Optimization of Process Parameters for Ethanol Production from Alkaline-Pretreated Wheat Straw by Fed-Batch Simultaneous Saccharification and Fermentation

Abstract:

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The alkaline-pretreated wheat straw was used as raw materials, and the fed-batch simultaneous saccharification and fermentation (SSF) process for ethanol production with higher substrate loading (up to 16% (w/v)) was investigated. Firstly, the Fed-batch SSF with different feeding strategy was optimized. The highest ethanol concentration reached to 37.9 g/L with an initial substrate loading of 10% (w/v), and equal substrate addition (3%) at 8h and 16h respectively. Then the effects of Tween-20 were also investigated. The results showed that Tween-20 addition with 2.0 g/L can improved the ethanol production. Furthermore, a nonisothermal fed-batch SSF was proposed, and the ethanol concentration of 41.5 g/L, corresponds to 81.0 % of the theoretical yield was achieved within 72 h.

Info:

Periodical:

Advanced Materials Research (Volumes 236-238)

Edited by:

Zhong Cao, Yinghe He, Lixian Sun and Xueqiang Cao

Pages:

922-925

DOI:

10.4028/www.scientific.net/AMR.236-238.922

Citation:

C. Chang et al., "Optimization of Process Parameters for Ethanol Production from Alkaline-Pretreated Wheat Straw by Fed-Batch Simultaneous Saccharification and Fermentation", Advanced Materials Research, Vols. 236-238, pp. 922-925, 2011

Online since:

May 2011

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Price:

$35.00

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