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  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6997
AB  - Fly ash (FA) is an industrial waste material generated during coal combustion in thermal
power plants. In order to reuse this kind of industrial waste, and at the same time to reduce its
quantity, fly ash was used as a cheap material for the preparation of efficient adsorbents for the
removal of selected dyes from water. For that purpose, different modification methods were used to
obtain alkali-activated fly ash samples. The success of the modification process and characterization
of the unmodified and modified materials was monitored by Fourier transform infrared spectroscopy,
and scanning electron microscopy/energy dispersive spectroscopy. The adsorption properties of
examined 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 of
initial pH value and contact time on adsorption was examined for the adsorption of crystal violet
onto FA/geopolymer. It was found that alkaline modification improves the adsorption characteristics
of 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
EP  - 70
SP  - 66
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6997
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 thermal
power plants. In order to reuse this kind of industrial waste, and at the same time to reduce its
quantity, fly ash was used as a cheap material for the preparation of efficient adsorbents for the
removal of selected dyes from water. For that purpose, different modification methods were used to
obtain alkali-activated fly ash samples. The success of the modification process and characterization
of the unmodified and modified materials was monitored by Fourier transform infrared spectroscopy,
and scanning electron microscopy/energy dispersive spectroscopy. The adsorption properties of
examined 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 of
initial pH value and contact time on adsorption was examined for the adsorption of crystal violet
onto FA/geopolymer. It was found that alkaline modification improves the adsorption characteristics
of 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 = "70-66",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6997"
}

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_technorep_6997

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_technorep_6997 .

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_technorep_6997 .

TY  - CONF
AU  - Karić, Nataša
AU  - Živojinović, Sara
AU  - Vukčević, Marija
AU  - Maletić, Marina
AU  - Perić-Grujić, Aleksandra
AU  - Trivunac, Katarina
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6067
AB  - As coal combustion in thermal power plants generates huge amounts of waste such as bottom ash and fly ash, there is a need to find new applications for these materials. One of the ways of its reuse is chemical or thermal modification of the ash in order to obtain new materials, which can be further
used as adsorbents of various pollutants from water. The subject of this research was the alkali modification and alkali activation of fly ash in purpose to increase the adsorption capacity towards heavy metal ions. The success of modification process and characterization of the obtained materials was monitored by Fourier transform infrared spectroscopy, X-ray fluorescence spectroscopy and scanning electron microscopy. The concentration of zinc and cadmium ions after adsorption was determinated by atomic absorption spectroscopy. The kinetics of the adsorption process on the most efficient adsorbent were examined and the experimental data were compared with pseudo-first and pseudo-second order models. The achieved results show a positive effect of alkaline modification of fly ash on adsorption efficiency of both metals, while alkaline activation gives an exceptionally effective adsorbent in the case of zinc.
PB  - Faculty of Technology Banja Luka
C3  - XIV Conference of Chemists, Technologists and Environmentalists of Republic of Srpska
T1  - Effect of alkali modification on adsorption efficiency of fly ash
EP  - 236
SP  - 231
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6067
ER  - 

@conference{
author = "Karić, Nataša and Živojinović, Sara and Vukčević, Marija and Maletić, Marina and Perić-Grujić, Aleksandra and Trivunac, Katarina",
year = "2022",
abstract = "As coal combustion in thermal power plants generates huge amounts of waste such as bottom ash and fly ash, there is a need to find new applications for these materials. One of the ways of its reuse is chemical or thermal modification of the ash in order to obtain new materials, which can be further
used as adsorbents of various pollutants from water. The subject of this research was the alkali modification and alkali activation of fly ash in purpose to increase the adsorption capacity towards heavy metal ions. The success of modification process and characterization of the obtained materials was monitored by Fourier transform infrared spectroscopy, X-ray fluorescence spectroscopy and scanning electron microscopy. The concentration of zinc and cadmium ions after adsorption was determinated by atomic absorption spectroscopy. The kinetics of the adsorption process on the most efficient adsorbent were examined and the experimental data were compared with pseudo-first and pseudo-second order models. The achieved results show a positive effect of alkaline modification of fly ash on adsorption efficiency of both metals, while alkaline activation gives an exceptionally effective adsorbent in the case of zinc.",
publisher = "Faculty of Technology Banja Luka",
journal = "XIV Conference of Chemists, Technologists and Environmentalists of Republic of Srpska",
title = "Effect of alkali modification on adsorption efficiency of fly ash",
pages = "236-231",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6067"
}

Karić, N., Živojinović, S., Vukčević, M., Maletić, M., Perić-Grujić, A.,& Trivunac, K.. (2022). Effect of alkali modification on adsorption efficiency of fly ash. in XIV Conference of Chemists, Technologists and Environmentalists of Republic of Srpska
Faculty of Technology Banja Luka., 231-236.
https://hdl.handle.net/21.15107/rcub_technorep_6067

Karić N, Živojinović S, Vukčević M, Maletić M, Perić-Grujić A, Trivunac K. Effect of alkali modification on adsorption efficiency of fly ash. in XIV Conference of Chemists, Technologists and Environmentalists of Republic of Srpska. 2022;:231-236.
https://hdl.handle.net/21.15107/rcub_technorep_6067 .

Karić, Nataša, Živojinović, Sara, Vukčević, Marija, Maletić, Marina, Perić-Grujić, Aleksandra, Trivunac, Katarina, "Effect of alkali modification on adsorption efficiency of fly ash" in XIV Conference of Chemists, Technologists and Environmentalists of Republic of Srpska (2022):231-236,
https://hdl.handle.net/21.15107/rcub_technorep_6067 .

