphology was successfully synthesized through a facile microwave-assisted solvothermal method and employed as nanotraps for the efficient capture of the three M-EDTA complexes, Cu-EDTA, Pb-EDTA, and Ni-EDTA. The adsorption behaviors, effects of solution pH and co-existing anions, as well as the eluant and desorption were investigated. The obtained UiO-66(Zr) showed good stability and excellent uptake capacity of M-EDTA in a wide pH range (3.0-10.0). UiO-66(Zr) exhibited a higher removal efficiency of Cu-EDTA (57.56 mg/g), Pb-EDTA (120.6 mg/g), and Ni-EDTA (54.27 mg/g). Based on the overall analysis results, our findings show that EDTA-metal complex ions can be adsorbed inside UiO-66(Zr) mainly through the Lewis-acid/-base interactions and possible anion-πinteraction with strong binding energies. Size-matching EDTA-metal complexes confined in the UiO-66(Zr) with flexible geometry would also contribute to the fast adsorption kinetics as well as the selective adsorption of different M-EDTA complexes. © 2020 Elsevier Ltd.
T2  - Journal of Environmental Chemical Engineering
T1  - Exploring UiO-66(Zr) frameworks as nanotraps for highly efficient removal of EDTA-complexed heavy metals from water
VL  - 9
IS  - 1
SP  - 104932
DO  - 10.1016/j.jece.2020.104932
ER  - 

@article{
author = "Lou, Xiaofei and Wu, Yi-nan and Kabtamu, Daniel Manaye and Matović, Ljiljana and Zhang, Yanxing and Sun, Xianyi and Schott, Eduardo and Chu, Wenhai and Li, Fengting",
year = "2021",
abstract = "Metal-organic frameworks (MOFs), an exciting class of porous crystalline materials, are suitable for adsorptive removal of toxic heavy metal-ethylenediaminetetraacetic acid (M-EDTA) complexes from wastewater. In this paper, water-stable UiO-66(Zr) with well-defined morphology was successfully synthesized through a facile microwave-assisted solvothermal method and employed as nanotraps for the efficient capture of the three M-EDTA complexes, Cu-EDTA, Pb-EDTA, and Ni-EDTA. The adsorption behaviors, effects of solution pH and co-existing anions, as well as the eluant and desorption were investigated. The obtained UiO-66(Zr) showed good stability and excellent uptake capacity of M-EDTA in a wide pH range (3.0-10.0). UiO-66(Zr) exhibited a higher removal efficiency of Cu-EDTA (57.56 mg/g), Pb-EDTA (120.6 mg/g), and Ni-EDTA (54.27 mg/g). Based on the overall analysis results, our findings show that EDTA-metal complex ions can be adsorbed inside UiO-66(Zr) mainly through the Lewis-acid/-base interactions and possible anion-πinteraction with strong binding energies. Size-matching EDTA-metal complexes confined in the UiO-66(Zr) with flexible geometry would also contribute to the fast adsorption kinetics as well as the selective adsorption of different M-EDTA complexes. © 2020 Elsevier Ltd.",
journal = "Journal of Environmental Chemical Engineering",
title = "Exploring UiO-66(Zr) frameworks as nanotraps for highly efficient removal of EDTA-complexed heavy metals from water",
volume = "9",
number = "1",
pages = "104932",
doi = "10.1016/j.jece.2020.104932"
}

Lou, X., Wu, Y., Kabtamu, D. M., Matović, L., Zhang, Y., Sun, X., Schott, E., Chu, W.,& Li, F.. (2021). Exploring UiO-66(Zr) frameworks as nanotraps for highly efficient removal of EDTA-complexed heavy metals from water. in Journal of Environmental Chemical Engineering, 9(1), 104932.
https://doi.org/10.1016/j.jece.2020.104932

Lou X, Wu Y, Kabtamu DM, Matović L, Zhang Y, Sun X, Schott E, Chu W, Li F. Exploring UiO-66(Zr) frameworks as nanotraps for highly efficient removal of EDTA-complexed heavy metals from water. in Journal of Environmental Chemical Engineering. 2021;9(1):104932.
doi:10.1016/j.jece.2020.104932 .

Lou, Xiaofei, Wu, Yi-nan, Kabtamu, Daniel Manaye, Matović, Ljiljana, Zhang, Yanxing, Sun, Xianyi, Schott, Eduardo, Chu, Wenhai, Li, Fengting, "Exploring UiO-66(Zr) frameworks as nanotraps for highly efficient removal of EDTA-complexed heavy metals from water" in Journal of Environmental Chemical Engineering, 9, no. 1 (2021):104932,
https://doi.org/10.1016/j.jece.2020.104932 . .

