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Simultaneous saccharification and continuous fermentation of sludge-containing mash for bioethanol production by Saccharomyces cerevisiae CHFY0321

Paper ID Volume ID Publish Year Pages File Format Full-Text
23918 43482 2012 6 PDF Available
Title
Simultaneous saccharification and continuous fermentation of sludge-containing mash for bioethanol production by Saccharomyces cerevisiae CHFY0321
Abstract

A continuous process was employed to improve the volumetric productivity of bioethanol production from cassava mash containing sludge and to simplify the process of ethanol production from cassava. After raw cassava powder was liquefied, it was used directly in a continuous process without sludge filtration or saccharification. A fermentor consisting of four linked stirrer tanks was used for simultaneous saccharification and continuous fermentation (SSCF). Although the mash contained sludge, continuous fermentation was successfully achieved. We chose the dilution rate on the basis of the maximum saccharification time; the highest volumetric productivity and ethanol yield were observed at a dilution rate of 0.028 h−1. The volumetric productivity, final ethanol concentration, and % of theoretical ethanol yield were 2.41 g/L h, 86.1 g/L, and 91%, respectively. This SSCF process using the self-flocculating yeast Saccharomyces cerevisiae CHFY0321 illustrates the possibility of realizing cost-effective bioethanol production by eliminating additional saccharification and filtration processes. In addition, flocculent CHFY0321, which our group developed, showed excellent fermentation results under continuous ethanol production.

• Cassava was used directly in a continuous process without sludge filtration or saccharification. • Continuous fermentation with the mash contained sludge was successfully achieved. • SSCF of CHFY0321 illustrates the possibility of realizing cost-effective bioethanol production. Flocculent CHFY0321 showed excellent fermentation results.

Keywords
Bioethanol; Simultaneous saccharification and continuous fermentation (SSCF); Cassava mash; Continuous process
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Simultaneous saccharification and continuous fermentation of sludge-containing mash for bioethanol production by Saccharomyces cerevisiae CHFY0321
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Biotechnology - Volume 157, Issue 4, 20 February 2012, Pages 584–589
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