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US 10,767,237 B2Granted
Methods of refining a lignocellulosic hydrolysate
AssigneeVirdia, Inc.
InventorsRobert Jansen, Brendon Christopher Stout, Douglas Albert Walton
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Abstract
The present disclosure relates to lignocellulosic biomass processing and refining to produce hemicellulose and cellulose sugars. Methods and systems for refining a lignocellulosic hydrolysate are provided herein.
Claims25
A method for refining a lignocellulosic hydrolysate, the method comprising:
- (a) contacting the lignocellulosic hydrolysate with a liquid anion exchange medium (LAEM) in a separation system comprising two liquid-liquid separation centrifuges fluidically coupled in counter-current mode to form a mixture;
- (b) separating the mixture in the separation system into an organic stream and an aqueous stream, wherein the organic stream comprises the LAEM, a mineral acid and an impurity selected from the group consisting of an organic acid, a lignin, a phenol, and a furfural, and wherein the aqueous stream comprises one or more sugars;
- (c) contacting the organic stream with a base, thereby forming a neutralized mixture;
- and
- (d) recovering a portion of the LAEM from the neutralized mixture;
- wherein steps (a) through (b) are a continuous process.
3 more elements
Dependencies are inferred from the claim text.