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Title: Two-stage dilute acid prehydrolysis of biomass

Abstract

A two-stage dilute acid prehydrolysis process on xylan containing hemicellulose in biomass is effected by: treating feedstock of hemicellulosic material comprising xylan that is slow hydrolyzable and xylan that is fast hydrolyzable under predetermined low temperature conditions with a dilute acid for a residence time sufficient to hydrolyze the fast hydrolyzable xylan to xylose; removing said xylose from said fast hydrolyzable xylan and leaving a residue; and treating said residue having a slow hydrolyzable xylan with a dilute acid under predetermined high temperature conditions for a residence time required to hydrolyze said slow hydrolyzable xylan to xylose.

Inventors:
 [1];  [2]
  1. Winter Haven, FL
  2. Littleton, CO
Issue Date:
Research Org.:
Midwest Research Institute, Kansas City, MO (United States)
OSTI Identifier:
868366
Patent Number(s):
5125977
Assignee:
United States of America as represented by United States (Washington, DC)
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
DOE Contract Number:  
AC02-83CH10093
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
two-stage; dilute; acid; prehydrolysis; biomass; process; xylan; containing; hemicellulose; effected; treating; feedstock; hemicellulosic; material; comprising; slow; hydrolyzable; fast; predetermined; temperature; conditions; residence; time; sufficient; hydrolyze; xylose; removing; leaving; residue; required; cellulosic material; time required; temperature conditions; residence time; material comprising; time sufficient; dilute acid; hydrolysis process; two-stage dilute; acid prehydrolysis; /127/

Citation Formats

Grohmann, Karel, and Torget, Robert W. Two-stage dilute acid prehydrolysis of biomass. United States: N. p., 1992. Web.
Grohmann, Karel, & Torget, Robert W. Two-stage dilute acid prehydrolysis of biomass. United States.
Grohmann, Karel, and Torget, Robert W. Wed . "Two-stage dilute acid prehydrolysis of biomass". United States. https://www.osti.gov/servlets/purl/868366.
@article{osti_868366,
title = {Two-stage dilute acid prehydrolysis of biomass},
author = {Grohmann, Karel and Torget, Robert W},
abstractNote = {A two-stage dilute acid prehydrolysis process on xylan containing hemicellulose in biomass is effected by: treating feedstock of hemicellulosic material comprising xylan that is slow hydrolyzable and xylan that is fast hydrolyzable under predetermined low temperature conditions with a dilute acid for a residence time sufficient to hydrolyze the fast hydrolyzable xylan to xylose; removing said xylose from said fast hydrolyzable xylan and leaving a residue; and treating said residue having a slow hydrolyzable xylan with a dilute acid under predetermined high temperature conditions for a residence time required to hydrolyze said slow hydrolyzable xylan to xylose.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1992},
month = {1}
}

Patent:

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