Corrosion and biofouling tendency of carbon steel in anoxic groundwater containing sulphate reducing bacteria and methanogenic archaea

Pauliina Rajala (Corresponding Author), Elina Huttunen-Saarivirta, Malin Bomberg, Leena Carpén

    Research output: Contribution to journalArticleScientificpeer-review

    4 Citations (Scopus)

    Abstract

    The corrosion of carbon steel in groundwater with or without of sulphate reducing bacteria (SRB) and/or methanogenic archaea (MA) was examined in a 12-month experiment simulating a geological underground repository for nuclear waste. In the abiotic environment, cumulative corrosion rate was lowest among the studied systems, 1 μm/a. In biotic environments, the cumulative corrosion varied between 5 μm/a and 10 μm/a, being highest in SRB enriched system and lowest in SRB + MA system. However, localised corrosion was more intensive in all biotic systems. Microbial community differed between environments from betaproteobacterial taxa dominated (SRB) to Desulfovibrionales and Methanobacteriales rich in SRB + MA/MA.

    Original languageEnglish
    Article number108148
    Number of pages16
    JournalCorrosion Science
    Volume159
    Early online date12 Aug 2019
    DOIs
    Publication statusPublished - 1 Oct 2019
    MoE publication typeA1 Journal article-refereed

    Keywords

    • A. Carbon steel
    • B. EIS
    • C. Microbiological corrosion
    • SEM
    • Weight loss
    • XRD

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