TY  - JOUR
AU  - Omerašević, Mia
AU  - Lukić, Miodrag
AU  - Savić-Biserčić, Marjetka
AU  - Savić, Andrija B.
AU  - Matović, Ljiljana
AU  - Baščarević, Zvezdana D.
AU  - Bučevac, Dušan
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8563
AB  - A promising method for removal of Cs ions from water and their incorporation into stable crystal structure ready for safe and permanent disposal was described. Cs-exchanged X zeolite was hot-pressed at temperature ranging from 800 to 950 °C to fabricate dense pollucite ceramics. It was found that the application of external pressure reduced the pollucite formation temperature. The effect of sintering temperature on density, phase composition and mechanical properties was investigated. The highest density of 92.5 %TD and the highest compressive strength of 79 MPa were measured in pollucite hot-pressed at 950 °C for 3 h. Heterogeneity of samples obtained at 950 °C was determined using scanning electron microscopy. The pollucite hot-pressed at 950 °C had low linear thermal expansion coefficient of ∼4.67 × 10−6 K−1 in the temperature range from 100 to 1000 °C. © 2019
T2  - Nuclear Engineering and Technology
T1  - Permanent disposal of Cs ions in the form of dense pollucite ceramics having low thermal expansion coefficient
VL  - 52
IS  - 1
SP  - 115
EP  - 122
DO  - 10.1016/j.net.2019.07.001
ER  - 

@article{
author = "Omerašević, Mia and Lukić, Miodrag and Savić-Biserčić, Marjetka and Savić, Andrija B. and Matović, Ljiljana and Baščarević, Zvezdana D. and Bučevac, Dušan",
year = "2020",
abstract = "A promising method for removal of Cs ions from water and their incorporation into stable crystal structure ready for safe and permanent disposal was described. Cs-exchanged X zeolite was hot-pressed at temperature ranging from 800 to 950 °C to fabricate dense pollucite ceramics. It was found that the application of external pressure reduced the pollucite formation temperature. The effect of sintering temperature on density, phase composition and mechanical properties was investigated. The highest density of 92.5 %TD and the highest compressive strength of 79 MPa were measured in pollucite hot-pressed at 950 °C for 3 h. Heterogeneity of samples obtained at 950 °C was determined using scanning electron microscopy. The pollucite hot-pressed at 950 °C had low linear thermal expansion coefficient of ∼4.67 × 10−6 K−1 in the temperature range from 100 to 1000 °C. © 2019",
journal = "Nuclear Engineering and Technology",
title = "Permanent disposal of Cs ions in the form of dense pollucite ceramics having low thermal expansion coefficient",
volume = "52",
number = "1",
pages = "115-122",
doi = "10.1016/j.net.2019.07.001"
}

Omerašević, M., Lukić, M., Savić-Biserčić, M., Savić, A. B., Matović, L., Baščarević, Z. D.,& Bučevac, D.. (2020). Permanent disposal of Cs ions in the form of dense pollucite ceramics having low thermal expansion coefficient. in Nuclear Engineering and Technology, 52(1), 115-122.
https://doi.org/10.1016/j.net.2019.07.001

Omerašević M, Lukić M, Savić-Biserčić M, Savić AB, Matović L, Baščarević ZD, Bučevac D. Permanent disposal of Cs ions in the form of dense pollucite ceramics having low thermal expansion coefficient. in Nuclear Engineering and Technology. 2020;52(1):115-122.
doi:10.1016/j.net.2019.07.001 .

Omerašević, Mia, Lukić, Miodrag, Savić-Biserčić, Marjetka, Savić, Andrija B., Matović, Ljiljana, Baščarević, Zvezdana D., Bučevac, Dušan, "Permanent disposal of Cs ions in the form of dense pollucite ceramics having low thermal expansion coefficient" in Nuclear Engineering and Technology, 52, no. 1 (2020):115-122,
https://doi.org/10.1016/j.net.2019.07.001 . .

