The long-term stability of becquerelite

Robert Finch, Juhani Suksi, Kari Rasilainen, Rodney Ewing

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

12 Citations (Scopus)

Abstract

Uranium-series disequilibria data, in conjunction with petrographic analyses, indicate that the uranyl oxide hydrate becquerelite can persist for hundreds of thousands of years, possibly longer. Becquerelite probably forms continuously as ground water compositions permit and is resistant to U leaching by ground water. On the time scale of interest for the geologic disposal of spent UO2 nuclear fuel, becquerelite is a long-lived sink for uranium in oxidizing, U and Ca-bearing ground waters. Such long-term stability also supports recent solubility experiments that indicate natural becquerelite has a lower solubility product than that determined for synthetic becquerelites.
Original languageEnglish
Title of host publicationScientific Basis for Nuclear Waste Management XVIII
EditorsTakashi Murakami, Rodney C. Ewing
Place of PublicationPittsburgh
PublisherMaterials Research Society
Pages647-652
ISBN (Print)978-1-55899-253-5
DOIs
Publication statusPublished - 1995
MoE publication typeA4 Article in a conference publication
EventXVIII International Symposium on the Scientific Basis for Nuclear Waste Management - Kyoto, Japan
Duration: 23 Oct 199427 Oct 1994

Publication series

SeriesMaterials Research Society Symposia Proceedings
Volume353
ISSN0272-9172

Conference

ConferenceXVIII International Symposium on the Scientific Basis for Nuclear Waste Management
CountryJapan
CityKyoto
Period23/10/9427/10/94

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