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  - Vlahović, Milica
AU  - Alil, Ana
AU  - Devečerski, Aleksandar
AU  - Živojinović, Dragana
AU  - Volkov Husović, Tatjana
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11462
AB  - In many industrial processes that include fluid flow, cavitation erosion of different engineeringstructures (pumps, turbines, water levels, valves, etc.) during their operation is expected. Metallic,ceramic, and composite materials are usual candidates considered for application in such extremeconditions. In this study, the idea is to synthesize refractory ceramic material based on talc withthe addition of zeolite for utilization as protective coatings in cavitating conditions. Two talc-basedrefractories with zeolites from two Serbian deposits were produced. The behaviors of the samplesin simulated cavitation conditions were examined by an advanced non-destructive methodologyconsisting of monitoring mass loss and surface degradation using image analysis compiled withprincipal component analysis (PCA), interior degradation by ultrasonic measurements, and themicrostructure by a scanning electron microscope (SEM). Lower mass loss, surface degradation level,and modeled strength decrease indicated better cavitation resistance of the sample with Igros zeolite,whereby measured strength values validated the model. For the chosen critical strength, the criticalcavitation period as well as critical morphological descriptors, Area and Diameter (max and min),were determined. A Young’s elasticity modulus decrease indicated that surface damage influenceprogressed towards interior of the material. It can be concluded that the proposed methodologyapproach is efficient and reliable in predicting the materials’ service life in extreme conditions.
T2  - Materials
T1  - Non-Destructive Examination for Cavitation Resistance of Talc-Based Refractories with Different Zeolite Types Intended for Protective Coatings
VL  - 16
IS  - 16
SP  - 5577
DO  - 10.3390/ma16165577
ER  - 

@article{
author = "Vlahović, Milica and Alil, Ana and Devečerski, Aleksandar and Živojinović, Dragana and Volkov Husović, Tatjana",
year = "2023",
abstract = "In many industrial processes that include fluid flow, cavitation erosion of different engineeringstructures (pumps, turbines, water levels, valves, etc.) during their operation is expected. Metallic,ceramic, and composite materials are usual candidates considered for application in such extremeconditions. In this study, the idea is to synthesize refractory ceramic material based on talc withthe addition of zeolite for utilization as protective coatings in cavitating conditions. Two talc-basedrefractories with zeolites from two Serbian deposits were produced. The behaviors of the samplesin simulated cavitation conditions were examined by an advanced non-destructive methodologyconsisting of monitoring mass loss and surface degradation using image analysis compiled withprincipal component analysis (PCA), interior degradation by ultrasonic measurements, and themicrostructure by a scanning electron microscope (SEM). Lower mass loss, surface degradation level,and modeled strength decrease indicated better cavitation resistance of the sample with Igros zeolite,whereby measured strength values validated the model. For the chosen critical strength, the criticalcavitation period as well as critical morphological descriptors, Area and Diameter (max and min),were determined. A Young’s elasticity modulus decrease indicated that surface damage influenceprogressed towards interior of the material. It can be concluded that the proposed methodologyapproach is efficient and reliable in predicting the materials’ service life in extreme conditions.",
journal = "Materials",
title = "Non-Destructive Examination for Cavitation Resistance of Talc-Based Refractories with Different Zeolite Types Intended for Protective Coatings",
volume = "16",
number = "16",
pages = "5577",
doi = "10.3390/ma16165577"
}

Vlahović, M., Alil, A., Devečerski, A., Živojinović, D.,& Volkov Husović, T.. (2023). Non-Destructive Examination for Cavitation Resistance of Talc-Based Refractories with Different Zeolite Types Intended for Protective Coatings. in Materials, 16(16), 5577.
https://doi.org/10.3390/ma16165577

Vlahović M, Alil A, Devečerski A, Živojinović D, Volkov Husović T. Non-Destructive Examination for Cavitation Resistance of Talc-Based Refractories with Different Zeolite Types Intended for Protective Coatings. in Materials. 2023;16(16):5577.
doi:10.3390/ma16165577 .

Vlahović, Milica, Alil, Ana, Devečerski, Aleksandar, Živojinović, Dragana, Volkov Husović, Tatjana, "Non-Destructive Examination for Cavitation Resistance of Talc-Based Refractories with Different Zeolite Types Intended for Protective Coatings" in Materials, 16, no. 16 (2023):5577,
https://doi.org/10.3390/ma16165577 . .

TY  - CONF
AU  - Krstić, Sanja
AU  - Kaluđerović, Branka
AU  - Dodevski, Vladimir
AU  - Čebela, Maria
AU  - Košević, Milica
AU  - Devečerski, Aleksandar
AU  - Petrović, Đorđe
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11514
AB  - In presented work, influence of temperature, starting material concentration and different activation agents (hydroxides) on properties and morphology of activated carbon materials obtained from sucrose were investigated. [1] The samples were prepared by hydrothermal treatment and activated using KOH, NaOH and LiOH. Two saccharose concentrations (0.5, 1.0 mol/dm3) and three different temperatures (180, 220, 260 ºC) were changed in hydrothermal treatment. Activation processes were performed at 800 ºC under inert atmosphere. Obtained samples were characterized by X–ray powder diffractometry, elemental analysis, N2 adsorption-desorption measurements, Fourier–transform infrared spectrometry, scanning electron microscopy and thermal analysis. [2] The obtained samples were tested for potential application for cyclic voltammetry and electrochemical impedance spectroscopy and correlated to physicochemical properties.
PB  - University of Belgrade : Faculty of Physical Chemistry
C3  - COIN 2022 : Contemporary Batteries and Supercapacitors - International Symposium Belgrade 2022 : program and book of abstracts; June 1-2; Belgrade
T1  - Characterization and Application of Activated Carbon Materials Obtained
from Sucrose by Chemical Activation Process
SP  - 33
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11514
ER  - 

@conference{
author = "Krstić, Sanja and Kaluđerović, Branka and Dodevski, Vladimir and Čebela, Maria and Košević, Milica and Devečerski, Aleksandar and Petrović, Đorđe",
year = "2022",
abstract = "In presented work, influence of temperature, starting material concentration and different activation agents (hydroxides) on properties and morphology of activated carbon materials obtained from sucrose were investigated. [1] The samples were prepared by hydrothermal treatment and activated using KOH, NaOH and LiOH. Two saccharose concentrations (0.5, 1.0 mol/dm3) and three different temperatures (180, 220, 260 ºC) were changed in hydrothermal treatment. Activation processes were performed at 800 ºC under inert atmosphere. Obtained samples were characterized by X–ray powder diffractometry, elemental analysis, N2 adsorption-desorption measurements, Fourier–transform infrared spectrometry, scanning electron microscopy and thermal analysis. [2] The obtained samples were tested for potential application for cyclic voltammetry and electrochemical impedance spectroscopy and correlated to physicochemical properties.",
publisher = "University of Belgrade : Faculty of Physical Chemistry",
journal = "COIN 2022 : Contemporary Batteries and Supercapacitors - International Symposium Belgrade 2022 : program and book of abstracts; June 1-2; Belgrade",
title = "Characterization and Application of Activated Carbon Materials Obtained
from Sucrose by Chemical Activation Process",
pages = "33",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11514"
}

