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Bioethanol production based on simultaneous saccharification and fermentation of steam-pretreated Salix at high dry-matter content

Paper ID Volume ID Publish Year Pages File Format Full-Text
18516 42725 2006 7 PDF Available
Title
Bioethanol production based on simultaneous saccharification and fermentation of steam-pretreated Salix at high dry-matter content
Abstract

Simultaneous saccharification and fermentation (SSF) was performed on the slurries resulting from steam pretreatment of non-, SO2- and H2SO4-impregnated Salix chips. The aim was to increase the ethanol concentration by running SSF at high dry-matter content, while maintaining a high ethanol yield. Using SO2-impregnated Salix chips in steam pretreatment resulted in the highest ethanol concentration in the subsequent SSF. At a water-insoluble solids concentration of 9%, 32 g/L ethanol was obtained after 78 h of SSF, using 3.3 g/L baker's yeast (Saccharomyces cerevisiae) cultivated on the pretreatment liquid. This corresponds to an overall ethanol yield of 76% of the theoretical, based on the glucan and mannan content in the raw material. The cultivation procedure made the yeast better adapted to the medium. However, increasing the substrate loading further resulted in decreased fermentability.

Keywords
Ethanol production; SSF; Steam pretreatment; Salix; Willow
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Bioethanol production based on simultaneous saccharification and fermentation of steam-pretreated Salix at high dry-matter content
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Publisher
Database: Elsevier - ScienceDirect
Journal: Enzyme and Microbial Technology - Volume 39, Issue 4, 2 August 2006, Pages 756–762
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
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Full-text PDF Download
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Any Questions? feel free to contact us