Effect of alkali modification on adsorption efficiency of fly ash
2022
Преузимање 🢃
Аутори
Karić, NatašaŽivojinović, Sara
Vukčević, Marija
Maletić, Marina
Perić-Grujić, Aleksandra
Trivunac, Katarina
Конференцијски прилог (Објављена верзија)
Метаподаци
Приказ свих података о документуАпстракт
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 ord...er 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.
Кључне речи:
fly ash / environment / modification / heavy metal / waste reuseИзвор:
XIV Conference of Chemists, Technologists and Environmentalists of Republic of Srpska, 2022, 231-236Издавач:
- Faculty of Technology Banja Luka
Финансирање / пројекти:
- SIW4SE - Serbian Industrial Waste towards Sustainable Environment: Resource of Strategic Elements and Removal Agent for Pollutants (RS-ScienceFundRS-Ideje-7743343)
Институција/група
Inovacioni centarTY - 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 .