Title: Biomass pre-treatment for co-production of high-concentration C5- and C6-carbohydrates and their derivatives

Abstract

Described is a method of processing biomass to separate it into a liquid fraction enriched in solubilized C5-sugar-containing oligomers and C-5 sugar monomers and a solid fraction enriched in substantially insoluble cellulose and C6-sugar-containing oligomers. The method includes the steps of reacting biomass with a solvent system comprising water, at least one lactone, or at least one furan, or at least one cyclic ether, and at least one acid, for a time and at a temperature to yield the liquid and solid fractions. The liquid and solid fractions may then be separated. Gamma-valeroloactone is a preferred lactone for use in the solvent system. Tetrahydrofuran is a preferred furan species for use in the solvent system.

Inventors:

Dumesic, James A.; Martin Alonso, David; Luterbacher, Jeremy Scott

Issue Date:

2016-06-07

Research Org.:

Wisconsin Alumni Research Foundation, Madison, WI (United States) Glucan Biorenewables LLC, St. Louis, MO (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

1256009

Patent Number(s):

9359650

Application Number:

14/136,564

Assignee:

Glucan Biorenewables LLC (St. Louis, MO)

Patent Classifications (CPCs):

C - CHEMISTRY C12 - BIOCHEMISTRY C12P - FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE {

C - CHEMISTRY C13 - SUGAR INDUSTRY C13K - SACCHARIDES, OTHER THAN SUCROSE, OBTAINED FROM NATURAL SOURCES OR BY HYDROLYSIS OF NATURALLY OCCURRING DI-, OLIGO- OR POLYSACCHARIDES

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C - CHEMISTRY C12 - BIOCHEMISTRY C12P - FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE {

C12P7/06 - Ethanol, i.e. non-beverage

C - CHEMISTRY C13 - SUGAR INDUSTRY C13K - SACCHARIDES, OTHER THAN SUCROSE, OBTAINED FROM NATURAL SOURCES OR BY HYDROLYSIS OF NATURALLY OCCURRING DI-, OLIGO- OR POLYSACCHARIDES

C13K1/02 - obtained by saccharification of cellulosic materials
C13K13/00 - Sugars not otherwise provided for in this class
C13K13/002 - {Xylose}

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

Y02E50/10 - Biofuels

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DOE Contract Number:  

FC02-07ER64494

Resource Type:

Patent

Resource Relation:

Patent File Date: 2013 Dec 20

Country of Publication:

United States

Language:

English

Subject:

09 BIOMASS FUELS; 59 BASIC BIOLOGICAL SCIENCES; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY