Chemistry of Technetium and Rhenium Species during Low-Level Radioactive Waste Vitrification

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• 作者：John G. Darab and and Peter A. Smith
• 刊名：Chemistry of Materials
• 出版年：1996
• 出版时间：May 1996
• 年：1996
• 卷：8
• 期：5
• 页码：1004 - 1021
• 全文大小：358K
• 年卷期：v.8,no.5(May 1996)
• ISSN：1520-5002

文摘

We reviewed the chemistry of radioactive technetium species andtheir nonradioactiverhenium surrogates in the context of Hanford Site low-level radioactivewaste processingand vitrification. Information concerning the hydrolysis,precipitation, phase transformation,volatilization, and redox chemistries of these species during thedrying, calcining, andvitrification of aqueous waste slurries is condensed and extrapolatedfrom the literature.The similarities between the chemistry of technetium and rheniumspecies were highlightedto evaluate the performance of rhenium as a surrogate for technetium inlaboratory andengineering-scale low-level radioactive waste vitrificationexperiments.