Cesium removal from aqueous solution by natural mineral clinoptilolite
2014
Autori
Nenadović, Snežana S.Kljajević, Ljiljana M.
Seslak, Bojan Z.
Obradović, Nina
Vukanac, Ivana S.
Pavlović, Vladimir
Članak u časopisu (Objavljena verzija)
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 act...ivation 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 & Radiation Protection, 2014, 29, 2, 135-141Izdavač:
- Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd
Finansiranje / 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
Institucija/grupa
Poljoprivredni fakultetTY - JOUR AU - Nenadović, Snežana S. AU - Kljajević, Ljiljana M. AU - Seslak, Bojan Z. AU - Obradović, Nina AU - Vukanac, Ivana S. AU - Pavlović, Vladimir PY - 2014 UR - http://aspace.agrif.bg.ac.rs/handle/123456789/3426 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. PB - Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd T2 - Nuclear Technology & Radiation Protection T1 - Cesium removal from aqueous solution by natural mineral clinoptilolite EP - 141 IS - 2 SP - 135 VL - 29 DO - 10.2298/NTRP1402135N ER -
@article{ author = "Nenadović, Snežana S. and Kljajević, Ljiljana M. and Seslak, Bojan Z. and Obradović, Nina and Vukanac, Ivana S. and Pavlović, Vladimir", 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.", publisher = "Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd", journal = "Nuclear Technology & Radiation Protection", title = "Cesium removal from aqueous solution by natural mineral clinoptilolite", pages = "141-135", number = "2", volume = "29", doi = "10.2298/NTRP1402135N" }
Nenadović, S. S., Kljajević, L. M., Seslak, B. Z., Obradović, N., Vukanac, I. S.,& Pavlović, V.. (2014). Cesium removal from aqueous solution by natural mineral clinoptilolite. in Nuclear Technology & Radiation Protection Univerzitet u Beogradu - Institut za nuklearne nauke Vinča, Beograd., 29(2), 135-141. https://doi.org/10.2298/NTRP1402135N
Nenadović SS, Kljajević LM, Seslak BZ, Obradović N, Vukanac IS, Pavlović V. Cesium removal from aqueous solution by natural mineral clinoptilolite. in Nuclear Technology & Radiation Protection. 2014;29(2):135-141. doi:10.2298/NTRP1402135N .
Nenadović, Snežana S., Kljajević, Ljiljana M., Seslak, Bojan Z., Obradović, Nina, Vukanac, Ivana S., Pavlović, Vladimir, "Cesium removal from aqueous solution by natural mineral clinoptilolite" in Nuclear Technology & Radiation Protection, 29, no. 2 (2014):135-141, https://doi.org/10.2298/NTRP1402135N . .