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.
Patent No.:
Date of Patent:
Nov. 17, 2015
Filed:
Mar. 04, 2013
Wisconsin Alumni Research Foundation, Madison, WI (US);
Xuejun Pan, Fitchburg, WI (US);
Li Shuai, Madison, WI (US);
Wisconsin Alumni Research Foundation, Madison, WI (US);
Abstract
An efficient process for saccharifying lignocellulosic biomass in concentrated aqueous solutions of certain bromine salts, particularly LiBr and CaBr. Real lignocellulose biomass, such as corn stover, switchgrass, waste paper, hardwood, and softwood, can be hydrolyzed without the need for any prior pretreatment. Complete saccharification of both cellulose and hemicellulose is achieved within 5-200 min at temperatures ranging from about 100 to about 160° C. Residual lignin is readily separated from product sugars by filtration or centrifugation and can be used to prepare beneficial coproducts. The bromine salt can be recovered and separated from product sugars (predominantly monosaccharides) by any art-known method and in particular solvent extraction, anti-solvent precipitation, ion-exclusion chromatography and/or ion-exchange chromatography can be employed. Hydrolysis product containing sugars can be employed for in fermentation for the production of value added products or useful fuels.