The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Mar. 01, 2016

Filed:

Sep. 24, 2012
Applicant:

Kawasaki Jukogyo Kabushiki Kaisha, Kobe-shi, Hyogo, JP;

Inventors:

Hiromasa Kusuda, Kobe, JP;

Noriaki Izumi, Kobe, JP;

Hironori Tajiri, Kobe, JP;

Shoji Tsujita, Itami, JP;

Takashi Nishino, Suita, JP;

Manabu Masamoto, Kobe, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C12P 7/10 (2006.01);
U.S. Cl.
CPC ...
C12P 7/10 (2013.01); C12P 2201/00 (2013.01); C12P 2203/00 (2013.01); Y02E 50/16 (2013.01);
Abstract

In the present disclosure, after a volatile organic acid is added as a catalyst to a slurry and the hydrolytic saccharification reaction of hemicellulose is performed, the volatile organic acid (including one added to the slurry and one produced as a by-product) contained in a C5 saccharified solution can be easily recovered by adding a small amount of sulfuric acid to the C5 saccharified solution and subjecting the C5 saccharified solution to air stripping treatment. The efficiency of hydrolytic saccharification of hemicellulose into C5 sugars using a volatile organic acid can also be continuously improved by adding the recovered volatile organic acid as a catalyst to another slurry of cellulosic biomass.


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