基于塑料废弃物的高效超膜,用于从水中去除染料
Eman S Mansor1, Heba Abdallah2, A M Shaban1
1Water Pollution Research Department, Environment and Climate Change Research institute, National Research Centre, Dokki, Giza, Egypt.
概括
回收废弃的聚钢 (WPS) 和聚乙烯化物 (PVDF) 制造出低成本的超膜. 优化的50%WPS膜显示了改善的染料排斥和废水处理的抗污染特性.
科学领域:
- 材料科学 材料科学 材料科学
- 环境工程 环境工程
- 化学工程是化学工程的重要组成部分.
背景情况:
- 开发具有成本效益和高效的膜对于废水处理至关重要.
- 废聚乙烯 (WPS) 是材料创新的未充分利用的资源.
- 聚乙烯化物 (PVDF) 是用于膜制造的常见材料.
研究的目的:
- 制造和特征超过膜从废聚钢 (WPS) 与聚乙烯化物 (PVDF) 混合.
- 研究WPS比对膜形态,透性,选择性和防性能的影响.
- 评估这些膜在处理有色废水方面的潜力.
主要方法:
- 膜是使用相位逆转方法在非织造支上制造的.
- 交叉流过被用来测试纯水的透性和染料 (刚果红色和甲蓝色) 的排斥.
- 分析了形态,并通过流量回收比率和多个过周期的污染分析评估了抗污染性质.
主要成果:
- WPS/PVDF混合物改变了膜形态,从海绵状结构变成了类似手指的结构.
- 优化的50%WPS膜实现了81%的刚果红色和74%的甲蓝色排斥,具有良好的水透性 (50LMH).
- 50%的WPS膜表现出优异的防腐性能,流量回收率为88.2%,在8个循环中具有高清洁效率 (71-90%).
结论:
- 废旧聚烯可以有效地回收成低成本,高性能超膜.
- 50%的WPS/PVDF膜在去除染料时提供了透性和选择性之间的良好平衡.
- 这些膜显示出可扩展应用在工业织废水处理中的巨大潜力.
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