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Volume 13
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10.3390/microorganisms13071476
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Article

Microbial Corrosion Behavior of L245 Pipeline Steel in the Presence of Iron-Oxidizing Bacteria and Shewanella algae

by
Fanghui Zhu
1,
Yiyang Liu
2,
Chunsheng Wu
1,
Kai Li
1,
Yingshuai Hu
2,
Wei Liu
1,
Shuzhen Yu
1,
Mingxing Li
1,
Xiaohuan Dong
1 and
Haobo Yu
2,*
1
Oil & Gas Technology Research Institute of ChangQing Oilfield Company, Xi’an 710018, China
2
Beijing Key Laboratory of Failure, Corrosion and Protection of Oil/Gas Facility Materials, College of New Energy and Materials, China University of Petroleum-Beijing, 18 Fuxue Road, Changping, Beijing 102249, China
*
Author to whom correspondence should be addressed.
Microorganisms 2025, 13(7), 1476; https://doi.org/10.3390/microorganisms13071476
Submission received: 15 May 2025 / Revised: 17 June 2025 / Accepted: 23 June 2025 / Published: 25 June 2025
(This article belongs to the Special Issue Advances in Microbiologically Influenced Corrosion: Mechanisms, Microbial Communities, Early Detection and Control Strategies)
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Abstract

Microbiologically influenced corrosion (MIC) poses significant challenges in oilfield water injection environments, leading to substantial socioeconomic losses. L245 steel, a low-alloy steel widely used in oil and gas pipelines due to its excellent mechanical properties and cost-effectiveness, remains highly vulnerable to MIC during long-term service. This study uses surface characterization and electrochemical techniques to investigate the corrosion behavior of L245 pipeline steel under short-cycle conditions in a symbiotic environment of iron-oxidizing bacteria (IOB) and Shewanella algae (S. algae). Key findings revealed that localized corrosion of L245 steel was markedly exacerbated under coexisting IOB and S. algae conditions compared to monoculture systems. However, the uniform corrosion rate under symbiosis fell between the rates observed in the individual IOB and S. algae systems. Mechanistically, the enhanced corrosion under symbiotic conditions was attributed to the synergistic electron transfer interaction: IOB exploited electron carriers secreted by S. algae during extracellular electron transfer (EET), which amplified the microbial consortium’s capacity to harvest electrons from the steel substrate. These results emphasize the critical role of interspecies electron exchange in accelerating localized degradation of carbon steel under complex microbial consortia, with implications for developing targeted mitigation strategies in industrial pipelines exposed to similar microbiological environments.
Keywords: microbial corrosion; iron oxidizing bacteria; Shewanella algae; symbiotic corrosion microbial corrosion; iron oxidizing bacteria; Shewanella algae; symbiotic corrosion

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MDPI and ACS Style

Zhu, F.; Liu, Y.; Wu, C.; Li, K.; Hu, Y.; Liu, W.; Yu, S.; Li, M.; Dong, X.; Yu, H. Microbial Corrosion Behavior of L245 Pipeline Steel in the Presence of Iron-Oxidizing Bacteria and Shewanella algae. Microorganisms 2025, 13, 1476. https://doi.org/10.3390/microorganisms13071476

AMA Style

Zhu F, Liu Y, Wu C, Li K, Hu Y, Liu W, Yu S, Li M, Dong X, Yu H. Microbial Corrosion Behavior of L245 Pipeline Steel in the Presence of Iron-Oxidizing Bacteria and Shewanella algae. Microorganisms. 2025; 13(7):1476. https://doi.org/10.3390/microorganisms13071476

Chicago/Turabian Style

Zhu, Fanghui, Yiyang Liu, Chunsheng Wu, Kai Li, Yingshuai Hu, Wei Liu, Shuzhen Yu, Mingxing Li, Xiaohuan Dong, and Haobo Yu. 2025. "Microbial Corrosion Behavior of L245 Pipeline Steel in the Presence of Iron-Oxidizing Bacteria and Shewanella algae" Microorganisms 13, no. 7: 1476. https://doi.org/10.3390/microorganisms13071476

APA Style

Zhu, F., Liu, Y., Wu, C., Li, K., Hu, Y., Liu, W., Yu, S., Li, M., Dong, X., & Yu, H. (2025). Microbial Corrosion Behavior of L245 Pipeline Steel in the Presence of Iron-Oxidizing Bacteria and Shewanella algae. Microorganisms, 13(7), 1476. https://doi.org/10.3390/microorganisms13071476

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