African Journal of
Microbiology Research

  • Abbreviation: Afr. J. Microbiol. Res.
  • Language: English
  • ISSN: 1996-0808
  • DOI: 10.5897/AJMR
  • Start Year: 2007
  • Published Articles: 5233

Full Length Research Paper

Biological corrosion inhibition of steel alloy by pani nano fiber

Arun A*
  • Arun A*
  • Department of Energy Science, Alagappa University, Karaikudi, Tamilnadu, India
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M. Jothibasu
  • M. Jothibasu
  • Department of Botany (DDE), Alagappa University, Karaikudi, Tamilnadu, India
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R. Vigneshwari
  • R. Vigneshwari
  • Department of Microbiology, Thiagarajar College, Madurai, Tamilnadu, India
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G. H. Dinesh
  • G. H. Dinesh
  • Department of Energy Science, Alagappa University, Karaikudi, Tamilnadu, India
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K. Mohan Rasu
  • K. Mohan Rasu
  • Department of Energy Science, Alagappa University, Karaikudi, Tamilnadu, India
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G. Siva Prakash
  • G. Siva Prakash
  • Department of Energy Science, Alagappa University, Karaikudi, Tamilnadu, India
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R. Satheesh Murugan
  • R. Satheesh Murugan
  • Department of Energy Science, Alagappa University, Karaikudi, Tamilnadu, India
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  •  Received: 21 November 2014
  •  Accepted: 13 March 2015
  •  Published: 25 March 2015

Abstract

Sulfate-reducing bacteria are recognized as a major group of microorganisms linked to anaerobic corrosion. Polyaniline is a good inhibitor for microbially influenced corrosion. The polyaniline nanofibres were prepared by interfacial polymerization method and the prepared polyaniline nanofibres were coated on steel coupons. These steel coupons were used for corrosion studies using sulphate reducing bacteria and compared with and without polyaniline nanofibre by weight loss measurements. 5th day polyaniline coated steel coupon inoculated with sulfate-reducing bacteria gave a low corrosion rate and high inhibition efficiency. The polyaniline nanofibre inhibits the corrosion level of the steel coupons induced by sulphate reducing bacteria.

Key words: Microbially influenced corrosion (MIC), sulfate reducing bacteria (SRB), polyaniline (PANI) nanofibre.

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This article is published under the terms of the Creative Commons Attribution License 4.0

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