通过稳定的纳米过来进行高效的As(III) 清除,以实现可持续的水净化
Xianyu Kang1, Xiangfang Liu2, Qingchun Ge3
1College of Chemical Engineering, Fuzhou University, Fujian 350116, China.
Journal of hazardous materials
|June 6, 2025
概括
抗的纳米过膜有效地去除性水中的. 这一突破通过提高去除效率和膜耐用性来增强水净化,为安全饮用水提供了可扩展的解决方案.
科学领域:
- 材料科学 材料科学 材料科学
- 环境工程 环境工程
- 化学工程是化学工程的重要组成部分.
背景情况:
- 传统的聚胺纳米过 (NF) 膜因其在典型的pH值中处于中性形式,因此难以去除.
- 高pH值通过形成阳离子物种来增强分离,但大多数NF膜在性条件下缺乏稳定性.
研究的目的:
- 开发新的抗性NF膜,以有效地去除在性介质中的.
- 为了提高NF膜的性能和耐用性,用于修复.
主要方法:
- 通过H2SO4/EtOH诱导的物理胀和传统聚胺膜 (PA-M0) 的化学重建,制造抗的NF膜 (PA-M_T).
- 在一系列的料pH值中评估 (III) 除去效率和水流量.
- 在长时间的循环中使用湿酸污染剂评估膜抗污染性质.
主要成果:
- 优化膜 (PA-M_6h) 在pH 10时实现了90.2%的As(III) 排斥,比PA-M0的19.9%有显著的改善,同时保持了17.7 LMH/bar的水流量.
- PA-M_6h表现出异常的抗物性质,维持91.5%的As(III) 排斥和稳定的流量,在与酸的延长周期中保持稳定.
- PA-M_6h的性能超过了传统的NF系统,为清除提供了更有效的解决方案.
结论:
- 开发的抗性NF膜为安全净水提供了可扩展和有效的解决方案.
- 该研究推进了膜设计的分子级接口工程,促进了可持续的分离技术.
- 与现有技术相比,这些新型膜提供了优越的除和防特性.
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