Journal of Radioanalytical and Nuclear Chemistry
Volume/Issue:
Volume 187: Issue 2
Separation of uranium from lanthanum in molecular and ionic organic liquids
Authors:
L. Lopes University of Liège Laboratory of Analytical Chemistry and Radiochemistry, B 6 Sart Tilman B-4000 Liège Belgium

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L. Martinot University of Liège Laboratory of Analytical Chemistry and Radiochemistry, B 6 Sart Tilman B-4000 Liège Belgium

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C. Michaux University of Liège Laboratory of Analytical Chemistry and Radiochemistry, B 6 Sart Tilman B-4000 Liège Belgium

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Pages:
99–105
Online Publication Date:
27 Sep 2005
Publication Date:
17 May 1994
Article Category:
Research Article
DOI:
https://doi.org/10.1007/bf02162655
Restricted access

Abstract  

We have investigated the separation of uranium from lanthanum in two molecular organic liquids (sulfolane, TMSO2; ethylene carbonate, EC) and in one organic ionic melt: ethylammonium nitrate (EAN). A separation is achieved by chemical oxidation and precipitation of oxides in TMSO2; in this medium, the part of uranium remaining in solution may be recovered by an electrochemical reduction. In EAN, it is required to add Li2O to initiate the oxides precipitation: the separation corresponds to the difference between the solubility products of UO3(s) and La2O3(s). Best results are obtained in EC where the insoluble phase corresponds to an U/La ratio equal to 186 instead of 1.7 in the initial conditions.

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Cover Journal of Radioanalytical and Nuclear Chemistry
Journal of Radioanalytical and Nuclear Chemistry
Print ISSN:
0236-5731
Online ISSN:
1588-2780

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)

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