基于硫酸根自由基的活化过硫酸盐新型高级氧化技术研究新进展

Research Progress of Novel Sulfate Radical-Based Advanced Oxidation Process Using Activated Persulfate

基于硫酸根自由基的活化过硫酸盐高级氧化技术近年来受到了广泛的关注,硫酸根自由基有较强的氧化能力并且对难降解有机物具有优异的处理效果。主要对现有过硫酸盐活化技术如热活化、UV活化、金属活化的研究进展进行了阐述,并介绍了新型活化技术如电化学活化、超声活化和碳纳米管活化的最新研究成果。目前,活化过硫酸盐技术仍存在活化效率不高、目标污染物矿化程度较低等问题,同时,由于实际水体的背景有机物较为复杂,氧化过程有可能会生成有害的消毒副产物。

The novel sulfate radical-based advanced oxidation process using activated persulfate has taken extensive attention for its extraordinary efficiency of degradation of recalcitrant organics. This paper introduced current persulfate activation methods like heat activation, UV activation and metal activation, as well as emerging methods including electrochemical activation, ultrasonic activation and carbon nanotube activation. As for the activated persulfate technique, the relatively low activation rate and mineralization efficiency of model compounds remained to be improved at present. Meanwhile, due to the complex background organics, it was likely to generate poisonous disinfection by-products during the persulfate oxidation process.