水和废水处理厂去除全氟和多氟烷基物质:吸附的总体效率和性能

IF 2.5 4区 环境科学与生态学 Q3 ENVIRONMENTAL SCIENCES Environmental Research Communications Pub Date : 2024-09-16 DOI:10.1088/2515-7620/ad75ea
Yaru Peng, Wei Hu and Xi-Zhi Niu
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引用次数: 0

摘要

水环境中的全氟和多氟烷基物质(PFAS)因其有害影响和环境持久性而备受关注。许多研究表明,吸附是一种经济、高效的去除 PFAS 的方法,并开发出了多种吸附剂。然而,很少有吸附剂能方便地应用于实际的污水处理厂或饮用水处理厂。本综述讨论了吸附剂去除 PFAS 的实验室结果与水处理实际效率之间的差距。首先,讨论了传统污水处理厂和 DWTPs 去除 PFAS 的总体性能。其次,比较并总结了污水处理厂处理流程中不同单元对 PFAS 的去除效率。第三,对不同吸附剂(包括活性炭、离子交换树脂、矿物质和金属有机框架)的效率进行了桌面研究。这些研究共同得出的结论是,水中溶解的有机物是影响全氟辛烷磺酸吸收去除的最主要成分;在富含有机物的水中,由于竞争性吸收,全氟辛烷磺酸的去除效果会大打折扣。为获得应用意义,建议将高选择性新型吸附剂的研究与实际示范相结合。随着与 "永远的化学品 "的斗争不断升级,这篇及时而有见地的综述有助于未来的研究工作缩小实验室性能与应用吸附剂实际去除全氟辛烷磺酸之间的差距。
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Per-and polyfluoroalkyl substances removal in water and wastewater treatment plants: overall efficiency and performance of adsorption
Per- and polyfluoroalkyl substances (PFAS) in aqueous environment attracted prodigious attention due to the deleterious effects and environmental persistence. Many studies suggested that adsorption is an economical and efficient method to remove PFAS and a variety of adsorbents were developed. However, few adsorbents were conveniently applicable in real wastewater treatment plants (WWTPs) or drinking water treatment plants (DWTPs). This review discusses the gap between laboratory results of PFAS removal by adsorbents and the realistic efficiency in water treatment. First, the overall performance of PFAS removal by conventional WWTPs and DWTPs was discussed. Second, PFAS removal efficiencies by different units along the treatment trains of DWTPs were compared and summarized. Third, benchtop results for the efficiency of different adsorbents including activated carbon, ion exchange resin, minerals, and metal–organic frameworks were reviewed. These studies collectively concluded that dissolved organic matter in water is the most consequential component influencing the absorptive removal of PFAS; PFAS removal efficacy was discounted in water enriched in organic matter due to competitive absorption. To obtain application implications, research on novel adsorbents of high selectivity is suggested to couple with realistic demonstration. As the battle with ‘forever chemicals’ escalates, this is a timely and insightful review to help future research efforts bridge the gaps between laboratory performance and realistic removal of PFAS applying adsorbents.
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来源期刊
Environmental Research Communications
Environmental Research Communications ENVIRONMENTAL SCIENCES-
CiteScore
3.50
自引率
0.00%
发文量
136
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