Muthukumar, N. and Mohanan, S. and Maruthamuthu, S. and Subramanian, P. and Palaniswamy, N. and Raghavan, M. (2003) Role of Brucella sp. and Gallionella sp. in oil degradation and corrosion. Electrochemistry Communications, 5. pp. 421-425. ISSN 1388-2481

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Abstract

Microbiologically influenced corrosion is responsible for most of the internal corrosion in oil transmission pipelines and storage tanks. In the present study, the role of bacteria on oil degradation and its influence on corrosion have been studied. Two systems (biotic and abiotic) with and without inorganic content and bacteria were employed for studying degradation and corrosion. The aerobic heterotrophic bacterial population (HB) was found to be higher in the presence of inorganic medium than its absence. The oil degradation by microbes was characterized by Fourier transform infrared spectroscopy (FTIR) and nuclear magnetic resonance (NMR). The corrosion studies were carried out by gravimetric method. It was found that Gallionella sp. degraded aliphatic protons ACH2ACH2A to AOACH2A whereas Brucella sp. converted only aromatic ring to aliphatic protons. The following inferences have been made from this study: (a) inorganic contents in contaminated water determine the oil degradation in storage tanks and transporting pipelines; (b) the degraded product may adsorb on pipeline, which would enhance the rate of microbial corrosion.

Item Type:	Article
Uncontrolled Keywords:	Bacteria; Inorganic nutrients; Diesel degradation; Corrosion; FTIR; NMR; XRD
Subjects:	Corrosion Science and Engineering
Divisions:	UNSPECIFIED
Depositing User:	ttbdar CECRI
Date Deposited:	05 Apr 2012 11:20
Last Modified:	05 Apr 2012 11:20
URI:	http://cecri.csircentral.net/id/eprint/871

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