具有高表面能量的薄连续膜涂层,用于全面的抗污染海水蒸
Yuandong Jia1, Kecheng Guan2, Zhaohuan Mai2
1Research Center for Membrane and Film Technology, Kobe University, 1-1 Rokkodaicho, Nada, Kobe 657-8501, Japan; Department of Chemical Science and Engineering, Kobe University, 1-1 Rokkodaicho, Nada, Kobe 657-8501, Japan; State Key Laboratory of Fine Chemicals, Frontier Science Center for Smart Materials, School of Chemical Engineering, Dalian University of Technology, No.2 Linggong Road, Dalian 116024, China.
Water research
|August 14, 2023
概括
本研究引入了一种新型的双抗膜,用于通过使用高表面能量涂层进行膜蒸 (MD). 这项创新显著提高了MD处理废水过程的寿命和性能.
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:
- 膜蒸 (MD) 使用低级热能提供高效的高盐度废水处理,实现高盐排放和零排放.
- 疏水型MD膜面临有机污染和矿物化的挑战,阻碍了实际应用.
- 提高对有机污染和矿物缩的抗性通常需要对立的膜湿性质,因此难以同时实现双抗性.
研究的目的:
- 开发一种新的膜修饰策略,在MD过程中同时抵抗有机污染和矿物缩放.
- 使用水下,热力学稳定,高表面能量的涂层,创建具有明显表面能量的简斯膜.
- 通过MD提高废水处理中使用的膜的耐用性和运行寿命.
主要方法:
- 用高表面能量涂层对疏水性MD膜进行修改,以创建Janus结构.
- 使用水下涂层技术,以确保涂层层的热力学稳定性.
- 进行理论分析和实验验证,以评估膜性能和寿命.
主要成果:
- 修改后的膜表现出对有机和无机污染物的双重抵抗力.
- 底层结构保持了MD的必不可少的疏水性,而涂层则提供了防腐和防垢性.
- 实验结果表明,与原始膜相比,膜寿命大约增加了十倍.
结论:
- 建议的策略有效地克服了在MD应用中单抗膜的局限性.
- 在水下涂层中使用高表面能量的材料是开发抗污染膜的多功能方法.
- 这一进步为废水处理中的强大且持久的膜蒸工艺提供了一个有希望的新途径.
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