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Treatment of biomass to obtain fermentable sugars

United States Patent

April 26, 2011
View the Complete Patent at the US Patent & Trademark Office
National Renewable Energy Laboratory - Visit the NREL Technology Transfer Website
Biomass is pretreated using a low concentration of aqueous ammonia at high biomass concentration. Pretreated biomass is further hydrolyzed with a saccharification enzyme consortium. Fermentable sugars released by saccharification may be utilized for the production of target chemicals by fermentation.
Dunson, Jr.; James B. (Newark, DE), Tucker; Melvin (Lakewood, CO), Elander; Richard (Evergreen, CO), Hennessey; Susan M. (Avondale, PA)
E. I. du Pont de Nemours and Company (Wilmington, DE), Alliance For Sustainable Energy LLC (Golden, CO)
11/ 402,757
April 12, 2006
STATEMENT OF GOVERNMENT RIGHTS This invention was made with United States government support under Contract No. 04-03-CA-70224 awarded by the Department of Energy. The government has certain rights in this invention.