Kinetics of the Reaction Between Ozone and Cationic Red X-GRL

Abstract

Abstract: The ozonation of Cationic Red X-GRL in a semi-batch reactor was studied with variation of
the gas flowrate, initial Cationic Red X-GRL concentration, temperature, and pH value. By
the evaluation of the liquid masstransfer coefficient, the interfacial area, and the
stoichiometric ratio between ozone and Cationic Red X-GRL, therate constants and the
kinetic regime of the reaction between ozone and Cationic Red X-GRL were investigated
byapplying the experimental data to a model based on the film mass transfer theory. The
results obtained support asecond order overall reaction, first order with respect to both
ozone and dye, and the rate constants were correlatedby a modified Arrhenius Equation of
temperature and pH value with activation energy of 18.06kJ@mol-1. Hattanumber of the
reaction was found to be between 0.026 and 0.041, it indicates that the reaction occurs in
the liquidbulk, corresponding to the slow kinetic regime.

Key words: ozonation, Cationic Red X-GRL, reaction kinetics, dye, mass transfer

摘要： The ozonation of Cationic Red X-GRL in a semi-batch reactor was studied with variation of
the gas flowrate, initial Cationic Red X-GRL concentration, temperature, and pH value. By
the evaluation of the liquid masstransfer coefficient, the interfacial area, and the
stoichiometric ratio between ozone and Cationic Red X-GRL, therate constants and the
kinetic regime of the reaction between ozone and Cationic Red X-GRL were investigated
byapplying the experimental data to a model based on the film mass transfer theory. The
results obtained support asecond order overall reaction, first order with respect to both
ozone and dye, and the rate constants were correlatedby a modified Arrhenius Equation of
temperature and pH value with activation energy of 18.06kJ@mol-1. Hattanumber of the
reaction was found to be between 0.026 and 0.041, it indicates that the reaction occurs in
the liquidbulk, corresponding to the slow kinetic regime.

关键词: ozonation;Cationic Red X-GRL;reaction kinetics;dye;mass transfer

ZHAO Weirong, SHI Huixiang, WANG Dahui. Kinetics of the Reaction Between Ozone and Cationic Red X-GRL[J]. .

赵伟荣, 史惠祥, 汪大翚. 臭氧氧化阳离子红染料的动力学研究[J]. CIESC Journal.

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