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Production of ethanol from microwave-assisted alkali pretreated wheat straw

Paper ID Volume ID Publish Year Pages File Format Full-Text
36616 45138 2006 5 PDF Available
Title
Production of ethanol from microwave-assisted alkali pretreated wheat straw
Abstract

In order to evaluate the suitability of production of ethanol from the microwave-assisted alkali pretreated wheat straw, the simultaneous saccharification and fermentation (SSF) of the microwave-assisted and conventional alkali pretreated wheat straw to ethanol were optimized and compared using cellulase from Trichoderma reesei and Saccharomyces cerevisiae YC-097 cells. The SSF optima for the microwave-assisted alkali pretreated wheat straw were 100 g l−1 substrate, 40 °C, 15 mg [cellulase] g−1 [substrate], initial pH 5.3 and 72 h. Under the above optimum conditions, the ethanol concentration reached 34.3 g l−1 and the ethanol yield was 69.3%. The SSF optima for the conventional alkali pretreated wheat straw were 100 g l−1 substrate, 40 °C, 20 mg [cellulase] g−1 [substrate], initial pH 5.3 and 96 h. Under its optimum conditions, the ethanol concentration and the ethanol yield were 31.1 g l−1 and 64.8%, respectively. It was obvious that production of ethanol from microwave-assisted pretreated wheat straw had lower enzyme loading, shorter reaction time and could achieve higher ethanol concentration and yield than from the conventional alkali pretreated wheat straw. The microwave-assisted alkali pretreatment was an efficient pretreatment method of wheat straw for its ethanol production.

Keywords
Simultaneous saccharification and fermentation; Microwave-assisted alkali pretreatment; Alkali pretreatment; Wheat straw; Ethanol
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Production of ethanol from microwave-assisted alkali pretreated wheat straw
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Publisher
Database: Elsevier - ScienceDirect
Journal: Process Biochemistry - Volume 41, Issue 4, April 2006, Pages 869–873
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