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Dilute sulfuric acid pretreatment of cardoon for ethanol production

Paper ID Volume ID Publish Year Pages File Format Full-Text
4022 204 2008 8 PDF Available
Title
Dilute sulfuric acid pretreatment of cardoon for ethanol production
Abstract

Cardoon (Cynara cardunculus L.) is an herbaceous species originating in the Mediterranean area that can be considered as a potential lignocellulosic feedstock for biofuels and high added value products.In this work, cardoon biomass (stems and leaves) was pretreated with dilute sulfuric acid in a batch reactor. The effect of temperature (160–200 °C), acid loading (0–0.2%, w/w) and solid/liquid ratio (5–10%, w/v) on overall sugar yields was studied using a response surface method according to a Box–Behnken experimental design. Overall xylose yield reaches a maximum of 90% of the content in raw material at 180 °C and 0.1% (w/v) acid addition and 7.5% (w/v) solid concentration. Regarding overall glucose yield, best results were achieved at 200 °C, 0.2% (w/w) acid loading and 7.5% (w/v) solid concentration. According to statistical optimization used optima conditions to maximize both overall glucose and xylose yield were 184.5 °C and 0.15% (w/v) acid concentration. At these conditions, 70% and 93% of glucose and xylose, respectively, could be recovered. The highest simultaneous saccharification and fermentation (SSF) yields are obtained when biomass was pretreated at 200 °C with 0.2% sulfuric acid reaching values close to 65% of theoretical.

Keywords
Bioconversion; Ethanol; Simultaneous saccharification and fermentation; Pretreatment; Cynara cardunculus
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Publisher
Database: Elsevier - ScienceDirect
Journal: Biochemical Engineering Journal - Volume 42, Issue 1, 15 October 2008, Pages 84–91
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