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Sugarcane bagasse hemicellulose hydrolysate for ethanol production by acid recovery process

Paper ID Volume ID Publish Year Pages File Format Full-Text
4747 241 2008 5 PDF Available
Title
Sugarcane bagasse hemicellulose hydrolysate for ethanol production by acid recovery process
Abstract

In order to increase the reducing sugar concentration in the sugarcane bagasse hemicellulose acid hydrolysate and recover the acid, the acid hydrolysis was carried out in an acid recycle process and detoxification of hydrolysate was performed by electrodialysis. Two cycles of acidic treatments increased the reducing sugar concentration from 28 to 63.5 g l−1 and sulphuric acid consumption decreased to 0.056 g g−1 bagasse. After treatment by electrodialysis, 90% of acetic acid in hydrolysate was removed and the recovery ratio of sulphuric acid was 88%. The pretreated hydrolysates, supplemented with nutrient materials, were fermented to ethanol using Pachysolen tannophilus DW06. A batch culture with pretreated hydrolysate as substrate was developed giving 19 g ethanol l−1 with a yield of 0.34 g g−1 sugar and productivity of 0.57 g l−1 h−1.

Keywords
Acid recovery; Ethanol; Fermentation; Hemicellulose; Hydrolysate; Sugarcane bagasse
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Publisher
Database: Elsevier - ScienceDirect
Journal: Biochemical Engineering Journal - Volume 38, Issue 1, 15 January 2008, Pages 105–109
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