TY  - JOUR
AU  - Kabtamu, Daniel Manaye
AU  - Wu, Yi-nan
AU  - Chen, Qian
AU  - Zheng, Lu
AU  - Otake, Ken-ichi
AU  - Matović, Ljiljana
AU  - Li, Fengting
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9716
AB  - The recycling of heavy metals from solid wastes and transforming these metals into useful materials, such as metal oxides, nanocomposites, and metal–organic frameworks (MOFs), are beneficial for both sustainable development and environmental protection. MOFs are promising for adsorptive desulfurization, owing to their extremely high surface areas and tunable structures. In this paper, for the first time, MIL-53(Cr) was successfully fabricated from electroplating sludge (EPS) as a metal source through a facile hydrothermal method with and without HF. Our synthetic method is novel, green, scalable, and time-efficient. The obtained MIL-53(Cr) was employed as an adsorbent for adsorptive dibenzothiophene removal from liquid fuel. MIL-53(Cr) with HF exhibits a higher desulfurization capacity (40.11 mg g–1) than that of MIL-53(Cr) without HF (32.80 mg g–1). The improved adsorption performance of MIL-53(Cr) with HF is attributed to adding a small amount of HF, which produces highly crystalline and relativity pure MIL-53(Cr) microrods with a high surface area and porosity, and is due to a robust metal–sulfur interaction. Furthermore, the regenerated adsorbent can retain 94% of its initial sulfur adsorption capability even after 5 cycles, implying that MIL-53(Cr) prepared from Cr-EPS is an efficient adsorbent for fuel desulfurization. This study provides new insight for the production of high-value-added MOF materials from solid wastes following the principle of “resource reuse”.
T2  - ACS Sustainable Chemistry and Engineering
T1  - Facile Upcycling of Hazardous Cr-Containing Electroplating Sludge into Value-Added Metal–Organic Frameworks for Efficient Adsorptive Desulfurization
VL  - 8
IS  - 33
SP  - 12443
EP  - 12452
DO  - 10.1021/acssuschemeng.0c03110
ER  - 

@article{
author = "Kabtamu, Daniel Manaye and Wu, Yi-nan and Chen, Qian and Zheng, Lu and Otake, Ken-ichi and Matović, Ljiljana and Li, Fengting",
year = "2020",
abstract = "The recycling of heavy metals from solid wastes and transforming these metals into useful materials, such as metal oxides, nanocomposites, and metal–organic frameworks (MOFs), are beneficial for both sustainable development and environmental protection. MOFs are promising for adsorptive desulfurization, owing to their extremely high surface areas and tunable structures. In this paper, for the first time, MIL-53(Cr) was successfully fabricated from electroplating sludge (EPS) as a metal source through a facile hydrothermal method with and without HF. Our synthetic method is novel, green, scalable, and time-efficient. The obtained MIL-53(Cr) was employed as an adsorbent for adsorptive dibenzothiophene removal from liquid fuel. MIL-53(Cr) with HF exhibits a higher desulfurization capacity (40.11 mg g–1) than that of MIL-53(Cr) without HF (32.80 mg g–1). The improved adsorption performance of MIL-53(Cr) with HF is attributed to adding a small amount of HF, which produces highly crystalline and relativity pure MIL-53(Cr) microrods with a high surface area and porosity, and is due to a robust metal–sulfur interaction. Furthermore, the regenerated adsorbent can retain 94% of its initial sulfur adsorption capability even after 5 cycles, implying that MIL-53(Cr) prepared from Cr-EPS is an efficient adsorbent for fuel desulfurization. This study provides new insight for the production of high-value-added MOF materials from solid wastes following the principle of “resource reuse”.",
journal = "ACS Sustainable Chemistry and Engineering",
title = "Facile Upcycling of Hazardous Cr-Containing Electroplating Sludge into Value-Added Metal–Organic Frameworks for Efficient Adsorptive Desulfurization",
volume = "8",
number = "33",
pages = "12443-12452",
doi = "10.1021/acssuschemeng.0c03110"
}

Kabtamu, D. M., Wu, Y., Chen, Q., Zheng, L., Otake, K., Matović, L.,& Li, F.. (2020). Facile Upcycling of Hazardous Cr-Containing Electroplating Sludge into Value-Added Metal–Organic Frameworks for Efficient Adsorptive Desulfurization. in ACS Sustainable Chemistry and Engineering, 8(33), 12443-12452.
https://doi.org/10.1021/acssuschemeng.0c03110

Kabtamu DM, Wu Y, Chen Q, Zheng L, Otake K, Matović L, Li F. Facile Upcycling of Hazardous Cr-Containing Electroplating Sludge into Value-Added Metal–Organic Frameworks for Efficient Adsorptive Desulfurization. in ACS Sustainable Chemistry and Engineering. 2020;8(33):12443-12452.
doi:10.1021/acssuschemeng.0c03110 .

