A kinetic model for high‐gravity intensified Fe‐ MnO X / AC ‐catalyzed ozonation of phenol: Direct and indirect reaction

Abstract In this study, an apparent reaction kinetic model is established for high‐gravity intensified Fe‐MnO X /AC‐catalyzed ozonation of phenol in a rotating packed bed (PRB). It is found that this model can accurately predict the removal rate of phenol, with the deviations between experimental and theoretical values being less than 8%. The rate constants of the direct reaction of ozone and the indirect reaction of ·OH and the parameter R CT are obtained, based on which their contributions to the removal of phenol can be more accurately estimated. The contribution factor is 77.5% for the direct reaction ( f O 3 ) and 22.5% for the indirect reaction ( f •OH ), respectively. This study provides a feasible method to establish the kinetic model for heterogeneous catalytic ozonation of organic matter, as well as new insights into the direct and indirect reaction mechanism of ozone with phenol.