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

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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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