构建高度水化和透的密集的简氏膜,用于快速和强大的膜蒸和海水淡化
Chao Wang1, Yangbo Qiu1, Guangzhe Wang1
1School of Environmental Science and Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, Shanghai, PR China.
Water research
|December 27, 2024
概括
一种新型的Janus膜 (JM) 显著增强了用于高盐废水处理的膜蒸 (MD) 流. 这种高性能膜表现出极好的稳定性并防止污染,为高效的净水提供了有前途的解决方案.
科学领域:
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
- 环境科学 环境科学
背景情况:
- 密集的Janus膜 (JMs) 在高盐废水处理中显示出膜蒸 (MD) 的前景.
- 密集膜中的高质量转移阻力限制了它们的实际应用.
- 开发具有增强流量和稳定性的JM对于有效的水净化至关重要.
研究的目的:
- 开发一种新的密度较高的简斯膜 (JM),用于膜蒸 (MD) 的流量得到改善.
- 调查开发的JM增强流量和稳定性背后的机制.
- 评估JM在用污染物处理高盐废水方面的表现.
主要方法:
- 使用功能单体 (THPC) 在聚乙烯化物 (PVDF) 基板上的受控界面聚合.
- 膜蒸 (MD) 性能测试以测量流量和稳定性.
- 包括拉曼光谱,差分扫描热量测量 (DSC),动态水接触角度测量和正子消灭光谱等特征化技术.
主要成果:
- 优化的THPC/PVDF JM实现了比基板高21.3%的流量.
- JM对表面活性剂,油和石膏表现出强大的稳定性.
- 增强的水友性,高的中间含水量和优化的孔隙结构有助于增加水的蒸发和透性.
- 密集的表面层有效地防止了污染物的入和粘附,确保了稳定的运行.
结论:
- 新的THPC/PVDF JM在过废水处理的膜蒸方面取得了重大进展.
- 增强的水友性和优化毛孔结构的协同效应导致了显著的流量增加.
- 膜的稳定性和防腐性确保在具有挑战性的水条件下可靠的性能.
- 这项研究为设计高流量,稳定的JM提供了有价值的见解,以实现高效的净水.
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