Abstract
Liquid-phase volumetric oxygen transfer coefficients were evaluated in a bubble column containing yeast suspensions, using the instationary oxygen absorption method and a polarographic oxygen electrode. The electrode time lag was found to be independent of both the system studied and the operating conditions. The volumetric oxygen mass transfer coefficients k L a could be reasonably predicted by calculating k L from the equation derived by Bhavaraju et al. or the empirical equation of Calderbank and Moo-Young and “a” from the experimental gas hold-up values.
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