Method of conversion of syngas using microorganism on hydrophilic membrane
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United States of America Patent
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Sep 24, 2013
Grant Date -
Jul 28, 2011
app pub date -
Apr 11, 2011
filing date -
Jun 8, 2007
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Abstract
A stable system for producing liquid products such as ethanol, butanol and other chemicals from syngas components contacts CO or a mixture of CO2 and H2 with a hydrophilic membrane under anaerobic conditions and transfers these components into contact with microorganisms contained as a biofilm on the membrane. Maintaining the microorganisms as a biolayer on the surface of the membrane facilitates cleaning of the membrane surface that retains the biofilm. In addition the shell gas space that surrounds the membranes may be flooded to reduce or remove the biofilm. Agitation of the liquid, by for example the bubbling of gas in the surrounding shell space, can fully or partially remove the biofilm from the membrane.
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