过硫酸盐缓释材料制备与原位化学修复应用的关键问题

Key Issues in Preparation of Persulfate Sustained-release Materials and Application of In-situ Chemical Remediation

原位化学氧化修复技术对地下水有机污染修复具有较好的适应性,过硫酸盐结合缓释技术可控制氧化剂的释放,持续发挥过硫酸盐的氧化活性,是原位氧化的功能性修复材料的研究热点。通过从多学科角度对过硫酸盐缓释材料的缓释过程和作用机理进行综述,总结了多类别过硫酸盐缓释材料的材料性能与制备方法,概括了全球主流的过硫酸盐缓释材料综合性能与影响因素的评估模型及过硫酸盐缓释材料在地下水有机污染修复中的研究进展,并对硫酸盐缓释材料未来的研究方向和关键问题进行展望,旨在促进原位化学氧化修复技术的应用与发展。

In-situ chemical oxidation remediation technology has good adaptability to groundwater organic pollution remediation. Persulfate combined with slow-release technology can control the release of oxidants and continuously exert the oxidative activity of persulfate,which is a research hotspot of functional repair materials for in-situ oxidation.We reviewed the sustained-release process and action mechanism of persulfate sustained-release materials from a multidisciplinary perspective, and systematically summarized the material properties and preparation methods of various persulfate sustainedrelease materials. The comprehensive performance evaluation model and influencing factors of the global mainstream persulfate sustained-release materials are summarized. The research progress of persulfate slow-release materials in the remediation of groundwater organic pollution is reviewed, and the future research directions and key issues of sulfate slowrelease materials are prospected, aiming to promote the application and development of in-situ chemical oxidation remediation technology.