Microbial communities associated with the oxidation of iron and technetium in bioreduced sediments

A. Geissler, G. T W Law, C. Boothman, K. Morris, I. T. Burke, F. R. Livens, J. R. Lloyd

    Research output: Contribution to journalArticlepeer-review

    Abstract

    Anoxic Tc(IV)-containing sediments representative of the UK Sellafield reprocessing facility were exposed to either air or NO 3 - to investigate redox cycling of technetium and iron. With air, oxidation of Fe(II) in the reduced sediments was accompanied by ~75% mobilization of Tc to solution, as soluble Tc(VII). Nitrate additions resulted in the bio-oxidation of Fe(II), coupled to microbially mediated NO 3 - reduction but was accompanied by only very limited (
    Original languageEnglish
    Pages (from-to)507-518
    Number of pages11
    JournalGeomicrobiology Journal
    Volume28
    Issue number5-6
    DOIs
    Publication statusPublished - Jun 2011

    Keywords

    • x-ray-absorption
    • nitrate-reducing bacteria
    • curved-wave theory
    • ferrous iron
    • reoxidation behavior
    • subsurface sediments
    • strain 2002
    • reduction
    • fe(ii)
    • pertechnetate

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