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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