Kabtamu, Daniel Manaye, Wu, Yi-nan, Chen, Qian, Zheng, Lu, Otake, Ken-ichi, Matović, Ljiljana, Li, Fengting, "Facile Upcycling of Hazardous Cr-Containing Electroplating Sludge into Value-Added Metal–Organic Frameworks for Efficient Adsorptive Desulfurization" in ACS Sustainable Chemistry and Engineering, 8, no. 33 (2020):12443-12452,
https://doi.org/10.1021/acssuschemeng.0c03110 . .

TY  - JOUR
AU  - Kumrić, Ksenija
AU  - Vujasin, Radojka
AU  - Egerić, Marija
AU  - Petrović, Đorđe
AU  - Devečerski, Aleksandar
AU  - Matović, Ljiljana
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8678
AB  - Solid-phase extraction (SPE) on activated carbon derived from coconut shell (CSAC) for the preconcentration of four varying polarity pesticides (imidacloprid, acetamiprid, simazine, and linuron) prior to their determination using high performance liquid chromatography with diode array detector (HPLC-DAD) was investigated. The characteristics of the CSAC were analyzed through X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR), and Brunauer-Emmett-Teller (BET) method. The effects of the solution pH, eluent type, eluent volume, and flow rate were investigated for optimization of the presented procedure. The adsorption was achieved quantitatively on the CSAC column in the pH range of 2.0–7.0, and then the retained pesticides were eluted with dichloromethane. The detection limit was found to be 0.025–0.039 μg L−1, depending on the pesticide. The proposed SPE-CSAC method was used to determine selected pesticides in tap water samples. The recoveries ranged from 58.2 to 105.3%, with low relative standard deviations. The obtained results indicated that the CSAC could be efficiently used as a low cost alternative to commercially available SPE adsorbents for the determination of the varying polarity pesticides in environmental water samples at trace levels. © 2019, Springer Nature Switzerland AG.
T2  - Water, Air, and Soil Pollution
T1  - Coconut Shell Activated Carbon as Solid-Phase Extraction Adsorbent for Preconcentration of Selected Pesticides from Water Samples
VL  - 230
IS  - 12
SP  - 302
DO  - 10.1007/s11270-019-4359-7
ER  - 

@article{
author = "Kumrić, Ksenija and Vujasin, Radojka and Egerić, Marija and Petrović, Đorđe and Devečerski, Aleksandar and Matović, Ljiljana",
year = "2019",
abstract = "Solid-phase extraction (SPE) on activated carbon derived from coconut shell (CSAC) for the preconcentration of four varying polarity pesticides (imidacloprid, acetamiprid, simazine, and linuron) prior to their determination using high performance liquid chromatography with diode array detector (HPLC-DAD) was investigated. The characteristics of the CSAC were analyzed through X-ray diffraction (XRD), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FT-IR), and Brunauer-Emmett-Teller (BET) method. The effects of the solution pH, eluent type, eluent volume, and flow rate were investigated for optimization of the presented procedure. The adsorption was achieved quantitatively on the CSAC column in the pH range of 2.0–7.0, and then the retained pesticides were eluted with dichloromethane. The detection limit was found to be 0.025–0.039 μg L−1, depending on the pesticide. The proposed SPE-CSAC method was used to determine selected pesticides in tap water samples. The recoveries ranged from 58.2 to 105.3%, with low relative standard deviations. The obtained results indicated that the CSAC could be efficiently used as a low cost alternative to commercially available SPE adsorbents for the determination of the varying polarity pesticides in environmental water samples at trace levels. © 2019, Springer Nature Switzerland AG.",
journal = "Water, Air, and Soil Pollution",
title = "Coconut Shell Activated Carbon as Solid-Phase Extraction Adsorbent for Preconcentration of Selected Pesticides from Water Samples",
volume = "230",
number = "12",
pages = "302",
doi = "10.1007/s11270-019-4359-7"
}

Kumrić, K., Vujasin, R., Egerić, M., Petrović, Đ., Devečerski, A.,& Matović, L.. (2019). Coconut Shell Activated Carbon as Solid-Phase Extraction Adsorbent for Preconcentration of Selected Pesticides from Water Samples. in Water, Air, and Soil Pollution, 230(12), 302.
https://doi.org/10.1007/s11270-019-4359-7

Kumrić K, Vujasin R, Egerić M, Petrović Đ, Devečerski A, Matović L. Coconut Shell Activated Carbon as Solid-Phase Extraction Adsorbent for Preconcentration of Selected Pesticides from Water Samples. in Water, Air, and Soil Pollution. 2019;230(12):302.
doi:10.1007/s11270-019-4359-7 .

