Cesium Removal from Aqueous Solution By Natural Mineral Clinoptilolite
2014
Autori
Nenadović, Snežana S.Kljajević, Ljiljana M.
Šešlak, Bojan Ž.
Obradović, Nina
Vukanac, Ivana
Pavlović, Vladimir B.
Članak u časopisu
Metapodaci
Prikaz svih podataka o dokumentuApstrakt
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 conducted 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 K-40, 5.7 Bq/kg to 10 Bq/kg for U-238, 5.8 Bq/kg to 70 Bq/kg for Th-232(Ac-228), and the presence of artificial radionuclides was not detected (Cs-137 LT 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 activ...ation 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.
Ključne reči:
clinoptilolite / Adsorption / cesium / natural radioactivity / phase transformation / differential thermal analysisIzvor:
Nuclear technology and radiation protection, 2014, 29, 2, 135-141Finansiranje / projekti:
- Sinteza, procesiranje i karakterizacija nanostrukturnih materijala za primenu u oblasti energije, mehaničkog inženjerstva, zaštite životne stredine i biomedicine (RS-MESTD-Integrated and Interdisciplinary Research (IIR or III)-45012)
DOI: 10.2298/NTRP1402135N
ISSN: 1451-3994
WoS: 000339368400007
Scopus: 2-s2.0-84905233612
Kolekcije
Institucija/grupa
VinčaTY - JOUR AU - Nenadović, Snežana S. AU - Kljajević, Ljiljana M. AU - Šešlak, Bojan Ž. AU - Obradović, Nina AU - Vukanac, Ivana AU - Pavlović, Vladimir B. PY - 2014 UR - https://vinar.vin.bg.ac.rs/handle/123456789/5451 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 conducted 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 K-40, 5.7 Bq/kg to 10 Bq/kg for U-238, 5.8 Bq/kg to 70 Bq/kg for Th-232(Ac-228), and the presence of artificial radionuclides was not detected (Cs-137 LT 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. T2 - Nuclear technology and radiation protection T1 - Cesium Removal from Aqueous Solution By Natural Mineral Clinoptilolite VL - 29 IS - 2 SP - 135 EP - 141 DO - 10.2298/NTRP1402135N ER -
@article{ author = "Nenadović, Snežana S. and Kljajević, Ljiljana M. and Šešlak, Bojan Ž. 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 conducted 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 K-40, 5.7 Bq/kg to 10 Bq/kg for U-238, 5.8 Bq/kg to 70 Bq/kg for Th-232(Ac-228), and the presence of artificial radionuclides was not detected (Cs-137 LT 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.", journal = "Nuclear technology and radiation protection", title = "Cesium Removal from Aqueous Solution By Natural Mineral Clinoptilolite", volume = "29", number = "2", pages = "135-141", doi = "10.2298/NTRP1402135N" }
Nenadović, S. S., Kljajević, L. M., Šešlak, B. Ž., Obradović, N., Vukanac, I.,& Pavlović, V. B.. (2014). Cesium Removal from Aqueous Solution By Natural Mineral Clinoptilolite. in Nuclear technology and radiation protection, 29(2), 135-141. https://doi.org/10.2298/NTRP1402135N
Nenadović SS, Kljajević LM, Šešlak BŽ, 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 .
Nenadović, Snežana S., Kljajević, Ljiljana M., Šešlak, Bojan Ž., 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 . .