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Process for producing ethanol

  • US 6,509,180 B1
  • Filed: 12/29/2000
  • Issued: 01/21/2003
  • Est. Priority Date: 03/11/1999
  • Status: Expired due to Term
First Claim
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1. A method to produce ethanol at very high yield, said method comprising:

  • (a) culturing a homoacetogens microorganism in a medium comprising a carbohydrate source to produce acetate, acetic acid or mixture thereof; and

    (b) chemically converting said acetate, acetic acid or mixtures thereof to said ethanol;

    wherein said step of chemically converting is not a fermentation; and

    wherein at least about 70% of arbon in said carbohydrate source is converted into said etaol.

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