NOVEL POST-TREATMENT TO ENHANCE THE ENZYMATIC HYDROLYSIS OF PRETREATED LIGNOCELLULOSIC BIOMASS
First Claim
1. A process for improving the efficiency of the enzymatic hydrolysis of a pre-treated biomass comprising the steps ofa) treating the biomass containing lignin with an aqueous solution of a peroxy acid (PA) increasing hydrophilicity of the lignin;
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Abstract
The present disclosure relates to a process for extracting sugars from a pretreated lignocellulosic biomass. This process consists of contacting the pretreated lignocellulosic biomass with low charges of an aqueous peroxy acid (PA) solution to produce a liquid fraction (containing a small amount of lignin and hemicellulose degradation products) and a solid fraction containing cellulose, hemicellulose and lignin. The solid fraction can then be subjected to enzymatic hydrolysis with a variety of cell wall-degrading enzymes to produce a lignin-rich residue and a sugar solution that can be fermented to a variety of (bio)chem icals.
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Citations
20 Claims
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1. A process for improving the efficiency of the enzymatic hydrolysis of a pre-treated biomass comprising the steps of
a) treating the biomass containing lignin with an aqueous solution of a peroxy acid (PA) increasing hydrophilicity of the lignin; - and
b) hydrolyzing the lignin-containing biomass. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification