Synergistic microbial interactions and electrochemical mechanisms driving microbiologically influenced corrosion in offshore platform produced seawater at 60 °C
Boxin Wei , Zheng Cai , Mengchao Niu , Jin Xu , Bokai Liao , Tangqing Wu , Changkun Yu , Cheng Sun
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Abstract
This study investigated microbiologically influenced corrosion (MIC) of steel in offshore produced seawater at 60 °C. Microbial community analysis identified Desulfomicrobium and Methanosarcinaceae as the dominant microbial genera. Corrosion analyses revealed that Desulfomicrobium reduced sulfate to H₂S, while methanogens utilized carbon dioxide to produce methane, collectively driving MIC. After 14 days, corrosion weight loss reached 0.32 ± 0.023 mm y⁻¹ , with pitting depths up to 29 µm, indicating severe pitting corrosion. The corrosion products exhibited a double-layer structure, promoting microbial colonization and ion transport. These findings highlight the pivotal role of microbial activity in accelerating steel corrosion under real-world conditions.
期刊介绍：
Corrosion occurrence and its practical control encompass a vast array of scientific knowledge. Corrosion Science endeavors to serve as the conduit for the exchange of ideas, developments, and research across all facets of this field, encompassing both metallic and non-metallic corrosion. The scope of this international journal is broad and inclusive. Published papers span from highly theoretical inquiries to essentially practical applications, covering diverse areas such as high-temperature oxidation, passivity, anodic oxidation, biochemical corrosion, stress corrosion cracking, and corrosion control mechanisms and methodologies.
This journal publishes original papers and critical reviews across the spectrum of pure and applied corrosion, material degradation, and surface science and engineering. It serves as a crucial link connecting metallurgists, materials scientists, and researchers investigating corrosion and degradation phenomena. Join us in advancing knowledge and understanding in the vital field of corrosion science.
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