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Prehydrolysis of lignocellulose

United States Patent

5,705,369
January 6, 1998
View the Complete Patent at the US Patent & Trademark Office
National Renewable Energy Laboratory - Visit the NREL Technology Transfer Website
Pretreatment Methods for Biomass Conversion into Biofuels and Biopolymers
The invention relates to the prehydrolysis of lignocellulose by passing an acidic or alkaline solution through solid lignocellulosic particles with removal of soluble components as they are formed. The technique permits a less severe combination of pH, temperature and time than conventional prehydrolysis. Furthermore, greater extraction of both hemicellulose and lignin occurs simultaneously in the same reactor and under the same conditions.
Torget; Robert W. (Littleton, CO), Kadam; Kiran L. (Golden, CO), Hsu; Teh-An (Golden, CO), Philippidis; George P. (Highlands Ranch, CO), Wyman; Charles E. (Lakewood, CO)
Midwest Research Institute (Kansas City, MO)
08/ 443,693
May 18, 1995
The United States Government has rights in this invention under Contract No. DE ACO2-83CH10093 between the United States Department of Energy and the National Renewable Energy Laboratory, a division of the Midwest Research Institute.