The Remediation of Organic Pollution in Soil by Persulfate

In recent years, organic pollution in soil has become more serious, thus timely treatment is particularly important. Persulfate technology has a good treatment effect in reducing soil organic pollutants. Analyzing the feasibility and prospects of the applications of persulfate technology in soil organic pollution is conducive to the development of soil remediation. The activation method of persulfate treatment of soil organic pollutants is as follows: thermal activation, microwave activation, ultrasound activation, alkali activation, material activation, electroactivation and photoactivation. The influencing factors of persulfate treatment of soil organic pollutants are as follows: coexisting substance effects, persulfate initial concentrations, treatment time, soil temperature, soil pH value and soil moisture content. Persulfate technology can effectively deal with the problem of organic pollution in soil, which can be developed in the following aspects: (i) Coupling different persulfate activation technologies; (ii) Applicating activated persulfate with non-metallic activated materials in soil remediation; (iii) Coupling different soil remediation technologies with persulfate; (iv) Preparating persulfate sustained-release materials for soil remediation. This work provides a reference for those who are concerned about the field of remediation of organic pollution in soil by persulfate.

Graphical Abstract