Americium separations from nitric acid process effluent streams

M. Barr; L. Schulte; G. Jarvinen; J. Espinoza; T. Ricketts; Y. Valdez; K. Abney; R. Bartsch

doi:10.1023/a:1010613100054

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Journal of Radioanalytical and Nuclear Chemistry

Volume/Issue:: Volume 248: Issue 2

Americium separations from nitric acid process effluent streams

Authors:

M. Barr

M. Barr Los Alamos National Laboratory Nuclear Materials Technology Los Alamos NM 87545 USA

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L. Schulte

L. Schulte Los Alamos National Laboratory Nuclear Materials Technology Los Alamos NM 87545 USA

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G. Jarvinen

G. Jarvinen Los Alamos National Laboratory Nuclear Materials Technology Los Alamos NM 87545 USA

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J. Espinoza

J. Espinoza Los Alamos National Laboratory Nuclear Materials Technology Los Alamos NM 87545 USA

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T. Ricketts

T. Ricketts Los Alamos National Laboratory Nuclear Materials Technology Los Alamos NM 87545 USA

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Y. Valdez

Y. Valdez Los Alamos National Laboratory Nuclear Materials Technology Los Alamos NM 87545 USA

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K. Abney

K. Abney Los Alamos National Laboratory Chemistry Divisions Los Alamos NM 87545 USA

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R. Bartsch

R. Bartsch Texas Tech University Department of Chemistry and Biochemistry Lubbock TX 79409 USA

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Pages:: 457–465

Online Publication Date:: 29 Oct 2004

Publication Date:: 17 May 2001

Article Category:: Research Article

DOI:: https://doi.org/10.1023/a:1010613100054

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Abstract

Plutonium recovery operations offer several points at which americium removal may be attempted, and we are evaluating two classes of materials targeted at different steps in the process. Extraction chromatography resin materials loaded with three different alkylcarbamoyl phosphinates and phosphine oxides are assessed for Am removal efficiency and Am/Fe selectivity from 1–7M nitric acid solutions. Commercial and experimental anion exchange resins are evaluated for total alpha-activity removal from post-evaporator solutions whose composition, relative to the original nitric acid effluent, is reduced in acid and greatly increased in total salt content. With both classes of materials, americium and/or total-alpha reduction is sufficient to meet regulatory requirements even under sub-optimal conditions. Batch distribution coefficients and column performance data are presented.

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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)