由聚醇启发的粘性纳米粒子衍生出的三元网络:纳米过分离效率和寿命终端膜再生潜力
Jiaying Yan1, Panpan Wang2, Ying Cao1
1State Key Laboratory of Urban-rural Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China.
这项研究提出了一种新方法,用于使用酸-聚乙烯醇-铁 (TA-PVA-Fe) 网络再生使用寿命终止 (EOL) 纳米过 (NF) 膜. 再生后的膜显示出改善的盐分离和防性质,为水处理提供了可持续的解决方案.
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:
- 商业纳米过 (NF) 膜降解,导致昂贵的更换和环境浪费.
- 开发可持续的方法来再生寿命终端 (EOL) 膜对于水处理至关重要.
研究的目的:
- 提出一种用于再生EOL NF膜的新策略.
- 创建一个稳定的三元交联网络,使用酸 (TA),聚乙醇 (PVA) 和Fe3+进行膜修复.
主要方法:
- 利用原子力显微镜 (AFM) 和石英晶体微平衡-消散 (QCM-D) 来研究TA-PVA-Fe网络形成.
- 标志着再生膜的孔径大小,盐分离性能和防腐性质.
主要成果:
- 这种TA-PVA-Fe三元网络显著减少了孔径 (MWCO = 399 Da).
- 实现了增强的单价/双价盐分离 (Cl-/SO42-分离因子为54.5).
- 证明了强大的长期分离性能和卓越的防性质,减少了超过45%的流量下降.
结论:
- 开发的TA-PVA-Fe三元网络有效地再生了EOL NF膜.
- 这种环保的方法为膜回收和先进的水处理提供了可持续的解决方案.
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