Integrated ceramic membrane coupling with CuO@ATT/AC for peroxymonosulfate activation to remove sulfadiazine in water

In this study, a novel ceramic membrane integrating filtration and peroxymonosulfate (PMS) activation was fabricated by loading the compound catalyst (CuO@ATT/AC) into the membrane channels. The integrated ceramic membrane (IM-CuO@ATT/AC) exhibited remarkable efficiency for PMS activation and was applied to the removal of sulfadiazine (SDZ), demonstrating significant performance under various operational conditions. Through the utilization of free radical trapping experiments and electron paramagnetic resonance (EPR) tests, it had been conclusively demonstrated that the predominant reactive species in the IM-CuO@ATT/AC/PMS system were singlet oxygen ( 1 O 2 ) and Cu(III). And the insights into a potential degradation pathway for SDZ was further provided. The IM-CuO@ATT/AC also exhibited enhanced antifouling performance when tested with real water in the presence of PMS. The present study introduces a new strategy to facilitate the advancement of integrated ceramic membrane processes and the utilization of catalytic membrane filtration technology.