Journal of Radioanalytical and Nuclear Chemistry
Volume/Issue:
Volume 56: Issue 1-2
Solvent extraction of neptunium(IV) from nitric acid solutions by sulphoxides and their mixtures
Authors:
J. Shukla Radiochemistry Division, Bhabha Atomic Research Centre, Trombay, 400085 Bombay, (india)

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S. Pai Radiochemistry Division, Bhabha Atomic Research Centre, Trombay, 400085 Bombay, (india)

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M. Subramanian Radiochemistry Division, Bhabha Atomic Research Centre, Trombay, 400085 Bombay, (india)

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Pages:
53–63
Online Publication Date:
09 Jan 2007
Publication Date:
01 Mar 1980
Article Category:
Research Article
DOI:
https://doi.org/10.1007/bf02516937
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Abstract  

Studies have been performed on the liquid-liquid extraction of neptunium from nitric acid solutions by di-n-hexylsulphoxide (DHSO) di-no-octylsulphoxide (DOSO) and di-iso-amylsulphoxide (DISO) and their mixtures over a wide range of conditions. At a given strength of the extractant, extraction of Np(IV) increases initially rapidly with increase in the acid concentration; at high acidities, above 8M HNO3, the extraction decreases. Under otherwise identical conditions, extraction increases with an increase in the extractant concentration. The species extracted would appear to be Np(NO3)4·2(R2SO). A mixture of two extractants extracts more than the sum of the extractions due to the individual components at concentrations corresponding to those of the mixture. After loading the organic phase with uranium(VI), extractability of Np(IV) becomes considerably lower. The diminution in extraction with increase in temperature is small. A comparison of the extraction behaviour of Np(IV) with those of Pu(IV), U(VI) and some associated fission products has been made.

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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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