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The enhancement of pretreatment and enzymatic hydrolysis of corn stover by FeSO4 pretreatment

Paper ID Volume ID Publish Year Pages File Format Full-Text
3711 183 2011 7 PDF Available
Title
The enhancement of pretreatment and enzymatic hydrolysis of corn stover by FeSO4 pretreatment
Abstract

FeSO4 was investigated as a catalyst for the pretreatment of corn stover. It was observed that FeSO4 significantly increased the hemicellulose degradation in aqueous solutions heated between 140 and 200 °C with high xylose recovery and low cellulose removal. Optimum pretreatment conditions were 0.1 mol/L FeSO4 at 180 °C for 20 min. The cellulose conversion was 36.4% higher than that pretreated by hot water under the same enzymatic hydrolysis conditions. The hydrolysis efficiencies of treated materials were characterized by reaction rate constants, Km and the activity of cellulase. The results showed that FeSO4 pretreatment apparently removed the hemicellulose, promoted the activity of cellulase and enhanced the accessibility of cellulase to cellulose, thus significantly increased the enzymatic digestibility. FeSO4 pretreatment could disrupt almost all ester linkages between cellulose and hemicellulose. The results obtained indicated that FeSO4 pretreatment as a special pretreatment method could enhance enzymatic hydrolysis of lignocellulosic biomass by destructing chemical composition and altering structural features.

► FeSO4 can improve the removal of hemicellulose and the activity of cellulose. ► This study discussed the role of Fe2+ on the hydrolysis mechanism of cellulose. ► FeSO4 pretreatment is appropriate acidity for enzymatic hydrolysis processing.

Keywords
Hemicellulose; Cellulose; Ferrous sulfate; Pretreatment; Enzymatic hydrolysis; Corn stover
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The enhancement of pretreatment and enzymatic hydrolysis of corn stover by FeSO4 pretreatment
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Publisher
Database: Elsevier - ScienceDirect
Journal: Biochemical Engineering Journal - Volume 56, Issue 3, 15 October 2011, Pages 158–164
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