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Ethanol and furfural production from corn stover using a hybrid fractionation process with zinc chloride and simultaneous saccharification and fermentation (SSF)

Paper ID Volume ID Publish Year Pages File Format Full-Text
34937 45060 2012 8 PDF Available
Title
Ethanol and furfural production from corn stover using a hybrid fractionation process with zinc chloride and simultaneous saccharification and fermentation (SSF)
Abstract

A two-stage hybrid fractionation process was investigated to produce cellulosic ethanol and furfural from corn stover. In the first stage, zinc chloride (ZnCl2) was used to selectively solubilize hemicellulose. During the second stage, the remaining treated solids were converted into ethanol using commercial cellulase and Saccharomyces cerevisiae or recombinant Escherichia coli, KO11. This hybrid fractionation process recovered 93.8% of glucan, 89.7% of xylan, 71.1% of arabinan, and 74.9% of lignin under optimal reaction conditions (1st stage: 5% acidified ZnCl2, 7.5 ml/min, 150 °C (10 min) and 170 °C (10 min); 2nd stage: simultaneous saccharification and fermentation (SSF) using S. cerevisiae). The furfural yield from the hemicellulose hydrolysates was 58%. The SSF of the treated solids resulted in 69–98% of the theoretical maximum ethanol yields based on the glucan content in the treated solids. After fermentation, the solid residues contained primarily lignin. Based on the total lignin in untreated corn stover, the lignin recovery yield was 74.9%.

► A two-stage fractionation by zinc chloride and fermentation was investigated. ► Separation of C5 sugars and conversion of them into furfural by thermal reaction. ► Conversion of C6 sugars into ethanol using robust S. cerevisiae yeast or recombinant strain. ► Easy lignin recovery after fermentation with high yield.

Keywords
Biofuel; Lignocellulose; Thermal conversion; Lignin; Xylooligomer; Furfural
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Ethanol and furfural production from corn stover using a hybrid fractionation process with zinc chloride and simultaneous saccharification and fermentation (SSF)
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Publisher
Database: Elsevier - ScienceDirect
Journal: Process Biochemistry - Volume 47, Issue 2, February 2012, Pages 319–326
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us