Oxidation of cyanide with ozone was carried out using a semi-continuous bubble column and a continuous bubble column. It was found that the overall reaction rate was strongly controlled by liquid-film mass transfer resistance. The observed rate was satisfactorily explained by the theory of gas absorption with chemical reactions if the intrinsic rate expressions of self-decomposition of ozone and the ozone oxidation of cyanide which had been obtained by the present authors were applied to the theoretical equations. A method for evaluating capacity coefficient of liquid-phase mass transfer from the absorption rate of ozone into water of high pH is also presented.
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Teramoto et al. (1981) studied this question.
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