Krstić, S., Kaluđerović, B., Dodevski, V., Čebela, M., Košević, M., Devečerski, A.,& Petrović, Đ.. (2022). Characterization and Application of Activated Carbon Materials Obtained
from Sucrose by Chemical Activation Process. in COIN 2022 : Contemporary Batteries and Supercapacitors - International Symposium Belgrade 2022 : program and book of abstracts; June 1-2; Belgrade
University of Belgrade : Faculty of Physical Chemistry., 33.
https://hdl.handle.net/21.15107/rcub_vinar_11514

Krstić S, Kaluđerović B, Dodevski V, Čebela M, Košević M, Devečerski A, Petrović Đ. Characterization and Application of Activated Carbon Materials Obtained
from Sucrose by Chemical Activation Process. in COIN 2022 : Contemporary Batteries and Supercapacitors - International Symposium Belgrade 2022 : program and book of abstracts; June 1-2; Belgrade. 2022;:33.
https://hdl.handle.net/21.15107/rcub_vinar_11514 .

Krstić, Sanja, Kaluđerović, Branka, Dodevski, Vladimir, Čebela, Maria, Košević, Milica, Devečerski, Aleksandar, Petrović, Đorđe, "Characterization and Application of Activated Carbon Materials Obtained
from Sucrose by Chemical Activation Process" in COIN 2022 : Contemporary Batteries and Supercapacitors - International Symposium Belgrade 2022 : program and book of abstracts; June 1-2; Belgrade (2022):33,
https://hdl.handle.net/21.15107/rcub_vinar_11514 .

TY  - CONF
AU  - Krstić, Sanja
AU  - Kaluđerović, Branka
AU  - Dodevski, Vladimir
AU  - Čebela, Maria
AU  - Košević, Milica
AU  - Devečerski, Aleksandar
AU  - Vujasin, Radojka
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11506
AB  - In presented work, influence of temperature, starting material concentration and
different hydroxides on properties and morphology of activated carbon obtained
from saccharose were investigated. The samples were prepared by hydrothermal
treatment and activated using KOH, NaOH and LiOH. Two saccharose
concentrations (0.5, 1.0 mol/dm3
) and three different temperatures (160, 200, 240
°C) were changed in hydrothermal treatment. Activation processes were performed
at 750 °C under inert atmosphere. Obtained samples were characterized by X–ray
powder diffractometry, elemental analysis, N2 adsorption-desorption measurements,
Fourier–transform infrared spectrometry, scanning electron microscopy and thermal
analysis. The obtained samples were tested for potential application in dyes removal
(Methylene Blue and Methyl Orange) from water solutions.
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  - Hydrothermal synthesis, characterization and application of activated carbon materials obtained from saccharides
SP  - 66
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11506
ER  - 

@conference{
author = "Krstić, Sanja and Kaluđerović, Branka and Dodevski, Vladimir and Čebela, Maria and Košević, Milica and Devečerski, Aleksandar and Vujasin, Radojka",
year = "2022",
abstract = "In presented work, influence of temperature, starting material concentration and
different hydroxides on properties and morphology of activated carbon obtained
from saccharose were investigated. The samples were prepared by hydrothermal
treatment and activated using KOH, NaOH and LiOH. Two saccharose
concentrations (0.5, 1.0 mol/dm3
) and three different temperatures (160, 200, 240
°C) were changed in hydrothermal treatment. Activation processes were performed
at 750 °C under inert atmosphere. Obtained samples were characterized by X–ray
powder diffractometry, elemental analysis, N2 adsorption-desorption measurements,
Fourier–transform infrared spectrometry, scanning electron microscopy and thermal
analysis. The obtained samples were tested for potential application in dyes removal
(Methylene Blue and Methyl Orange) from water solutions.",
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 = "Hydrothermal synthesis, characterization and application of activated carbon materials obtained from saccharides",
pages = "66",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11506"
}

Krstić, S., Kaluđerović, B., Dodevski, V., Čebela, M., Košević, M., Devečerski, A.,& Vujasin, R.. (2022). Hydrothermal synthesis, characterization and application of activated carbon materials obtained from saccharides. in 6CSCS : 6th Serbian Ceramic Society Conference : programme and the book of abstracts; June 28-29; Belgrade
University of Belgrade : Institute for Multidisciplinary Research., 66.
https://hdl.handle.net/21.15107/rcub_vinar_11506

Krstić S, Kaluđerović B, Dodevski V, Čebela M, Košević M, Devečerski A, Vujasin R. Hydrothermal synthesis, characterization and application of activated carbon materials obtained from saccharides. in 6CSCS : 6th Serbian Ceramic Society Conference : programme and the book of abstracts; June 28-29; Belgrade. 2022;:66.
https://hdl.handle.net/21.15107/rcub_vinar_11506 .

Krstić, Sanja, Kaluđerović, Branka, Dodevski, Vladimir, Čebela, Maria, Košević, Milica, Devečerski, Aleksandar, Vujasin, Radojka, "Hydrothermal synthesis, characterization and application of activated carbon materials obtained from saccharides" in 6CSCS : 6th Serbian Ceramic Society Conference : programme and the book of abstracts; June 28-29; Belgrade (2022):66,
https://hdl.handle.net/21.15107/rcub_vinar_11506 .

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  - Omerašević, Mia
AU  - Baščarević, Zvezdana D.
AU  - Vujasin, Radojka
AU  - Devečerski, Aleksandar
AU  - Bučevac, Dušan
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10432
AB  - Anorthite ceramics was fabricated from calcium exchanged Na-LTA zeolite. The powder compacts of Ca-LTA zeolite were sintered at different temperatures ranging between 1100 and 1400°C. It was found that the temperature of 1100°C was sufficiently high to trigger formation of anorthite which stayed stable even at temperature as high as 1400°C. The highest relative density and the lowest open porosity were measured in samples sintered at 1200°C for 3 h. The effect of milling time of Ca-LTA zeolite precursor on density, microstructure and mechanical properties of samples sintered at 1200°C for 3 h was investigated. The particle size refinement appeared to be beneficial in accelerating densification process and improving mechanical properties. The density, compressive strength and hardness of anorthite ceramics obtained from non-milled precursor were measured to be 70.5 %TD, 64 MPa and 1.45 GPa, respectively. On the other side the anorthite ceramics obtained from 24-hour-long milled zeolite precursor had density of 83.9 %TD, compressive strength of 101 MPa and hardness of 3.44 GPa.
T2  - Science of Sintering
T1  - Effect of Milling Time on Mechanical Properties of Anorthite Obtained by Thermal Transformation of Ca-LTA Zeolite
VL  - 54
IS  - 3
SP  - 349
EP  - 358
DO  - 10.2298/SOS2203349O
ER  - 

