TY  - CONF
AU  - Karić, Nataša
AU  - Maletić, Marina
AU  - Živojinović, Sara
AU  - Vukčević, Marija
AU  - Milošević, Milena
AU  - Trivunac, Katarina
AU  - Perić Grujić, Aleksandra
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7340
AB  - Fly ash (FA) is an industrial waste material generated during coal combustion in thermalpower plants. In order to reuse this kind of industrial waste, and at the same time to reduce itsquantity, fly ash was used as a cheap material for the preparation of efficient adsorbents for theremoval of selected dyes from water. For that purpose, different modification methods were used toobtain alkali-activated fly ash samples. The success of the modification process and characterizationof the unmodified and modified materials was monitored by Fourier transform infrared spectroscopy,and scanning electron microscopy/energy dispersive spectroscopy. The adsorption properties ofexamined samples were studied through the adsorption of methylene blue, crystal violet, alizarin red,and methyl orange. All samples showed the highest adsorption efficiency for crystal violet removal,while the sample modified with a combination of NaOH, Na2SiO3, and diatomaceous earth(FA/geopolymer) was the most efficient adsorbent for all selected dyes. Therefore, the influence ofinitial pH value and contact time on adsorption was examined for the adsorption of crystal violetonto FA/geopolymer. It was found that alkaline modification improves the adsorption characteristicsof fly ash making it a promising candidate to solve the problem of colored wastewater.
PB  - Belgrade : The Academy of Applied Technical Studies "Belgrade"
C3  - Conference Proceedings / International Scientific and Professional Conference Politehnika 2023, Belgrade, 15th December 2023
T1  - Alkali modification of fly ash for adsorption of selected dyes
SP  - 66
EP  - 70
UR  - https://hdl.handle.net/21.15107/rcub_cer_7340
ER  - 

@conference{
author = "Karić, Nataša and Maletić, Marina and Živojinović, Sara and Vukčević, Marija and Milošević, Milena and Trivunac, Katarina and Perić Grujić, Aleksandra",
year = "2023",
abstract = "Fly ash (FA) is an industrial waste material generated during coal combustion in thermalpower plants. In order to reuse this kind of industrial waste, and at the same time to reduce itsquantity, fly ash was used as a cheap material for the preparation of efficient adsorbents for theremoval of selected dyes from water. For that purpose, different modification methods were used toobtain alkali-activated fly ash samples. The success of the modification process and characterizationof the unmodified and modified materials was monitored by Fourier transform infrared spectroscopy,and scanning electron microscopy/energy dispersive spectroscopy. The adsorption properties ofexamined samples were studied through the adsorption of methylene blue, crystal violet, alizarin red,and methyl orange. All samples showed the highest adsorption efficiency for crystal violet removal,while the sample modified with a combination of NaOH, Na2SiO3, and diatomaceous earth(FA/geopolymer) was the most efficient adsorbent for all selected dyes. Therefore, the influence ofinitial pH value and contact time on adsorption was examined for the adsorption of crystal violetonto FA/geopolymer. It was found that alkaline modification improves the adsorption characteristicsof fly ash making it a promising candidate to solve the problem of colored wastewater.",
publisher = "Belgrade : The Academy of Applied Technical Studies "Belgrade"",
journal = "Conference Proceedings / International Scientific and Professional Conference Politehnika 2023, Belgrade, 15th December 2023",
title = "Alkali modification of fly ash for adsorption of selected dyes",
pages = "66-70",
url = "https://hdl.handle.net/21.15107/rcub_cer_7340"
}

Karić, N., Maletić, M., Živojinović, S., Vukčević, M., Milošević, M., Trivunac, K.,& Perić Grujić, A.. (2023). Alkali modification of fly ash for adsorption of selected dyes. in Conference Proceedings / International Scientific and Professional Conference Politehnika 2023, Belgrade, 15th December 2023
Belgrade : The Academy of Applied Technical Studies "Belgrade"., 66-70.
https://hdl.handle.net/21.15107/rcub_cer_7340

Karić N, Maletić M, Živojinović S, Vukčević M, Milošević M, Trivunac K, Perić Grujić A. Alkali modification of fly ash for adsorption of selected dyes. in Conference Proceedings / International Scientific and Professional Conference Politehnika 2023, Belgrade, 15th December 2023. 2023;:66-70.
https://hdl.handle.net/21.15107/rcub_cer_7340 .

