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胺功能化凝用于从水中增强选择性去除阴离子pfas

Kaixing Fu¹, Fang Luo¹, Zhuoya Fang¹

¹State Key Laboratory of Green Papermaking and Resource Recycling, School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai, P.R. China.

Nature communications

|November 19, 2025

概括

一种新型的胺双部位水凝 (QFgel) 有效地从水中去除和多基物质 (PFAS). 这种具有成本效益的QFgel提供了高选择性和PFAS整治能力,推进了水保护标准.

科学领域:

环境化学环境化学
材料科学材料科学材料科学
水处理技术水处理技术

背景情况:

和多基基物质 (PFAS) 构成重大环境和健康风险.
迫切需要有效和负担得起的方法来从水中去除PFAS,以满足监管标准.
现有的水处理技术往往难以完全去除各种PFAS化合物.

研究的目的:

开发一种新型的水凝材料,用于从污染水中选择性和有效地去除PFAS.
为了研究水凝与PFAS分子的协同相互作用机制.
评估开发的水凝在试点应用中的性能,并评估其再生能力.

主要方法:

合成具有四元化和化功能组的胺双位体凝 (QFgel).
描述QFgel与两性PFAS分子的结构兼容性.
在真实水矩阵中进行吸附实验,以确定各种PFAS类型的选择性和容量.
试点测试QFgel吸附器用于连续处理PFAS污染的饮用水.
使用盐酸甲醇化剂进行再生研究,以评估可重复使用性和PFAS丰富性.

主要成果:

对于17种PFAS (高达2835mg/g),QFgel具有很高的选择性和超高的吸附能力.
在实际水中的环境相关度下,实现了超过95.6%的PFAS去除.
在试点规模的测试中,在突破之前处理了超过12,400个被污染的自来水.
再生实现了96.5%的脱吸和1,633倍的PFAS丰富,减少了化剂的使用.
证明QFgel有效地去除了 perfluorooctanesulfonic 酸 (PFOS) 和 perfluorooctanoic 酸 (PFOA) 的作用.

结论:

胺双部位水凝 (QFgel) 为PFAS整治提供了一个高度有效和选择性的解决方案.
QFgel提供了一种可扩展和具有成本效益的方法来处理PFAS污染的水,包括饮用水.
材料的再生能力和高的PFAS丰富系数有助于可持续的水资源保护.

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