Microbial Corrosion Behavior of L245 Pipeline Steel in the Presence of Iron-Oxidizing Bacteria and <i>Shewanella algae</i>
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, remai...
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2025-06-01
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| Series: | Microorganisms |
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| author | Fanghui Zhu Yiyang Liu Chunsheng Wu Kai Li Yingshuai Hu Wei Liu Shuzhen Yu Mingxing Li Xiaohuan Dong Haobo Yu |
| author_facet | Fanghui Zhu Yiyang Liu Chunsheng Wu Kai Li Yingshuai Hu Wei Liu Shuzhen Yu Mingxing Li Xiaohuan Dong Haobo Yu |
| author_sort | Fanghui Zhu |
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| description | 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 <i>Shewanella algae</i> (<i>S. algae</i>). Key findings revealed that localized corrosion of L245 steel was markedly exacerbated under coexisting IOB and <i>S. algae</i> conditions compared to monoculture systems. However, the uniform corrosion rate under symbiosis fell between the rates observed in the individual IOB and <i>S. algae</i> systems. Mechanistically, the enhanced corrosion under symbiotic conditions was attributed to the synergistic electron transfer interaction: IOB exploited electron carriers secreted by <i>S. algae</i> 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. |
| format | Article |
| id | doaj-art-29a4dd62d2034b68bdbda0ff38f275c8 |
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| issn | 2076-2607 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | MDPI AG |
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| series | Microorganisms |
| spelling | doaj-art-29a4dd62d2034b68bdbda0ff38f275c82025-07-25T13:30:52ZengMDPI AGMicroorganisms2076-26072025-06-01137147610.3390/microorganisms13071476Microbial Corrosion Behavior of L245 Pipeline Steel in the Presence of Iron-Oxidizing Bacteria and <i>Shewanella algae</i>Fanghui Zhu0Yiyang Liu1Chunsheng Wu2Kai Li3Yingshuai Hu4Wei Liu5Shuzhen Yu6Mingxing Li7Xiaohuan Dong8Haobo Yu9Oil & Gas Technology Research Institute of ChangQing Oilfield Company, Xi’an 710018, ChinaBeijing 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, ChinaOil & Gas Technology Research Institute of ChangQing Oilfield Company, Xi’an 710018, ChinaOil & Gas Technology Research Institute of ChangQing Oilfield Company, Xi’an 710018, ChinaBeijing 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, ChinaOil & Gas Technology Research Institute of ChangQing Oilfield Company, Xi’an 710018, ChinaOil & Gas Technology Research Institute of ChangQing Oilfield Company, Xi’an 710018, ChinaOil & Gas Technology Research Institute of ChangQing Oilfield Company, Xi’an 710018, ChinaOil & Gas Technology Research Institute of ChangQing Oilfield Company, Xi’an 710018, ChinaBeijing 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, ChinaMicrobiologically 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 <i>Shewanella algae</i> (<i>S. algae</i>). Key findings revealed that localized corrosion of L245 steel was markedly exacerbated under coexisting IOB and <i>S. algae</i> conditions compared to monoculture systems. However, the uniform corrosion rate under symbiosis fell between the rates observed in the individual IOB and <i>S. algae</i> systems. Mechanistically, the enhanced corrosion under symbiotic conditions was attributed to the synergistic electron transfer interaction: IOB exploited electron carriers secreted by <i>S. algae</i> 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.https://www.mdpi.com/2076-2607/13/7/1476microbial corrosioniron oxidizing bacteria<i>Shewanella algae</i>symbiotic corrosion |
| spellingShingle | Fanghui Zhu Yiyang Liu Chunsheng Wu Kai Li Yingshuai Hu Wei Liu Shuzhen Yu Mingxing Li Xiaohuan Dong Haobo Yu Microbial Corrosion Behavior of L245 Pipeline Steel in the Presence of Iron-Oxidizing Bacteria and <i>Shewanella algae</i> Microorganisms microbial corrosion iron oxidizing bacteria <i>Shewanella algae</i> symbiotic corrosion |
| title | Microbial Corrosion Behavior of L245 Pipeline Steel in the Presence of Iron-Oxidizing Bacteria and <i>Shewanella algae</i> |
| title_full | Microbial Corrosion Behavior of L245 Pipeline Steel in the Presence of Iron-Oxidizing Bacteria and <i>Shewanella algae</i> |
| title_fullStr | Microbial Corrosion Behavior of L245 Pipeline Steel in the Presence of Iron-Oxidizing Bacteria and <i>Shewanella algae</i> |
| title_full_unstemmed | Microbial Corrosion Behavior of L245 Pipeline Steel in the Presence of Iron-Oxidizing Bacteria and <i>Shewanella algae</i> |
| title_short | Microbial Corrosion Behavior of L245 Pipeline Steel in the Presence of Iron-Oxidizing Bacteria and <i>Shewanella algae</i> |
| title_sort | microbial corrosion behavior of l245 pipeline steel in the presence of iron oxidizing bacteria and i shewanella algae i |
| topic | microbial corrosion iron oxidizing bacteria <i>Shewanella algae</i> symbiotic corrosion |
| url | https://www.mdpi.com/2076-2607/13/7/1476 |
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