Method of separating acids and sugars resulting from strong acid hydrolysis
AssigneeArkenol, Inc.
InventorsWilliam A. Farone, John E. Cuzens
Life of this patent
Estimating the term…
Abstract
A economically viable method for producing sugars using concentrated acid hydrolysis of biomass containing cellulose and hemicellulose is disclosed. The cellulose and hemicellulose in the biomass is first decrystallized and then hydrolyzed to produce a hydrolysate containing both sugars and acid. Silica present in the biomass can then be removed for further processing. The remaining solids are then subjected to a second decrystallization and hydrolyzation to optimize the sugar yields. An improved method for separating the sugars from the acid in the hydrolysate is also disclosed. The resulting sugar stream can then be fermented, using an improved method which allows both hexose and pentose sugars to be fermented simultaneously.
Claims12
A method of separating acid and sugars from liquids resulting from the acid hydrolysis of materials containing cellulose and hemicellulose, comprising:
- adding the liquids to a resin separation unit comprising a cross linked polystyrene cation exchange resin bed whereby the sugar is adsorbed on the resin, thereby producing an acid stream containing less than 2% sugar.
Dependencies are inferred from the claim text.