Extraction behavior of uranium(VI), plutonium(IV), zirconium(IV), ruthenium(III) and europium(III) with γ-pre-irradiated solutions of N,N′-methylbutyl substituted amides in n-dodecane

P. Ruikar; M. Nagar; M. Subramanian; K. Gupta; N. Varadarajan; R. Singh

doi:10.1007/bf02163724

Journal of Radioanalytical and Nuclear Chemistry

Volume/Issue:: Volume 201: Issue 2

Extraction behavior of uranium(VI), plutonium(IV), zirconium(IV), ruthenium(III) and europium(III) with γ-pre-irradiated solutions of N,N′-methylbutyl substituted amides in n-dodecane

Authors:

P. Ruikar

P. Ruikar Bhabha Atomic Research Centre Radiochemistry Division Trombay 400 085 Bombay India

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M. Nagar

M. Nagar Bhabha Atomic Research Centre Radiochemistry Division Trombay 400 085 Bombay India

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M. Subramanian

M. Subramanian Bhabha Atomic Research Centre Radiochemistry Division Trombay 400 085 Bombay India

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K. Gupta

K. Gupta PREFRE 401 502 Tarapur India

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N. Varadarajan

N. Varadarajan PREFRE 401 502 Tarapur India

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R. Singh

R. Singh PREFRE 401 502 Tarapur India

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Pages:: 125–134

Online Publication Date:: 27 Sep 2005

Publication Date:: 17 Sep 1995

Article Category:: Research Article

DOI:: https://doi.org/10.1007/bf02163724

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Abstract

The extraction of plutonium(IV), uranium(VI), zirconium(IV), europium(III) and ruthenium(III) with -pre-irradiated n-dodecane solutions of methylbutyl substituted hexanamide (MBHA), octanamide (MBOA) and decanamide (MBDA) from 3.5M HNO₃ has been studied as a function of absorbed dose up to 184×10⁴ Gray. The distribution ratios (K_d) of uranium(VI) decreased gradually up to a dose of 50×10⁴ Gray and became almost constant thereafter, while ruthenium(III) and europium(III) were not extracted in the entire dose range studied. The K_d values of Pu(IV) decreased gradually up to 10×10⁴ Gray, for MBOA, and 30×10⁴ Gray for MBHA and MBDA and then increased up to a dose of 72×10⁴ Gray, indicating the synergistic effect of radiolytic products at higher doses. The extraction of zirconium(IV) was found to increase gradually up to 72×10⁴ Gray. However, the steep fall in K_d values of plutonium(IV), zirconium(IV) beyond a dose of 72×10⁴ Gray was atrributed to third phase formation. The radiolytic degradation of amides was monitored by quantitative IR spectroscopy and was found to follow the order MBOA>MBDA>MBHA at 184×10⁴ Gray having the amines and carboxylic acids as the main radiolytic products.

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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)