The effects of column dimensions, gas velocity and the properties of liquid and solid particles on the gas holdup s6 and the volumetric liquid-phase mass transfer coefficient kLain the solid-suspended bubble columnof liquid-solid batch operation were studied experimentally. The presence of suspended solid particles in the bubble column reduces values of sG and kLa, and their reduction by an addition of solid particles to the column is high in the transition regime and low in the heterogeneous flow regime. Based on these observations, empirical equations for % in transition flow and in heterogeneous flow, and an empirical equation for kLa a applicable to the above two flow regimes are proposed.
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