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Microbial Iron Respiration Can Protect Steel from Corrosion
Open accessAbstract
Microbiologically influenced corrosion (MC) of steel has been attributed to the activity of biofilms that include anaerobic microorganisms such as iron-respiring bacteria, yet the mechanisms by which these organisms influence corrosion have been unclear. To study this process, we generated mutants of the iron-respiring bacterium Shewanella oneidensis strain MR-1 that were defective in biofilm formation and/or iron reduction. Electrochemical impedance spectroscopy was used to determine changes in the corrosion rate and corrosion potential as a function of time for these mutants in comparison to the wild type. Counter to prevailing theories of MC, our results indicate that biofilms comprising iron-respiring bacteria may reduce rather than accelerate the corrosion rate of steel. Corrosion inhibition appears to be due to reduction of ferric ions to ferrous ions and increased consumption of oxygen, both of which are direct consequences of microbial respiration.
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Cited by
Philips, J., Van den Driessche, N., De Paepe, K., Prévoteau, A., Gralnick, J. A., Arends, J. B. A., & Rabaey, K. (2018) · Applied and Environmental Microbiology · doi:10.1128/aem.01154-18 · Cited by 75
Metadata
- Authors
- Dubiel, M., Hsu, C. H., Chien, C. C., Mansfeld, F., & Newman, D. K.
- Venue
- Applied and Environmental Microbiology
- Publisher
- American Society for Microbiology
- Published
- 2002-03
- Volume
- 68
- Issue
- 3
- Pages
- 1440-1445
- ISSN
- 0099-2240 (ISSN-L)
- 1098-5336
- OpenAlex
- W2113802994
- Cited by
- 227
- References
- 0
- FWCI
- 5.15
- Type
- journal article
- Language
- en
- Open access
- green
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- Dubiel, M., Hsu, C. H., Chien, C. C., Mansfeld, F., & Newman, D. K. (2002). Microbial Iron Respiration Can Protect Steel from Corrosion. Applied and Environmental Microbiology. https://doi.org/10.1128/aem.68.3.1440-1445.2002
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