Effects of ferrous ion concentration on microbiologically influenced corrosion of carbon steel by sulfate reducing bacterium Desulfovibrio vulgaris

Jia R., Wang D., Jin P., Unsal T., Yang D., Yang J., ...Daha Fazla

Corrosion Science, cilt.153, ss.127-137, 2019 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 153
  • Basım Tarihi: 2019
  • Doi Numarası: 10.1016/j.corsci.2019.03.038
  • Dergi Adı: Corrosion Science
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.127-137
  • Anahtar Kelimeler: Carbon steel, SEM, Weight loss, Microbiological corrosion, Pitting corrosion, DUPLEX STAINLESS-STEEL, ELECTRON-TRANSFER, HYDROGEN-SULFIDE, MICROBIAL CORROSION, SOURCE STARVATION, HIGH-TEMPERATURE, BIOCORROSION, BIOFILM, GROWTH, OIL
  • İstanbul Üniversitesi Adresli: Hayır

Özet

© 2019 Elsevier Ltd Ferrous ion (Fe 2+ )in a sulfate reducing bacteria (SRB)culture medium is known to enhance microbiologically influenced corrosion (MIC)of carbon steel, but the underlining mechanism is controversial. This work showed that it was due to better sessile cell growth that was likely attributed to Fe 2+ detoxification of H 2 S. Two hundred ppm (w/w)initial Fe 2+ in the ATCC 1249 medium achieved a 4.7 times higher Desulfovibrio vulgaris sessile cell count and 5.0 times higher C1018 carbon steel weight loss, compared to 20 ppm. Linear polarization resistance, electrochemical impedance spectroscopy and potentiodynamic polarization measurements corroborated weight loss and pitting data trends.