Corrosion of Carbon Steel C1010 in the Presence of Iron Oxidizing Bacteria Acidithiobacillus Ferrooxidans
In this study, corrosion behaviors of carbon steel C1010 in the presence of an acidophilic, iron-oxidizing bacterial species Acidithiobacillus ferrooxidans were examined. Results showed that A. ferrooxidans cells, with or without attaching to C1010 steel, accelerated its corrosion at a rate of 3–6× those of acidic water, at a pH of 2, without cells. A. ferrooxidans oxidized Fe2+ to Fe3+ as an energy source and the produced Fe3+ rapidly oxidized Fe0 to Fe2+ was proposed and verified as the reason. In addition, severe pitting corrosion was found on the C1010 steel surface in solutions containing A. ferrooxidans cells.
Wang, Hua; Ju, Lu-Kwang; Castaneda-Lopez, Homero; Cheng, Gang; and Newby, Bi-min Zhang, "Corrosion of Carbon Steel C1010 in the Presence of Iron Oxidizing Bacteria Acidithiobacillus Ferrooxidans" (2014). Chemical and Biomolecular Engineering Faculty Research. 43.