高级氧化技术去除水中碘代X射线造影剂研究进展

碘代X射线造影剂在医学上的大量使用导致其在水环境中普遍存在,对生态系统和人体健康构成巨大威胁。传统的污水处理技术对碘代X射线造影剂去除效果不佳,应用高级氧化技术去除水中碘代X射线造影剂成为研究热点。本文系统分析了水环境中碘代X射线造影剂的理化性质、来源、危害及污染现状。综述了声化学氧化、光催化、过硫酸盐活化、芬顿和电化学等5种高级氧化技术对碘代X射线造影剂的去除效果、机理及影响因素等,并指出了各自应用优势和限制,最后对高级氧化技术应用于碘代X射线造影剂的研究提出多种单一高级氧化技术协同降解的展望。

Research progress of advanced oxidation technology to remove iodine X-ray contrast media in water

The extensive use of iodinated X-ray contrast media in medicine has led to their widespread presence in water environments,posing a huge threat to the ecosystem and human health.The traditional sewage treatment technology is not effective in removing iodine X-ray contrast agent.The application of advanced oxidation process to remove iodine X-ray contrast media in water has become the core of research.This paper systematically analyzed the physical and chemical properties,source hazards and pollution status of iodinated X-ray contrast media in water environment.The removal effect,mechanism and influencing factors of five advanced oxidation processes,including sonochemical oxidation,photocatalysis,persulfate activation,Fenton and electrochemistry,on iodinated X-ray contrast media were reviewed,and their application advantages and limitations have been pointed out,respectively.At last,it put forward the prospect of synergistic degradation,which was formed by multiple single advanced oxidation processes,for the application of advanced oxidation process on iodinated X-ray contrast media.