一种具有成本效益和高效率的雅努斯膜,用于使用膜蒸处理油性盐水
Lang Liu1, Wei Wang1, Ye Hong2
1Key Laboratory of LowGrade Energy Utilization Technologies and Systems, Ministry of Education, School of Energy and Power Engineering, Chongqing University, Chongqing 400044, People's Republic of China.
Nanotechnology
|April 10, 2024
概括
这项研究增强了使用酸和APTES进行海水淡化的聚四乙烯 (PTFE) 膜,改善了处理油性盐水的膜蒸中的流量和油污阻力.
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) 为盐水淡化提供低等级的热利用.
- 商用聚四乙烯 (PTFE) 膜具有较低的流量和较差的污染物抵抗性.
- 解决这些局限性对于高效的MD应用程序至关重要.
研究的目的:
- 为了提高PTFE膜的性能,用于直接接触膜蒸 (DCMD).
- 通过表面修改来提高MD中的流量和油污阻力.
- 开发一种强大的膜,用于处理高油性盐水.
主要方法:
- 商业PTFE膜的表面修饰使用酸和 (3-Aminopropyl) -triethoxysilane (APTES).
- 制造水友性/水下超高性纳米粗结构.
- 在DCMD中用矿物油盐乳液评估膜性能.
主要成果:
- 实现了180°的水下油接触角度,表明超级油性.
- 尽管表面粗度增加,但透流量明显增加.
- 在1500 ppm油度下表现出优异的油污抵抗力,没有流量减少.
结论:
- 经过修改的Janus膜表现出增强的流量和优越的油污阻力.
- 水友的表面修饰和纳米结构的形成是提高性能的关键.
- 这种方法为MD处理油性盐水提供了有效的指导.
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