Method of Separating Lignocellulosic Material into Lignin, Cellulose and Dissolved Sugars

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.

US 5,730,837   [MORE INFO]

Inventor(s): Michele D. Myers; Bonnie R. Hames; Stuart K. Black

Type of Offer: Licensing

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