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

Abstract

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 method process yields both a carbohydrate precipitate and a high purity lignin.

Inventors:
; ;
Issue Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1176242
Patent Number(s):
7699958
Application Number:
11/563,286
Assignee:
UT-Battelle, LLC (Oak Ridge, TN)
Patent Classifications (CPCs):
D - TEXTILES D21 - PAPER-MAKING D21C - PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS
DOE Contract Number:  
AC05-00OR22725
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 59 BASIC BIOLOGICAL SCIENCES

Citation Formats

Griffith, William Louis, Compere, Alicia Lucille, and Leitten, Jr., Carl Frederick. Method for improving separation of carbohydrates from wood pulping and wood or biomass hydrolysis liquors. United States: N. p., 2010. Web.
Griffith, William Louis, Compere, Alicia Lucille, & Leitten, Jr., Carl Frederick. Method for improving separation of carbohydrates from wood pulping and wood or biomass hydrolysis liquors. United States.
Griffith, William Louis, Compere, Alicia Lucille, and Leitten, Jr., Carl Frederick. Tue . "Method for improving separation of carbohydrates from wood pulping and wood or biomass hydrolysis liquors". United States. https://www.osti.gov/servlets/purl/1176242.
@article{osti_1176242,
title = {Method for improving separation of carbohydrates from wood pulping and wood or biomass hydrolysis liquors},
author = {Griffith, William Louis and Compere, Alicia Lucille and Leitten, Jr., Carl Frederick},
abstractNote = {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 method process yields both a carbohydrate precipitate and a high purity lignin.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2010},
month = {4}
}

Patent:

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