Karić, Nataša, Maletić, Marina, Živojinović, Sara, Vukčević, Marija, Milošević, Milena, Trivunac, Katarina, Perić Grujić, Aleksandra, "Alkali modification of fly ash for adsorption of selected dyes" in Conference Proceedings / International Scientific and Professional Conference Politehnika 2023, Belgrade, 15th December 2023 (2023):66-70,
https://hdl.handle.net/21.15107/rcub_cer_7340 .

TY  - CONF
AU  - Maletić, Marina
AU  - Žižović, Sara
AU  - Vukčević, Marija
AU  - Milošević, Milena
AU  - Karić, Nataša
AU  - Trivunac, Katarina
AU  - Perić-Grujić, Aleksandra
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7337
AB  - U cilju iskorišćenja industrijskog otpada, leteći pepeo je modifikovan radi dobijanjaefikasnih adsorbenata za uklanjanje metilensko plavog iz vode. Leteći pepeo je aktiviran uprisustvu NaOH na 550oC, i modifikovan različitim količinama polietilenimina.Karakterizacija polaznog i modifikovanih uzoraka izvršena je skenirajućom elektronskommikroskopijom i infracrvenom spektroskopijom sa Furijeovom transformacijom. Ispitan jeuticaj vremena kontakta i početne koncentracije adsorbata na adsorpcione kapacitetenemodifikovanog i modifikovanog letećeg pepela. Pokazano je da adsorpcionekarakteristike zavise od količine dodatog polietilenimina, kao i da adsorpcija prati brzinupseudo-drugog reda, a ravnotežni adsorpcioni podaci pokazuju bolje slaganje sa Frojndlihovom izotermom.
AB  - In attempt to reuse industrial waste, fly ash was modified and converted into efficientadsorbent for the removal of methylene blue from water. Fly ash was activated in thepresence of NaOH at 550oC, and modified with different amounts of polyethyleneimine.The raw and modified samples were characterized by scanning electron microscopy andFourier transform infrared spectroscopy. The influence of contact time and initialadsorbate concentration on the adsorption capacity of unmodified and modified fly ash wasalso examined. It has been shown that the adsorption characteristics depend on the amountof polyethyleneimine added, that the adsorption follows a pseudo-second-order rate, andthe equilibrium adsorption data show better agreement with the Freundlich isotherm.
PB  - Beograd : Srpsko hemijsko društvo
C3  - Kratki izvodi radova, knjiga radova - 59. Savetovanje Srpskog hemijskog društva, 1. i 2. jun 2023. godine, Novi Sad / Book of Abstracts, Proceedings - 59th Meeting of the Serbian Chemical Society, June 1-2, 2023, Novi Sad, Serbia
T1  - Alkalno aktivirani leteći pepeo modifikovan polietileniminom kao adsorbent za uklanjanje metilensko plavog iz vode
T1  - Alkali-activated fly ash modified with polyethyleneimine as adsorbent for methylene blue removal from water
SP  - 126
EP  - 126
UR  - https://hdl.handle.net/21.15107/rcub_cer_7337
ER  - 

