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调节纳米过膜性能:OH-MoS₂纳米板工程和双价离子对污染和有机去除的影响

Deepak Surendhra Mallya¹, Guoliang Yang², Weiwei Lei²

¹School of Engineering, Deakin University, Waurn Ponds, Geelong, VIC, 3216, Australia. dmallya@deakin.edu.au.

|October 23, 2023

概括

工程纳米过 (NF) 膜与OH-MoS2纳米薄膜减少自然有机物 (NOM) 在地表水中的污染. 这通过减轻和离子的影响来改善饮用水的生产.

科学领域:

材料科学材料科学材料科学
环境科学环境科学
化学工程是化学工程的重要组成部分.

背景情况:

表面水中的自然有机物 (NOM) 在纳米过 (NF) 膜中引起了显著的有机污染,阻碍了饮用水的生产.
土金属如 (Ca2+) 和 (Mg2+) 通过与NOM和膜表面相互作用而加剧了这种污染.
开发强大的膜,在这些离子体的存在下抵抗污染,对于有效的水处理至关重要.

研究的目的:

使用OH-功能化二硫化物 (OH-MoS2) 纳米片设计NF膜,以增强NOM去除和减轻污染.
研究OH-MoS2度对膜性质的影响,包括水友性,电荷和形态.
评估工程膜在存在Ca2+和Mg2+时对酸 (HA) 和酸盐 (SA) 的污染缓解性能.

主要方法:

通过界面聚合,将OH-MoS2纳米片纳入NF膜.
优化OH-MoS2度以实现所需的膜特性.
使用纯水透性测试和盐排斥测量进行性能评估.
用HA和SA在不同度的Ca2+和Mg2+下进行污染试验,与对照和商业膜进行基准测试.

主要成果:

一个优化的OH-MoS2度 (0.010重量%) 显著提高了膜水友性,负电荷和表面粗度.
纯水的透率增加了46.33%,而不会影响盐的选择性.
经过修改的膜表现出优越的防腐性,在6小时后实现HA的95.09%和SA的93.26%的正常化流量,优于对照膜.
与离子相比,离子对污垢和NOM去除具有更有害的影响.

结论:

结合OH-MoS2纳米板是开发具有增强防和NOM去除能力的NF膜的有效策略.
工程膜显示出从具有高盐和NOM含量具有挑战性的来源生产饮用水的前景.
该研究强调了二维纳米材料在推进水净化膜技术方面的潜力.

关键词:

离子是一种离子.离子是一种离子.这是一个MoS2纳米板.纳米过膜是一种纳米过膜.天然有机物质是自然有机物质.有机污染是有机污染.

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