Solar-powered Fenton-like catalytic ceramic membrane hybrid system for the advanced water treatment

Abstract

Cu-doped Sm-CeO$_2$) and ceramic membranes were successfully developed by a novel pore-coating method. The hybrid ceramic membrane incorporated with Cu/SDC (Cu/SDC@CM) was successfully mineralized CECs at the neutral pH conditions due to the enhanced conversion of H$_2$O$_2$ into hydroxyl radicals and increased contacts between CECs and hydroxyl radical in the confined pore structures. Moreover, economic analysis verified that the H$_2$O$_2$-Cu/SDC@CM hybrid system can be operated by solar-driven energy for the energy-independent and chemical-free processes, thus, the solar-powered H$_2$O$_2$-Cu/SDC@CM hybrid system will help to supply drinking water in response to various situations where the electricity and water are scarce.

and 4) the conceptual development of the stand-alone, solar-driven, mobile and highly economic water treatment system. In conclusion, the hybrid system of novel catalyst (Cu/SDC

3) the preparation of the catalyst-incorporated ceramic membranes hybrid system based on Fenton-like reaction (Chapter 5)

2) the fabrication of novel heterogeneous Fenton-like catalysts offering excellent catalytic performance under neutral pH conditions (Chapter 4)

1) the investigation of the occurrence and removal of target CECs from major river basins and full-scale WTPs for a case study in South Korea (Chapter 3)

Advanced oxidation processes (AOPs) have been applied to mineralize the contaminants of emerging concerns (CECs) such as plasticizers, pharmaceuticals and personal care products (PPCPs), tastes & odors compounds, etc. Among state-of-art AOP technologies, Fenton-like reactions have been widely applied due to the effective generation of hydroxyl radicals (∙OH) from H$_2$O$_2$ on the surface of a heterogeneous catalyst (Fe), lower chemical expenses, less sludge generation and toxicity, and higher reusability than the classical Fenton reaction system. However, the reaction in acidic (pH 2 ~ 4) conditions with low H$_2$O$_2$ yield still hampered the practical application. Therefore, this dissertation aims