Sorption and diffusion of 90Sr2+in compacted bentonite investigated by a capillary method

D. Xu; C. L. Chen; X. K. Wang

doi:10.1007/s10967-006-0055-3

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Journal of Radioanalytical and Nuclear Chemistry

Volume/Issue:: Volume 267: Issue 2

Sorption and diffusion of ⁹⁰Sr²⁺in compacted bentonite investigated by a capillary method

Authors:

D. Xu

D. Xu Institute of Plasma Physics, Chinese Academy of Sciences P.O. Box 1126, 230031, Hefei, Anhui, P.R. China

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C. L. Chen

C. L. Chen Institute of Plasma Physics, Chinese Academy of Sciences P.O. Box 1126, 230031, Hefei, Anhui, P.R. China

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, and

X. K. Wang

X. K. Wang Institute of Plasma Physics, Chinese Academy of Sciences P.O. Box 1126, 230031, Hefei, Anhui, P.R. China

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Pages:: 357–362

Online Publication Date:: 14 Jan 2006

Publication Date:: 17 Jan 2006

Article Category:: Research Article

DOI:: https://doi.org/10.1007/s10967-006-0055-3

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Summary

The effects of bentonite density and fulvic acid on the sorption and diffusion of ⁹⁰Sr²⁺in compacted bentonite were investigated by using a capillary method. The experiments were carried out at pH 7.0±0.1 in the presence of 0.01M NaClO₄. The results suggest that the sorption and diffusion of ⁹⁰Sr²⁺in compacted bentonite decreases with increasing the density of compacted bentonite. The presence of FA enhances the sorption of Sr²⁺, but reduces the diffusion of Sr²⁺in compacted bentonite. The porosity of the compacted bentonite plays an important role in the sorption and diffusion behavior of ⁹⁰Sr²⁺. Using the calculated effective diffusion coefficients the long-term relative concentration distribution of strontium was evaluated in compacted bentonite.

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Journal of Radioanalytical and Nuclear Chemistry

Print ISSN:: 0236-5731

Online ISSN:: 1588-2780

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Journal of Radionalytical and Nuclear Chemistry
Language	English
Size	A4
Year of Foundation	1968
Volumes per Year	1
Issues per Year	12
Founder	Akadémiai Kiadó
Founder's Address	H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher	Akadémiai Kiadó Springer Nature Switzerland AG
Publisher's Address	H-1117 Budapest, Hungary 1516 Budapest, PO Box 245. CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible Publisher	Chief Executive Officer, Akadémiai Kiadó
ISSN	0236-5731 (Print)
ISSN	1588-2780 (Online)