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US 11,028,455 B2Granted
Method for treating lignocellulosic materials
AssigneeStora Enso OYJ
InventorsJari Kavakka, Mari Granström
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Abstract
A method of generating a refined a sugar stream that comprises xylose from a biomass hydrolysis solution, including contacting a biomass hydrolysis solution that includes a population of mixed sugars comprising xylose, an acid, and impurities, with a thermally-phase separable solvent such as a glycol solvent to form an extraction mixture; and separating from said extraction mixture a first stream including the thermally-phase separable solvent, acid, and impurities and a second, refined sugar stream that comprises xylose.
Claims8
An extraction mixture comprising:
- a biomass hydrolysis solution that comprises water, a population of mixed sugars comprising xylose, an acid, and impurities;
- and
- a thermally phase separable solvent relative to the water of the biomass hydrolysis solution,
- wherein the extraction mixture is configured to separate into two phases with an increased temperature,
- wherein a first phase comprises the water of the biomass hydrolysis solution and a second phase comprises the thermally-phase separable solvent.
2 more elements
Dependencies are inferred from the claim text.