1. EFFICIENT PRODUCTION OF BIOETHANOL FROM CORN STOVER BY PRETREATMENT WITH A COMBINATION OF SULFURIC ACID AND SODIUM HYDROXIDE.
- Author
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Tan, Li, Tang, Yue-Qin, Nishimura, Hiroto, Takei, Shouta, Morimura, Shigeru, and Kida, Kenji
- Subjects
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ETHANOL as fuel , *CORN stover , *LIGNOCELLULOSE , *BIOMASS , *FEEDSTOCK - Abstract
Corn stover is the most abundant agricultural residue in China and a valuable reservoir for bioethanol production. In this study, we proposed a process for producing bioethanol from corn stover; the pretreatment prior to presaccharification, followed by simultaneous saccharification and fermentation (SSF) by using a flocculating Saccharomyces cerevisiae strain, was optimized. Pretreatment with acid–alkali combination (1% H2SO4, 150°C, 10 min, followed by 1% NaOH, 80°C, 60 min) resulted in efficient lignin removal and excellent recovery of xylose and glucose. A glucose recovery efficiency of 92.3% was obtained by enzymatic saccharification, when the pretreated solid load was 15%. SSF was carried out at 35°C for 36 hr after presaccharification at 50°C for 24 hr, and an ethanol yield of 88.2% was achieved at a solid load of 15% and an enzyme dosage of 15 FPU/g pretreated corn stover. [ABSTRACT FROM AUTHOR]
- Published
- 2013
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