活性炭催化过氧化物高级氧化技术降解水中有机污染物

Activated Carbon Catalyzed Peroxide Degradation of Organic Pollutants in Water

活性炭(AC)能够催化过氧化氢(H2O2)释放强氧化性的羟基自由基·OH。过二硫酸盐(PS)与H2O2结构上相似,因此PS也有可能被AC催化产生强氧化性的硫酸根自由基SO4-·。AC催化无机过氧化物(H2O2或PS)将发展成为一类新型的高级氧化技术。AC催化H2O2联合体系包括AC/H2O2,AC/Fenton,AC/H2O2/紫外光,AC/H2O2/微波,AC/湿式H2O2氧化;AC催化PS联合体系包括AC/PS,AC/PS/金属离子,AC/PS/微波。AC/过氧化物联合体系均可高效降解水中有机污染物。本文在首次综述AC/过氧化物联合体系处理有机污染物研究现状的基础上,分析了AC和过氧化物的相互作用,并对该类高级氧化技术的发展前景进行了展望。

H2O2 can obviously be catalyzed by activated carbon （AC） on the AC surface,forming the free radicals of hydroxyl radical （·OH）. As is well known,persulfate （PS） is similar to H2O2 in structure,so PS may be catalyzed by AC too,involving the formation of free radicals of sulfate radical （ SO 4^- ·）. The AC /peroxide （H2O2 or PS） combined system will be an efficient advanced oxidation technology for organic pollutant degradation in water or wastewater. This paper,for the first time,reviews the research progress of the combined system in degrading organic pollutants,including AC /H2O2,AC /Fenton,AC /H2O2 /UV light,AC /H2O2 /microwave,AC / wet H2O2 oxidation,as well as AC /PS,AC /PS /metal ion,and AC /PS / microwave. Both the interaction between AC and peroxide,and the prospects of the AC /peroxide technology are also discussed.