Acetone-Butanol-Ethanol (ABE) Production in Fermentation of Enzymatically Hydrolyzed Cassava Flour by Clostridium beijerinckii BA101 and Solvent Separation
분야
자연과학 > 생물
저자
( Leonardo Lepiz Aguilar ) , ( Carlos E Rodriguez Rodriguez ) , ( Maria Laura Arias ) , ( Giselle Lutz )
발행기관
한국미생물생명공학회(구 한국산업미생물학회)
간행물정보
Journal of Microbiology and Biotechnology 2013년, 제23권 제8호, 1092~1098페이지(총7페이지)
파일형식
05212328.pdf [무료 PDF 뷰어 다운로드]
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    영문초록
    Cassava constitutes an abundant substrate in tropical regions. The production of butanol in ABE fermentation by Clostridium beijerinckii BA101 using cassava flour (CF) was scaled-up to bioreactor level (5 L). Optimized fermentation conditions were applied; that is, 40oC, 60 g/l CF, and enzymatic pretreatment of the substrate. The batch fermentation profile presented an acidogenic phase for the first 24 h and a solventogenic phase afterwards. An average of 37.01 g/l ABE was produced after 83 h, with a productivity of 0.446 g/l/h. Butanol production was 25.71 g/l with a productivity of 0.310 g/l/h, high or similar to analogous batch processes described for other substrates. Solvent separation by different combinations of fractioned and azeotropic distillation and liquid-liquid separation were assessed to evaluate energetic and economic costs in downstream processing. Results suggest that the use of cassava as a substrate in ABE fermentation could be a cost-effective way of producing butanol in tropical regions.
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