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Title: Process for producing fuel grade ethanol by continuous fermentation, solvent extraction and alcohol separation

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.

Inventors:
 [1]
  1. Marietta, GA
Issue Date:
OSTI Identifier:
865456
Patent Number(s):
4517298
Application Number:
06/534,262
Assignee:
Georgia Tech Research Corporation (Atlanta, GA)
DOE Contract Number:  
XK090821
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
process; producing; fuel; grade; ethanol; continuous; fermentation; solvent; extraction; alcohol; separation; substantially; free; water; prepared; continuously; fermenting; fermentable; biomass; feedstock; unit; forming; aqueous; liquor; containing; microorganisms; extracting; portion; organic; extractant; alcohol-organic; extract; phase; raffinate; separated; comprising; unextracted; returned; extract phase; solvent phase; substantially free; solvent extraction; organic solvent; liquor containing; solvent extract; producing fuel; continuous fermentation; /435/44/999/

Citation Formats

Tedder, Daniel W. Process for producing fuel grade ethanol by continuous fermentation, solvent extraction and alcohol separation. United States: N. p., 1985. Web.
Tedder, Daniel W. Process for producing fuel grade ethanol by continuous fermentation, solvent extraction and alcohol separation. United States.
Tedder, Daniel W. Tue . "Process for producing fuel grade ethanol by continuous fermentation, solvent extraction and alcohol separation". United States. https://www.osti.gov/servlets/purl/865456.
@article{osti_865456,
title = {Process for producing fuel grade ethanol by continuous fermentation, solvent extraction and alcohol separation},
author = {Tedder, Daniel W},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1985},
month = {5}
}

Patent:

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