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Tower fermentation using Zymomonas mobilis for ethanol production

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Summary

Flocculation was induced in a pure strain of the bacteria Zymomonas mobilis. When fermenting glucose to ethanol, cell densities of up to 40g/l were achieved and sustained in a 0.92 litre tower fermenter with dilution rates of up to 2.3 hr-1. A maximum productivity of 100g EtOH/l/hr with 98% conversion of the 105g/l glucose feed was achieved. The limitation to performance with increase in throughput arose from incomplete fermentation of the feed glucose, rather than washout of the flocculated bacteria.

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Authors and Affiliations

  1. Department of Chemical Engineering, The University of Sydney, 2006, Sydney, N.S.W., Australia

    I. G. Prince & J. P. Barford

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  1. I. G. Prince
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  2. J. P. Barford
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Prince, I.G., Barford, J.P. Tower fermentation using Zymomonas mobilis for ethanol production . Biotechnol Lett 4, 525–530 (1982). https://doi.org/10.1007/BF00131576

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