The enhancement of butanol production by in situ butanol removal using biodiesel extraction in the fermentation of ABE (acetone-butanol-ethanol)

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题名:	The enhancement of butanol production by in situ butanol removal using biodiesel extraction in the fermentation of ABE (acetone-butanol-ethanol)
作者:	Yen, H.-W. , Wang, Y.-C
贡献者:	Department of Chemical and Materials Engineering, Tunghai University
关键词:	ABE;Biodiesel;Extraction;In situ removal;Separation
日期:	2012
上传时间:	2013-05-21T09:10:08Z (UTC)
摘要:	High butanol accumulation is due to feedback inhibition which leads to the low butanol productivity observed in acetone-butanol-ethanol (ABE) fermentation. The aim of this study is to use biodiesel as an extractant for the in situ removal of butanol from the broth. The results indicate that adding biodiesel as an extractant at the beginning of fermentation significantly enhances butanol production. No significant toxicity of biodiesel on the growth of Clostridium acetobutylicum is observed. In the fed-batch operation with glucose feeding, the maximum total butanol obtained is 31.44 g/L, as compared to the control batch (without the addition of biodiesel) at 9.85 g/L. Moreover, the productivity obtained is 0.295 g/L h in the fed-batch, which is higher than that of 0.185 g/L h for the control batch. The in situ butanol removal by the addition of biodiesel has great potential for commercial ABE production. ? 2012 Elsevier Ltd. All rights reserved.
關聯:	Bioresource Technology 2012
显示于类别:	[化學工程與材料工程學系所] 期刊論文

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