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Cesium removal from aqueous solution by natural mineral clinoptilolite

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2014
553.pdf (810.4Kb)
Authors
Nenadović, Snežana S.
Kljajević, Ljiljana M.
Šešlak, Bojan
Obradović, Nina
Vukanac, Ivana
Pavlović, Vladimir B.
Article (Published version)
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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 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 transformation
Source:
Nuclear Technology and Radiation Protection, 2014, 29, 2, 135-141
Publisher:
  • Belgrade : VINČA Institute of Nuclear Sciences
Funding / projects:
  • Synthesis, processing and characterization of nanostructured materials for application in the field of energy, mechanical engineering, environmental protection and biomedicine (RS-45012)

DOI: 10.2298/NTRP1402135N

ISSN: 1451-3994

WoS: 000339368400007

Scopus: 2-s2.0-84905233612
[ Google Scholar ]
Handle
https://hdl.handle.net/21.15107/rcub_dais_556
URI
https://dais.sanu.ac.rs/123456789/556
Collections
  • ИТН САНУ - Општа колекција / ITS SASA - General collection
Institution/Community
Институт техничких наука САНУ / Institute of Technical Sciences of SASA
TY  - 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 .

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