Saccharification of cellulose

Details Saccharification of cellulose Saccharification of cellulose

C - Chemistry, Metallurgy

13

K

195/2, 260/232

C13K 1/02 (2006.01) C12P 7/10 (2006.01)

Patent

CA 1133900

ABSTRACT OF THE DISCLOSURE A method for effecting saccharification of raw cellulosic material taken from any available source. The cellulosic material is hydrolyzed by immersing it in a bath of anhydrous liquid hydrogen chloride to yield usable glucose and other products. The cellulosic material may be processed through one or more pre-treatment steps, each acting to enhance the yield of glucose and other products when the pre-treated material is subjected to hydrolyzation by anhydrous liquid hydrogen chloride. The raw material may first be immersed in a caustic solution which swells the cellular structure to render it more reactive and acts to solubilize the lignins and other com- pounds contained therein, these being washed away to provide a prepared cel- lulosic material. In another or second preparatory step, the material may be further prepared by subjecting it to a viscose process to produce a vis- cous solution of sodium cellulose xanthate in sodium hydroxide, from which solution the aqueous phase is separated, leaving a viscose intermediate. In the final step, the viscose intermediate is hydrolyzed by immersing it in a bath of anhydrous liquid hydrogen chloride.

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