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

摘要: High butanol accumulation is due to feedback inhibition which leads the low productivity observed in acetone-butanol-ethanol (ABE) fermentation. The aim of this study use biodiesel as an extractant for situ removal from broth. results indicate that adding at beginning fermentation significantly enhances production. No significant toxicity on growth Clostridium acetobutylicum observed. In fed-batch operation with glucose feeding, maximum total obtained 31.44 g/L, compared control batch (without addition biodiesel) 9.85 g/L. Moreover, 0.295 g/L h fed-batch, higher than 0.185 batch. by has great potential commercial ABE