@article{
author = "Omerašević, Mia and Baščarević, Zvezdana D. and Vujasin, Radojka and Devečerski, Aleksandar and Bučevac, Dušan",
year = "2022",
abstract = "Anorthite ceramics was fabricated from calcium exchanged Na-LTA zeolite. The powder compacts of Ca-LTA zeolite were sintered at different temperatures ranging between 1100 and 1400°C. It was found that the temperature of 1100°C was sufficiently high to trigger formation of anorthite which stayed stable even at temperature as high as 1400°C. The highest relative density and the lowest open porosity were measured in samples sintered at 1200°C for 3 h. The effect of milling time of Ca-LTA zeolite precursor on density, microstructure and mechanical properties of samples sintered at 1200°C for 3 h was investigated. The particle size refinement appeared to be beneficial in accelerating densification process and improving mechanical properties. The density, compressive strength and hardness of anorthite ceramics obtained from non-milled precursor were measured to be 70.5 %TD, 64 MPa and 1.45 GPa, respectively. On the other side the anorthite ceramics obtained from 24-hour-long milled zeolite precursor had density of 83.9 %TD, compressive strength of 101 MPa and hardness of 3.44 GPa.",
journal = "Science of Sintering",
title = "Effect of Milling Time on Mechanical Properties of Anorthite Obtained by Thermal Transformation of Ca-LTA Zeolite",
volume = "54",
number = "3",
pages = "349-358",
doi = "10.2298/SOS2203349O"
}

Omerašević, M., Baščarević, Z. D., Vujasin, R., Devečerski, A.,& Bučevac, D.. (2022). Effect of Milling Time on Mechanical Properties of Anorthite Obtained by Thermal Transformation of Ca-LTA Zeolite. in Science of Sintering, 54(3), 349-358.
https://doi.org/10.2298/SOS2203349O

Omerašević M, Baščarević ZD, Vujasin R, Devečerski A, Bučevac D. Effect of Milling Time on Mechanical Properties of Anorthite Obtained by Thermal Transformation of Ca-LTA Zeolite. in Science of Sintering. 2022;54(3):349-358.
doi:10.2298/SOS2203349O .

Omerašević, Mia, Baščarević, Zvezdana D., Vujasin, Radojka, Devečerski, Aleksandar, Bučevac, Dušan, "Effect of Milling Time on Mechanical Properties of Anorthite Obtained by Thermal Transformation of Ca-LTA Zeolite" in Science of Sintering, 54, no. 3 (2022):349-358,
https://doi.org/10.2298/SOS2203349O . .

TY  - CONF
AU  - Krstić, Sanja S.
AU  - Dodevski, Vladimir
AU  - Čokeša, Đuro
AU  - Devečerski, Aleksandar
AU  - Vujasin, Radojka
AU  - Kumrić, Ksenija
AU  - Kaluđerović, Branka V.
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10781
AB  - Carbon material with active surface properties have been synthesized by hydrothermal method from fructose using 40% and 80% phosphoric acid (H3 PO4 ) solution, at temperature of 260°C and fructose concentration of 2M. The aim of this investigation was active carbon material synthesis which is completed by one step reaction, which was not the case in our previous works. Thus, compared with other samples from our works, this way is more economic and faster since both reaction of carbonization and activation was finished in one step. The hydrothermal process, in general, includes heat treatment of carbohydrate solutions under autogenous pressure at low temperatures (150–260 °C). Obtained solid carbon material has uniform morphology, amorphous structure and high content of oxygen functional groups. Prepared active carbon material is made up of spherical microsphere particles with the diameter in the range of 0.6-2.7 μm. The morphology and surface properties of obtained material were characterized by scanning electron microscopy (SEM), Fourier-transform infrared (FTIR) spectra. Adsorption and desorption isotherms of N2 were measured on carbon containing material at -196 °C using the gravimetric McBain method. Adsorption from aqueous solutions of Methylene Blue (MB) onto prepared carbon material was conducted by changing concentration of MB from 200-500mg/dm3 . The best fit of the kinetic results was achieved by a pseudo second-order equation. Also, this nature of material is applicable in other systems regarding environmental protection and dye pollution prevention.
PB  - Belgrade : Serbian Ceramic Society
C3  - Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade
T1  - Preparation and Characterization Of Active Carbon Microspheres Obtained From Fructose And Adsorption Application
SP  - 38
UR  - https://hdl.handle.net/21.15107/rcub_vinar_10781
ER  - 

@conference{
author = "Krstić, Sanja S. and Dodevski, Vladimir and Čokeša, Đuro and Devečerski, Aleksandar and Vujasin, Radojka and Kumrić, Ksenija and Kaluđerović, Branka V.",
year = "2021",
abstract = "Carbon material with active surface properties have been synthesized by hydrothermal method from fructose using 40% and 80% phosphoric acid (H3 PO4 ) solution, at temperature of 260°C and fructose concentration of 2M. The aim of this investigation was active carbon material synthesis which is completed by one step reaction, which was not the case in our previous works. Thus, compared with other samples from our works, this way is more economic and faster since both reaction of carbonization and activation was finished in one step. The hydrothermal process, in general, includes heat treatment of carbohydrate solutions under autogenous pressure at low temperatures (150–260 °C). Obtained solid carbon material has uniform morphology, amorphous structure and high content of oxygen functional groups. Prepared active carbon material is made up of spherical microsphere particles with the diameter in the range of 0.6-2.7 μm. The morphology and surface properties of obtained material were characterized by scanning electron microscopy (SEM), Fourier-transform infrared (FTIR) spectra. Adsorption and desorption isotherms of N2 were measured on carbon containing material at -196 °C using the gravimetric McBain method. Adsorption from aqueous solutions of Methylene Blue (MB) onto prepared carbon material was conducted by changing concentration of MB from 200-500mg/dm3 . The best fit of the kinetic results was achieved by a pseudo second-order equation. Also, this nature of material is applicable in other systems regarding environmental protection and dye pollution prevention.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade",
title = "Preparation and Characterization Of Active Carbon Microspheres Obtained From Fructose And Adsorption Application",
pages = "38",
url = "https://hdl.handle.net/21.15107/rcub_vinar_10781"
}

Krstić, S. S., Dodevski, V., Čokeša, Đ., Devečerski, A., Vujasin, R., Kumrić, K.,& Kaluđerović, B. V.. (2021). Preparation and Characterization Of Active Carbon Microspheres Obtained From Fructose And Adsorption Application. in Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade
Belgrade : Serbian Ceramic Society., 38.
https://hdl.handle.net/21.15107/rcub_vinar_10781

Krstić SS, Dodevski V, Čokeša Đ, Devečerski A, Vujasin R, Kumrić K, Kaluđerović BV. Preparation and Characterization Of Active Carbon Microspheres Obtained From Fructose And Adsorption Application. in Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade. 2021;:38.
https://hdl.handle.net/21.15107/rcub_vinar_10781 .

