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ORIGINAL RESEARCH article

Front. Microbiol.
Sec. Microbiological Chemistry and Geomicrobiology
Volume 16 - 2025 | doi: 10.3389/fmicb.2025.1532151

Influence of calcium sources on the bio-mineralization behavior of Shewanella putrefaciens and induced microbiologically influenced corrosion inhibition

Provisionally accepted
Yuntian Lou Yuntian Lou 1*Hao Zhang Hao Zhang 1Weiwei Chang Weiwei Chang 1Jingzhi Yang Jingzhi Yang 1Xudong Chen Xudong Chen 2Xiangping HAO Xiangping HAO 1Hongchang Qian Hongchang Qian 1Dawei Zhang Dawei Zhang 1
  • 1 University of Science and Technology Beijing, Beijing, China
  • 2 Foshan University, Foshan, Guangdong Province, China

The final, formatted version of the article will be published soon.

    The influence of different calcium sources on the mineralization behavior of Shewanella putrefaciens and their roles in microbiologically influenced corrosion inhibition (MICI) of Q235 carbon steel were investigated. Calcium lactate, calcium nitrate, and calcium L-aspartate were evaluated as alternative calcium sources. S. putrefaciens exhibited robust growth under all conditions, with the pH of the medium exceeding 8 after 14 days of cultivation, creating favorable conditions for carbonate deposition. Under sterile conditions, all calcium sources inhibited corrosion, with calcium L-aspartate providing the most effective protection. In the presence of calcium lactate and calcium L-aspartate, S. putrefaciens formed a stable CaCO3 layer on the steel surface, significantly reducing corrosion. In contrast, calcium nitrate led to carbonate deposition but failed to produce a continuous mineralized layer, resulting in localized corrosion. These findings highlight the critical influence of calcium source selection on microbial mineralization and its effectiveness in corrosion inhibition.

    Keywords: Microbiologically influenced corrosion inhibition, Microbial bio-mineralization, Shewanella putrefaciens, Organic/inorganic calcium sources, Carbon steel

    Received: 21 Nov 2024; Accepted: 31 Jan 2025.

    Copyright: © 2025 Lou, Zhang, Chang, Yang, Chen, HAO, Qian and Zhang. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

    * Correspondence: Yuntian Lou, University of Science and Technology Beijing, Beijing, China

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