Method for production sugar liquid
AssigneeToray Industries, Inc.
InventorsHiroyuki Kurihara, Atsushi Minamino, Masateru Ito, Hideki Sawai, Masayuki Hanakawa, Shin-ichi Minegishi, Katsushige Yamada
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Abstract
A method of producing a sugar liquid using a cellulose-containing biomass as a raw material includes (a) hydrolyzing a cellulose-containing biomass to produce an aqueous sugar solution and (b) filtering the obtained aqueous sugar solution through a reverse osmosis membrane to collect a purified sugar liquid from a feed side, while removing fermentation-inhibiting substances from a permeate side.
Claims13
A method of producing a sugar liquid using a cellulose-containing biomass as a raw material comprising:
- (a) hydrolyzing a cellulose-containing biomass to produce an aqueous sugar solution;
- and
- (b) filtering the obtained aqueous sugar solution through a reverse osmosis membrane to collect a purified sugar liquid from a feed side, while removing fermentation-inhibiting substances comprising vanillin from a permeate side,
- wherein (b) filters said aqueous sugar solution through a nanofiltration membrane to collect a purified sugar liquid from a feed side and filters obtained filtrate through the reverse osmosis membrane to recover sugar from said obtained filtrate at a feed side, and
- wherein the reverse osmosis membrane is selected from a cross-linked wholly aromatic polyamide reverse osmosis membrane and a polyamide reverse osmosis membrane.
A method of producing a sugar liquid using a cellulose-containing biomass as a raw material comprising:
- (a) hydrolyzing a cellulose-containing biomass to produce an aqueous sugar solution;
- and
- (b) filtering the obtained aqueous sugar solution through a reverse osmosis membrane to collect a purified sugar liquid from a feed side, while removing fermentation-inhibiting substances comprising vanillin from a permeate side,
- wherein (b) filters said aqueous sugar solution through a nanofiltration membrane to collect a purified sugar liquid from a feed side and filtering obtained filtrate through the reverse osmosis membrane to recover sugar from said obtained filtrate at a feed side, and
- wherein the reverse osmosis membrane is selected from a cross-linked wholly aromatic polyamide reverse osmosis membrane, a polyamide reverse osmosis membrane and a cellulose acetate reverse osmosis membrane.
Dependencies are inferred from the claim text.