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ORGANIC SOLVENT PRETREATMENT OF BIOMASS TO ENHANCE ENZYMATIC SACCHARIFICATION

  • US 20100159517A1
  • Filed: 12/16/2009
  • Published: 06/24/2010
  • Est. Priority Date: 12/19/2008
  • Status: Active Grant
First Claim
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1. A method for producing carbohydrate-enriched biomass comprising(a) providing lignocellulosic biomass comprising lignin;

  • (b) suspending the biomass of (a) in an organic solvent solution comprising water and one or more organo-mercaptan(s) under alkaline conditions whereby a biomass-solvent suspension is formed;

    (c) heating the biomass-solvent suspension to a temperature of about 100°

    C. to about 220°

    C. for about 5 minutes to about 5 hours whereby lignin is fragmented and is dissolved in the suspension; and

    (d) removing the dissolved lignin to produce a carbohydrate-enriched biomass.

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