水环境中全氟及多氟烷基化合物的吸附去除研究进展

A critical review for removal of per-and polyfluoroalkyl substances in aqueous by adsorption

全氟及多氟烷基化合物(Per-and polyfluoroalkyl substances,PFAS)具有优异的物化性能,在生产和生活的各个领域广泛应用.PFAS普遍具有持久性、生物累积性和潜在生物毒性,长期应用已造成全球范围内水环境的污染.吸附技术作为有效的PFAS处理技术具有成本低、易操作、高效等优势.本文对近年来所报道的各种吸附剂对PFAS的吸附性能以及吸附行为进行了介绍,总结了PFAS在吸附剂上的主要吸附作用及其机理,讨论了几种影响吸附剂吸附性能的主要因素.结合当前水环境中PFAS的吸附去除的进展,浅谈目前所存在挑战,以期为进一步开发更加高效、安全、实用的PFAS吸附去除手段提供参考.

Per-and polyfluoroalkyl substances(PFAS)have been widely used in various fields of industry and daily life due to their excellent physicochemical properties.Because of their general persistence,bioaccumulation and potential bio-toxicity,long-term application of PFAS has resulted in global water contamination.Adsorption technology is an effective PFAS disposal technology,with advantages of low cost,easy operation and high efficiency.In this paper,the adsorption performance and behavior of PFAS on various adsorbents reported in recent years were introduced,primary adsorption effect and underlying mechanisms were concluded,several main factors affecting the adsorption performance of adsorbents were also discussed.By summarizing current research progress,this review has brought up the existing challenges for adsorbing PFAS in aquatic environment,and provided an insight into further development of a more efficient,safe and practical PFAS-adsorbent.