51312-01760-Rapid Anaerobic Degradation of Carbon Steel Exposed to Desulfoglaeba Alkanexedens

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Product Number: 51312-01760-SG

ISBN: 01760 2012 CP

Author: Recep Avci

Publication Date: 2012

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This work is a collaborative effort involving multi-disciplinary and multi-institutional scientific groups with a common objective of "to what extent the biocorrosion of carbon steel experienced in marine systems can be correlated with anaerobic fuel biodegradation". Within this context our group’s specific tasks include but not limited to understanding the effect of key microbial interactions on the biocorrosion of carbon steel: This involves developing a versatile experimental platform employing a wide range of surface imaging and surface analytical techniques that address the fundamental mechanisms of the anaerobic carbon steel biodeterioration process resulting from the anaerobic biodegradation of fuel in marine systems in the presence of sulfate and under sulfate-depleted conditions at the nano- micro- and macro-scales. To this end we have developed a bioreactor that houses smart immunosurfaces in order to correlate the locations of fuel degrading organisms (Desulfoglaeba alkanexedens) with the biodegradation/biocorrosion events at the locations of organisms at micro- or even nanoscales. We will present data revealing a very rapid degradation of carbon steel surface upon exposure to a culture of Desulfoglaeba alkanexedens (strain ALDCT) under anaerobic conditions. We will also present preliminary data on the initial degradation of the carbon steel surface near the seawater/fuel interfaces as a result of activities of ALDCT immunoimmobilized on highly polished carbon steel surfaces.