Paper: Optimization of alkaline peroxide pretreatment of rice straw for bioethanol production (II) (34th Symposium on Biotechnology for Fuels and Chemicals (April 30

Monday, April 30, 2012

Napoleon Ballroom C-D, 3rd fl (Sheraton New Orleans)

Siti Fauziyah Rahman¹, Siramulu Gobikhrisnan¹, Natarianto Indrawan¹, Seok-Hwan Park¹, Jae-Hee Park¹, Hwa-Won Ryu², Changshin Sunwoo³ and Don-Hee Park³, (1)Interdisciplinary Program of Graduate School for Bioenergy and Biomaterials, Chonnam National University, Gwangju, South Korea, (2)School of Biological Sciences and Technology, Chonnam National University, Gwangju, South Korea, (3)Interdisciplinary Program of Graduate School for Bioenergy and Biomaterials, School of Biological Science and Technology, Chonnam Nationnal University, Gwangju, South Korea

Rice Straw was pretreated by alkaline peroxide and evaluated in the simultaneous saccharification and fermentation (SSF) process for ethanol production. In this study, variation of time, concentration of H₂O₂, and temperature were investigated. A central composite design of response surface method was used to optimize the condition of pretreatment using alkaline peroxide. Cellulase and β-glucosidase were applied for enzymatic hydrolysis and the yeast Saccharomyces cerevisiae was used for fermentation. Experiment with SSF were performed in flask at 37°C, pH 4.8, and 10% ODM (Oven Dried Material) of substrate composition in a shaking incubator at 150 rpm. SSF was conducted in 3 days. The optimum condition of alkaline peroxide pretreatment for producing high yield of ethanol was found. Alkaline peroxide was found to be one of promising pretreatment for producing bioethanol from lignocellulosic material.

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