Kumrić, Ksenija, Vujasin, Radojka, Egerić, Marija, Petrović, Đorđe, Devečerski, Aleksandar, Matović, Ljiljana, "Coconut Shell Activated Carbon as Solid-Phase Extraction Adsorbent for Preconcentration of Selected Pesticides from Water Samples" in Water, Air, and Soil Pollution, 230, no. 12 (2019):302,
https://doi.org/10.1007/s11270-019-4359-7 . .

TY  - JOUR
AU  - Vujković, Milica
AU  - Bajuk-Bogdanović, Danica V.
AU  - Matović, Ljiljana
AU  - Stojmenović, Marija
AU  - Mentus, Slavko V.
PY  - 2018
UR  - https://linkinghub.elsevier.com/retrieve/pii/S0008622318307036
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7872
AB  - Coulombic capacity of zeolite-templated carbon (ZTC) measured in alkaline solution was roughly doubled by a previous potentiodynamic treatment in sulfuric acidic solution. In order to explain the reasons of this capacity improvement, the changes in chemical composition of ZTC surface during its pretreatment in sulfuric acid either by simple immersion, or by potentiodynamic polarization, and during subsequent potentiodynamic polarization in KOH solutions, were studied by means of TG/DTA, FTIR spectroscopy and Raman spectroscopy. The results of this study open some novel insights in understanding of very peculiar carbon electrochemistry. The observed changes in surface chemistry include i) fast adsorption of H2O and formation of OH− and epoxide groups on immersion in sulfuric acid, ii) the multiplication of concentration of H2O/OH− and epoxide groups during potentiodynamic cycling in sulfuric acid and iii) the ring-opening of epoxide groups (formed during potentiodynamic cycling in acidic solution) upon its potentiodynamic cycling in alkaline solution, according to a SN2 type mechanism, which results in the formation of aromatic OH-containing diol compounds. © 2018 Elsevier Ltd
T2  - Carbon
T1  - Mild electrochemical oxidation of zeolite templated carbon in acidic solutions, as a way to boost its charge storage properties in alkaline solutions
VL  - 138
SP  - 369
EP  - 378
DO  - 10.1016/j.carbon.2018.07.053
ER  - 

@article{
author = "Vujković, Milica and Bajuk-Bogdanović, Danica V. and Matović, Ljiljana and Stojmenović, Marija and Mentus, Slavko V.",
year = "2018",
abstract = "Coulombic capacity of zeolite-templated carbon (ZTC) measured in alkaline solution was roughly doubled by a previous potentiodynamic treatment in sulfuric acidic solution. In order to explain the reasons of this capacity improvement, the changes in chemical composition of ZTC surface during its pretreatment in sulfuric acid either by simple immersion, or by potentiodynamic polarization, and during subsequent potentiodynamic polarization in KOH solutions, were studied by means of TG/DTA, FTIR spectroscopy and Raman spectroscopy. The results of this study open some novel insights in understanding of very peculiar carbon electrochemistry. The observed changes in surface chemistry include i) fast adsorption of H2O and formation of OH− and epoxide groups on immersion in sulfuric acid, ii) the multiplication of concentration of H2O/OH− and epoxide groups during potentiodynamic cycling in sulfuric acid and iii) the ring-opening of epoxide groups (formed during potentiodynamic cycling in acidic solution) upon its potentiodynamic cycling in alkaline solution, according to a SN2 type mechanism, which results in the formation of aromatic OH-containing diol compounds. © 2018 Elsevier Ltd",
journal = "Carbon",
title = "Mild electrochemical oxidation of zeolite templated carbon in acidic solutions, as a way to boost its charge storage properties in alkaline solutions",
volume = "138",
pages = "369-378",
doi = "10.1016/j.carbon.2018.07.053"
}

Vujković, M., Bajuk-Bogdanović, D. V., Matović, L., Stojmenović, M.,& Mentus, S. V.. (2018). Mild electrochemical oxidation of zeolite templated carbon in acidic solutions, as a way to boost its charge storage properties in alkaline solutions. in Carbon, 138, 369-378.
https://doi.org/10.1016/j.carbon.2018.07.053

Vujković M, Bajuk-Bogdanović DV, Matović L, Stojmenović M, Mentus SV. Mild electrochemical oxidation of zeolite templated carbon in acidic solutions, as a way to boost its charge storage properties in alkaline solutions. in Carbon. 2018;138:369-378.
doi:10.1016/j.carbon.2018.07.053 .

