Cesium removal from aqueous solution by natural mineral clinoptilolite

2014
Authors
Nenadović, Snežana S.
Kljajević, Ljiljana M.

Šešlak, Bojan
Obradović, Nina

Vukanac, Ivana
Pavlović, Vladimir B.

Article (Published version)
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Show full item recordAbstract
The aim of this study was to investigate the Cs+ ions sorption on natural minerals clinoptilolite. The analysis of clinoptilolite and clinoptilolite with adsorbed Cs+ ion was con- ducted by X-ray diffraction, scanning electron microscopy, X-ray fluorescence, and gamma spectrometry. The specific activity of naturally occurring radionuclides in clinoptilolite was determined by gamma spectrometry by using the HPGe semiconductor detector. Obtained activity concentrations ranged from 49 Bq/kg to 810 Bq/kg for 40K, 5.7 Bq/kg to 10 Bq/kg for 238U, 5.8 Bq/kg to 70 Bq/kg for 232Th(228Ac), and the presence of artificial radionuclides was not detected (137Cs < 0.02 Bq/kg). The study of the thermal decomposition of raw clinoptilolite and Cs adsorbed clinoptilolite by differential thermal analysis is presented in this paper. The activation energy of the reaction phase transformation of raw clinoptilolite is 156.7 kJ/mol, while Cs adsorbed clinoptilolite is 121.7 kJ/mol. The lower value of activatio...n energy reaction of the phase transformation Cs adsorbed clinoptilolite indicates that Cs which is adsorbed destabilizes the crystal structure of clinoptilolite and thus facilitates the transition to the amorphous state. [Projekat Ministarstva nauke Republike Srbije, br. 45012]
Keywords:
clinoptilolite / adsorption / cesium / natural radioactivity / phase transformationSource:
Nuclear Technology and Radiation Protection, 2014, 29, 2, 135-141Publisher:
- Belgrade : VINČA Institute of Nuclear Sciences
Funding / projects:
DOI: 10.2298/NTRP1402135N
ISSN: 1451-3994
WoS: 000339368400007
Scopus: 2-s2.0-84905233612
Institution/Community
Институт техничких наука САНУ / Institute of Technical Sciences of SASATY - JOUR AU - Nenadović, Snežana S. AU - Kljajević, Ljiljana M. AU - Šešlak, Bojan AU - Obradović, Nina AU - Vukanac, Ivana AU - Pavlović, Vladimir B. PY - 2014 UR - https://dais.sanu.ac.rs/123456789/556 AB - The aim of this study was to investigate the Cs+ ions sorption on natural minerals clinoptilolite. The analysis of clinoptilolite and clinoptilolite with adsorbed Cs+ ion was con- ducted by X-ray diffraction, scanning electron microscopy, X-ray fluorescence, and gamma spectrometry. The specific activity of naturally occurring radionuclides in clinoptilolite was determined by gamma spectrometry by using the HPGe semiconductor detector. Obtained activity concentrations ranged from 49 Bq/kg to 810 Bq/kg for 40K, 5.7 Bq/kg to 10 Bq/kg for 238U, 5.8 Bq/kg to 70 Bq/kg for 232Th(228Ac), and the presence of artificial radionuclides was not detected (137Cs < 0.02 Bq/kg). The study of the thermal decomposition of raw clinoptilolite and Cs adsorbed clinoptilolite by differential thermal analysis is presented in this paper. The activation energy of the reaction phase transformation of raw clinoptilolite is 156.7 kJ/mol, while Cs adsorbed clinoptilolite is 121.7 kJ/mol. The lower value of activation energy reaction of the phase transformation Cs adsorbed clinoptilolite indicates that Cs which is adsorbed destabilizes the crystal structure of clinoptilolite and thus facilitates the transition to the amorphous state. [Projekat Ministarstva nauke Republike Srbije, br. 45012] PB - Belgrade : VINČA Institute of Nuclear Sciences T2 - Nuclear Technology and Radiation Protection T1 - Cesium removal from aqueous solution by natural mineral clinoptilolite SP - 135 EP - 141 VL - 29 IS - 2 DO - 10.2298/NTRP1402135N UR - https://hdl.handle.net/21.15107/rcub_dais_556 ER -
@article{ author = "Nenadović, Snežana S. and Kljajević, Ljiljana M. and Šešlak, Bojan and Obradović, Nina and Vukanac, Ivana and Pavlović, Vladimir B.", year = "2014", abstract = "The aim of this study was to investigate the Cs+ ions sorption on natural minerals clinoptilolite. The analysis of clinoptilolite and clinoptilolite with adsorbed Cs+ ion was con- ducted by X-ray diffraction, scanning electron microscopy, X-ray fluorescence, and gamma spectrometry. The specific activity of naturally occurring radionuclides in clinoptilolite was determined by gamma spectrometry by using the HPGe semiconductor detector. Obtained activity concentrations ranged from 49 Bq/kg to 810 Bq/kg for 40K, 5.7 Bq/kg to 10 Bq/kg for 238U, 5.8 Bq/kg to 70 Bq/kg for 232Th(228Ac), and the presence of artificial radionuclides was not detected (137Cs < 0.02 Bq/kg). The study of the thermal decomposition of raw clinoptilolite and Cs adsorbed clinoptilolite by differential thermal analysis is presented in this paper. The activation energy of the reaction phase transformation of raw clinoptilolite is 156.7 kJ/mol, while Cs adsorbed clinoptilolite is 121.7 kJ/mol. The lower value of activation energy reaction of the phase transformation Cs adsorbed clinoptilolite indicates that Cs which is adsorbed destabilizes the crystal structure of clinoptilolite and thus facilitates the transition to the amorphous state. [Projekat Ministarstva nauke Republike Srbije, br. 45012]", publisher = "Belgrade : VINČA Institute of Nuclear Sciences", journal = "Nuclear Technology and Radiation Protection", title = "Cesium removal from aqueous solution by natural mineral clinoptilolite", pages = "135-141", volume = "29", number = "2", doi = "10.2298/NTRP1402135N", url = "https://hdl.handle.net/21.15107/rcub_dais_556" }
Nenadović, S. S., Kljajević, L. M., Šešlak, B., Obradović, N., Vukanac, I.,& Pavlović, V. B.. (2014). Cesium removal from aqueous solution by natural mineral clinoptilolite. in Nuclear Technology and Radiation Protection Belgrade : VINČA Institute of Nuclear Sciences., 29(2), 135-141. https://doi.org/10.2298/NTRP1402135N https://hdl.handle.net/21.15107/rcub_dais_556
Nenadović SS, Kljajević LM, Šešlak B, Obradović N, Vukanac I, Pavlović VB. Cesium removal from aqueous solution by natural mineral clinoptilolite. in Nuclear Technology and Radiation Protection. 2014;29(2):135-141. doi:10.2298/NTRP1402135N https://hdl.handle.net/21.15107/rcub_dais_556 .
Nenadović, Snežana S., Kljajević, Ljiljana M., Šešlak, Bojan, Obradović, Nina, Vukanac, Ivana, Pavlović, Vladimir B., "Cesium removal from aqueous solution by natural mineral clinoptilolite" in Nuclear Technology and Radiation Protection, 29, no. 2 (2014):135-141, https://doi.org/10.2298/NTRP1402135N ., https://hdl.handle.net/21.15107/rcub_dais_556 .