Fixation of actinide elements into zeolites/zeotypes and Flexcrete-cement matrix

S. Amini; A. Dyer; S. Durrani

doi:10.1007/bf02043035

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Journal of Radioanalytical and Nuclear Chemistry

Volume/Issue:: Volume 173: Issue 2

Fixation of actinide elements into zeolites/zeotypes and Flexcrete-cement matrix

Authors:

S. Amini

S. Amini University of Salford Department of Chemistry and Applied Chemistry M5 4WT Salford (UK)

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A. Dyer

A. Dyer University of Salford Department of Chemistry and Applied Chemistry M5 4WT Salford (UK)

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S. Durrani

S. Durrani University of Salford Department of Chemistry and Applied Chemistry M5 4WT Salford (UK)

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Pages:: 331–337

Online Publication Date:: 13 Aug 2005

Publication Date:: 17 Oct 1993

Article Category:: Research Article

DOI:: https://doi.org/10.1007/bf02043035

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Abstract

The leaching behavior of -emitter radionuclides (uranium and americium) from zeolite-L and the zeotype (SAPO-34) in a Flexcrete-cement matrix were examined by static and dynamic methods using 0.005M CaCl₂ and synthetic ground water as leachants. The leaching rates of UO ₂²⁺ were found to be higher by about ten orders of magnitude than those of Am³⁺ for both zeolite-L and SAPO-34 in the cement matrix. The static and dynamic leaching rates of UO ₂²⁺ for SAPO-34 in CaCl₂ and synthetic ground water were ten orders of magnitude lower than those for L. SAPO-34 showed good selectivity for uranium at pH 2–3.5 and L was usefully selective for Am³⁺. Distribution coefficients of Am³⁺ and UO ₂²⁺ increased with equilibrium pH.

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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)