Abstract
ABSTRACT To obtain information on the mechanism of microbiologically influenced corrosion (MIC) under anaerobic conditions, metabolic processes and microbial community dynamics were analysed for MIC of carbon steel with lake-mud microbial consortium as inoculum. During one month of MIC experiment, the microbial consortium corroded carbon steel with sulphate reduction, methane and acetate production. The bacterial and archaeal community structure in the suspension culture and the crust formed on carbon steel were compared using high-throughput Illumina MiSeq sequencing and quantitative polymerase chain reaction. The data indicated that sulphate-reducing bacterium (Desulfovibrio genus), amino acid-degrading bacterium (Aminobacterium genus) and a hydrogenotrophic methanogen Methanofollis among Archaea increased in the crust. These microbes were estimated to collaboratively induced corrosion of carbon steel under anaerobic condition.
Published Version
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