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Alkaline peroxide pretreatment of rapeseed straw for enhancing bioethanol production by Same Vessel Saccharification and Co-Fermentation

descriptionPublicationkeyboard_double_arrow_right Article , Journal 01 Jan 2012Publisher:Elsevier BVJournal:Bioresource Technology, volume 104, pages 349-357 (issn: 0960-8524,

Authors: Karagöz, Pinar; Vaitkeviciute-Rocha, Indre; Özkan, Melek; Angelidaki, Irini;

doi: 10.1016/j.biortech.2011.10.075

pmid: 22104093

Alkaline peroxide pretreatment of rapeseed straw for enhancing bioethanol production by Same Vessel Saccharification and Co-Fermentation

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Abstract

Alkaline peroxide pretreatment of rapeseed straw was evaluated for conversion of cellulose and hemicellulose to fermentable sugars. After pretreatment, a liquid phase called pretreatment liquid and a solid phase were separated by filtration. The neutralized pretreatment liquids were used in a co-fermentation process, with Saccharomyces cerevisiae and Pichia stipitis. The solid fraction was used for simultaneous saccharification and co-fermentation process in the same vessel. The effects of various operating variables were investigated. Pretreatment with 5% (v/v) H(2)O(2) at 50 °C for 1h was found to be the optimal pretreatment combination with respect to overall ethanol production. At this condition, 5.73 g ethanol was obtained from pretreatment liquid and 14.07 g ethanol was produced by co-fermentation of solid fraction with P. stipitis. Optimum delignification was observed when 0.5 M MgSO(4) was included in the pretreatment mixture, and it resulted in 0.92% increase in ethanol production efficiency.

Related Organizations

Technical University of Denmark
Denmark
Gebze Technical University
Turkey

Keywords

Ethanol, Brassica rapa, Same Vessel Saccharification and Fermentation (SVSF), Bioethanol, Saccharomyces cerevisiae, Alkalies, Plant Components, Aerial, Pichia, Peroxides, Co-fermentation, Biofuels, Rapeseed straw

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	citations This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).	104
	popularity This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.	Top 10%
	influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).	Top 10%
	impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.	Top 10%