OPTIMAL OPERATING-CONDITIONS FOR LAB-SCALE OZONATION REACTORS

A method for the assessment of the optimal operating conditions for a mechanically stirred gas-liquid reactor is presented. The method explo its both fluid dynamic and chemical information. First, the behavior o f the specific stirring power as a function of the stirrer speed allow s singling out the dispersion region, in which the most efficient gas- liquid mass transfer is achieved. Inside this region, the analysis of experimental data obtained when considering a chemical system reacting at moderate Hatta numbers (i.e., Ha < about 2) allows determination o f the rate constants and the fluid dynamic parameters (i.e., the mass transfer coefficient in the absence of chemical reaction and the chara cteristic diffusion time).