Abstract
We explored the influence of dilution rate and pH in continuous cultures of Clostridium acetobutylicum. A 200-mL fibrous bed bioreactor was used to produce high cell density and butyrate concentrations at pH 5.4 and 35°C. By feeding glucose and butyrate as a cosubstrate, the fermentation was maintained in the solventogenesis phase, and the optimal butanol productivity of 4.6 g/(L h) and a yield of 0.42 g/g were obtained at a dilution rate of 0.9 h-1 and pH 4.3. Compared to the conventional acetone-butanol-ethanol fermentation, the new fermentation process greatly improved butanol yield, making butanol production from corn an attractive alternative to ethanol fermentation.
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Huang, WC., Ramey, D.E., Yang, ST. (2004). Continuous Production of Butanol by Clostridium acetobutylicum Immobilized in a Fibrous Bed Bioreactor. In: Finkelstein, M., McMillan, J.D., Davison, B.H., Evans, B. (eds) Proceedings of the Twenty-Fifth Symposium on Biotechnology for Fuels and Chemicals Held May 4–7, 2003, in Breckenridge, CO. Biotechnology for Fuels and Chemicals. Humana Press, Totowa, NJ. https://doi.org/10.1007/978-1-59259-837-3_72
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DOI: https://doi.org/10.1007/978-1-59259-837-3_72
Publisher Name: Humana Press, Totowa, NJ
Print ISBN: 978-1-4684-9873-8
Online ISBN: 978-1-59259-837-3
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