Journal of Radioanalytical and Nuclear Chemistry
Volume/Issue:
Volume 278: Issue 1
Separation studies of uranium and thorium using tetra(2-ethylhexyl) diglycolamide (TEHDGA) as an extractant
Authors:
J. Sharma Bhabha Atomic Research Centre Materials Group Mumbai 400085 India

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R. Ruhela Bhabha Atomic Research Centre Materials Group Mumbai 400085 India

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K. Harindaran Bhabha Atomic Research Centre Materials Group Mumbai 400085 India

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S. Mishra Bhabha Atomic Research Centre Materials Group Mumbai 400085 India

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S. Tangri Bhabha Atomic Research Centre Materials Group Mumbai 400085 India

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A. Suri Bhabha Atomic Research Centre Materials Group Mumbai 400085 India

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Pages:
173–177
Online Publication Date:
04 Jun 2008
Publication Date:
01 Oct 2008
Article Category:
Research Article
DOI:
https://doi.org/10.1007/s10967-007-7238-4
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Abstract  

The extraction behavior of uranium, thorium and nitric acid has been investigated for the TEHDGA/isodecyl alcohol/n-dodecane solvent system. Conditional acid uptake constant (KH) of TEHDGA/n-dodecane and the ratio of TEHDGA to nitric acid were obtained as 1.72 and 1:0.96, respectively. The extracted species of uranium and thorium in the organic phase were found to be UO2(NO3)2·2TEHDGA and Th(NO3)4·2TEHDGA. A workable separation factor (DTh/DU) of the order of 300 was observed between thorium and uranium in the nitric acid range of 0.5M to 1.5M. Similar separation factor was also achieved at higher acidity when thorium was present in large concentration compared to uranium. These results indicate that TEHDGA solvent system could be a potential candidate for separation of thorium from uranium.

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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

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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)

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