Model prediction and mechanism analysis of PPCPs abatement in secondary effluent by heterogeneous catalytic ozonation: A case study with MnO2-Co3O4 depends on DOM concentration

•PPCPs abatement by heterogeneous catalytic ozonation could be well predicted by kinetic model.•Model prediction would further guide the application of heterogeneous catalytic ozonation.•MnO2-Co3O4 catalyst mainly enhanced O3-resistant and moderately O3-reactive PPCPs removal by OH.•MnO2-Co3O4 catalyst could also accelerate O3-reactive PPCPs removal by improving O3 exposure.•A positive correlation between hydrophobicity of PPCPs and reaction kinetics of OH was proposed.