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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:
; ; ;
Publication Date:
Research Org.:
Virent, Inc., Madison, WI (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1416365
Patent Number(s):
9,862,893
Application Number:
13/469,906
Assignee:
Virent, Inc. (Madison, WI) DOEEE
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

Citation Formats

Gray, Matthew, Matthes, Megan, Nelson, Thomas, and Held, Andrew. Process for purifying lignocellulosic feedstocks. United States: N. p., 2018. Web.
Gray, Matthew, Matthes, Megan, Nelson, Thomas, & Held, Andrew. Process for purifying lignocellulosic feedstocks. United States.
Gray, Matthew, Matthes, Megan, Nelson, Thomas, and Held, Andrew. 2018. "Process for purifying lignocellulosic feedstocks". United States. doi:. https://www.osti.gov/servlets/purl/1416365.
@article{osti_1416365,
title = {Process for purifying lignocellulosic feedstocks},
author = {Gray, Matthew and Matthes, Megan and Nelson, Thomas and Held, Andrew},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = 2018,
month = 1
}

Patent:

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  • A process for the treatment of biomass to render structural carbohydrates more accessible and/or digestible using concentrated ammonium hydroxide with or without anhydrous ammonia addition, is described. The process preferably uses steam to strip ammonia from the biomass for recycling. The process yields of monosaccharides from the structural carbohydrates are good, particularly as measured by the enzymatic hydrolysis of the structural carbohydrates. The monosaccharides are used as animal feeds and energy sources for ethanol production.
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