Efficient production of bioethanol from corn stover by pretreatment with a combination of sulfuric acid and sodium hydroxide

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논문

Efficient production of bioethanol from corn stover by pretreatment with a combination of sulfuric acid and sodium hydroxide

학술지

Preparative biochemistry & biotechnology : an international journal for rapid communications

저자명

Tan, Li; Tang, Yue-Qin; Nishimura, Hiroto; Takei, Shouta; Morimura, Shigeru; Kida, Kenji

초록

<P>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, 80C, 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.</P>

발행연도

2013

발행기관

M. Dekker

ISSN

1082-6068

ISSN

1532-2297

권

호

페이지

pp.682-695