具有增强透性的大面积粘土复合膜,用于高效的染料/盐分离
Yixuan Fu1, Shuai Wang1, Huiquan Liu1
1Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education, School of Energy & Power Engineering, Dalian University of Technology, Dalian 116024, China.
Membranes
|January 24, 2025
概括
一种新型的粘土膜使用 sepiolite 和 vermiculite 提供了高效的染料和盐分离从织废水. 这种环保材料提供高流量和稳定的性能,解决了关键的环境风险.
科学领域:
- 材料科学 材料科学 材料科学
- 环境工程 环境工程
- 纳米技术 纳米技术
背景情况:
- 织废水排放带来了严重的环境风险,因为染料和盐分含量很高.
- 二维 (2D) 纳米材料膜显示出染料/盐分离的希望,但由于狭窄的间距和曲的通道,其处理能力和离子透性受到限制.
研究的目的:
- 开发一种新型的高性能膜,以有效地从织废水中分离染料/盐.
- 通过创建增强的运输通路来克服现有的二维纳米材料膜的局限性.
主要方法:
- 使用Meyer棒涂层与自然存在的粘土制造一个 sepiolite/vermiculite复合膜.
- 皮石纳米纤维在皮石纳米片内相互插入,以创建一个更宽松,更透的网络.
主要成果:
- 优化的膜 (80%的 sepiolite) 实现了 78.12 LMH bar-1.1 的高流量.
- 证明了出色的刚果红色染料排斥率 (~98.26%) 和出色的染料/盐选择性 (10.41).
- 在酸性,性和长时间运行条件下表现出稳定的分离性能.
结论:
- 塞皮奥利特/维米库利特复合膜为高效和环保的染料/盐分离提供了一个有希望的,具有成本效益的解决方案.
- 简单的制造方法和低成本材料的使用使工业应用的大规模生产成为可能.
- 这种全粘土复合膜是应对织废水污染的新战略.
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