Perfluorooctanoic acid (PFOA) is a perfluorocarboxylic acid that is difficult to treat by most conventional methods. As a result, it is often removed from solution by adsorption on powdered activated carbon (PAC), followed by incineration of the spent carbon. To provide a new approach for treatment, PFOA was exposed to sulfate radicals (SO4(-•)) produced by thermolysis of persulfate (S2O8(2-)) ...

The aqueous radical homopolymerization of vinylidene fluoride (VDF), as well its copolymerizations with hexafluoropropylene (HFP) or perfluoromethyl vinyl ether (PMVE), and terpolymerization HFP PMVE, initiated by trifluoromethyl radicals (•CF3), generated from the ammonium persulfate (APS) potassium sulfinate (CF3SO2K) redox system are presented. optimization experimental conditions in terms i...

Biochar (BC) supported nanoscale zerovalent iron (nZVI) composite was synthesized and used as an activator for persulfate to enhance the trichloroethylene (TCE) removal in aqueous solutions. The degradation efficiency of TCE (0.15mmolL(-1)) was 99.4% in the presence of nZVI/BC (4.5mmolL(-1), nZVI to BC mass ratio was 1:5) and persulfate (4.5mmolL(-1)) within 5min, which was significantly higher...

The extensive use of pharmaceuticals and personal care products (PPCPs) causes high concentrations pharmaceutical metabolites to exist in aquatic environments. Though the removal parent PPCPs has raised concerns, degradation was rarely investigated. In this study, 4-acetylaminoantipyrine (4-AAA), a typical dipyrone metabolite frequently detected worldwide surface water wastewater, initially stu...