Electrochemical Impedance Spectroscopy and Surface Studies of Steel Corrosion by Sulphate-Reducing Bacteria

Fathul Karim Sahrani, Zaharah Ibrahim, Madzlan A A Aziz, Adibah Yahya

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Sulphate-reducing bacteria (SRB), implicated in microbiologically influenced corrosion were isolated from the deep subsurface at the vicinity of Pasir Gudang, Johor, Malaysia. Electrochemical impedance spectroscopic (EIS) study was carried out to determine the polarization resistance in various types ofculturing solutions, with SRB1, SRB2, combination of SRB1 and SRB2 and without SRBs inoculated (control). EIS results showed that in the presence of SRB1, SRB2 and mixed culture SRB1 and SRB2, polarisation resistance values were 7170, 6370 and 7190 ohms respectively compared to that of control, 92400 ohm. X-ray analysis (EDS) of the specimens indicated high sulphur content in the medium containing SRBs. Localized corrosion was observed on the metal surface which was associated with the SRB activity.

Original languageEnglish
Pages (from-to)359-364
Number of pages6
JournalSains Malaysiana
Volume38
Issue number3
Publication statusPublished - Jun 2009

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Steel corrosion
Electrochemical impedance spectroscopy
Sulfates
Bacteria
Polarization
Corrosion
X ray analysis
Sulfur
Energy dispersive spectroscopy
Metals

Keywords

  • Electrochemical impedance spectroscopy
  • Microbiologically influenced corrosion
  • Sulphate-reducing bacteria

ASJC Scopus subject areas

  • General

Cite this

Electrochemical Impedance Spectroscopy and Surface Studies of Steel Corrosion by Sulphate-Reducing Bacteria. / Sahrani, Fathul Karim; Ibrahim, Zaharah; Aziz, Madzlan A A; Yahya, Adibah.

In: Sains Malaysiana, Vol. 38, No. 3, 06.2009, p. 359-364.

Research output: Contribution to journalArticle

Sahrani, Fathul Karim ; Ibrahim, Zaharah ; Aziz, Madzlan A A ; Yahya, Adibah. / Electrochemical Impedance Spectroscopy and Surface Studies of Steel Corrosion by Sulphate-Reducing Bacteria. In: Sains Malaysiana. 2009 ; Vol. 38, No. 3. pp. 359-364.
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