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The performance of a batch conical air spouting vessel for conducting ion exchange reactions involving heavy metal removal has been investigated. The performance was measured in terms of volumetric mass transfer coefficient (K). The effect of various parameters such as type of heavy metal ion (Ni2+, Pb2+), superficial air velocity and initial heavy metal concentration has been investigated. It has been found that volumetric mass transfer coefficient increases as air superficial velocity increases. Initial Ni+2 concentrations have two opposing effects on the volumetric mass transfer coefficient, whereas initial Pb+2 concentrations have negligible effect. Dimensional analysis of the present mass transfer data led to the following correlations:
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