关键词: 过硫酸盐, 能量, 催化剂, 活化, 氧化, 降解, 酚类污染物

Abstract:

The degradation of phenolic pollutants by activated persulfate (PS) has attracted much attention due to its economical, efficient, environmentally friendly, safe and stable advantages. Presently, there are two main activated methods for PS such as external energy and catalyst activation. The single external energy activation for PS which contains heat, light, ultrasound, electrode and plasma activation, etc. exhausts more energy but gains poor degradation effect of phenolic pollutants. More and more researchers begin to focus on external catalyst activation of PS owing to its little environmental pollution, low operation cost and high degradation efficiency. In order to increase the degradation efficiency of phenolic pollutants, different activation methods of PS gradually have mixed together and they finally have brought about hybrid technologies such as combination of carbon materials and transition metals, combination of electrode and transition metals, and combination of light and catalysts. The research progress on degradation of phenolic pollutants by activated PS were reviewed systematically. Then, the influencing factors of activated PS were sketched. Furthermore, the existing problems of degradation of phenolic pollutants by activated PS were analyzed. Finally, the development trends of degradation of phenolic pollutants by activated PS were forecasted.

Key words: persulfate, energy, catalyst, activation, oxidation, degradation, phenolic pollutants