Title: Process for purifying lignocellulosic feedstocks

Abstract

The present invention includes methods for removing mineral acids, mineral salts and contaminants, such as metal impurities, ash, terpenoids, stilbenes, flavonoids, proteins, and other inorganic products, from a lignocellulosic feedstock stream containing organic acids, carbohydrates, starches, polysaccharides, disaccharides, monosaccharides, sugars, sugar alcohols, phenols, cresols, and other oxygenated hydrocarbons, in a manner that maintains a portion of the organic acids and other oxygenated hydrocarbons in the product stream.

Inventors:

Gray, Matthew; Matthes, Megan; Nelson, Thomas; Held, Andrew

Issue Date:

2018-01-09

Research Org.:

Virent, Inc., Madison, WI (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

1416365

Patent Number(s):

9862893

Application Number:

13/469,906

Assignee:

Virent, Inc. (Madison, WI)

Patent Classifications (CPCs):

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

C - CHEMISTRY C10 - PETROLEUM, GAS OR COKE INDUSTRIES C10G - CRACKING HYDROCARBON OILS

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

C13K13/002 - {Xylose}
C13K1/06 - obtained by saccharification of starch or raw materials containing starch

C - CHEMISTRY C10 - PETROLEUM, GAS OR COKE INDUSTRIES C10G - CRACKING HYDROCARBON OILS

C10G3/00 - Production of liquid hydrocarbon mixtures from oxygen-containing or organic materials, e.g. fatty oils, fatty acids

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02P - CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS

Y02P30/20 - Bio-feedstock

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

C13K13/007 - {Separation of sugars provided for in subclass C13K

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

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 {

C12P2201/00 - Pretreatment of cellulosic or lignocellulosic material for subsequent enzymatic treatment or hydrolysis

C - CHEMISTRY C10 - PETROLEUM, GAS OR COKE INDUSTRIES C10G - CRACKING HYDROCARBON OILS

C10G2300/201 - Impurities

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

C - CHEMISTRY C10 - PETROLEUM, GAS OR COKE INDUSTRIES C10G - CRACKING HYDROCARBON OILS

C10G17/02 - with acids or acid-containing liquids, e.g. acid sludge
C10G2300/20 - Characteristics of the feedstock or the products
C10G2300/1014 - of vegetal origin

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DOE Contract Number:  

EE000304

Resource Type:

Patent

Resource Relation:

Patent File Date: 2012 May 11

Country of Publication:

United States

Language:

English

Subject:

09 BIOMASS FUELS