DEVELOPMENT AND APPLICATION OF A GAS-LIQUID CONTACTOR MODEL FOR SIMULATING ADVANCED OXIDATION PROCESSES

Commercial and municipal applications of advanced oxidation processes have preceded a complete understanding of their chemical mechanisms. U nderstanding these processes is difficult because of the large number of chemical species and reactions involved. We developed a flexible an d extensible, mechanistically based model to aid in understanding thes e processes. The model allows for multiple chemical species in each ph ase, multiple chemical reactions among species within each phase, and mass transfer between the gas and aqueous phases. We implemented a spe cific formulation of this model for the case of ozone-hydrogen peroxid e oxidation of trichloroethylene and tetrachloroethylene. This formula tion was used to describe data from a full-scale demonstration plant a nd shown to provide a reasonably accurate representation.