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Integration of alternative feedstreams for biomass treatment and utilization

United States Patent

March 22, 2011
View the Complete Patent at the US Patent & Trademark Office
National Renewable Energy Laboratory - Visit the NREL Technology Transfer Website
The present invention provides a method for treating biomass composed of integrated feedstocks to produce fermentable sugars. One aspect of the methods described herein includes a pretreatment step wherein biomass is integrated with an alternative feedstream and the resulting integrated feedstock, at relatively high concentrations, is treated with a low concentration of ammonia relative to the dry weight of biomass. In another aspect, a high solids concentration of pretreated biomass is integrated with an alternative feedstream for saccharifiaction.
Hennessey; Susan Marie (Avondale, PA), Friend; Julie (Claymont, DE), Dunson, Jr.; James B. (Newark, DE), Tucker, III; Melvin P. (Lakewood, CO), Elander; Richard T. (Evergreen, CO), Hames; Bonnie (Westminster, CO)
E. I. du Pont de Nemours and Company (Wilmington, DE), Alliance for Sustainable Energy LLC (Golden, CO)
11/ 402,756
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.