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    Process For Producing Fuel Grade Ethanol By Continuous Fermentation, Solvent Extraction And Alcohol Separation

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    4517298.pdf (350.6Kb)
    Date
    5/14/1985
    Author
    Tedder, Daniel W.
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    Abstract
    Alcohol substantially free of water is prepared by continuously fermenting a fermentable biomass feedstock in a fermentation unit, thereby forming an aqueous fermentation liquor containing alcohol and microorganisms. Continuously extracting a portion of alcohol from said fermentation liquor with an organic solvent system containing an extractant for said alcohol, thereby forming an alcohol-organic solvent extract phase and an aqueous raffinate. Said alcohol is separated from said alcohol-organic solvent phase. A raffinate comprising microorganisms and unextracted alcohol is returned to the fermentation unit.
    URI
    http://hdl.handle.net/1853/57543
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