Electrochemical remediation of perfluoroalkyl substances from water
Electrochemical remediation of perfluoroalkyl substances from water
复制标题
水中全氟烷基物质的电化学修复
DOI：
10.1016/j.electacta.2021.139635
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发表时间：
2022
影响因子：
6.6
通讯作者：
Su, Xiao
中科院分区：
文献类型：
--
作者：
Román Santiago, Anaira;Baldaguez Medina, Paola;Su, Xiao
有机人为污染物，如全氟烷基和多氟烷基物质（PFAS），由于其毒性和对当前处理方法的排斥性，对水体和邻近生态系统构成严重威胁。PFAS具有高度稳定的碳-氟键，有助于这些化合物在环境中的持久性。基于膜或吸附材料的常规分离方法在靶向PFAS方面通常效率低下，或者需要大量的能量或化学品消耗来再生。.电化学方法为PFAS的捕获和降解提供了一种可持续的和潜在的节能解决方案，新的电极材料和电化学驱动的过程的快速发展，用于这些化合物的分离和反应。在这里，我们回顾了PFAS去除和降解的电化学方法，包括电吸附和电化学氧化/还原过程。特别是，我们讨论了使用多孔碳电极和功能聚合物的PFAS电吸附，以及用于PFAS脱附，如硼掺杂的金刚石电极的调查。最后，我们对电化学PFAS修复中的新兴课题提出了看法，例如电化学反应和分离的集成以及短链PFAS修复研究的迫切需要。
Organic anthropogenic pollutants such as per- and polyfluorinated alkyl substances (PFAS) present a severe threat to bodies of water and neighboring ecosystems, due to their toxicity and recalcitrance to current treatment methods. PFAS have highly stable carbon-fluorine bonds that contribute to the persistence of these compounds in the environment. Conventional separation methods based on membranes or adsorption materials can often be inefficient at targeting PFAS, or require significant energy or chemical consumption for regeneration. . Electrochemical approaches offer a sustainable and potentially energy-efficient solution to PFAS capture and degradation, with rapid development of new electrode materials and electrochemically-driven processes for the separation and reaction of these compounds. Here, we review electrochemical approaches for PFAS removal and degradation, including electrosorption and electrochemical oxidation/reduction processes. In particular, we discuss investigations using porous carbon electrodes and functional polymers for PFAS electrosorption, as well as electrodes used for PFAS defluorination such as boron-doped diamond. Finally, we present a perspective on emerging topics in electrochemical PFAS remediation, such as the integration of electrochemical reaction and separations, and the urgent need for remediation studies of short-chain PFAS.