Biocorrosion Behavior of AISI 1006 Carbon Steel Protected by Biofilm of Bacillus subtilis by an Iron-Oxidizing Bacterium and a Sulfate-Reducing Bacterium

Bambang Widyanto, Siti Khodijah Chaerun, Wahyu Ardi Hartomo, Intan Nurul Rizki

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

An investigation of microbiologically induced corrosion was carried out on AISI 1006 carbon steel using Acidithiobacillus ferroxidans and Citrobacter murliniae. This study was aimed to compare the resultant corrosion by the two bacteria for 7 and 21 days, either in the presence or in the absence of Bacillus subtilis as a metal corrosion inhibitor. According to the weight-loss experiment, there was no significant difference in weight loss (within the range of 4–5%). However, SEM results showed contrast corrosion surfaces occurring, uniform and pitting corrosion for those bacteria. Major damages were observed during a longer period of immersion to bacterial cultures.

Original languageEnglish
Article number6
JournalJournal of Bio- and Tribo-Corrosion
Volume6
Issue number1
DOIs
Publication statusPublished - 1 Mar 2020

Keywords

  • AISI 1006
  • Bacterial biofilm
  • Corrosion control
  • Iron-oxidizing bacteria (IOB)
  • Microbiologically induced corrosion (MIC)
  • Sulfate-reducing bacteria (SRB)

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