Krstić, Sanja S., Dodevski, Vladimir, Čokeša, Đuro, Devečerski, Aleksandar, Vujasin, Radojka, Kumrić, Ksenija, Kaluđerović, Branka V., "Preparation and Characterization Of Active Carbon Microspheres Obtained From Fructose And Adsorption Application" in Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade (2021):38,
https://hdl.handle.net/21.15107/rcub_vinar_10781 .

TY  - CONF
AU  - Krstić, Sanja S.
AU  - Dodevski, Vladimir
AU  - Čokeša, Đuro
AU  - Devečerski, Aleksandar
AU  - Vujasin, Radojka
AU  - Kumrić, Ksenija
AU  - Kaluđerović, Branka V.
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10841
AB  - A carbon-rich solid product has been synthesized by hydrothermal treatment from fructose with phosphoric acid (H3 PO4 ) at temperature of 250°C and pH value of 0.65. The concentration of the precursor was constant, i.e. 2M of fructose in form of aqueous solution. The formation of the carbon-rich solid material through the hydrothermal carbonization of fructose is the consequence of dehydration reactions. Obtained carbon material is made of spherical micrometer-sized particles with the diameter in the 4-7 μm. The structure and surface chemical properties of obtained material were characterized by scanning electron microscopy (SEM), Fourier-transform infrared (FTIR) spectra. Investigation of surface area was determined by gravimetric McBain method where adsorption and desorption isotherms of N2 were measured on carbon material at -196 °C. Adsorption of Methylene Blue (MB) onto prepared carbon material were conducted by changing concentration of MB from 200-500 mg/dm 3 from aqueous solutions of investigated dye. Kinetic results were determined by a pseudo second-order equation.
PB  - Belgrade : Serbian Ceramic Society
C3  - Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade
T1  - Preparation and Characterization of Active Carbon Microspheres Obtained from Fructose and Adsorption Application
SP  - 81
UR  - https://hdl.handle.net/21.15107/rcub_vinar_10841
ER  - 

@conference{
author = "Krstić, Sanja S. and Dodevski, Vladimir and Čokeša, Đuro and Devečerski, Aleksandar and Vujasin, Radojka and Kumrić, Ksenija and Kaluđerović, Branka V.",
year = "2021",
abstract = "A carbon-rich solid product has been synthesized by hydrothermal treatment from fructose with phosphoric acid (H3 PO4 ) at temperature of 250°C and pH value of 0.65. The concentration of the precursor was constant, i.e. 2M of fructose in form of aqueous solution. The formation of the carbon-rich solid material through the hydrothermal carbonization of fructose is the consequence of dehydration reactions. Obtained carbon material is made of spherical micrometer-sized particles with the diameter in the 4-7 μm. The structure and surface chemical properties of obtained material were characterized by scanning electron microscopy (SEM), Fourier-transform infrared (FTIR) spectra. Investigation of surface area was determined by gravimetric McBain method where adsorption and desorption isotherms of N2 were measured on carbon material at -196 °C. Adsorption of Methylene Blue (MB) onto prepared carbon material were conducted by changing concentration of MB from 200-500 mg/dm 3 from aqueous solutions of investigated dye. Kinetic results were determined by a pseudo second-order equation.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade",
title = "Preparation and Characterization of Active Carbon Microspheres Obtained from Fructose and Adsorption Application",
pages = "81",
url = "https://hdl.handle.net/21.15107/rcub_vinar_10841"
}

Krstić, S. S., Dodevski, V., Čokeša, Đ., Devečerski, A., Vujasin, R., Kumrić, K.,& Kaluđerović, B. V.. (2021). Preparation and Characterization of Active Carbon Microspheres Obtained from Fructose and Adsorption Application. in Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade
Belgrade : Serbian Ceramic Society., 81.
https://hdl.handle.net/21.15107/rcub_vinar_10841

Krstić SS, Dodevski V, Čokeša Đ, Devečerski A, Vujasin R, Kumrić K, Kaluđerović BV. Preparation and Characterization of Active Carbon Microspheres Obtained from Fructose and Adsorption Application. in Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade. 2021;:81.
https://hdl.handle.net/21.15107/rcub_vinar_10841 .

Krstić, Sanja S., Dodevski, Vladimir, Čokeša, Đuro, Devečerski, Aleksandar, Vujasin, Radojka, Kumrić, Ksenija, Kaluđerović, Branka V., "Preparation and Characterization of Active Carbon Microspheres Obtained from Fructose and Adsorption Application" in Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade (2021):81,
https://hdl.handle.net/21.15107/rcub_vinar_10841 .

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  - CONF
AU  - Devečerski, Aleksandar
AU  - Kumrić, Ksenija
AU  - Stanković, S.
AU  - Egerić, Marija
AU  - Omerašević, Mia
AU  - Krstić, Sanja
AU  - Vujasin, Radojka
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12076
AB  - Hazardous industrial wastes are the most common source of environmental pollution. Waters originating from unregulated landfills and places of inadequate disposal of this type of wastes can pollute the water sources and affect the human health. In this study, electroplating waste sludge (ES) and various Fe-rich wastes were used as starting materials for the synthesis of inorganic pigments. Obtained black Cr1.3Fe0.7O3 pigments possess adequate properties required for use as inorganic pigments.
PB  - Society of Physical Chemists of Serbia
C3  - Physical chemistry 2021 : 15th international conference on fundamental and applied aspects of physical chemistry
T1  - Black inorganic pigments obtained from waste materials
VL  - II
SP  - 580
EP  - 583
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12076
ER  - 

@conference{
author = "Devečerski, Aleksandar and Kumrić, Ksenija and Stanković, S. and Egerić, Marija and Omerašević, Mia and Krstić, Sanja and Vujasin, Radojka",
year = "2021",
abstract = "Hazardous industrial wastes are the most common source of environmental pollution. Waters originating from unregulated landfills and places of inadequate disposal of this type of wastes can pollute the water sources and affect the human health. In this study, electroplating waste sludge (ES) and various Fe-rich wastes were used as starting materials for the synthesis of inorganic pigments. Obtained black Cr1.3Fe0.7O3 pigments possess adequate properties required for use as inorganic pigments.",
publisher = "Society of Physical Chemists of Serbia",
journal = "Physical chemistry 2021 : 15th international conference on fundamental and applied aspects of physical chemistry",
title = "Black inorganic pigments obtained from waste materials",
volume = "II",
pages = "580-583",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12076"
}

Devečerski, A., Kumrić, K., Stanković, S., Egerić, M., Omerašević, M., Krstić, S.,& Vujasin, R.. (2021). Black inorganic pigments obtained from waste materials. in Physical chemistry 2021 : 15th international conference on fundamental and applied aspects of physical chemistry
Society of Physical Chemists of Serbia., II, 580-583.
https://hdl.handle.net/21.15107/rcub_vinar_12076

Devečerski A, Kumrić K, Stanković S, Egerić M, Omerašević M, Krstić S, Vujasin R. Black inorganic pigments obtained from waste materials. in Physical chemistry 2021 : 15th international conference on fundamental and applied aspects of physical chemistry. 2021;II:580-583.
https://hdl.handle.net/21.15107/rcub_vinar_12076 .

