BIOHYDROGEN PRODUCTION METHOD AND REACTOR
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United States of America Patent
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Apr 23, 2015
app pub date -
Oct 20, 2014
filing date -
Oct 21, 2013
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Abstract
A method for producing H2, VFAs and alcohols from organic material is disclosed, including the steps of introducing organic material and microorganisms into a completely mixed bioreactor for producing H2, CO2, VFAs, and alcohols; sequestering CO2 in the headspace of the reactor; recovering H2 from the headspace; and recovering a first liquid effluent including microorganisms, VFAs, and alcohols. Also disclosed is a system for producing H2, VFAs and alcohols from organic material, including a completely mixed bioreactor for dark fermentation; an input for supplying microorganisms and the organic material to be broken down; a CO2 trap in the headspace and including a solid hydroxide for sequestration of the CO2 gas from the headspace; and a gas output for removal of a gas effluent including H2 gas from the headspace. The system and method provide higher H2 production rates and a H2 stream is substantially free of CO2.
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