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:
-
- Marietta, GA
- Issue Date:
- OSTI Identifier:
- 865456
- Patent Number(s):
- 4517298
- Application Number:
- 06/534,262
- Assignee:
- Georgia Tech Research Corporation (Atlanta, GA)
- Patent Classifications (CPCs):
-
C - CHEMISTRY C12 - BIOCHEMISTRY C12P - FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE {
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- 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}
}
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