The role of localized acidity generation in microbially influenced corrosion

From National Research Council Canada

Alternative titleLocalized acidity generation as a crux of microbially influenced corrosion
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DOIResolve DOI: http://doi.org/10.1007/s00284-017-1254-6
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  1. National Research Council Canada. Aquatic and Crop Resource Development
TypeArticle
Journal titleCurrent Microbiology
ISSN0343-8651
1432-0991
Volume74
Issue4
Pages870–876
Subjectbiocorrosion; pH; blofilm; sulfate reducing bacteria; nitrate reducing bacteria; methanogen
Abstract
Microbially influenced corrosion is of great industrial concern. Microbial coupling of metal oxidation to sulfate-, nitrate-, nitrite-, or CO2-reduction is proton-mediated, and some sulfate-reducing prokaryotes are capable of regulating extracellular pH. The analysis of the corrosive processes catalyzed by nitrate reducing bacteria and methanogenic archaea indicates that these microorganisms may be capable of regulating extracellular pH as well. It is proposed that nutrient limitation at metal-biofilm interfaces may induce activation of enzymatic proton-producing/proton-secreting functions in respiratory and methanogenic microorganisms to make them capable of using Fe0 as the electron donor. This can be further verified through experiments involving measurements of ion and gas concentrations at metal-biofilm interfaces, microscopy, and transcriptomics analyses.
Publication date
PublisherSpringer
LanguageEnglish
Peer reviewedYes
NRC numberNRC-ACRD-56228
NPARC number23001929
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Record identifier7b3526db-0453-4ed6-bb3b-fcfff0a315b6
Record created2017-06-02
Record modified2017-06-02
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