TY - JOUR
T1 - Identification of key factors in Accelerated Low Water Corrosion through experimental simulation of tidal conditions
T2 - Influence of stimulated indigenous microbiota
AU - Marty, Florence
AU - Gueuné, Hervé
AU - Malard, Emilie
AU - Sánchez-Amaya, José M.
AU - Sjögren, Lena
AU - Abbas, Ben
AU - Quillet, Laurent
AU - van Loosdrecht, Mark C.M.
AU - Muyzer, Gerard
PY - 2014/3
Y1 - 2014/3
N2 - 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.
AB - 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.
KW - 16S rRNA/dsrB genes and transcripts
KW - ALWC
KW - bacterial communities
KW - electrogenic SRB
KW - MIC
KW - simulated tidal conditions
UR - http://www.scopus.com/inward/record.url?scp=84896731391&partnerID=8YFLogxK
U2 - 10.1080/08927014.2013.864758
DO - 10.1080/08927014.2013.864758
M3 - Article
C2 - 24456308
AN - SCOPUS:84896731391
SN - 0892-7014
VL - 30
SP - 281
EP - 297
JO - Biofouling: the journal of bioadhesion and biofilm research
JF - Biofouling: the journal of bioadhesion and biofilm research
IS - 3
ER -
