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Influence of initial pH and sulfateāreducing bacteria concentration on the microbiologically influenced corrosion of buried pipeline steel.
- Source :
-
Materials & Corrosion / Werkstoffe und Korrosion . Sep2024, Vol. 75 Issue 9, p1193-1203. 11p. - Publication Year :
- 2024
-
Abstract
- Microbiologically influenced corrosion (MIC) caused by sulfateāreducing bacteria (SRB) is a major threat to buried pipelines. The crevices beneath disbonded coatings provide the environment for the survival and growth of SRB, accelerating the attachment of SRB and significantly reducing the effectiveness of buried pipelines. In this work, the influence of initial pH values (6.4, 8.0) and SRB concentrations (2.0 × 101, 4.5 × 102, 2.5 × 103 cells/mL) were investigated on the behaviors of L415 carbon steel. The results indicated that the overall uniform corrosion rate of L415 carbon steel decreased while the maximum pitting corrosion rate exhibited an increasing trend with the increasing of initial concentration of SRB. In comparison to the pH 6.4 environment, the overall risk of pitting corrosion in pH 8.0 environment was reduced due to the biomineralization of SRB, enhancing the protection of metal materials. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09475117
- Volume :
- 75
- Issue :
- 9
- Database :
- Academic Search Index
- Journal :
- Materials & Corrosion / Werkstoffe und Korrosion
- Publication Type :
- Academic Journal
- Accession number :
- 179393412
- Full Text :
- https://doi.org/10.1002/maco.202414320