Identification of key factors in Accelerated Low Water Corrosion through experimental simulation of tidal conditions: Influence of stimulated indigenous microbiotaVise andre og tillknytning
2014 (engelsk)Inngår i: Biofouling (Print), ISSN 0892-7014, E-ISSN 1029-2454, Vol. 30, nr 3, s. 281-297Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]
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.
sted, utgiver, år, opplag, sider
2014. Vol. 30, nr 3, s. 281-297
Emneord [en]
16S rRNA/dsrB genes and transcripts, ALWC, bacterial communities, electrogenic SRB, MIC, simulated tidal conditions, biotic factor, corrosion, experimental study, harbor, identification key, intertidal environment, microbial community, numerical model, organic matter, seawater, steel, sulfate-reducing bacterium, Bacteria (microorganisms), sea water, aquatic species, article, biofouling, microbiology, physiology, theoretical model, water flow, Aquatic Organisms, Models, Theoretical, Water Movements
HSV kategori
Identifikatorer
URN: urn:nbn:se:ri:diva-41311DOI: 10.1080/08927014.2013.864758Scopus ID: 2-s2.0-84896731391OAI: oai:DiVA.org:ri-41311DiVA, id: diva2:1377398
Merknad
Funding details: RFSR-CT-2008-00018; Funding text 1: This work was supported by the European Union Research Fund for Coal and Steel [project number: RFSR-CT-2008-00018]. The authors gratefully thank Sandrine Païssé and Ludovic Besaury for excellent support in the performance of molecular analysis.
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