Chemocatalytic ceramic membranes for removing organic pollutants in wastewater: a review

Abstract

Catalytic ceramic membranes display synergistic functions of catalytic oxidation and membrane filtration. In the current work, a comprehensive review on chemocatalytic ceramic membranes (CCCMs) applied in the field of removing organic pollutants from wastewater is presented. This work provides a first-time review focusing solely on the CCCMs in wastewater treatment. The structures and fabrication technologies of the CCCMs are described firstly, where six configurations and three technical approaches have been summarized. Next, four systems of CCCM, i.e., catalytic ozonation ceramic membrane (COCM), Fenton/catalytic wet peroxide oxidation ceramic membrane (F/CWPOCM), catalytic wet air oxidation ceramic membrane (CWAOCM) and catalytic persulfate oxidation ceramic membrane (CPOCM), are interpreted in terms of constitution elements, operation parameters and performance indicators. Then, the applications of these four systems are analyzed and discussed, in which the recent over 10-year work progress on CCCMs for pollutant removal is summarized. The prospects and concluding remarks on the CCCMs are presented lastly.