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

Patent · Thu Jan 01 00:00:00 EST 1998

OSTI ID:871429

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

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1. Denver, CO
2. Westminster, CO
3. Dacono, CO

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.

• Research Organization: Midwest Research Institute, Kansas City, MO (United States)
• DOE Contract Number: AC36-83CH10093
• Assignee: Midwest Research Institute (Kansas City, MO)
• Patent Number(s): US 5730837
• OSTI ID: 871429
• Country of Publication: United States
• Language: English

Related Subjects

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
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