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:
Jul. 29, 2014
Filed:
Apr. 13, 2012
Nathan Mosier, West Lafayette, IN (US);
Michael R. Ladisch, West Lafayette, IN (US);
Brian Stater, Noblesville, IN (US);
Bradley Spindler, Fishers, IN (US);
Nathan Mosier, West Lafayette, IN (US);
Michael R. Ladisch, West Lafayette, IN (US);
Brian Stater, Noblesville, IN (US);
Bradley Spindler, Fishers, IN (US);
Purdue Research Foundation, West Lafayette, IN (US);
Bowen Engineering Corporation, Indianapolis, IN (US);
Abstract
The disclosure describes a process for the conversion of lignocellulosic biomass to ethanol utilizing a dicarboxylic acid such as maleic acid as an enzyme mimic to hydrolyze the hemicellulose and cellulose of the biomass. Controlling the condition of the maleic acid hydrolysis can selectively hydrolyze the hemicellulose giving as a result a liquid portion rich in xylose and a solid portion rich in glucan. The glucan can be further hydrolyzed to produce a glucose containing material. The sugar materials can be fermented to produce ethanol which is recovered. The dicarboxylic acid is then recovered from the residue left after the ethanol is removed from the fermentation material, and the recovered dicarboxylic acid is recycled to the beginning of the process to treat additional lignocellulosic biomass.