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International Journal of Corrosion
Volume 2016, Article ID 4308487, 4 pages
http://dx.doi.org/10.1155/2016/4308487
Research Article

Microbiologically Influenced Corrosion of Carbon Steel Exposed to Biodiesel

1Department of Science and Humanities, Faculty of Engineering, Avinashilingam Institute for Home Science and Higher Education for Women, Coimbatore 641 043, India
2Department of Chemistry, Avinashilingam Institute for Home Science and Higher Education for Women, Coimbatore 641 043, India

Received 31 August 2016; Revised 6 November 2016; Accepted 24 November 2016

Academic Editor: Michael J. Schütze

Copyright © 2016 S. Malarvizhi and Shyamala R. Krishnamurthy. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Environmental concerns over worsening air pollution problems caused by emissions from vehicles and depletion of fossil fuels have forced us to seek fuels such as biodiesel which can supplement petrofuels. Biodiesels have the ability to retain water and provide a conducive environment for microbiologically influenced corrosion (MIC) which may cause difficulties during transportation, storage, and their use. This paper analyses the influence of bacteria on the corrosivity of biodiesel obtained from Jatropha curcas on carbon steel using mass loss method. Carbon steel showed the highest corrosion rates in B100 (100% biodiesel) both in the presence and in absence of bacteria. The surface analysis of the metal was carried out using SEM.