Microbial diversity during biodegradation of low level radioactive waste

    Research output: Contribution to conferenceConference articleScientific


    The Gas Generation Experiment GGE is a large-scale simulation experiment that has been established in 1997 to examine gas generation from low level radioactive waste (LLW) in TVO's final disposal repository for operational LLW and ILWin Olkiluoto, Finland. The activity of microbes is related to biodegradation of organic waste, corrosion and gas generation in GGE. The aim of this study was to evaluate microbial diversity and activity in more detail using advanced molecular techniques. The molecular fingerprinting showed that microbial diversity has changed significantly during the years and varied in different locations in GGE. The highest microbial activity was evaluated in the drums containing organic waste composing mostly biodegradable cellulose-based materials. Sulphate reducers, which has been claimed to be involved in microbial corrosion were detected in all the samples.
    Original languageEnglish
    Publication statusPublished - 2014


    • geodisposal
    • low level radioactive waste
    • biodegradation
    • microbial diversity


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