Applied Biochemistry and Biotechnology

, Volume 39, Issue 1, pp 559–571

Biological production of ethanol from coal synthesis gas

Medium development studies
  • J. R. Phillips
  • K. T. Klasson
  • E. C. Clausen
  • J. L. Gaddy
Session 4 Bioengineering Research
  • 748 Downloads

Abstract

The anaerobic bacteriaClostridium ljungdahlii produces ethanol and acetate from CO, CO2, and H2 in synthesis gas. Early studies with the bacterium showed that relatively high concentrations of ethanol could be produced by lowering the fermentation pH and eliminating yeast extract from the medium in favor of a defined medium. This article presents the results from a medium development study based on the aerobic bacteriumEscherichia coli. The results of continuous-reactor studies in a continuously stirred tank reactor (CSTR) with and without cell recycle are shown to demonstrate the utility of this improved medium.

Index Entries

C. ljungdahlii ethanol acetate synthesis gas carbon monoxide hydrogen 

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Copyright information

© Humana Press Inc. 1993

Authors and Affiliations

  • J. R. Phillips
    • 1
  • K. T. Klasson
    • 2
  • E. C. Clausen
    • 1
  • J. L. Gaddy
    • 1
  1. 1.Department of Chemical EngineeringUniversity of ArkansasFayetteville
  2. 2.Oak Ridge National LaboratoryOak Ridge

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