通过纳米塑料介导的界面过程控制了前向透中 perfluorooctanoic 酸的运输
Mengying Yan1, Lijun Meng2, Nan Jiang3
1College of Environmental Science and Engineering, Donghua University, Shanghai 201620, China; Department of Chemical and Biomolecular Engineering, National University of Singapore, 117585, Singapore.
Journal of hazardous materials
|February 12, 2026
概括
前方透 (FO) 膜显示高酸 (PFOA) 去除,但纳米塑料 (NP) 的影响性能. NP污染加剧了PFOA的积累,强调了在废水处理中需要使用防污染策略.
科学领域:
- 环境科学 环境科学
- 化学工程是化学工程的重要组成部分.
- 材料科学 材料科学 材料科学
背景情况:
- 向前透 (FO) 是一种有前途的技术,用于去除和多基物质 (PFAS).
- 污染水通常含有PFAS和微/纳米塑料 (NP),但它们对FO膜性能的联合影响尚不清楚.
- 了解这些相互作用对于有效的废水处理至关重要.
研究的目的:
- 通过使用改性FO膜,研究纳米塑料 (NP) 对 perfluorooctanoic acid (PFOA) 的排斥和运输的影响.
- 评估各种操作条件和NP表面化学物质对PFOA去除的影响.
- 提供关于PFAS和NP在FO过中的双重作用的见解.
主要方法:
- 一个UiO-66-NH2修饰的抗 FO膜的制造.
- 在不同的膜方向,料pH值,抽液盐度和共存的PFAS物种下评估PFOA去除.
- 在存在不同表面化学成分的聚乙烯基NP (PS,PS-NH2,PS-COOH) 时评估PFOA排斥.
- 对NP相关的污染影响对外部度极化和PFOA积累的分析.
主要成果:
- 修改后的FO膜表现出高的PFOA排斥效率,性条件增强,但由于高吸水溶液盐度而降低.
- 与共存的PFAS物种的竞争性相互作用影响了在膜接口的PFOA排斥.
- 纳米塑料污染加剧了外在度极化和膜附近的PFOA积累,其影响取决于NP表面化学 (例如PS-NH2的静电吸引力).
结论:
- 纳米塑料在FO过过程中显著影响PFAS运输,影响复杂水矩阵中的质量转移行为.
- NP 的表面化学在污染和 PFOA 积累的程度上发挥着关键作用.
- 通过防膜设计减轻蛋糕增强的极化对于优化废水处理中的FO性能至关重要.
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