Method of separating lignocellulosic material into lignin, cellulose and dissolved sugars
Patent
·
OSTI ID:597084
A method is described 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.
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- Assignee:
- Midwest Research Inst., Kansas City, MO (United States)
- Patent Number(s):
- US 5,730,837/A/
- Application Number:
- PAN: 8-348,469
- OSTI ID:
- 597084
- Resource Relation:
- Other Information: PBD: 24 Mar 1998
- Country of Publication:
- United States
- Language:
- English
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