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Vapor Hydration and Subsequent Leaching of Transuranic-Containing SRL and WV Glasses

by J. K. Bates, Argonne Natl Lab, United States,
W. L. Ebert, Argonne Natl Lab, United States,
T. J. Gerding, Argonne Natl Lab, United States,



Document Type: Proceeding Paper

Part of: High Level Radioactive Waste Management 1990

Abstract:

High-level nuclear waste glass that is subject to disposal in the proposed unsaturated environment at Yucca Mountain, Nevada, initially will be altered through contact with humid air. This alteration will occur through well established vapor phase hydration processes that will commence immediately upon closure of the glass pour canister during processing and will continue during underground storage. In the present paper, the results of parametric experiments are described where glasses were hydrated and then leached under static conditions. The purposes of the experiments were to (1) compare the leaching of hydrated glass to that of fresh glass under simplified laboratory conditions, (2) to provide a basis for performing long-term saturated and unsaturated testing of hydrated glass, and (3) to develop techniques for determining the radionuclide content of secondary phases that formed during the hydration reaction.

Subject Headings: Glass | Radioactive wastes | Hydration | Leaching | Waste treatment | Underground storage | Waste disposal | Nevada | United States

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