Recent Progress in Using Peroxymonosulfate for the Treatment of Organic Wastewater – A Brief Review

In recent years, peroxymonosulfate advanced oxidation processes (PMS-AOPs) have become an attractive method for the treatment of refractory organic wastewater, relying on their ability to generate highly oxidizing active species (SO4·-, ·OH, and 1O2, etc.). In this review, the characteristics of PMS-AOPs are firstly introduced, followed by a systematic introduction of peroxymonosulfate (PMS) activation methods, including energy-assisted activation, metal-based material activation, carbon-based material activation, and composite system activation. Subsequently, the effects of critical parameters (wastewater pH, reaction temperature, PMS dosage, catalyst loading, inorganic ions and natural organic matter, and reaction time) on the performance of PMS-AOPs were discussed. Furthermore, the working mechanisms of PMS in PMS-AOPs were proposed, and finally, potential research directions in the near future were suggested. This review provides fundamental analysis and discussion of PMS-AOPs in the treatment of refractory organic wastewater.