Title: Treatment of biomass to obtain ethanol

Abstract

Ethanol was produced using biocatalysts that are able to ferment sugars derived from treated biomass. Sugars were obtained by pretreating biomass under conditions of high solids and low ammonia concentration, followed by saccharification.

Inventors:

Dunson, Jr., James B. ^[1]; Elander, Richard T ^[2]; Tucker, III, Melvin P. ^[3]; Hennessey, Susan Marie ^[4]

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+ Show Inventor Affiliations

1. (Newark, DE)
2. Evergreen, CO
3. (Lakewood, CO)
4. Avondale, PA

Issue Date:

Tue Aug 16 00:00:00 EDT 2011

Research Org.:

E. I. du Pont de Nemours and Company (Wilmington, DE)

Sponsoring Org.:

USDOE

OSTI Identifier:

1025538

Patent Number(s):

7998713

Application Number:

11/402,573

Assignee:

E. I. du Pont de Nemours and Company (Wilmington, DE); Alliance for Sustainable Energy LLC (Golden, CO)

Patent Classifications (CPCs):

C - CHEMISTRY C12 - BIOCHEMISTRY C12M - APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY

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 {

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C - CHEMISTRY C12 - BIOCHEMISTRY C12M - APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY

C12M27/02 - {Stirrer or mobile mixing elements}
C12M27/20 - {Baffles
C12M45/02 - {by mechanical forces
C12M45/09 - {by enzymatic treatment}

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 {

C12P19/02 - Monosaccharides
C12P2201/00 - Pretreatment of cellulosic or lignocellulosic material for subsequent enzymatic treatment or hydrolysis
C12P7/08 - produced as by-product or from waste or cellulosic material substrate

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

Y02E50/10 - Biofuels
Y02E50/30 - Fuel from waste

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02W - CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT

Y02W10/40 - Valorisation of by-products of wastewater, sewage or sludge processing

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DOE Contract Number:  

04-03-CA-70224

Resource Type:

Patent

Country of Publication:

United States

Language:

English

Subject:

09 BIOMASS FUELS