Efficient PFAS Removal by Amine-Functionalized Sorbents: Critical Review of the Current Literature,Environmental Science & Technology Letters

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Efficient PFAS Removal by Amine-Functionalized Sorbents: Critical Review of the Current Literature
Environmental Science & Technology Letters ( IF 8.9 ) Pub Date : 2019-11-26 , DOI: 10.1021/acs.estlett.9b00659
Mohamed Ateia _{1,

2} , Alaaeddin Alsbaiee ₃ , Tanju Karanfil ₁ , William Dichtel ₂

Affiliation

Perfluoroalkyl and polyfluoroalkyl substances (PFAS) are a group of persistent and mobile fluoro-organic chemicals that have been detected in many water supplies, and their recommended safe concentrations in drinking water are as low as 6 ng/L. Current technological advances suggest that amine-containing sorbents can provide alternative solutions to PFAS control in the treatment of municipal water and wastewater at relatively low PFAS concentrations. The objective of this review is to provide critical analysis of the development and application of amine-containing sorbents for PFAS removal. The removal of PFAS by aminated sorbents relies on the combined effects of three main factors: (i) electrostatic interactions with functional groups of the sorbent, (ii) hydrophobic interactions with the sorbent and between PFAS molecules, and (iii) sorbent morphology. The design of next-generation sorbents should take into consideration these three factors and their relative contribution. We also provide an outlook and highlight of the key areas of innovative research needs to develop more efficient sorbents that will enable compliance with the increasingly stringent regulations of PFAS.

中文翻译：

胺功能性吸附剂有效去除PFAS：对当前文献的批判性评论

全氟烷基和多氟烷基物质（PFAS）是在许多供水中检测到的一组持久性和移动性氟有机化学品，其推荐的饮用水安全浓度低至6 ng / L。当前的技术进步表明，在相对较低的PFAS浓度下，含胺的吸附剂可以为PFAS控制提供替代解决方案，用于处理市政供水和废水。这篇综述的目的是对用于PFAS去除的含胺吸附剂的开发和应用提供重要的分析。胺化吸附剂对PFAS的去除取决于综合效果三个主要因素：（i）与吸附剂官能团的静电相互作用，（ii）与吸附剂之间以及PFAS分子之间的疏水相互作用，以及（iii）吸附剂形态。下一代吸附剂的设计应考虑这三个因素及其相对作用。我们还将展望并重点介绍创新研究的关键领域，以开发更高效的吸附剂，使之符合PFAS日益严格的规定。

更新日期：2019-11-28

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