Functionalized bio‐adsorbents for removal of perfluoroalkyl substances: A perspective
Functionalized bio‐adsorbents for removal of perfluoroalkyl substances: A perspective
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DOI：
10.1002/aws2.1258
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发表时间：
2021-11
期刊：
影响因子：
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通讯作者：
D. Li;Kaushik Londhe;Kai Chi;Cheng‐Shiuan Lee;Arjun K. Venkatesan;B. Hsiao
中科院分区：
文献类型：
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作者：
D. Li;Kaushik Londhe;Kai Chi;Cheng‐Shiuan Lee;Arjun K. Venkatesan;B. Hsiao
多氟烷基物质和全氟烷基物质（PFAS）因其在环境中无处不在且持久存在以及对人类健康的负面影响而被称为“永久性化学物质”。其中，短链PFAS由于在水中的高溶解性和迁移性，同时又像长链同类物质一样具有持久性和毒性，受到越来越多的关注。从水中去除PFAS最常见的方法是使用活性炭或离子交换树脂进行吸附，但这些吸附剂对短链PFAS的去除效率有限，且需要频繁更换，导致运营成本较高。在此，我们回顾并讨论了使用生物吸附剂的潜力，这些生物吸附剂可从常见的生物质原料中获取，作为传统吸附剂的低成本替代品，同时这些材料对短链PFAS也能具有良好的去除效率。我们进一步对低成本、活化生物吸附剂系统的设计提出了展望，这些系统可用于有效去除短链PFAS。
Poly‐ and perfluoroalkyl substances (PFAS) are known as “forever chemicals” due to their ubiquitous persistence in the environment, and their negative human health effects. Among them, short‐chain PFAS are of increasing concern due to their high solubility and mobility in water, while possessing persistency and toxicity nature like their longer‐chain analogs. The most common method for PFAS removal from water is by sorption with activated carbons or ion exchange resins, but these adsorbents only exhibit limited removal efficiency against short‐chain PFAS, and they require frequent replacement leading to high operational cost. Here we review and discuss the potential of using bio‐adsorbents, which can be derived from common biomass feedstocks, as low‐cost alternatives to traditional adsorbents, while these materials can also possess good removal efficiency against short‐chain PFAS. We further provide the perspective on the designs of low‐cost, activated bio‐adsorbent systems that can be implemented for effective removal of short‐chain PFAS.