Aqueous fractionation of biomass based on novel carbohydrate hydrolysis kinetics

Torget, Robert W

Title: Aqueous fractionation of biomass based on novel carbohydrate hydrolysis kinetics

Full Record
Other Related Research

Abstract

A multi-function process for hydrolysis and fractionation of lignocellulosic biomass to separate hemicellulosic sugars from other biomass components comprising extractives and proteins; a portion of a solubilized lignin; cellulose; glucose derived from cellulose; and insoluble lignin from said biomass comprising: a) introducing either solid fresh biomass or partially fractioned lignocellulosic biomass material with entrained acid or water into a reactor and heating to a temperature of up to about 185.degree. C.-205.degree. C. b) allowing the reaction to proceed to a point where about 60% of the hemicellulose has been hydrolyzed in the case of water or complete dissolution in case of acid; c) adding a dilute acid liquid at a pH below about 5 at a temperature of up to about 205.degree. C. for a period ranging from about 5 to about 10 minutes; to hydrolyze the remaining 40% of hemicellulose if water is used. d) quenching the reaction at a temperature of up to about 140.degree. C. to quench all degradation and hydrolysis reactions; and e) introducing into said reaction chamber and simultaneously removing from said reaction chamber, a volumetric flow rate of dilute acid at a temperature of up to about 140.degree. C. to wash out the majoritymore » « less

Inventors:

Torget, Robert W ^[1]

Littleton, CO

Issue Date:: 2001-01-01

Research Org.:: Midwest Research Institute, Kansas City, MO (United States)

OSTI Identifier:: 873707

Patent Number(s):: 6228177

Assignee:: Midwest Research Institute (Kansas City, MO)

Patent Classifications (CPCs):: C - CHEMISTRY C08 - ORGANIC MACROMOLECULAR COMPOUNDS C08H - DERIVATIVES OF NATURAL MACROMOLECULAR COMPOUNDS

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

Show more

C - CHEMISTRY C08 - ORGANIC MACROMOLECULAR COMPOUNDS C08H - DERIVATIVES OF NATURAL MACROMOLECULAR COMPOUNDS
C08H8/00 - Macromolecular compounds derived from lignocellulosic materials {

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

D - TEXTILES D21 - PAPER-MAKING D21C - PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS
D21C3/04 - with acids, acid salts or acid anhydrides {

Show less

DOE Contract Number:: AC36-98GO10337

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: aqueous; fractionation; biomass; based; novel; carbohydrate; hydrolysis; kinetics; multi-function; process; lignocellulosic; separate; hemicellulosic; sugars; components; comprising; extractives; proteins; portion; solubilized; lignin; cellulose; glucose; derived; insoluble; introducing; solid; fresh; partially; fractioned; material; entrained; acid; water; reactor; heating; temperature; 185; degree; -205; allowing; reaction; proceed; 60; hemicellulose; hydrolyzed; complete; dissolution; adding; dilute; liquid; ph; below; 205; period; ranging; 10; minutes; hydrolyze; remaining; 40; quenching; 140; quench; degradation; reactions; chamber; simultaneously; removing; volumetric; flow; rate; wash; majority; obtain; improved; hemicellosic; sugar; yields; simultaneously removing; reaction chamber; flow rate; dilute acid; volumetric flow; biomass material; lignocellulosic biomass; biomass components; biomass comprising; acid liquid; separate hemicellulosic; components comprising; multi-function process; obtain improved; hemicellulosic sugars; cellulosic sugars; aqueous fraction; /127/435/999/

Citation Formats


                    Torget, Robert W. Aqueous fractionation of biomass based on novel carbohydrate hydrolysis kinetics.  United States: N. p., 2001. 
        Web.

Copy to clipboard


                    Torget, Robert W. Aqueous fractionation of biomass based on novel carbohydrate hydrolysis kinetics.  United States.

Copy to clipboard


                    Torget, Robert W. Mon .  
        "Aqueous fractionation of biomass based on novel carbohydrate hydrolysis kinetics".  United States.  https://www.osti.gov/servlets/purl/873707.

