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• W4313379320 abstract "In this study, the influence of DOM concentration on pharmaceuticals and personal care products (PPCPs) abatement by conventional ozonation and heterogeneous catalytic ozonation with MnO2-Co3O4 catalyst were comparatively investigated. Correspondingly, a kinetic model was proposed to further predict and analyze the abatement of eight PPCPs with kO3 from < 0.1 to 2.5 × 106 M−1·s−1. Results showed that increasing DOM concentration in secondary effluent would considerably inhibit PPCPs abatement during conventional ozonation, but only slightly influence PPCPs abatement with MnO2-Co3O4 catalyst. This could be attributed to the promotion of MnO2-Co3O4 catalyst on O3 exposure (112 %-120 %) and hydroxyl radical (OH) exposure (190 %-740 %), which further enhanced Rct-sec values in catalytic ozonation. Furthermore, both PPCPs abatement in conventional and MnO2-Co3O4 catalytic ozonation could be reasonably predicted by kinetic model based on second-order rate constants and reactive oxygen species exposures under various DOM concentration conditions, providing a possibility to predict PPCPs abatement during heterogeneous catalytic ozonation without considering catalyst adsorption. According to the model, independent of conventional and catalytic ozonation, O3-reactive PPCPs (acetaminophen, acyclovir, carbamazepine, gemfibrozil and sulfamethoxazole) and O3-resistant PPCPs (p-CBA) were removed by O3 and OH under all DOM concentration conditions, respectively. While, with increasing DOM concentration, dominant abatement of moderately O3-reactive PPCPs (bezafibrate and benzotriazole) were changed from OH to O3 in conventional ozonation, but were still OH in catalytic ozonation, further verifying the role of MnO2-Co3O4 catalyst on enhancement abatement of moderately O3-reactive PPCPs. By quantitative structure–activity relationship analysis, a positive correlation between hydrophobicity of PPCPs and reaction kinetics of OH was firstly proposed, which revealed the role of hydrophilicity-hydrophobicity of PPCPs on PPCPs abatement in heterogeneous catalytic ozonation." @default.
• W4313379320 created "2023-01-06" @default.
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• W4313379320 date "2023-01-01" @default.
• W4313379320 modified "2023-10-16" @default.
• W4313379320 title "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" @default.
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• W4313379320 doi "https://doi.org/10.1016/j.cej.2022.140792" @default.
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