Devečerski, Aleksandar, Kumrić, Ksenija, Stanković, S., Egerić, Marija, Omerašević, Mia, Krstić, Sanja, Vujasin, Radojka, "Black inorganic pigments obtained from waste materials" in Physical chemistry 2021 : 15th international conference on fundamental and applied aspects of physical chemistry, II (2021):580-583,
https://hdl.handle.net/21.15107/rcub_vinar_12076 .

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  - 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  - 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  - Devečerski, Aleksandar
AU  - Matović, Branko
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9965
AB  - Glassy carbon samples containing boron are produced via two different procedures. Boron was introduced into the glassy carbon precursor to avoid the commonly used high temperature doping process and also to obtain the samples of glassy carbon with boron uniformly distributed throughout the bulk of a material. Structural analysis of specimens treated under different temperature-pressure conditions shows that boron enhances the structural ordering of all samples but not to the same extent, clearly indicating that boron in different samples occupies different structural positions.
T2  - Journal of Innovative Materials in Extreme Conditions
T1  - XRD Analysis of Boron Doped Glassy Carbon
VL  - 2
IS  - 2
SP  - 11
EP  - 15
UR  - https://hdl.handle.net/21.15107/rcub_vinar_9965
ER  - 

@article{
author = "Devečerski, Aleksandar and Matović, Branko",
year = "2021",
abstract = "Glassy carbon samples containing boron are produced via two different procedures. Boron was introduced into the glassy carbon precursor to avoid the commonly used high temperature doping process and also to obtain the samples of glassy carbon with boron uniformly distributed throughout the bulk of a material. Structural analysis of specimens treated under different temperature-pressure conditions shows that boron enhances the structural ordering of all samples but not to the same extent, clearly indicating that boron in different samples occupies different structural positions.",
journal = "Journal of Innovative Materials in Extreme Conditions",
title = "XRD Analysis of Boron Doped Glassy Carbon",
volume = "2",
number = "2",
pages = "11-15",
url = "https://hdl.handle.net/21.15107/rcub_vinar_9965"
}

Devečerski, A.,& Matović, B.. (2021). XRD Analysis of Boron Doped Glassy Carbon. in Journal of Innovative Materials in Extreme Conditions, 2(2), 11-15.
https://hdl.handle.net/21.15107/rcub_vinar_9965

Devečerski A, Matović B. XRD Analysis of Boron Doped Glassy Carbon. in Journal of Innovative Materials in Extreme Conditions. 2021;2(2):11-15.
https://hdl.handle.net/21.15107/rcub_vinar_9965 .

Devečerski, Aleksandar, Matović, Branko, "XRD Analysis of Boron Doped Glassy Carbon" in Journal of Innovative Materials in Extreme Conditions, 2, no. 2 (2021):11-15,
https://hdl.handle.net/21.15107/rcub_vinar_9965 .

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  - Maksimović, Vesna
AU  - Devečerski, Aleksandar
AU  - Došen, Anja M.
AU  - Bobić, Ilija
AU  - Erić, Milić D.
AU  - Volkov-Husović, Tatjana
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1391
AB  - In the present study, an aluminum alloy A356 composite with addition of 5 wt% fly ash was synthesized and subjected to the cavitation erosion resistance test in order to find out if this material can be used in conditions where the cavitation erosion resistance is expected. Obtained results were compared with that of as-cast aluminum A356 alloy, confirming that composite possessed better cavitation erosion resistance than original alloy and that fly ash can be used as an effective reinforcement in metal matrix composites production. Scanning electron microscopy and optical microscopy was used for microstructural analysis. Phase identification of fly ash was carried out using X-ray diffraction analysis. Several methods for monitoring the cavitation erosion resistance of A356 alloy and corresponding composite were applied, such as: mass loss (Delta m), volume loss (Delta V), level of surface degradatiom (P/Po) and pit depth.
T2  - Transactions of the Indian Institute of Metals
T1  - Comparative Study on Cavitation Erosion Resistance of A356 Alloy and A356FA5 Composite
VL  - 70
IS  - 1
SP  - 97
EP  - 105
DO  - 10.1007/s12666-016-0864-1
ER  - 

@article{
author = "Maksimović, Vesna and Devečerski, Aleksandar and Došen, Anja M. and Bobić, Ilija and Erić, Milić D. and Volkov-Husović, Tatjana",
year = "2017",
abstract = "In the present study, an aluminum alloy A356 composite with addition of 5 wt% fly ash was synthesized and subjected to the cavitation erosion resistance test in order to find out if this material can be used in conditions where the cavitation erosion resistance is expected. Obtained results were compared with that of as-cast aluminum A356 alloy, confirming that composite possessed better cavitation erosion resistance than original alloy and that fly ash can be used as an effective reinforcement in metal matrix composites production. Scanning electron microscopy and optical microscopy was used for microstructural analysis. Phase identification of fly ash was carried out using X-ray diffraction analysis. Several methods for monitoring the cavitation erosion resistance of A356 alloy and corresponding composite were applied, such as: mass loss (Delta m), volume loss (Delta V), level of surface degradatiom (P/Po) and pit depth.",
journal = "Transactions of the Indian Institute of Metals",
title = "Comparative Study on Cavitation Erosion Resistance of A356 Alloy and A356FA5 Composite",
volume = "70",
number = "1",
pages = "97-105",
doi = "10.1007/s12666-016-0864-1"
}

Maksimović, V., Devečerski, A., Došen, A. M., Bobić, I., Erić, M. D.,& Volkov-Husović, T.. (2017). Comparative Study on Cavitation Erosion Resistance of A356 Alloy and A356FA5 Composite. in Transactions of the Indian Institute of Metals, 70(1), 97-105.
https://doi.org/10.1007/s12666-016-0864-1

Maksimović V, Devečerski A, Došen AM, Bobić I, Erić MD, Volkov-Husović T. Comparative Study on Cavitation Erosion Resistance of A356 Alloy and A356FA5 Composite. in Transactions of the Indian Institute of Metals. 2017;70(1):97-105.
doi:10.1007/s12666-016-0864-1 .

