Skip to Content
Find More Like This
Return to Search

Methods for pretreating biomass

United States Patent

9,644,222
May 9, 2017
View the Complete Patent at the US Patent & Trademark Office
A method for pretreating biomass is provided, which includes, in a reactor, allowing gaseous ammonia to condense on the biomass and react with water present in the biomass to produce pretreated biomass, wherein reactivity of polysaccharides in the biomass is increased during subsequent biological conversion as compared to the reactivity of polysaccharides in biomass which has not been pretreated. A method for pretreating biomass with a liquid ammonia and recovering the liquid ammonia is also provided. Related systems which include a biochemical or biofuel production facility are also disclosed.
Balan; Venkatesh (East Lansing, MI), Dale; Bruce E (Mason, MI), Chundawat; Shishir (Piscataway, NJ), Sousa; Leonardo (Lansing, MI)
BOARD OF TRUSTEES OF MICHIGAN STATE UNIVERSITY (East Lansing, MI)
13/ 997,043
December 22, 2011
STATEMENT OF GOVERNMENT RIGHTS This invention was made with government support under XCO-3-33033-01 awarded by the U.S. Department of Energy and under 00-52104-9663 awarded by the U.S. Department of Agriculture. The government has certain rights in the invention.