Copy to clipboard


                    
@article{osti_873707,

  title        = {Aqueous fractionation of biomass based on novel carbohydrate hydrolysis kinetics},

  author       = {Torget, Robert W},

  abstractNote = {A multi-function process for hydrolysis and fractionation of lignocellulosic biomass to separate hemicellulosic sugars from other biomass components comprising extractives and proteins; a portion of a solubilized lignin; cellulose; glucose derived from cellulose; and insoluble lignin from said biomass comprising: a) introducing either solid fresh biomass or partially fractioned lignocellulosic biomass material with entrained acid or water into a reactor and heating to a temperature of up to about 185.degree. C.-205.degree. C. b) allowing the reaction to proceed to a point where about 60% of the hemicellulose has been hydrolyzed in the case of water or complete dissolution in case of acid; c) adding a dilute acid liquid at a pH below about 5 at a temperature of up to about 205.degree. C. for a period ranging from about 5 to about 10 minutes; to hydrolyze the remaining 40% of hemicellulose if water is used. d) quenching the reaction at a temperature of up to about 140.degree. C. to quench all degradation and hydrolysis reactions; and e) introducing into said reaction chamber and simultaneously removing from said reaction chamber, a volumetric flow rate of dilute acid at a temperature of up to about 140.degree. C. to wash out the majority of the solubilized biomass components, to obtain improved hemicellosic sugar yields.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {2001},

  month        = {1}

}

Copy to clipboard

Patent:

Save / Share:

Export Metadata

Save to My Library

Similar Records in DOE Patents and OSTI.GOV collections:

Method for improving separation of carbohydrates from wood pulping and wood or biomass hydrolysis liquors

Patent Griffith, William Louis; Compere, Alicia Lucille; Leitten, Jr., Carl Frederick

A method for separating carbohydrates from pulping liquors includes the steps of providing a wood pulping or wood or biomass hydrolysis pulping liquor having lignin therein, and mixing the liquor with an acid or a gas which forms an acid upon contact with water to initiate precipitation of carbohydrate to begin formation of a precipitate. During precipitation, at least one long chain carboxylated carbohydrate and at least one cationic polymer, such as a polyamine or polyimine are added, wherein the precipitate aggregates into larger precipitate structures. Carbohydrate gel precipitates are then selectively removed from the larger precipitate structures. The methodmore » « less
Full Text Available
Hydrolysis and fractionation of lignocellulosic biomass

Patent Torget, Robert W [Littleton, CO]; Padukone, Nandan [Denver, CO]; Hatzis, Christos [Denver, CO]; ...

A multi-function process is described for the hydrolysis and fractionation of lignocellulosic biomass to separate hemicellulosic sugars from other biomass components such as extractives and proteins; a portion of the solubilized lignin; cellulose; glucose derived from cellulose; and insoluble lignin from said biomass comprising one or more of the following: optionally, as function 1, introducing a dilute acid of pH 1.0-5.0 into a continual shrinking bed reactor containing a lignocellulosic biomass material at a temperature of about 94 to about 160.degree. C. for a period of about 10 to about 120 minutes at a volumetric flow rate of about 1more » « less
Full Text Available
Resole resin products derived from fractionated organic and aqueous condensates made by fast-pyrolysis of biomass materials

Patent Chum, Helena L [8448 Allison Ct., Arvada, CO 80005]; Black, Stuart K [4976 Raleigh St., Denver, CO 80212]; Diebold, James P [57 N. Yank Way, Lakewood, CO 80228]; ...

A process for preparing phenol-formaldehyde resole resins by fractionating organic and aqueous condensates made by fast-pyrolysis of biomass materials while using a carrier gas to move feed into a reactor to produce phenolic-containing/neutrals in which portions of the phenol normally contained in said resins are replaced by a phenolic/neutral fractions extract obtained by fractionation.
Full Text Available
Biomass pre-treatment for co-production of high-concentration C5- and C6-carbohydrates and their derivatives

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

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 inmore » « less
Full Text Available
One-step catalytic conversion of biomass-derived carbohydrates to liquid fuels

Patent Sen, Ayusman; Yang, Weiran

The invention relates to a method for manufacture of hydrocarbon fuels and oxygenated hydrocarbon fuels such as alkyl substituted tetrahydrofurans such as 2,5-dimethyltetrahydrofuran, 2-methyltetrahydrofuran, 5-methylfurfural and mixtures thereof. The method generally entails forming a mixture of reactants that includes carbonaceous material, water, a metal catalyst and an acid reacting that mixture in the presence of hydrogen. The reaction is performed at a temperature and for a time sufficient to produce a furan type hydrocarbon fuel. The process may be adapted to provide continuous manufacture of hydrocarbon fuels such as a furan type fuel.
Full Text Available

Similar Records