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Process for purifying lignocellulosic feedstocks

United States Patent

9,862,893
January 9, 2018
View the Complete Patent at the US Patent & Trademark Office
The present invention includes methods for removing mineral acids, mineral salts and contaminants, such as metal impurities, ash, terpenoids, stilbenes, flavonoids, proteins, and other inorganic products, from a lignocellulosic feedstock stream containing organic acids, carbohydrates, starches, polysaccharides, disaccharides, monosaccharides, sugars, sugar alcohols, phenols, cresols, and other oxygenated hydrocarbons, in a manner that maintains a portion of the organic acids and other oxygenated hydrocarbons in the product stream.
Gray; Matthew (Madison, WI), Matthes; Megan (Madison, WI), Nelson; Thomas (Sun Prairie, WI), Held; Andrew (Madison, WI)
Virent, Inc. (Madison, WI)
13/ 469,906
20120289692
May 11, 2012
FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT This invention was made with government support under an award provided by the U.S. Department of Energy, Award No. DE-EE0003044. The government has certain rights in the invention.