Inhibition of Consortium Sulfate Reducing Bacteria from Crude Oil for Carbon Steel Protection

Nur Akma Mahat, Norinsan Kamil Othman, Fathul Karim Sahrani, Mohd Nazri Idris

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The efficiency of cetyltrimethylammonium bromide (CTAB) to reduce the activity of consortium bacteria consisting of sulphate-reducing bacteria (C-SRB) has been investigated on variable concentration by weight loss test, potentiodynamic polarization and diffusion disk methods. C-SRB was isolated from tropical crude oil of Malaysian offshore. Biofilm analysis was also evaluated by variable pressure scanning electron microscopy (VPSEM). Weight loss and potentiodynamic polarization analyses showed that CTAB is able to inhibit the biocorrosion process and their inhibition efficiency had reached to 85 and 65% at 300 ppm CTAB, respectively. Increasing of CTAB efficiency as a function of concentration was also supported by diffusion disk analysis. Biofilm analysis showed that less of C-SRB and their metabolic by-product had been observed. It was concluded that CTAB was able to reduce the C-SRB activity and prevent biocorrosion process on carbon steel surface.

Original languageEnglish
Pages (from-to)1587-1591
Number of pages5
JournalSains Malaysiana
Volume44
Issue number11
Publication statusPublished - 1 Nov 2015

Fingerprint

Petroleum
Sulfates
Carbon steel
Bacteria
Potentiodynamic polarization
Biofilms
Byproducts
cetrimonium
Scanning electron microscopy

Keywords

  • Carbon steel
  • Consortium SRB
  • Potentiodynamic polarization

ASJC Scopus subject areas

  • General

Cite this

Inhibition of Consortium Sulfate Reducing Bacteria from Crude Oil for Carbon Steel Protection. / Mahat, Nur Akma; Othman, Norinsan Kamil; Sahrani, Fathul Karim; Idris, Mohd Nazri.

In: Sains Malaysiana, Vol. 44, No. 11, 01.11.2015, p. 1587-1591.

Research output: Contribution to journalArticle

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