Electrochemical Studies of Microbiologically Influenced Corrosion on API 5L X65 by Sulfate-Reducing Bacteria in CO2 Environments

• Published in: Evergreen
• Main Author: Zulkafli R.; Othman N.K.; Yaakob N.; Sahrani F.K.; Al-Furjan M.S.H.
• Format: Article
• Language: English
• Published: Joint Journal of Novel Carbon Resource Sciences and Green Asia Strategy 2023
• Online Access: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85161824969&doi=10.5109%2f6782167&partnerID=40&md5=c66fd2a7a2c9a7e07354582a5bf0429f

The current study explores microbiologically influenced corrosion (MIC) of carbon steel API 5L X65 with and without the presence of sulfate-reducing bacteria (SRB) in CO2 environments. The Electrochemical Impedance Spectroscopy (EIS), potentiodynamic polarisation and Field Emission Scanning Electron Microscopy (FESEM) techniques were employed to analyse the carbon steel’s corrosion behaviour. The Rp values from the EIS signify lower values denoting the steel’s greater corrosion rate. FESEM micrographs found a uniform corrosion on specimens without SRB whereas a pitting corrosion on specimens with SRB. The study concludes that SRB accelerate the corrosion progression due to MIC. © 2023 Novel Carbon Resource Sciences. All rights reserved.