Vujković, Milica, Bajuk-Bogdanović, Danica V., Matović, Ljiljana, Stojmenović, Marija, Mentus, Slavko V., "Mild electrochemical oxidation of zeolite templated carbon in acidic solutions, as a way to boost its charge storage properties in alkaline solutions" in Carbon, 138 (2018):369-378,
https://doi.org/10.1016/j.carbon.2018.07.053 . .

TY  - JOUR
AU  - Omerašević, Mia
AU  - Ružić, Jovana
AU  - Vasiljević-Nedić, Bojana
AU  - Baščarević, Zvezdana D.
AU  - Bučevac, Dušan
AU  - Orlić, Jovana
AU  - Matović, Ljiljana
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1734
AB  - Dense CsAlSi5O12 was successfully obtained by hot pressing of Cs-exchanged clinoptilolite at 900 degrees C. Simultaneous application of high temperature and mechanical pressure allowed formation of CsAlSi5O12 at temperature considerably lower than 1150 degrees C which was the lowest reported temperature of CsAlSi5O12 formation in pressureless sintered Cs-exchanged clinoptilolite. CsAlSi5O12 formation was preceded by complete amorphisation of Cs-exchanged clinoptilolite in temperature range between 700 and 900 degrees C. Bearing in mind that clinoptilolite possesses high affinity for Cs cation it is believed that hot pressing of Cs-exchanged clinoptilolite might be an efficient way to immobilize radioactive Cs by its incorporation into crystal lattice of stable CsAlSi5O12. The samples sintered at 950 degrees C had relative density about 84% of theoretical density and open porosity of only 6% which is expected to result in low Cs leaching rate.
T2  - Ceramics International
T1  - Transformation of Cs-exchanged clinoptilolite to CsAlSi5O12 by hot-pressing
VL  - 43
IS  - 16
SP  - 13500
EP  - 13504
DO  - 10.1016/j.ceramint.2017.07.055
ER  - 

@article{
author = "Omerašević, Mia and Ružić, Jovana and Vasiljević-Nedić, Bojana and Baščarević, Zvezdana D. and Bučevac, Dušan and Orlić, Jovana and Matović, Ljiljana",
year = "2017",
abstract = "Dense CsAlSi5O12 was successfully obtained by hot pressing of Cs-exchanged clinoptilolite at 900 degrees C. Simultaneous application of high temperature and mechanical pressure allowed formation of CsAlSi5O12 at temperature considerably lower than 1150 degrees C which was the lowest reported temperature of CsAlSi5O12 formation in pressureless sintered Cs-exchanged clinoptilolite. CsAlSi5O12 formation was preceded by complete amorphisation of Cs-exchanged clinoptilolite in temperature range between 700 and 900 degrees C. Bearing in mind that clinoptilolite possesses high affinity for Cs cation it is believed that hot pressing of Cs-exchanged clinoptilolite might be an efficient way to immobilize radioactive Cs by its incorporation into crystal lattice of stable CsAlSi5O12. The samples sintered at 950 degrees C had relative density about 84% of theoretical density and open porosity of only 6% which is expected to result in low Cs leaching rate.",
journal = "Ceramics International",
title = "Transformation of Cs-exchanged clinoptilolite to CsAlSi5O12 by hot-pressing",
volume = "43",
number = "16",
pages = "13500-13504",
doi = "10.1016/j.ceramint.2017.07.055"
}

Omerašević, M., Ružić, J., Vasiljević-Nedić, B., Baščarević, Z. D., Bučevac, D., Orlić, J.,& Matović, L.. (2017). Transformation of Cs-exchanged clinoptilolite to CsAlSi5O12 by hot-pressing. in Ceramics International, 43(16), 13500-13504.
https://doi.org/10.1016/j.ceramint.2017.07.055

Omerašević M, Ružić J, Vasiljević-Nedić B, Baščarević ZD, Bučevac D, Orlić J, Matović L. Transformation of Cs-exchanged clinoptilolite to CsAlSi5O12 by hot-pressing. in Ceramics International. 2017;43(16):13500-13504.
doi:10.1016/j.ceramint.2017.07.055 .

