Butanol production of Clostridium pasteurianum SE-5 from transesterification reaction solution using fermentation and extraction coupling system

摘要

This study investigates the capability of the Clostridium pasteurianum SE-5 to produce butanol using transesterification reaction solution (TRS) directly,while the crude glyecerol as the sole carbon source and biodiesel as the extractant.The biodiesel: aqueous phase volume ratio (BAPVR) has a significant effect on butanol production.While the BAPVR was adjusted to 1∶1,89.1 g crude glycerol/L was exhausted and 24.6 g butanol/L was produced with more than 50％ of the butanol was extracted into the biodiesel.The results suggested that C.pasteurianum SE-5 could produce butanol from TRS directly using fermentation and extraction coupling system.