METHOD FOR PRODUCING SUGAR SOLUTION

Title:

METHOD FOR PRODUCING SUGAR SOLUTION

Document Type and Number:

WIPO Patent Application WO/2015/119038

Kind Code:

A1

Abstract:

　A method for producing a sugar solution, the method including a step for filtering a saccharified solution from a cellulose-containing biomass derivative by passage through a nanofiltration membrane and/or a reverse osmosis membrane, wherein the method for producing a sugar solution includes a two-stage washing step for washing the nanofiltration membrane and/or reverse osmosis membrane using an acid wash solution after filtration, then washing using an alkali wash solution. Provided is a method for effectively washing a contaminated separation membrane in a method for producing a sugar solution by treating a sugar solution derived from cellulose using a nanofiltration membrane and/or a reverse osmosis membrane.

Inventors:

ASAHI YUKA (JP)
MINAMINO ATSUSHI (JP)
KISHIMOTO JUMPEI (JP)
HIGASA MASASHI (JP)

Application Number:

PCT/JP2015/052529

Publication Date:

August 13, 2015

Filing Date:

January 29, 2015

Export Citation:

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Assignee:

TORAY INDUSTRIES (JP)

International Classes:

C13K1/04; B01D61/02; B01D61/14; B01D65/06

Domestic Patent References:

WO2013183617A1	2013-12-12
WO2012111794A1	2012-08-23
WO2010067785A1	2010-06-17
WO2014024954A1	2014-02-13
WO2014024952A1	2014-02-13

Foreign References:

JP2003259900A	2003-09-16
JP2003236350A	2003-08-26
JPH10304900A	1998-11-17
JPH08289687A	1996-11-05

Other References: