Microbial fuel cell treatment of ethanol fermentation process water
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United States of America Patent
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Jun 5, 2012
Grant Date -
Aug 12, 2010
app pub date -
Feb 6, 2009
filing date -
Feb 6, 2009
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Abstract
The present invention relates to a method for removing inhibitor compounds from a cellulosic biomass-to-ethanol process which includes a pretreatment step of raw cellulosic biomass material and the production of fermentation process water after production and removal of ethanol from a fermentation step, the method comprising contacting said fermentation process water with an anode of a microbial fuel cell, said anode containing microbes thereon which oxidatively degrade one or more of said inhibitor compounds while producing electrical energy or hydrogen from said oxidative degradation, and wherein said anode is in electrical communication with a cathode, and a porous material (such as a porous or cation-permeable membrane) separates said anode and cathode.
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