基于酸硫酸盐和酸盐的纳米颗粒用于通过前方透过程去除重金属离子
Kobra Borjsaz1, Alireza Shakeri2, Fateme Rasouli2
1Department of Chemistry, Alborz Campus, University of Tehran, Tehran, Iran.
International journal of biological macromolecules
|December 4, 2025
概括
新的薄膜纳米复合材料 (TFN) 膜使用酸-酸硫酸盐 (CS-LS) 纳米颗粒改善了废水处理的向前透 (FO). 这些膜显示出增强的水流和优异的重金属去除,解决淡水短缺问题.
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:
- 全球淡水短缺需要先进的废水处理解决方案.
- 向前透 (FO) 是一项有前途的膜技术,用于净化水.
- 高性能FO膜对于高效的水流量和选择性至关重要.
研究的目的:
- 开发新的薄膜纳米复合材料 (TFN) 膜,用于前向透 (FO).
- 为了研究酸盐-二硫酸盐 (CS-LS) 纳米颗粒对FO膜性能的影响.
- 提高废水处理和重金属清除能力.
主要方法:
- 酸盐 (CS) 和二硫酸盐 (LS) 的共价交联形成CS-LS纳米粒子.
- 通过界面聚合,将CS-LS纳米粒子嵌入聚胺 (PA) 选择层中,以创建TFN膜.
- 在不同纳米粒子度下对膜形态,表面特征和FO性能进行系统评估.
主要成果:
- 纳入CS-LS纳米颗粒的结果是一个光滑,薄的PA层,由SEM证实.
- TFN-CLS-2膜 (400 ppm CS-LS) 实现了最佳性能,增强了水流量 (18.5 LMH) 和选择性.
- 与TFC膜相比,TFN-CLS-2膜表现出优异的重金属排斥 (99.7% Cr3 +,98.2% Pb2 +).与TFC膜相比,TFN-CLS-2膜显示出优异的重金属排斥 (99.7% Cr3 +,98.2% Pb2 +).
- 采用Zwitterionic CS-LS纳米颗粒,改善了PA层的水友性和多南机制离子排斥.
结论:
- 使用CS-LS纳米颗粒制造高性能TFN-FO膜是污水处理的可行策略.
- 开发的膜为净化水和去除重金属提供了高效和潜在的可持续解决方案.
- 这种方法有助于通过先进的膜技术解决全球淡水短缺问题.
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