Simultaneous extraction of palladium and technetium from nitrate solutions with tri-n-octylamine

V. Mikulaj; F. Macášek; P. Rajec

doi:10.1007/bf02519923

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Journal of Radioanalytical and Nuclear Chemistry

Volume/Issue:: Volume 51: Issue 1

Simultaneous extraction of palladium and technetium from nitrate solutions with tri-n-octylamine

Authors:

V. Mikulaj

V. Mikulaj Comenius University Department of Nuclear Chemistry 816 31 Bratislava (Czechoslovakia)

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F. Macášek

F. Macášek Comenius University Department of Nuclear Chemistry 816 31 Bratislava (Czechoslovakia)

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P. Rajec

P. Rajec Comenius University Department of Nuclear Chemistry 816 31 Bratislava (Czechoslovakia)

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Pages:: 55–62

Online Publication Date:: 09 Jan 2007

Publication Date:: 01 Mar 1979

Article Category:: Research Article

DOI:: https://doi.org/10.1007/bf02519923

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Abstract

The possibility of simultaneous extraction of palladium and technetium from nitrate solutions was investigated using tri-n-octylamine (TOA) solutions in carbon tetrachloride as a heavy, non-flammable diluent. Conditions of technetium extraction being essentially known, the main attention was focussed on the extraction of palladium which was studied in dependence on the concentration of nitric acid, salts (nitrates, chlorides, nitrites), urea and palladium. A strong decrease of Pd extraction with 10% TOA in CCl₄ has been found above a palladium concentration of 10⁻⁴M but in the presence of chlorides and nitrites a satisfactory high distribution can be preserved. Both Tc and Pd extracted with TOA/CCl₄ can be stripped into dilute ammoniacal solutions. An extraction procedure for the simultaneous isolation of Pd (80% yield) and Tc (99%) from fission product waste solutions (0.20 g Tc and 0.17 g Pd/dm³ 0.5–1.0M HNO₃) is proposed.

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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)