Determination of the ozone volumetric mass transfer coefficient in bubble column with two-fluid nozzle gas distributor

Abstract

Experimental investigation of gas-liquid mass transfer of ozone in water, in bubble column with two-fluid nozzle gas distributor (BKDM), under different operating conditions, are presented in this work. The main objective was to determine the ozone volumetric mass transfer coefficient, kL a, in calm uniform section of the column, under different values of gas and liquid flow rates. Obtained values of these coefficients were compared with the values in countercurrent bubble column. The critical liquid flowrate, when gas hold up reaches its maximum, was experimentally determined. It was shown that the maximum value of the ozone volumetric mass transfer coefficient is obtained just when liquid flowrate is at its critical value. [Projekat Ministarstva nauke Republike Srbije, br. 172022]

Keywords

• ozone volumetric mass transfer coefficient
• bubble column with two-fluid nozzle gas distributor