Processes for fermentation of lignocellulosic glucose to aliphatic alcohols or acids

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 11236371
APP PUB NO 20200056213A1
SERIAL NO

16452659

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A process for producing an organic aliphatic product (such as butanol) from lignocellulosic biomass is provided, comprising: (a) fractionating lignocellulosic biomass in the presence of a solvent for lignin, a hydrolysis catalyst, and water, to produce a liquor containing hemicellulose, cellulose-rich solids, and lignin; (b) washing the cellulose-rich solids and separating the cellulose-rich solids from the liquor; (c) enzymatically hydrolyzing the cellulose-rich solids to generate a hydrolysate comprising glucose; (d) detoxifying the hydrolysate by neutralizing the hydrolysate, removing insoluble solids, and removing or oxidizing residual hydrolysis catalyst, thereby generating a purified hydrolysate; (e) fermenting the purified hydrolysate using a suitable microorganism to produce a dilute organic aliphatic product, wherein the microorganism is recycled with a membrane; (f) extracting the dilute organic aliphatic product into a water-immiscible extractant, to generate an intermediate material; and (g) distilling the intermediate material to generate a concentrated organic aliphatic product.

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Patent Owner(s)

  • GRANBIO INTELLECTUAL PROPERTY HOLDINGS, LLC

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Pylkkanen, Vesa Atlanta, US 108 610
Retsina, Theodora Atlanta, US 148 778

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