With the development of industry, there is an increasing focus on environmental issues, while organic micro-pollutants (OMPs) have garnered significant attention as emerging contaminants in water. Due to the low concentration and small size, OMPs pose a challenge to retain in tra
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With the development of industry, there is an increasing focus on environmental issues, while organic micro-pollutants (OMPs) have garnered significant attention as emerging contaminants in water. Due to the low concentration and small size, OMPs pose a challenge to retain in traditional low-pressure membrane filtration systems. Prior researches found that membrane coupled advance oxidation processes (AOPs) could effectively degrade OMPs. However, membrane fouling caused by natural organic matter still remains an issue. In this study, the feasibility of simultaneous OMPs removal and fouling mitigation was validated in such a membrane coupled AOPs system, where the peroxymonosulfate (PMS) worked as the oxidants and palladium was immobilized on the ceramic ultrafiltration membrane surface to activate the PMS. In a continuous four-cycle experiment, the Pd-coated membrane maintained over 60% removal for 4 OMPs and improved the hydraulic clean efficiency significantly. Furthermore, the factors related to experimental conditions were also explored. The research
found that OMP removal rates were reduced by fouling due to the competitive effect of PMS. Take Trimethoprim as an example, its kinetics constant decreased from 22.491 to 0.916 s−1. PMS dosage also played an important role in both fouling alleviation and OMP removal. The improved performances were observed with increasing PMS dosage.