Biological corrosion inhibition of steel alloy by pani nano fiber

Abstract

Sulfate-reducing bacteria are recognized as a major group of microorganisms linked to anaerobic corrosion. Polyaniline is a good inhibitor for microbially influenced corr rosion. The polyaniline nanofibres were prepared by interfacial polymerization method and the prepared polyaniline nanofib res were coated on steel coupons. These steel coupons were used for corrosion studies using sulphate reducing th bacteria and compared with and without polyaniline nanofibre by weight loss measurement s. 5 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.