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Evaluation of effective biocides for SRB to control microbiologically influenced corrosion

✍ Scribed by V. Raman; S. Tamilselvi; N. Rajendran

Publisher
John Wiley and Sons
Year
2008
Tongue
German
Weight
237 KB
Volume
59
Category
Article
ISSN
0947-5117

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✦ Synopsis

Abstract

The effects on microbiologically induced corrosion (MIC) of mild steel resulting from the presence of corrosion products in the biofilm of sulphate‐reducing bacteria (SRB) have been investigated. The culture‐media‐containing sulphide of biogenic origin was used to find out the effect of metal‐sulphide layers developed. The SRB were isolated from the Ennore brackish water (Chennai, India). Biocides with different concentrations were used to inhibit the metabolic activity of bacteria. Open circuit potentials (OCP) followed by potentiostatic polarisation measurements were carried out for the specimens with and without the biofilm. Electrochemical impedance spectrometry (EIS) and scanning electron microscopy (SEM) were used to study the accumulation of the biofilms. The corrosion rates and the mechanism of corrosion processes were understood from the investigation.

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