Statistical optimization of sulfite pretreatment of corncob residues for high concentration ethanol production

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논문

Statistical optimization of sulfite pretreatment of corncob residues for high concentration ethanol production

학술지

Bioresource technology : biomass, bioenergy, biowastes, conversion technologies, biotransformations, production technologies

저자명

Cheng, K.K.; Wang, W.; Zhang, J.A.; Zhao, Q.; Li, J.P.; Xue, J.W.

초록

In this study, a central composite design of response surface method was used to optimize sulfite pretreatment of corncob residues, in respect to sulfite charge (5-10%), treatment time (1-2h), liquid/solid (l/s) ratio (6:1-10:1) and temperature (150-180oC) for maximizing glucose production in enzymatic hydrolysis process. The relative optimum condition was obtained as follows: sulfite charge 7.1%, l/s ratio 7.6:1, temperature 156oC for 1.4h, corresponding to 79.3% total glucan converted to glucose+cellobiose. In the subsequent simultaneous saccharification and fermentation (SSF) experiments using 15% glucan substrates pretreated under this kind of conditions, 60.8g ethanoll-1 with 72.2% theoretical yield was obtained.

발행연도

2011

발행기관

Elsevier Applied Science

ISSN

0960-8524

권

102

호

페이지

pp.3014-3019

DOI