Identification of key factors in Accelerated Low Water Corrosion through experimental simulation of tidal conditions: Influence of stimulated indigenous microbiota

Florence Marty, Hervé Gueuné, Emilie Malard, José M. Sánchez-Amaya, Lena Sjögren, Ben Abbas, Laurent Quillet, Mark C.M. van Loosdrecht, Gerard Muyzer

Research output: Contribution to journalArticleScientificpeer-review

23 Citations (Scopus)

Abstract

Biotic and abiotic factors favoring Accelerated Low Water Corrosion (ALWC) on harbor steel structures remain unclear warranting their study under controlled experimental tidal conditions. Initial stimulation of marine microbial consortia by a pulse of organic matter resulted in localized corrosion and the highest corrosion rates (up to 12-times higher than non-stimulated conditions) in the low water zone, persisting after nine months exposure to natural seawater. Correlations between corrosion severity and the abundance and composition of metabolically active sulfate-reducing bacteria (SRB) indicated the importance and persistence of specific bacterial populations in accelerated corrosion. One phylotype related to the electrogenic SRB Desulfopila corrodens appeared as the major causative agent of the accelerated corrosion. The similarity of bacterial populations related to sulfur and iron cycles, mineral and tuberculation with those identified in ALWC support the relevance of experimental simulation of tidal conditions in the management of steel corrosion exposed to harbor environments.

Original languageEnglish
Pages (from-to)281-297
Number of pages17
JournalBiofouling: the journal of bioadhesion and biofilm research
Volume30
Issue number3
DOIs
Publication statusPublished - Mar 2014

Keywords

  • 16S rRNA/dsrB genes and transcripts
  • ALWC
  • bacterial communities
  • electrogenic SRB
  • MIC
  • simulated tidal conditions

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