过硫酸盐不同活化方式的研究进展

Research Progress on Different Activation Methods of Persulfate

过硫酸盐高级氧化技术是一种利用硫酸根自由基(SO4-·)处理水中难降解有机物的新型处理技术。该技术因具有经济适用、安全稳定、环境友好、处理效果显著等特点受到了越来越多的关注。过硫酸盐在不同的活化反应条件(紫外光、温度、过渡金属离子、合成生物炭基材料、超声波)下能够产生强氧化性的硫酸根。通过剖析新型高级氧化技术的反应机理、综述PS活化的不同方式及其影响因素,提出了现有研究中存在的问题及后期值得加强的研究方向,旨在为过硫酸盐氧化技术进一步发展和大规模应用探索出路。

Persulfate advanced oxidation process is a new type of treatment technology that uses sulfate radicals(SO4-·)to treat refractory organics in water.This process has attracted more and more attention because of its economic,safe and stable,environmentally friendly,significant treatment effect and other characteristics.Persulfate can generate strong oxidizing sulfate under different activation reaction conditions(ultraviolet light,temperature,transition metal ions,synthetic biochar-based materials and ultrasound).This paper analyzes the reaction mechanism of the new advanced oxidation process,summarizes the different ways of PS activation and its influencing factors,and puts forward the problems in the existing research and the research directions that need to be further strengthened in the later period.The aim is to explore a way for the further development and large-scale application of persulfate oxidation process.