Maksimović, Vesna, Devečerski, Aleksandar, Došen, Anja M., Bobić, Ilija, Erić, Milić D., Volkov-Husović, Tatjana, "Comparative Study on Cavitation Erosion Resistance of A356 Alloy and A356FA5 Composite" in Transactions of the Indian Institute of Metals, 70, no. 1 (2017):97-105,
https://doi.org/10.1007/s12666-016-0864-1 . .

TY  - JOUR
AU  - Kljajević, Ljiljana M.
AU  - Šaponjić, Aleksandra
AU  - Ilić, Svetlana M.
AU  - Nenadović, Snežana S.
AU  - Kokunešoski, Maja
AU  - Egelja, Adela
AU  - Devečerski, Aleksandar
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1014
AB  - The most promising method for obtaining a large variety of non-oxide products having important technical uses is carbothermal-reduction reaction (CRR). By using this procedure, SiC and ZrC/SiC powders are obtained from diatomaceous earth and zircon powder. In this way the synthesized powders are obtained at a relatively low temperature due to good homogenization. Starting C/ZrSiO4 admixtures having different molar ratios (3:1, 4:1, 5:1 and 7:1) and C/SiO2 having ratios 1:1, 3:1, 4:1, and 7:1 were heated at temperatures between 1300 and 1600 degrees C in a controlled Ar flow atmosphere. The phase evolution was a function of the raw materials molar ratios and sintering temperature. The optimal parameters for the synthesis of SiC and ZrC/SiC powders were obtained. The results obtained by EDS analysis are in good agreement with those obtained by XRD analysis for the synthesized carbide powders. (C) 2016 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
PB  - Elsevier
T2  - Ceramics International
T1  - Fabrication of non-oxide ceramic powders by carbothermal-reduction from industrial minerals
VL  - 42
IS  - 7
SP  - 8128
EP  - 8135
DO  - 10.1016/j.ceramint.2016.02.017
ER  - 

@article{
author = "Kljajević, Ljiljana M. and Šaponjić, Aleksandra and Ilić, Svetlana M. and Nenadović, Snežana S. and Kokunešoski, Maja and Egelja, Adela and Devečerski, Aleksandar",
year = "2016",
abstract = "The most promising method for obtaining a large variety of non-oxide products having important technical uses is carbothermal-reduction reaction (CRR). By using this procedure, SiC and ZrC/SiC powders are obtained from diatomaceous earth and zircon powder. In this way the synthesized powders are obtained at a relatively low temperature due to good homogenization. Starting C/ZrSiO4 admixtures having different molar ratios (3:1, 4:1, 5:1 and 7:1) and C/SiO2 having ratios 1:1, 3:1, 4:1, and 7:1 were heated at temperatures between 1300 and 1600 degrees C in a controlled Ar flow atmosphere. The phase evolution was a function of the raw materials molar ratios and sintering temperature. The optimal parameters for the synthesis of SiC and ZrC/SiC powders were obtained. The results obtained by EDS analysis are in good agreement with those obtained by XRD analysis for the synthesized carbide powders. (C) 2016 Elsevier Ltd and Techna Group S.r.l. All rights reserved.",
publisher = "Elsevier",
journal = "Ceramics International",
title = "Fabrication of non-oxide ceramic powders by carbothermal-reduction from industrial minerals",
volume = "42",
number = "7",
pages = "8128-8135",
doi = "10.1016/j.ceramint.2016.02.017"
}

Kljajević, L. M., Šaponjić, A., Ilić, S. M., Nenadović, S. S., Kokunešoski, M., Egelja, A.,& Devečerski, A.. (2016). Fabrication of non-oxide ceramic powders by carbothermal-reduction from industrial minerals. in Ceramics International
Elsevier., 42(7), 8128-8135.
https://doi.org/10.1016/j.ceramint.2016.02.017

Kljajević LM, Šaponjić A, Ilić SM, Nenadović SS, Kokunešoski M, Egelja A, Devečerski A. Fabrication of non-oxide ceramic powders by carbothermal-reduction from industrial minerals. in Ceramics International. 2016;42(7):8128-8135.
doi:10.1016/j.ceramint.2016.02.017 .

Kljajević, Ljiljana M., Šaponjić, Aleksandra, Ilić, Svetlana M., Nenadović, Snežana S., Kokunešoski, Maja, Egelja, Adela, Devečerski, Aleksandar, "Fabrication of non-oxide ceramic powders by carbothermal-reduction from industrial minerals" in Ceramics International, 42, no. 7 (2016):8128-8135,
https://doi.org/10.1016/j.ceramint.2016.02.017 . .

TY  - JOUR
AU  - Đikanović, Daniela
AU  - Devečerski, Aleksandar
AU  - Steinbach, Gabor
AU  - Simonović, Jasna
AU  - Matović, Branko
AU  - Garab, Gyozo 
AU  - Kalauzi, Aleksandar
AU  - Radotić, Ksenija
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1007
AB  - Interactions between macromolecules in the cell walls of different plant origin were compared, namely spruce wood (Picea omorika (PaniA double dagger) PurkiAe) as an example of softwood, maple wood (Acer platanoides L.) as a hardwood and maize stems (Zea mays L.) as a herbaceous plant from the grass family and widely used agricultural plant. Interactions of macromolecules in isolated cell walls from the three species were compared by using Fourier transform infrared spectroscopy, X-ray diffraction and fluorescence spectroscopy. Linear dichroism of the cell walls was observed by using differential polarization laser scanning microscope (DP-LSM), which provides information of macromolecular order. This method has not previously been used for comparison of the cell walls of various plant origins. It was shown that the maize cell walls have higher amount of hydrogen bonds that lead to more regular packing of cellulose molecules, simpler structure of lignin, and a higher crystallinity of the cell wall in relation to the walls of woody plants. DP-LSM and fluorescence spectroscopy results indicate that maize has simpler and more ordered structure than both woody species. The results of this work provide new data for comparison of the cell wall properties that may be important for selection of appropriate plant for possible applications as a source of biomass. This may be a contribution to the development of efficient deconstruction and separation technologies that enable release of sugar and aromatic compounds from the cell wall macromolecular structure.
PB  - Springer
T2  - Wood Science and Technology
T1  - Comparison of macromolecular interactions in the cell walls of hardwood, softwood and maize by fluorescence and FTIR spectroscopy, differential polarization laser scanning microscopy and X-ray diffraction
VL  - 50
IS  - 3
SP  - 547
EP  - 566
DO  - 10.1007/s00226-015-0792-y
ER  - 