@conference{
author = "Maletić, Marina and Žižović, Sara and Vukčević, Marija and Milošević, Milena and Karić, Nataša and Trivunac, Katarina and Perić-Grujić, Aleksandra",
year = "2023",
abstract = "U cilju iskorišćenja industrijskog otpada, leteći pepeo je modifikovan radi dobijanjaefikasnih adsorbenata za uklanjanje metilensko plavog iz vode. Leteći pepeo je aktiviran uprisustvu NaOH na 550oC, i modifikovan različitim količinama polietilenimina.Karakterizacija polaznog i modifikovanih uzoraka izvršena je skenirajućom elektronskommikroskopijom i infracrvenom spektroskopijom sa Furijeovom transformacijom. Ispitan jeuticaj vremena kontakta i početne koncentracije adsorbata na adsorpcione kapacitetenemodifikovanog i modifikovanog letećeg pepela. Pokazano je da adsorpcionekarakteristike zavise od količine dodatog polietilenimina, kao i da adsorpcija prati brzinupseudo-drugog reda, a ravnotežni adsorpcioni podaci pokazuju bolje slaganje sa Frojndlihovom izotermom., In attempt to reuse industrial waste, fly ash was modified and converted into efficientadsorbent for the removal of methylene blue from water. Fly ash was activated in thepresence of NaOH at 550oC, and modified with different amounts of polyethyleneimine.The raw and modified samples were characterized by scanning electron microscopy andFourier transform infrared spectroscopy. The influence of contact time and initialadsorbate concentration on the adsorption capacity of unmodified and modified fly ash wasalso examined. It has been shown that the adsorption characteristics depend on the amountof polyethyleneimine added, that the adsorption follows a pseudo-second-order rate, andthe equilibrium adsorption data show better agreement with the Freundlich isotherm.",
publisher = "Beograd : Srpsko hemijsko društvo",
journal = "Kratki izvodi radova, knjiga radova - 59. Savetovanje Srpskog hemijskog društva, 1. i 2. jun 2023. godine, Novi Sad / Book of Abstracts, Proceedings - 59th Meeting of the Serbian Chemical Society, June 1-2, 2023, Novi Sad, Serbia",
title = "Alkalno aktivirani leteći pepeo modifikovan polietileniminom kao adsorbent za uklanjanje metilensko plavog iz vode, Alkali-activated fly ash modified with polyethyleneimine as adsorbent for methylene blue removal from water",
pages = "126-126",
url = "https://hdl.handle.net/21.15107/rcub_cer_7337"
}

Maletić, M., Žižović, S., Vukčević, M., Milošević, M., Karić, N., Trivunac, K.,& Perić-Grujić, A.. (2023). Alkalno aktivirani leteći pepeo modifikovan polietileniminom kao adsorbent za uklanjanje metilensko plavog iz vode. in Kratki izvodi radova, knjiga radova - 59. Savetovanje Srpskog hemijskog društva, 1. i 2. jun 2023. godine, Novi Sad / Book of Abstracts, Proceedings - 59th Meeting of the Serbian Chemical Society, June 1-2, 2023, Novi Sad, Serbia
Beograd : Srpsko hemijsko društvo., 126-126.
https://hdl.handle.net/21.15107/rcub_cer_7337

Maletić M, Žižović S, Vukčević M, Milošević M, Karić N, Trivunac K, Perić-Grujić A. Alkalno aktivirani leteći pepeo modifikovan polietileniminom kao adsorbent za uklanjanje metilensko plavog iz vode. in Kratki izvodi radova, knjiga radova - 59. Savetovanje Srpskog hemijskog društva, 1. i 2. jun 2023. godine, Novi Sad / Book of Abstracts, Proceedings - 59th Meeting of the Serbian Chemical Society, June 1-2, 2023, Novi Sad, Serbia. 2023;:126-126.
https://hdl.handle.net/21.15107/rcub_cer_7337 .

Maletić, Marina, Žižović, Sara, Vukčević, Marija, Milošević, Milena, Karić, Nataša, Trivunac, Katarina, Perić-Grujić, Aleksandra, "Alkalno aktivirani leteći pepeo modifikovan polietileniminom kao adsorbent za uklanjanje metilensko plavog iz vode" in Kratki izvodi radova, knjiga radova - 59. Savetovanje Srpskog hemijskog društva, 1. i 2. jun 2023. godine, Novi Sad / Book of Abstracts, Proceedings - 59th Meeting of the Serbian Chemical Society, June 1-2, 2023, Novi Sad, Serbia (2023):126-126,
https://hdl.handle.net/21.15107/rcub_cer_7337 .

