The use of carbonate lixiviants to remove uranium from uranium-contaminated soils

Ch. Francis; M. Timpson; S. Lee; M. Elless; J. Wilson

doi:10.1007/bf02387292

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Journal of Radioanalytical and Nuclear Chemistry

Volume/Issue:: Volume 228: Issue 1-2

The use of carbonate lixiviants to remove uranium from uranium-contaminated soils

Authors:

Ch. Francis

Ch. Francis Oak Ridge National Laboratory Environmental Sciences Division P.O. Box 2008 37831 Oak Ridge Tennessee USA

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M. Timpson

M. Timpson Oak Ridge Institute for Science and Education Oak Ridge Tennessee USA

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S. Lee

S. Lee Oak Ridge Institute for Science and Education Oak Ridge Tennessee USA

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M. Elless

M. Elless Oak Ridge Institute for Science and Education Oak Ridge Tennessee USA

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J. Wilson

J. Wilson Oak Ridge National Laboratory Chemical Technology Division P.O. Box 2008 37831 Oak Ridge Tennessee USA

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Pages:: 15–21

Online Publication Date:: 12 Apr 2006

Publication Date:: 17 Feb 1998

Article Category:: Research Article

DOI:: https://doi.org/10.1007/bf02387292

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Abstract

The objective of this research was to design an extraction media and procedure that would selectively remove uranium without adversely affecting the soils' physicochemical characteristics or generating secondary waste forms difficult to manage or dispose of. Investigations centered around determining the best lixiviant and how the various factors such as pH, time, and temperature influenced extraction efficiency. Other factors investigated included the influence of attrition scrubbing, the effect of oxidants and reductants, and the recycling of lixiviants. Experimental data obtained at the bench-and pilot-scale levels indicated 80% to 95% of the uranium could be removed from the uranium-contaminated soils by using a carbonate lixiviant. The best treatment was three successive extractions with 0.25M carbonate-bicarbonate (in presence of KMnO₄ as an oxidant) at 40°C followed with two water rinses.

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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)