Post-treatment to enhance the enzymatic hydrolysis of pretreated lignocellulosic biomass
AssigneeFPInnovations
InventorsLuis Fernando Del Rio, Waleed Wafa Al Dajani, Changbin Mao, Zhirun Yuan
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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)chemicals.
Claims20
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 a swelling agent and an aqueous solution of a peroxy acid (PA) increasing hydrophilicity of the lignin;
- and
- b) hydrolyzing the lignin-containing biomass.
Dependencies are inferred from the claim text.