TY  - JOUR
AU  - Mijailović, Daniel M.
AU  - Vukčević, Marija M.
AU  - Stević, Zoran
AU  - Kalijadis, Ana M.
AU  - Stojanovic, Dusica B.
AU  - Panić, Vladimir
AU  - Uskoković, Petar S.
PY  - 2017
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/2268
AB  - Activated carbons with high specific surface area (even above 2000 m(2) g(-1)) and pronounced microporosity are prepared in two-stage process involving conventional carbonization of waste hemp fibers and subsequent activation by potassium hydroxide. Samples with considerably different surface and intrinsic micro-and mesoporous properties are obtained at different carbonization and activation conditions. The improvements of the capacitive properties are found upon increase in carbonization temperature, since it considerably influenced the specific surface area and the content of surface oxygen groups. Cyclic voltammetry experiments reveal the dependence of specific capacitance on the sweep rate due to the characteristic porous structure of the samples. The highest measured value in 1 M H2SO4 solution is 122 F g(-1). The electrochemical impedance data indicates eight-branch transmission line equivalent electric behavior of activated carbons.
PB  - Pennington : Electrochemical Society Inc.
T2  - Journal of the Electrochemical Society
T1  - Supercapacitive Performances of Activated Highly Microporous Natural Carbon Macrofibers
VL  - 164
IS  - 6
DO  - 10.1149/2.0581706jes
ER  - 

@article{
author = "Mijailović, Daniel M. and Vukčević, Marija M. and Stević, Zoran and Kalijadis, Ana M. and Stojanovic, Dusica B. and Panić, Vladimir and Uskoković, Petar S.",
year = "2017",
abstract = "Activated carbons with high specific surface area (even above 2000 m(2) g(-1)) and pronounced microporosity are prepared in two-stage process involving conventional carbonization of waste hemp fibers and subsequent activation by potassium hydroxide. Samples with considerably different surface and intrinsic micro-and mesoporous properties are obtained at different carbonization and activation conditions. The improvements of the capacitive properties are found upon increase in carbonization temperature, since it considerably influenced the specific surface area and the content of surface oxygen groups. Cyclic voltammetry experiments reveal the dependence of specific capacitance on the sweep rate due to the characteristic porous structure of the samples. The highest measured value in 1 M H2SO4 solution is 122 F g(-1). The electrochemical impedance data indicates eight-branch transmission line equivalent electric behavior of activated carbons.",
publisher = "Pennington : Electrochemical Society Inc.",
journal = "Journal of the Electrochemical Society",
title = "Supercapacitive Performances of Activated Highly Microporous Natural Carbon Macrofibers",
volume = "164",
number = "6",
doi = "10.1149/2.0581706jes"
}

Mijailović, D. M., Vukčević, M. M., Stević, Z., Kalijadis, A. M., Stojanovic, D. B., Panić, V.,& Uskoković, P. S.. (2017). Supercapacitive Performances of Activated Highly Microporous Natural Carbon Macrofibers. in Journal of the Electrochemical Society
Pennington : Electrochemical Society Inc.., 164(6).
https://doi.org/10.1149/2.0581706jes

Mijailović DM, Vukčević MM, Stević Z, Kalijadis AM, Stojanovic DB, Panić V, Uskoković PS. Supercapacitive Performances of Activated Highly Microporous Natural Carbon Macrofibers. in Journal of the Electrochemical Society. 2017;164(6).
doi:10.1149/2.0581706jes .

Mijailović, Daniel M., Vukčević, Marija M., Stević, Zoran, Kalijadis, Ana M., Stojanovic, Dusica B., Panić, Vladimir, Uskoković, Petar S., "Supercapacitive Performances of Activated Highly Microporous Natural Carbon Macrofibers" in Journal of the Electrochemical Society, 164, no. 6 (2017),
https://doi.org/10.1149/2.0581706jes . .