Separation and Recovery of Uranium and Plutonium from Oxalate Supernatant

K. Michael; G. Rizvi; J. Mathur; A. Ramanujam

doi:10.1023/a:1006743111977

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Journal of Radioanalytical and Nuclear Chemistry

Volume/Issue:: Volume 246: Issue 2

Separation and Recovery of Uranium and Plutonium from Oxalate Supernatant

Authors:

K. Michael

K. Michael Bhabha Atomic Research Centre, Trombay Process Development Division Mumbai 400 085 India

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G. Rizvi

G. Rizvi Bhabha Atomic Research Centre, Trombay Radiochemistry Division Mumbai 400 085 India

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J. Mathur

J. Mathur Bhabha Atomic Research Centre, Trombay Radiochemistry Division Mumbai 400 085 India

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A. Ramanujam

A. Ramanujam Bhabha Atomic Research Centre, Trombay Process Development Division Mumbai 400 085 India

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Pages:: 355–359

Online Publication Date:: 01 Nov 2004

Publication Date:: 17 Nov 2000

Article Category:: Research Article

DOI:: https://doi.org/10.1023/a:1006743111977

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Abstract

The separation of uranium and plutonium from oxalate supernatant, obtained after precipitating plutonium oxalate, containing ~10 g/l uranium and 30–100 mg/l plutonium in 3M HNO₃ and 0.10–0.18M oxalic acid solution has been carried out. In one extraction step with 30% TBP in dodecane: ~92% of uranium and ~7% of Pu is extracted. The raffinate containing the remaining U and Pu is extracted with 0.2M CMPO+1.2 M TBP in dodecane and near complete extraction of both the metal ions is achieved. The metal ions are back extracted from organic phases using suitable stripping agents. The recovery of both the metal ions separately is >99%. The uranium species extracted into the TBP phase from the HNO₃+oxalic acid medium was identified as UO₂(NO₃)₂·2TBP.

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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)