Separation of non-pertechnetate species from Hanford AN-107 tank waste

N. C. Schroeder; K. R. Ashley

doi:10.1007/s10967-005-0625-9

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Journal of Radioanalytical and Nuclear Chemistry

Volume/Issue:: Volume 263: Issue 3

Separation of non-pertechnetate species from Hanford AN-107 tank waste

Authors:

N. C. Schroeder

N. C. Schroeder C-INC, Los Alamos National Laboratory Los Alamos, NM 87545, USA

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and

K. R. Ashley

K. R. Ashley Department of Chemistry, Texas A&M University-Commerce Commerce, TX 75429, USA

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Pages:: 567–573

Online Publication Date:: 24 Mar 2005

Publication Date:: 17 Feb 2005

Article Category:: Research Article

DOI:: https://doi.org/10.1007/s10967-005-0625-9

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Summary

A significant amount of technetium in Hanford waste exists as unidentified, stable, reduced technetium complexes. In order to facilitate the identification of these non-pertechnetate species we have developed a separation scheme which involves three major steps: (1) pretreatment of the sample with Zn²⁺, (2) cation-exchange to remove gross activity (⁹⁰Sr), and (3) size exclusion chromatography to remove residual activity and separate the technetium fractions. Addition of Zn²⁺ is used to compete for the complexants that bind strontium without perturbing the pH of the sample. Technetium recovery was ~50%. One technetium fraction was obtained free of residual gross activity.

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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)