MEMBRANE EXTRACTIVE BUTANOL PRODUCTION BY IMMOBILIZED Clostridium beijerinckii NCIMB 8052

Title
MEMBRANE EXTRACTIVE BUTANOL PRODUCTION BY IMMOBILIZED Clostridium beijerinckii NCIMB 8052
Authors
조민옥이선미원기훈엄영순상병인
Keywords
butanol production; Clostridium beijerinckii NCIMB 8052; liquid-liquid extraction; oleyl alcohol
Issue Date
2009-03
Publisher
Bioenergy II
Abstract
Biobutanol has many characteristics that make it a better biofuel than bioethanol, now used in the formulation of gasohol. Despite the remarkable advantages of butanol as a fuel, biobutanol production has several limitations, including low values for the yield, productivity, and final product concentration. In this study, we examined the effect of liquid-liquid extraction for the in-situ removal of butanol from fed-batch fermentation broth using Clostridium beijerinckii NCIMB 8052. The production of butanol was stably maintained at 3~4 g/L in the medium during a operation with the liquid-liquid fermentation of butanol. Oleyl alcohol was found to be an efficient solvent for butanol extraction from the culture broth. Continuous extraction of butanol was successfully performed with the liquid-liquid extraction by which direct contact between the solvent and cells. This study showed that butanol productivity and yield can be improved in an integrated process of butanol fermentation with in-situ extraction by maintaining butanol concentration below butanol toxic levels.
URI
http://pubs.kist.re.kr/handle/201004/36848
Appears in Collections:
KIST Publication > Conference Paper
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