Abstract
Several characteristics that involve the gas/liquid flow pattern, the mixing time and the ozone utilization rate of a modified gas-induced ozonator were studied. In such an ozonator, four narrower baffles having a width 1/25 of the vessel diameter and two in-series 45° downward pitched blade turbines (PBTs) were employed. At high impeller speeds, the gas induction enhanced the gas-liquid utilization. A model heterogeneous ozonation of the C.I. Reactive Blue 19 dye (RB19) was conducted to examine the effect of various operational parameters. Results concluded that the modified gas-induced ozonator provides high ozone utilization rate under stable gas induction and proper inlet gas flow rate. In addition, a comparison between the present ozonator and other gas inducing reactors in the literature was also made.
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