Method of separating lignocellulosic material into lignin, cellulose and dissolved sugars

Title: Method of separating lignocellulosic material into lignin, cellulose and dissolved sugars

Full Record
Other Related Research

Abstract

A method for separating lignocellulosic material into (a) lignin, (b) cellulose, and (c) hemicellulose and dissolved sugars. Wood or herbaceous biomass is digested at elevated temperature in a single-phase mixture of alcohol, water and a water-immiscible organic solvent (e.g., a ketone). After digestion, the amount of water or organic solvent is adjusted so that there is phase separation. The lignin is present in the organic solvent, the cellulose is present in a solid pulp phase, and the aqueous phase includes hemicellulose and any dissolved sugars.

Inventors:

Black, Stuart K ^[1]; Hames, Bonnie R ^[2]; Myers, Michele D ^[3]

Denver, CO
Westminster, CO
Dacono, CO

Issue Date:: 1998-01-01

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

OSTI Identifier:: 871429

Patent Number(s):: 5730837

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

Patent Classifications (CPCs):: D - TEXTILES D21 - PAPER-MAKING D21C - PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS

Show more

D - TEXTILES D21 - PAPER-MAKING D21C - PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS
D21C5/00 - Other processes for obtaining cellulose, e.g. cooking cotton linters
D21C3/20 - with organic solvents {or in solvent environment}
D21C11/0007 - {Recovery of by-products, i.e. compounds other than those necessary for pulping, for multiple uses or not otherwise provided for

Show less

DOE Contract Number:: AC36-83CH10093

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: method; separating; lignocellulosic; material; lignin; cellulose; dissolved; sugars; hemicellulose; wood; herbaceous; biomass; digested; elevated; temperature; single-phase; mixture; alcohol; water; water-immiscible; organic; solvent; ketone; digestion; amount; adjusted; phase; separation; solid; pulp; aqueous; cellulosic material; phase separation; organic solvent; elevated temperature; aqueous phase; lignocellulosic material; water-immiscible organic; phase mixture; separating lignocellulosic; dissolved sugars; immiscible organic; /162/127/

Citation Formats


                    Black, Stuart K, Hames, Bonnie R, and Myers, Michele D. Method of separating lignocellulosic material into lignin, cellulose and dissolved sugars.  United States: N. p., 1998. 
        Web.

Copy to clipboard


                    Black, Stuart K, Hames, Bonnie R, & Myers, Michele D. Method of separating lignocellulosic material into lignin, cellulose and dissolved sugars.  United States.

Copy to clipboard


                    Black, Stuart K, Hames, Bonnie R, and Myers, Michele D. Thu .  
        "Method of separating lignocellulosic material into lignin, cellulose and dissolved sugars".  United States.  https://www.osti.gov/servlets/purl/871429.

Copy to clipboard


                    
@article{osti_871429,

  title        = {Method of separating lignocellulosic material into lignin, cellulose and dissolved sugars},

  author       = {Black, Stuart K and Hames, Bonnie R and Myers, Michele D},

  abstractNote = {A method for separating lignocellulosic material into (a) lignin, (b) cellulose, and (c) hemicellulose and dissolved sugars. Wood or herbaceous biomass is digested at elevated temperature in a single-phase mixture of alcohol, water and a water-immiscible organic solvent (e.g., a ketone). After digestion, the amount of water or organic solvent is adjusted so that there is phase separation. The lignin is present in the organic solvent, the cellulose is present in a solid pulp phase, and the aqueous phase includes hemicellulose and any dissolved sugars.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {1998},

  month        = {1}

}

Copy to clipboard

Patent:

View Patent

Save / Share:

Export Metadata

Save to My Library

Similar Records in DOE Patents and OSTI.GOV collections:

Method for separating the non-inked cellulose fibers from the inked cellulose fibers in cellulosic materials

Patent Woodward, Jonathan [Kingston, TN]

A method for enzymatically separating the non-inked cellulose fibers from the inked cellulose fibers in cellulosic materials. The cellulosic material, such as newsprint, is introduced into a first chamber containing a plastic canvas basket. This first chamber is in fluid communication, via plastic tubing, with a second chamber containing cellobiase beads in a plastic canvas basket. Cellulase is then introduced into the first chamber. A programmable pump then controls the flow rate between the two chambers. The action of cellulase and stirring in the first chamber results in the production of a slurry of newsprint pulp in the first chamber.more »« less
Full Text Available
Methods for increasing sugar yield with size-adjusted lignocellulosic biomass particles

Patent Balan, Venkatesh; Dale, Bruce E.; Harun, Shuhaida

A method of increasing sugar yield in a bioproduct production process is provided comprising pretreating one or more size-adjusted lignocellulosic biomass (LCB) particles with a pretreatment, such as an ammonia pretreatment, wherein the one or more size-adjusted LCB particles form a substrate, with the one or more particles having an average particle size in at least one dimension greater than 5 mm.
Full Text Available
Methods for simultaneous control of lignin content and composition, and cellulose content in plants

Patent Chiang, Vincent Lee C.; Li, Laigeng

The present invention relates to a method of concurrently introducing multiple genes into plants and trees is provided. The method includes simultaneous transformation of plants with multiple genes from the phenylpropanoid pathways including 4CL, CAld5H, AldOMT, SAD and CAD genes and combinations thereof to produce various lines of transgenic plants displaying altered agronomic traits. The agronomic traits of the plants are regulated by the orientation of the specific genes and the selected gene combinations, which are incorporated into the plant genome.
Full Text Available
Conversion of cellulosic materials to sugar

Patent Wilke, Charles R [El Cerrito, CA]; Mitra, Gautam [Berkeley, CA]

A process for the production of sugar, mainly glucose, by the enzymatic degradation of cellulosic materials, particularly cellulosic wastes, which comprises hydrolyzing the cellulosic material in the presence of cellulase enzyme to produce a sugar solution and recovering from the hydrolysis products a major proportion of the cellulase enzyme used in the hydrolysis reaction for re-use. At least a portion of the required makeup cellulase enzyme is produced in a two-stage operation wherein, in the first stage, a portion of the output sugar solution is utilized to grow a cellulase-secreting microorganism, and, in the second stage, cellulase enzyme formation ismore »« less
Full Text Available
Process for whole cell saccharification of lignocelluloses to sugars using a dual bioreactor system

Patent Lu, Jue [Okemos, MI]; Okeke, Benedict [Montgomery, AL]

The present invention describes a process for saccharification of lignocelluloses to sugars using whole microbial cells, which are enriched from cultures inoculated with paper mill waste water, wood processing waste and soil. A three-member bacterial consortium is selected as a potent microbial inocula and immobilized on inedible plant fibers for biomass saccharification. The present invention further relates the design of a dual bioreactor system, with various biocarriers for enzyme immobilization and repeated use. Sugars are continuously removed eliminating end-product inhibition and consumption by cell.
Full Text Available

Similar Records