TY - JOUR
T1 - Onset of microbial influenced corrosion (MIC) in stainless steel exposed to mixed species biofilms from equatorial seawater
AU - Jogdeo, Prasanna
AU - Chai, Rosalie
AU - Shuyang, Sun
AU - Saballus, Martin
AU - Constancias, Florentin
AU - Wijesinghe, Sudesh L.
AU - Thierry, Dominique
AU - Blackwood, Daniel J.
AU - McDougald, Diane
AU - Rice, Scott A.
AU - Marsili, Enrico
N1 - Funding Information:
Research supported by the Singapore National Research Foundation and Ministry of Education under the Research Centre of Excellence Programme. PJ was supported by IGS-NTU. RC is funded through a ‘Singapore Ministry of Education, Academic Research Fund Tier 1 RG141/15’. Additional support was provided by the National Research Foundation of Singapore (MSRDP-12). We thank Dr. Hongjie An for his help with AFM measurements.
Publisher Copyright:
© The Author(s) 2017.
Copyright:
Copyright 2018 Elsevier B.V., All rights reserved.
PY - 2017
Y1 - 2017
N2 - The understanding of microbial influenced corrosion (MIC) in aerobic mixed biofilms benefits from advanced microscopy and microbial ecology characterization of biofilms. Here, the onset of MIC in stainless steel coupons was studied in both natural and artificial seawater. Rapid selection of biofilm-forming microorganisms from natural seawater was observed for field experiments. Potential ennoblement was observed only in natural seawater. A seawater derived mixed microbial consortium enriched in artificial seawater was used to characterize the effect of several parameters on MIC. The concentration of organic carbon was the major determinant of MIC, while shaking speed and polishing played minor roles. The biofilm was preferentially formed at the grain boundaries. These results outline the need for MIC onset characterization with mixed microbial consortia to predict long-term corrosion behavior of stainless steel in seawater.
AB - The understanding of microbial influenced corrosion (MIC) in aerobic mixed biofilms benefits from advanced microscopy and microbial ecology characterization of biofilms. Here, the onset of MIC in stainless steel coupons was studied in both natural and artificial seawater. Rapid selection of biofilm-forming microorganisms from natural seawater was observed for field experiments. Potential ennoblement was observed only in natural seawater. A seawater derived mixed microbial consortium enriched in artificial seawater was used to characterize the effect of several parameters on MIC. The concentration of organic carbon was the major determinant of MIC, while shaking speed and polishing played minor roles. The biofilm was preferentially formed at the grain boundaries. These results outline the need for MIC onset characterization with mixed microbial consortia to predict long-term corrosion behavior of stainless steel in seawater.
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U2 - 10.1149/2.0521709jes
DO - 10.1149/2.0521709jes
M3 - Article
AN - SCOPUS:85042856197
VL - 164
SP - C532-C538
JO - Journal of the Electrochemical Society
JF - Journal of the Electrochemical Society
SN - 0013-4651
IS - 9
ER -