Sorption studies of Cs+, Ba2+, and Co2+ ions on bentonite using radiotracer, ToF-SIMS, and XRD techniques

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Sorption studies of Cs+, Ba2+, and Co2+ ions on bentonite using radiotracer, ToF-SIMS, and XRD techniques.pdf (184.4 KB)

Date

2001

Authors

Shahwan, T.
Erten H. N.

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Source Title

Radiochimica Acta

Print ISSN

0033-8230

Electronic ISSN

Publisher

De Gruyter Oldenbourg

Volume

89

Issue

11-12

Pages

799 - 804

Language

English

Type

Article

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Abstract

The sorption behaviour of Cs+, Ba2+, and Co2+ ions on bentonite were investigated using the radiotracer method, Time of Flight-Secondary Ion Mass Spectroscopy (ToF-SIMS), and X-Ray Diffraction (XRD). The sorption of Cs+ and Ba2+ were exothermic while sorption of Co2+ was endothermic. The sorption data were well described by Freundlich and Dubinin-Radushkevich isotherms. According to ToF-SIMS results Na+ and Mg2+ were the primary exchanging ions in bentonite. The XRD spectra showed that no structural changes were associated with the sorption of Cs+ and Co2+, and BaCO3 precipitate was formed upon the sorption of Ba2+ on bentonite.

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Keywords

Ba, Bentonite, Co, Cs, Sorption, ToF - SIMS, Barium, Cesium, Cobalt, Magnesium, Sodium, Tracer, Ion exchange, Isotherm, Mass spectrometry, Precipitation, X ray diffraction

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http://hdl.handle.net/11693/27598

Published Version (Please cite this version)

https://doi.org/10.1524/ract.2001.89.11-12.799

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Scholarly Publications - Chemistry