Retention of Radionuclides in Halite and Anhydrite

Lars Carlsen, O. Platz

    Research output: Contribution to journalJournal articleResearch


    The interaction between a series of radionuclides, comprising **1**3**4Cs** plus , **8**5Sr**2** plus , **6**0Co**2** plus , **1**5**4Eu**3** plus , **2**4**1Am**3** plus , and **9**9Tc (as TcO//4** minus ) and halite (NaCl) and anhydrite (CaSO//4), respectively, has been investigated. It appears that europium and americium as chloro-complexes MCl//2** plus (M equals Eu, Am) interact with the halite surface apparently forming solid europium/americium chloride MCl//3) moieties, which are desorbed only with difficulty. Batch-type experiments revealed distribution coefficients in the order of 20 and 75 for europium and americium, respectively. Impuritites in the halite, such as hematite or anhydrite strongly increase the sorption efficiency. In these cases also cobalt, and to a minor extent cesium and strontium, was found to be sorbed. Anhydrite was found to sorb all metal cations studied. The sorption efficiency was found to be dependent the sodium chloride solution. Typically, the highest sorption efficiency for anhydrite was found at intermediary sodium chloride concentration levels (3-5 M).
    Original languageEnglish
    Book seriesEuropean Applied Research Reports: Nuclear Science and Technology Section
    Issue number4
    Pages (from-to)539-575
    Publication statusPublished - 1986

    Bibliographical note

    Report No. EUR-10442

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