@article{
author = "Đikanović, Daniela and Devečerski, Aleksandar and Steinbach, Gabor and Simonović, Jasna and Matović, Branko and Garab, Gyozo  and Kalauzi, Aleksandar and Radotić, Ksenija",
year = "2016",
abstract = "Interactions between macromolecules in the cell walls of different plant origin were compared, namely spruce wood (Picea omorika (PaniA double dagger) PurkiAe) as an example of softwood, maple wood (Acer platanoides L.) as a hardwood and maize stems (Zea mays L.) as a herbaceous plant from the grass family and widely used agricultural plant. Interactions of macromolecules in isolated cell walls from the three species were compared by using Fourier transform infrared spectroscopy, X-ray diffraction and fluorescence spectroscopy. Linear dichroism of the cell walls was observed by using differential polarization laser scanning microscope (DP-LSM), which provides information of macromolecular order. This method has not previously been used for comparison of the cell walls of various plant origins. It was shown that the maize cell walls have higher amount of hydrogen bonds that lead to more regular packing of cellulose molecules, simpler structure of lignin, and a higher crystallinity of the cell wall in relation to the walls of woody plants. DP-LSM and fluorescence spectroscopy results indicate that maize has simpler and more ordered structure than both woody species. The results of this work provide new data for comparison of the cell wall properties that may be important for selection of appropriate plant for possible applications as a source of biomass. This may be a contribution to the development of efficient deconstruction and separation technologies that enable release of sugar and aromatic compounds from the cell wall macromolecular structure.",
publisher = "Springer",
journal = "Wood Science and Technology",
title = "Comparison of macromolecular interactions in the cell walls of hardwood, softwood and maize by fluorescence and FTIR spectroscopy, differential polarization laser scanning microscopy and X-ray diffraction",
volume = "50",
number = "3",
pages = "547-566",
doi = "10.1007/s00226-015-0792-y"
}

Đikanović, D., Devečerski, A., Steinbach, G., Simonović, J., Matović, B., Garab, G., Kalauzi, A.,& Radotić, K.. (2016). Comparison of macromolecular interactions in the cell walls of hardwood, softwood and maize by fluorescence and FTIR spectroscopy, differential polarization laser scanning microscopy and X-ray diffraction. in Wood Science and Technology
Springer., 50(3), 547-566.
https://doi.org/10.1007/s00226-015-0792-y

Đikanović D, Devečerski A, Steinbach G, Simonović J, Matović B, Garab G, Kalauzi A, Radotić K. Comparison of macromolecular interactions in the cell walls of hardwood, softwood and maize by fluorescence and FTIR spectroscopy, differential polarization laser scanning microscopy and X-ray diffraction. in Wood Science and Technology. 2016;50(3):547-566.
doi:10.1007/s00226-015-0792-y .

Đikanović, Daniela, Devečerski, Aleksandar, Steinbach, Gabor, Simonović, Jasna, Matović, Branko, Garab, Gyozo , Kalauzi, Aleksandar, Radotić, Ksenija, "Comparison of macromolecular interactions in the cell walls of hardwood, softwood and maize by fluorescence and FTIR spectroscopy, differential polarization laser scanning microscopy and X-ray diffraction" in Wood Science and Technology, 50, no. 3 (2016):547-566,
https://doi.org/10.1007/s00226-015-0792-y . .

TY  - JOUR
AU  - Pošarac-Marković, Milica B.
AU  - Veljović, Đorđe N.
AU  - Devečerski, Aleksandar
AU  - Matović, Branko
AU  - Volkov-Husović, Tatjana
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/526
AB  - A cordierite/SiC composite was created in situ with reactive sintering at 1250 degrees C and 1300 degrees C. The cordierite precursor was made from commercially available spinel, alumina and quartz and was mixed with the comercial SiC powder to obtain composite materials during the sintering. It was found that cordierite particles bind efficiently with the SiC powder during sintering and that reactive sintering is an effective way to produce ceramics at a relativly low temperature. The goal of this investigation was to check the possibilities of using the silicon carbide-cordierite composite as a material resistant to the erosive wear. The fluid dynamic system of the experimental methodology was used here to produce ultrasonic erosive wear. Two kinds of SiC/cordierite samples were investigated, KS 50 and KS 30, with different mass contents of cordierite (w = 50 % and w = 30 % of cordierite). The mass loss and the level of surface degradation were measured before and during the experiment. The level of surface degradation of the samples was monitored using the Image-Pro Plus program for the image analysis. It was found that after 150 min the mass loss was below 1.3 mg and the surface degradation was below 7 %. The obtained results indicated that both samples exhibited an excellent erosion resistance during the cavitation experiment.
T2  - Materials and Technology = Materiali in Tehnologije
T1  - Erosive Wear Resistance of Silicon Carbide-Cordierite Ceramics: Influence of the Cordierite Content
VL  - 49
IS  - 3
SP  - 365
EP  - 370
DO  - 10.17222/mit.2014.071
ER  - 

@article{
author = "Pošarac-Marković, Milica B. and Veljović, Đorđe N. and Devečerski, Aleksandar and Matović, Branko and Volkov-Husović, Tatjana",
year = "2015",
abstract = "A cordierite/SiC composite was created in situ with reactive sintering at 1250 degrees C and 1300 degrees C. The cordierite precursor was made from commercially available spinel, alumina and quartz and was mixed with the comercial SiC powder to obtain composite materials during the sintering. It was found that cordierite particles bind efficiently with the SiC powder during sintering and that reactive sintering is an effective way to produce ceramics at a relativly low temperature. The goal of this investigation was to check the possibilities of using the silicon carbide-cordierite composite as a material resistant to the erosive wear. The fluid dynamic system of the experimental methodology was used here to produce ultrasonic erosive wear. Two kinds of SiC/cordierite samples were investigated, KS 50 and KS 30, with different mass contents of cordierite (w = 50 % and w = 30 % of cordierite). The mass loss and the level of surface degradation were measured before and during the experiment. The level of surface degradation of the samples was monitored using the Image-Pro Plus program for the image analysis. It was found that after 150 min the mass loss was below 1.3 mg and the surface degradation was below 7 %. The obtained results indicated that both samples exhibited an excellent erosion resistance during the cavitation experiment.",
journal = "Materials and Technology = Materiali in Tehnologije",
title = "Erosive Wear Resistance of Silicon Carbide-Cordierite Ceramics: Influence of the Cordierite Content",
volume = "49",
number = "3",
pages = "365-370",
doi = "10.17222/mit.2014.071"
}

Pošarac-Marković, M. B., Veljović, Đ. N., Devečerski, A., Matović, B.,& Volkov-Husović, T.. (2015). Erosive Wear Resistance of Silicon Carbide-Cordierite Ceramics: Influence of the Cordierite Content. in Materials and Technology = Materiali in Tehnologije, 49(3), 365-370.
https://doi.org/10.17222/mit.2014.071

Pošarac-Marković MB, Veljović ĐN, Devečerski A, Matović B, Volkov-Husović T. Erosive Wear Resistance of Silicon Carbide-Cordierite Ceramics: Influence of the Cordierite Content. in Materials and Technology = Materiali in Tehnologije. 2015;49(3):365-370.
doi:10.17222/mit.2014.071 .

