Oxidation of tri- and perchloroethene in aqueous solution with ozone and hydrogen peroxide in a tube reactor

The reaction between trichloroethene (TCE) and perchloroethene (PCE) as micropollutants in water with ozone and hydrogen peroxide has been studied in a tube reactor. During the course of the reaction the micropollutants were nearly completely mineralized, as indicated by a stoichiometrical release of the organic chlorine as chloride ions. A mathematical model describing the kinetics of the oxidation was developed based on known reactions of the ozone/hydrogen peroxide system. Experiments with demineralized water that was spiked with bicarbonate and with drinking water have shown that the model is sufficient to predict the concentration profiles of the pollutants, ozone and hydrogen peroxide at different pH values and inorganic carbon concentrations.