Biodesulfurization of DBT in tetradecane and crude oil by a facultative thermophilic bacterium Mycobacterium goodii X7B

J Biotechnol. 2007 Jan 1;127(2):222-8. doi: 10.1016/j.jbiotec.2006.07.002. Epub 2006 Jul 8.

Abstract

Mycobacterium goodii X7B, a facultative thermophilic bacterium, cleaving the C-S bond of dibenzothiophene via a sulfur-specific pathway, was investigated for DBT in tetradecane and crude oil desulfurization. The extent of growth was improved by fed-batch culture controlled at a constant pH. The total sulfur level of dibenzothiophene in tetradecane, was reduced by 99%, from 200 to 2 ppm within 24h at 40 degrees C. After 72 h treatment, 59% of the total sulfur content in Liaoning crude oil was removed, from 3600 to 1478 ppm.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Alkanes / chemistry*
  • Alkanes / metabolism*
  • Biodegradation, Environmental
  • Biphenyl Compounds / pharmacology
  • Catalysis / drug effects
  • Chromatography, Gas
  • Fermentation / drug effects
  • Hydrocarbons / metabolism
  • Mycobacterium / drug effects
  • Mycobacterium / growth & development
  • Mycobacterium / metabolism*
  • Petroleum / metabolism*
  • Sulfur / metabolism*
  • Thiophenes / metabolism*
  • Thiophenes / pharmacology
  • Water

Substances

  • Alkanes
  • Biphenyl Compounds
  • Hydrocarbons
  • Petroleum
  • Thiophenes
  • n-tetradecane
  • Water
  • Sulfur
  • 2-phenylphenol
  • dibenzothiophene