Pošarac-Marković, Milica B., Veljović, Đorđe N., Devečerski, Aleksandar, Matović, Branko, Volkov-Husović, Tatjana, "Erosive Wear Resistance of Silicon Carbide-Cordierite Ceramics: Influence of the Cordierite Content" in Materials and Technology = Materiali in Tehnologije, 49, no. 3 (2015):365-370,
https://doi.org/10.17222/mit.2014.071 . .

TY  - JOUR
AU  - Pošarac-Marković, Milica B.
AU  - Majstorović, Jelena
AU  - Devečerski, Aleksandar
AU  - Matović, Branko
AU  - Volkov-Husović, Tatjana
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/853
AB  - Porous SiC/Cordierite Composite Material with graphite content (10%) was synthesized. Evaluation of Young modulus of elasticity and thermal shock behavior of these samples was presented. Thermal shock behavior was monitored using water quench test, and non destructive methods such are UPVT and image analysis were also used for accompaniment the level of destruction of the samples during water quench test. Based on the level of destruction graphical modeling of critical number of cycles was given. This approach was implemented on discussion of the influence of the graphite content on thermal stability behavior of the samples.
T2  - Science of Sintering
T1  - Youngs Modulus Evaluation and Thermal Shock Behavior of a Porous SiC/cordierite Composite Material
VL  - 47
IS  - 3
SP  - 289
EP  - 297
DO  - 10.2298/SOS1503289P
ER  - 

@article{
author = "Pošarac-Marković, Milica B. and Majstorović, Jelena and Devečerski, Aleksandar and Matović, Branko and Volkov-Husović, Tatjana",
year = "2015",
abstract = "Porous SiC/Cordierite Composite Material with graphite content (10%) was synthesized. Evaluation of Young modulus of elasticity and thermal shock behavior of these samples was presented. Thermal shock behavior was monitored using water quench test, and non destructive methods such are UPVT and image analysis were also used for accompaniment the level of destruction of the samples during water quench test. Based on the level of destruction graphical modeling of critical number of cycles was given. This approach was implemented on discussion of the influence of the graphite content on thermal stability behavior of the samples.",
journal = "Science of Sintering",
title = "Youngs Modulus Evaluation and Thermal Shock Behavior of a Porous SiC/cordierite Composite Material",
volume = "47",
number = "3",
pages = "289-297",
doi = "10.2298/SOS1503289P"
}

Pošarac-Marković, M. B., Majstorović, J., Devečerski, A., Matović, B.,& Volkov-Husović, T.. (2015). Youngs Modulus Evaluation and Thermal Shock Behavior of a Porous SiC/cordierite Composite Material. in Science of Sintering, 47(3), 289-297.
https://doi.org/10.2298/SOS1503289P

Pošarac-Marković MB, Majstorović J, Devečerski A, Matović B, Volkov-Husović T. Youngs Modulus Evaluation and Thermal Shock Behavior of a Porous SiC/cordierite Composite Material. in Science of Sintering. 2015;47(3):289-297.
doi:10.2298/SOS1503289P .

Pošarac-Marković, Milica B., Majstorović, Jelena, Devečerski, Aleksandar, Matović, Branko, Volkov-Husović, Tatjana, "Youngs Modulus Evaluation and Thermal Shock Behavior of a Porous SiC/cordierite Composite Material" in Science of Sintering, 47, no. 3 (2015):289-297,
https://doi.org/10.2298/SOS1503289P . .

TY  - JOUR
AU  - Vidojković, Sonja M.
AU  - Onjia, Antonije E.
AU  - Devečerski, Aleksandar
AU  - Grahovac, Nebojša N.
AU  - Nastasović, Aleksandra B.
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/294
AB  - The main causes of efficiency loss in thermal power plants are boiler tube failures that diminish unit reliability and availability, and raise the cost of the electric energy. For that reason, the regular examination of boiler tubes is indispensable measure for prevention of future malfunctions of power units. The microscopic examination of economizers inner wall microstructure, the analysis of chemical composition of deposit using X-ray diffraction (XRD) and scanning electron microscopy/energy dispersive spectroscopy (SEM/EDS) have been performed in a subcritical power plant. Stress corrosion cracking, pitting corrosion, destroyed protective magnetite layer, presence of magnetite and hematite in deposit and corrosive impurities within the cracks have indicated the effect of inadequate quality of feedwater that cannot entirely ensure reliable operation of the boiler. It may be stated that maintenance of present boiler does not provide its reliable operation. The extensive chemical control of water/steam cycle was recommended.
T2  - Hemijska industrija
T1  - Economizer water-wall damages initiated by feedwater impurities
VL  - 68
IS  - 5
SP  - 559
EP  - 563
DO  - 10.2298/HEMIND130715082V
ER  - 

@article{
author = "Vidojković, Sonja M. and Onjia, Antonije E. and Devečerski, Aleksandar and Grahovac, Nebojša N. and Nastasović, Aleksandra B.",
year = "2014",
abstract = "The main causes of efficiency loss in thermal power plants are boiler tube failures that diminish unit reliability and availability, and raise the cost of the electric energy. For that reason, the regular examination of boiler tubes is indispensable measure for prevention of future malfunctions of power units. The microscopic examination of economizers inner wall microstructure, the analysis of chemical composition of deposit using X-ray diffraction (XRD) and scanning electron microscopy/energy dispersive spectroscopy (SEM/EDS) have been performed in a subcritical power plant. Stress corrosion cracking, pitting corrosion, destroyed protective magnetite layer, presence of magnetite and hematite in deposit and corrosive impurities within the cracks have indicated the effect of inadequate quality of feedwater that cannot entirely ensure reliable operation of the boiler. It may be stated that maintenance of present boiler does not provide its reliable operation. The extensive chemical control of water/steam cycle was recommended.",
journal = "Hemijska industrija",
title = "Economizer water-wall damages initiated by feedwater impurities",
volume = "68",
number = "5",
pages = "559-563",
doi = "10.2298/HEMIND130715082V"
}

Vidojković, S. M., Onjia, A. E., Devečerski, A., Grahovac, N. N.,& Nastasović, A. B.. (2014). Economizer water-wall damages initiated by feedwater impurities. in Hemijska industrija, 68(5), 559-563.
https://doi.org/10.2298/HEMIND130715082V

Vidojković SM, Onjia AE, Devečerski A, Grahovac NN, Nastasović AB. Economizer water-wall damages initiated by feedwater impurities. in Hemijska industrija. 2014;68(5):559-563.
doi:10.2298/HEMIND130715082V .

Vidojković, Sonja M., Onjia, Antonije E., Devečerski, Aleksandar, Grahovac, Nebojša N., Nastasović, Aleksandra B., "Economizer water-wall damages initiated by feedwater impurities" in Hemijska industrija, 68, no. 5 (2014):559-563,
https://doi.org/10.2298/HEMIND130715082V . .