Elimination of Emerging Organic Contaminants in Wastewater by Advanced Oxidation Process Over Iron. Based MOFs and Their Composites

The emergence of emerging organic contaminants(EOCs) has attracted increasing attention due to their wide distribution and persistence in aquatic ecosystems, as well as the potential threat to the health and safety of aquatic organisms. Traditional water treatment processes represented by activated sludge processes are generally insufficient to eliminate these persistent pollutants. For efficient removal of EOCs, advanced oxidation technology based on new materials is one of the most important advanced treatment technologies. Fe-MOFs and their composites have been widely used in many fields, especially in the catalytic oxidation of pollutants in wastewater. With the aid of the improvement of synthesis methods, post-synthetic modification and being composited with specific functional materials, Fe-MOFs can be used to effectively improve the adsorption performance, enhance the light absorption characteristics, and promote the effective separation of charge carriers. The review focuses on the progress of advanced oxidation processes photocatalysis, Fenton-like reaction and sulfate radical (SO4-center dot) mediated oxidation) of Fe-MOFs and their composites to remove emerging organic contaminants in wastewater. As well, the opportunities and challenges of Fe.MOFs in the field of EOCs removal are proposed.