Publication Details

Sidhu, H. S., Watt, S. D., Nelson, M. I. & Ray, A. K. (2010). Analysis of a model for ethanol production through continuous fermentation: ethanol productivity. International Journal of Chemical Reactor Engineering, 8 1-17.


We investigate a model for the production of ethanol through continuous fermentation using Saccharomyces cerevisiae in a single reactor and cascades of up to five reactors. Using path-following methods we investigate how the ethanol productivity varies with the residence time in each reactor of the cascade. With a substrate feed concentration of 160 g/l we find the optimal productivity is 3.80 g/l/h, 5.08 g/l/h, and 5.18 g/l/h in a single reactor, a double reactor cascade and a triple reactor cascade respectively. For the case of a cascade containing reactors of equal size we investigate reactor configurations of up to five reactors and find that the maximum productivity is obtained in a cascade containing three reactors.



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