TY  - CONF
AU  - Maletić, Marina
AU  - Živojinović, Sara
AU  - Mladenović Nikolić, Nataša
AU  - Kljajević, Ljiljana
AU  - Nenadović, Snežana S.
AU  - Vukčević, Marija
AU  - Trivunac, Katarina
PY  - 2021
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6307
AB  - Metilensko plavo se često koristi u tekstilnoj, kozmetičkoj, papirnoj, kožnoj,
farmaceutskoj i prehrambenoj industriji, pri čemu kao rezultat nastaju značajne količine otpadne
vode. Prisustvo boja u vodenom ekosistemu onemogućava prolazak sunčevih zraka u dublje slojeve,
zbog čega se smanjuje fotosinteza, kvalitet vode i rastvorljivost gasova, pa dolazi do akutnog
trovanja flore i faune. Zbog toga se primenjuju različite metode za uklanjanje obojenih supstanci
pre ispuštanja u prirodne recipijente, među kojima se izdvaja adsorpcija na prirodnim
materijalima. U ovom radu ispitana je mogućnost uklanjanja katjonske boje metilensko plavo iz
vodenih rastvora adsorpcijom na modifikovanoj dijatomejskoj zemlji. Prvo je izvršena hemijska
modifikacija sa barijum-karbonatom, a zatim je dobijeni materijal termički modifikovan na
temperaturi od 900ºC pri čemu je karbonat preveden u barijum-oksid. Ovako pripremljeni
adsorbenti su korišćeni za uklanjanje metilensko plavog iz vodenog rastvora. Pokazano je da
hemijski modifikovana dijatomejska zemlja ima veći afinitet prema katjonskim bojama i da je
adsorpcija bolja u neutralnoj i baznoj sredini.
PB  - Akademija tehničkih strukovnih studija "Beograd"
C3  - Šesti naučno-stručni skup Politehnika, Zbornik radova
T1  - Određivanje efikasnosti adsorbenata na bazi modifikovane dijatomejske zemlje za adsorpciju katjonske boje metilensko plavo
EP  - 129
SP  - 124
UR  - https://hdl.handle.net/21.15107/rcub_technorep_6307
ER  - 

@conference{
author = "Maletić, Marina and Živojinović, Sara and Mladenović Nikolić, Nataša and Kljajević, Ljiljana and Nenadović, Snežana S. and Vukčević, Marija and Trivunac, Katarina",
year = "2021",
abstract = "Metilensko plavo se često koristi u tekstilnoj, kozmetičkoj, papirnoj, kožnoj,
farmaceutskoj i prehrambenoj industriji, pri čemu kao rezultat nastaju značajne količine otpadne
vode. Prisustvo boja u vodenom ekosistemu onemogućava prolazak sunčevih zraka u dublje slojeve,
zbog čega se smanjuje fotosinteza, kvalitet vode i rastvorljivost gasova, pa dolazi do akutnog
trovanja flore i faune. Zbog toga se primenjuju različite metode za uklanjanje obojenih supstanci
pre ispuštanja u prirodne recipijente, među kojima se izdvaja adsorpcija na prirodnim
materijalima. U ovom radu ispitana je mogućnost uklanjanja katjonske boje metilensko plavo iz
vodenih rastvora adsorpcijom na modifikovanoj dijatomejskoj zemlji. Prvo je izvršena hemijska
modifikacija sa barijum-karbonatom, a zatim je dobijeni materijal termički modifikovan na
temperaturi od 900ºC pri čemu je karbonat preveden u barijum-oksid. Ovako pripremljeni
adsorbenti su korišćeni za uklanjanje metilensko plavog iz vodenog rastvora. Pokazano je da
hemijski modifikovana dijatomejska zemlja ima veći afinitet prema katjonskim bojama i da je
adsorpcija bolja u neutralnoj i baznoj sredini.",
publisher = "Akademija tehničkih strukovnih studija "Beograd"",
journal = "Šesti naučno-stručni skup Politehnika, Zbornik radova",
title = "Određivanje efikasnosti adsorbenata na bazi modifikovane dijatomejske zemlje za adsorpciju katjonske boje metilensko plavo",
pages = "129-124",
url = "https://hdl.handle.net/21.15107/rcub_technorep_6307"
}

Maletić, M., Živojinović, S., Mladenović Nikolić, N., Kljajević, L., Nenadović, S. S., Vukčević, M.,& Trivunac, K.. (2021). Određivanje efikasnosti adsorbenata na bazi modifikovane dijatomejske zemlje za adsorpciju katjonske boje metilensko plavo. in Šesti naučno-stručni skup Politehnika, Zbornik radova
Akademija tehničkih strukovnih studija "Beograd"., 124-129.
https://hdl.handle.net/21.15107/rcub_technorep_6307

Maletić M, Živojinović S, Mladenović Nikolić N, Kljajević L, Nenadović SS, Vukčević M, Trivunac K. Određivanje efikasnosti adsorbenata na bazi modifikovane dijatomejske zemlje za adsorpciju katjonske boje metilensko plavo. in Šesti naučno-stručni skup Politehnika, Zbornik radova. 2021;:124-129.
https://hdl.handle.net/21.15107/rcub_technorep_6307 .

Maletić, Marina, Živojinović, Sara, Mladenović Nikolić, Nataša, Kljajević, Ljiljana, Nenadović, Snežana S., Vukčević, Marija, Trivunac, Katarina, "Određivanje efikasnosti adsorbenata na bazi modifikovane dijatomejske zemlje za adsorpciju katjonske boje metilensko plavo" in Šesti naučno-stručni skup Politehnika, Zbornik radova (2021):124-129,
https://hdl.handle.net/21.15107/rcub_technorep_6307 .