聚甲基物质的功能组对其通过纳米过去除的作用
Takahiro Fujioka1, Haruka Takeuchi2, Hironobu Tahara1
1Graduate School of Integrated Science and Technology, Nagasaki University, 1-14 Bunkyo-machi, Nagasaki 852-8521, Japan.
Water research X
|August 5, 2024
概括
浸水纳米过 (NF) 有效地从水中去除多基物质 (PFAS). 排斥率取决于PFAS的大小和电荷,较小或充电的分子显示出更高的去除效率.
科学领域:
- 环境科学 环境科学
- 水处理技术水处理技术
- 分析化学 分析化学
背景情况:
- 引起新兴关注的污染物 (CEC),包括多基基物质 (PFAS) 和药品和个人护理产品 (PPCP),对饮用水安全构成风险.
- 纳米过 (NF) 是一个有前途的技术来去除这些CEC.
研究的目的:
- 调查影响使用潜水NF去除九种主要PFAS的因素.
- 推断PPCP去除的结果,以了解NF中的PFAS行为.
主要方法:
- 使用聚皮帕拉胺 (NF270) 膜对超过大水进行潜水NF处理.
- 在低透流量 (5 L/m2 h) 分析了九种PFAS的排斥.
- 与分子尺寸,功能组和电荷相关的PFAS排斥.
主要成果:
- 随着PFAS分子尺寸的增加,PFAS排斥率从71%增加到94%.
- 含有碳酸基的PFAS被更有效地排斥,而不是含有硫基的PFAS.
- 负电荷的PFAS和PPCP的排斥率高于未充电或正电荷的化合物.
结论:
- NF膜的PFAS排斥受分子大小,膜孔径和静电相互作用之间的相互作用的影响.
- 沉浸的NF显示出PFAS去除的高潜力,但流量率可能会影响排斥变化.
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