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Title: Clostridium stain which produces acetic acid from waste gases

A method and apparatus for converting waste gases from industrial processes such as oil refining, carbon black, coke, ammonia, and methanol production, into useful products. The method includes introducing the waste gases into a bioreactor where they are fermented to various organic acids or alcohols by anaerobic bacteria within the bioreactor. These valuable end products are then recovered, separated and purified. In an exemplary recovery process, the bioreactor raffinate is passed through an extraction chamber into which one or more non-inhibitory solvents are simultaneously introduced to extract the product. Then, the product is separated from the solvent by distillation. Gas conversion rates can be maximized by use of centrifuges, hollow fiber membranes, or other means of ultrafiltration to return entrained anaerobic bacteria from the bioreactor raffinate to the bioreactor itself, thus insuring the highest possible cell concentration.
Authors:
 [1]
  1. (2207 Tall Oaks Dr., Fayetteville, AR 72703)
Publication Date:
OSTI Identifier:
870784
Report Number(s):
US 5593886
DOE Contract Number:
FC02-90CE40939
Resource Type:
Patent
Research Org:
Bioengineering Resources, Inc., Fayetteville, AR
Country of Publication:
United States
Language:
English
Subject:
clostridium; stain; produces; acetic; acid; waste; gases; method; apparatus; converting; waste; gases; industrial; processes; oil; refining; carbon; black; coke; ammonia; methanol; production; useful; products; method; introducing; waste; gases; bioreactor; fermented; various; organic; acids; alcohols; anaerobic; bacteria; bioreactor; valuable; products; recovered; separated; purified; exemplary; recovery; process; bioreactor; raffinate; passed; extraction; chamber; non-inhibitory; solvents; simultaneously; introduced; extract; product; product; separated; solvent; distillation; gas; conversion; rates; maximized; centrifuges; hollow; fiber; membranes; means; ultrafiltration; return; entrained; anaerobic; bacteria; bioreactor; raffinate; bioreactor; insuring; cell; concentration; gas conversion; waste gases; waste gases; waste gases; industrial processes; acetic acid; ethanol production; useful products; waste gas; waste gas; waste gas; recovery process; industrial process; carbon black; anaerobic bacteria; anaerobic bacteria; organic acids; organic acid; methanol production; oil refining; extraction chamber; converting waste; various organic; conversion rates; hollow fiber /435/