New Insight into the Mitigation Strategy of Microbiologically Influenced Corrosion Caused by Anaerobic Microbial Consortium Based on Resource Conversion of Obsolete Antibiotics

In this work, the diversity of microbial consortium coming from a shale gas well was initially analyzed by 16S full length sequencing, and the primary bacteria are Arciella (53.37%), Shewanella (43.90%), and Desulfovibrio (1.95%). These bacteria can produce large amounts of H2S using sulfate as electron acceptor. Subsequently, microbiologically influenced corrosion (MIC) behavior and MIC inhibition mechanism of norfloxacin and clindamycin hydrochloride are studied. The bacteria in anaerobic microbial consortium (AMC) significantly accelerate steel corrosion, but norfloxacin and clindamycin hydrochloride both can effectively inhibit MIC at a low concentration (40mg/L) with inhibition efficiencies of 85.2% and 82.7%, respectively.