Omerašević, Mia, Ružić, Jovana, Vasiljević-Nedić, Bojana, Baščarević, Zvezdana D., Bučevac, Dušan, Orlić, Jovana, Matović, Ljiljana, "Transformation of Cs-exchanged clinoptilolite to CsAlSi5O12 by hot-pressing" in Ceramics International, 43, no. 16 (2017):13500-13504,
https://doi.org/10.1016/j.ceramint.2017.07.055 . .

TY  - JOUR
AU  - Matović, Ljiljana
AU  - Đukić, Anđelka B.
AU  - Omeraevic, M.
AU  - Kumrić, Ksenija
AU  - Rosskopfova, O.
AU  - Hamarova, A.
AU  - Rajec, Pavol
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1802
AB  - Low-cost adsorbents, synthesized by pyrolysis of waste rubber (CR) and activated with KOH (CRA), have shown the high removal ability of from aqueous solutions in wide range of pHs (2-10) with fast adsorption rate. The Langmuir and Freundlich models suggests monolayer and multilayer adsorption of onto CR and CRA surface, respectively. The removal mechanism of from solution occurs by replacement with OH- from surface groups (phenolic and/or accompanying carboxylic) of CR and CRA indicating anion exchange mechanism.
T2  - Journal of Radioanalytical and Nuclear Chemistry
T1  - Removal of pertechnetate from aqueous solution using activated pyrolytic rubber char
VL  - 314
IS  - 2
SP  - 897
EP  - 905
DO  - 10.1007/s10967-017-5442-4
ER  - 

@article{
author = "Matović, Ljiljana and Đukić, Anđelka B. and Omeraevic, M. and Kumrić, Ksenija and Rosskopfova, O. and Hamarova, A. and Rajec, Pavol",
year = "2017",
abstract = "Low-cost adsorbents, synthesized by pyrolysis of waste rubber (CR) and activated with KOH (CRA), have shown the high removal ability of from aqueous solutions in wide range of pHs (2-10) with fast adsorption rate. The Langmuir and Freundlich models suggests monolayer and multilayer adsorption of onto CR and CRA surface, respectively. The removal mechanism of from solution occurs by replacement with OH- from surface groups (phenolic and/or accompanying carboxylic) of CR and CRA indicating anion exchange mechanism.",
journal = "Journal of Radioanalytical and Nuclear Chemistry",
title = "Removal of pertechnetate from aqueous solution using activated pyrolytic rubber char",
volume = "314",
number = "2",
pages = "897-905",
doi = "10.1007/s10967-017-5442-4"
}

Matović, L., Đukić, A. B., Omeraevic, M., Kumrić, K., Rosskopfova, O., Hamarova, A.,& Rajec, P.. (2017). Removal of pertechnetate from aqueous solution using activated pyrolytic rubber char. in Journal of Radioanalytical and Nuclear Chemistry, 314(2), 897-905.
https://doi.org/10.1007/s10967-017-5442-4

Matović L, Đukić AB, Omeraevic M, Kumrić K, Rosskopfova O, Hamarova A, Rajec P. Removal of pertechnetate from aqueous solution using activated pyrolytic rubber char. in Journal of Radioanalytical and Nuclear Chemistry. 2017;314(2):897-905.
doi:10.1007/s10967-017-5442-4 .

Matović, Ljiljana, Đukić, Anđelka B., Omeraevic, M., Kumrić, Ksenija, Rosskopfova, O., Hamarova, A., Rajec, Pavol, "Removal of pertechnetate from aqueous solution using activated pyrolytic rubber char" in Journal of Radioanalytical and Nuclear Chemistry, 314, no. 2 (2017):897-905,
https://doi.org/10.1007/s10967-017-5442-4 . .

