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Title: Research Program to Investigate the Fundamental Chemistry of Technetium

Abstract

Technetium (99Tc, half-life = 2.13x105 years, b-emitter) is one of the radionuclides of major concern for nuclear waste disposal. This concern is due to the long half-life of 99Tc, the ease with which pertechnetate, TcO4 -, migrates in the geosphere, and the corresponding regulatory considerations. The problem of mobility of pertechnetate in the environment is compounded by the fact that pertechnetate is the thermodynamically stable form of technetium in oxidizing environments. Because of this stability, pertechnetate was presumed to be the predominant chemical form of technetium in the aqueous phase of nuclear waste tanks. However, recent studies indicate that a significant fraction of the technetium is in a different chemical form.1,2 These factors present challenges the disposition of technetium.

Authors:
; ; ;
Publication Date:
Research Org.:
Lawrence Berkeley National Lab., Berkeley, CA; Los Alamos National Lab., Los Alamos, NM (US)
Sponsoring Org.:
USDOE Office of Environmental Management (EM) (US)
OSTI Identifier:
829922
Report Number(s):
EMSP-60296-2000
R&D Project: EMSP 60296; TRN: US0405732
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: 1 Jun 2000
Country of Publication:
United States
Language:
English
Subject:
12 MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES; 54 ENVIRONMENTAL SCIENCES; 37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; CHEMISTRY; HALF-LIFE; PERTECHNETATES; RADIOACTIVE WASTES; RADIOISOTOPES; RESEARCH PROGRAMS; STABILITY; TANKS; TECHNETIUM

Citation Formats

Edelstein, Norman M, Burns, Carol J, Shuh, David K, and Lukens, Wayne. Research Program to Investigate the Fundamental Chemistry of Technetium. United States: N. p., 2000. Web. doi:10.2172/829922.
Edelstein, Norman M, Burns, Carol J, Shuh, David K, & Lukens, Wayne. Research Program to Investigate the Fundamental Chemistry of Technetium. United States. doi:10.2172/829922.
Edelstein, Norman M, Burns, Carol J, Shuh, David K, and Lukens, Wayne. Thu . "Research Program to Investigate the Fundamental Chemistry of Technetium". United States. doi:10.2172/829922. https://www.osti.gov/servlets/purl/829922.
@article{osti_829922,
title = {Research Program to Investigate the Fundamental Chemistry of Technetium},
author = {Edelstein, Norman M and Burns, Carol J and Shuh, David K and Lukens, Wayne},
abstractNote = {Technetium (99Tc, half-life = 2.13x105 years, b-emitter) is one of the radionuclides of major concern for nuclear waste disposal. This concern is due to the long half-life of 99Tc, the ease with which pertechnetate, TcO4 -, migrates in the geosphere, and the corresponding regulatory considerations. The problem of mobility of pertechnetate in the environment is compounded by the fact that pertechnetate is the thermodynamically stable form of technetium in oxidizing environments. Because of this stability, pertechnetate was presumed to be the predominant chemical form of technetium in the aqueous phase of nuclear waste tanks. However, recent studies indicate that a significant fraction of the technetium is in a different chemical form.1,2 These factors present challenges the disposition of technetium.},
doi = {10.2172/829922},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2000},
month = {6}
}

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