title: Alkaline peroxide pretreatment of rapeseed straw for enhancing bioethanol production by Same Vessel Saccharification and Co-Fermentation.
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.
authors: Department of Environmental Engineering, Technical University of Denmark, Miljoevej 113, 2800 Kongens Lyngby, Denmark.
authors: Pinar
authors: P
authors: Karagöz
authors: Indre V
authors: IV
authors: Rocha
authors: Melek
authors: M
authors: Özkan
authors: Irini
authors: I
authors: Angelidaki
mesh_terms: D000468:Alkalies / Q000737:chemistry; D056804:Biofuels / Q000382:microbiology*; D029741:Brassica rapa / Q000737:chemistry* / Q000382:microbiology*; D000431:Ethanol / Q000302:isolation & purification / Q000378:metabolism*; D010545:Peroxides / Q000737:chemistry*; D010843:Pichia / Q000254:growth & development / Q000378:metabolism*; D035261:Plant Components, Aerial / Q000737:chemistry / Q000382:microbiology; D012441:Saccharomyces cerevisiae / Q000254:growth & development / Q000378:metabolism*
chemical_list: D000468:Alkalies; D056804:Biofuels; D010545:Peroxides; D000431:Ethanol