Method of producing sugars using strong acid hydrolysis of...

Details Method of producing sugars using strong acid hydrolysis of... Method of producing sugars using strong acid hydrolysis of...

C - Chemistry, Metallurgy

12

P

C12P 7/10 (2006.01) C13B 20/14 (2011.01) C08B 15/02 (2006.01) C12P 19/04 (2006.01) C13K 1/02 (2006.01) C13K 1/04 (2006.01) C13D 3/14 (2006.01)

Patent

CA 2158430

An 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 are first decrystallized and then hydrolysed 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.

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