TY  - JOUR
AU  - Vujković, Milica
AU  - Matović, Ljiljana
AU  - Krstić, Jugoslav B.
AU  - Stojmenović, Marija
AU  - Đukić, Anđelka B.
AU  - Babić, Biljana M.
AU  - Mentus, Slavko V.
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1661
AB  - The activated carbon cloth (ACC), obtained by chemical/physical activation of carbonized rayon fibers, was grinded in a ball mill and studied from the aspect of double layer capacitance. The changes in pore structure, morphology and acid/basic properties caused by ball milling were studied by means of N-2 adsorption/desorption, Fourier-transformed infrared spectrometry, Boehms titration and Scanning Electron Microscopy. Both potentiodynamic and galvanostatic cycling were used to evaluate the double layer capacitance in three alkaline, acidic and neutral aqueous solutions (KOH, H2SO4 and Na2SO4). While double layer capacitance of original ACC was found to be negligible, ball milled material (ACCm) displayed capacitance in the range of supercapacitors. In order to explain this huge capacitance improvement, we found that ball milling substantially increased the concentration of lactone, phenolic and quinone groups on the surface. We suggest that these groups, through improved hydrophilicity, enable faster ion diffusion into carbon micropores. The energy density stored by double layer was highest in neutral sodium sulphate solution. Namely, operational voltage of similar to 2 V and double layer capacitance of 220 F g(-1) at 1A g(-1), enable the energy density of ACCm/Na2SO4/ACCm capacitor of 31.7 Wh kg(-1) at 2000 W kg(-1), much higher than that of commercial EDLC carbon capacitors. According to the here presented literature survey in a tabular form, the energy density of the studied sample is also higher from that of numerous thus far published aqueous carbon capacitors. (C) 2017 Elsevier Ltd. All rights reserved.
T2  - Electrochimica Acta
T1  - Mechanically activated carbonized rayon fibers as an electrochemical supercapacitor in aqueous solutions
VL  - 245
SP  - 796
EP  - 806
DO  - 10.1016/j.electacta.2017.06.018
ER  - 

@article{
author = "Vujković, Milica and Matović, Ljiljana and Krstić, Jugoslav B. and Stojmenović, Marija and Đukić, Anđelka B. and Babić, Biljana M. and Mentus, Slavko V.",
year = "2017",
abstract = "The activated carbon cloth (ACC), obtained by chemical/physical activation of carbonized rayon fibers, was grinded in a ball mill and studied from the aspect of double layer capacitance. The changes in pore structure, morphology and acid/basic properties caused by ball milling were studied by means of N-2 adsorption/desorption, Fourier-transformed infrared spectrometry, Boehms titration and Scanning Electron Microscopy. Both potentiodynamic and galvanostatic cycling were used to evaluate the double layer capacitance in three alkaline, acidic and neutral aqueous solutions (KOH, H2SO4 and Na2SO4). While double layer capacitance of original ACC was found to be negligible, ball milled material (ACCm) displayed capacitance in the range of supercapacitors. In order to explain this huge capacitance improvement, we found that ball milling substantially increased the concentration of lactone, phenolic and quinone groups on the surface. We suggest that these groups, through improved hydrophilicity, enable faster ion diffusion into carbon micropores. The energy density stored by double layer was highest in neutral sodium sulphate solution. Namely, operational voltage of similar to 2 V and double layer capacitance of 220 F g(-1) at 1A g(-1), enable the energy density of ACCm/Na2SO4/ACCm capacitor of 31.7 Wh kg(-1) at 2000 W kg(-1), much higher than that of commercial EDLC carbon capacitors. According to the here presented literature survey in a tabular form, the energy density of the studied sample is also higher from that of numerous thus far published aqueous carbon capacitors. (C) 2017 Elsevier Ltd. All rights reserved.",
journal = "Electrochimica Acta",
title = "Mechanically activated carbonized rayon fibers as an electrochemical supercapacitor in aqueous solutions",
volume = "245",
pages = "796-806",
doi = "10.1016/j.electacta.2017.06.018"
}

Vujković, M., Matović, L., Krstić, J. B., Stojmenović, M., Đukić, A. B., Babić, B. M.,& Mentus, S. V.. (2017). Mechanically activated carbonized rayon fibers as an electrochemical supercapacitor in aqueous solutions. in Electrochimica Acta, 245, 796-806.
https://doi.org/10.1016/j.electacta.2017.06.018

Vujković M, Matović L, Krstić JB, Stojmenović M, Đukić AB, Babić BM, Mentus SV. Mechanically activated carbonized rayon fibers as an electrochemical supercapacitor in aqueous solutions. in Electrochimica Acta. 2017;245:796-806.
doi:10.1016/j.electacta.2017.06.018 .

Vujković, Milica, Matović, Ljiljana, Krstić, Jugoslav B., Stojmenović, Marija, Đukić, Anđelka B., Babić, Biljana M., Mentus, Slavko V., "Mechanically activated carbonized rayon fibers as an electrochemical supercapacitor in aqueous solutions" in Electrochimica Acta, 245 (2017):796-806,
https://doi.org/10.1016/j.electacta.2017.06.018 . .