Coal sulphur transformations monitored by hyperthermophilic archaebacteria

T. L. Peeples, S. Hirosue, Gregory J. Olson, R. M. Kelly

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Abstract

The hyperthermophilic archaebacterium Pyrococcus furiosus can reduce polysulphidic compounds as well as elemental sulphur bound in coal. The presence of elemental sulphur in coals is thought to be a result of low temperature oxidation, or weathering, of coal pyrite. Results of controlled coal weathering experiments, in which the transformation of sulphur moieties was monitored using P. furiosus as well as standard chemical analyses, suggest that there may be changes in the organic sulphur content of coal during treatment. Observed transformations make coal sulphur more amenable to reduction by P. furiosus and, perhaps, other sulphur-reducing bacteria. Along these lines, the potential basis for combined biological and chemical treatment of coal to remove organic sulphur should be given serious consideration in developing coal cleaning technology.

Original languageEnglish (US)
Pages (from-to)599-604
Number of pages6
JournalFuel
Volume70
Issue number5
DOIs
Publication statusPublished - May 1991

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All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Fuel Technology
  • Energy Engineering and Power Technology
  • Organic Chemistry

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