高效的多污染物去除:Keggin聚氧甲酸盐在聚硫-奇托桑混合膜中的作用
Marzieh A Fashapoyeh1, Soheila Shokrollahzadeh1, Arun M Isloor2
1Iranian Research Organization for Science and Technology (IROST), Department of Chemical Technologies, Tehran, Iran.
概括
这项研究开发了先进的混合膜,使用聚硫,基托和聚乙烯醇与聚氧甲酸盐进行高级净水. 最佳的膜实现了高水流量和优秀的重金属和染料的去除.
科学领域:
- 分离科学 分离科学
- 材料科学是一种材料科学.
- 环境工程环境工程
背景情况:
- 膜过对于水的净化至关重要.
- 开发具有增强性能的先进膜是必不可少的.
研究的目的:
- 开发新型的混合膜,包括聚氧甲酸盐 (POMs),用于高效的水净化.
- 研究不同POMs ({SiW11}和{SiW12}) 对膜性能的影响.
主要方法:
- 使用聚硫 (PS),奇托 (CS) 和聚乙烯醇 (PVA) 制造混合膜.
- 在不同度 (0.051.0 wt%) 的Keggin多氧金属酸盐 ({SiW11}和{SiW12}) 的结合.
- 膜特性 (孔隙性,孔隙结构,水友性) 的表征和对水流和污染物去除的性能评估.
主要成果:
- 具有0.1%重量%{SiW11}的最佳膜表现出高孔隙性,类似手指的毛孔,以及增强的水友性.
- 实现了 34.8 L/m2h 的水流量.
- 对重金属离子 (Ni2+,Cu2+,Pb2+) 进行了 >88% 的排斥,对有机染料 (刚果红色,甲蓝色) 进行了 >98% 的排斥.
- 在多重污染物清除方面,{SiW11} 含膜的性能优于{SiW12} 含膜.
结论:
- 开发的带有POM的混合膜显示了有效净化水的巨大潜力.
- 与{SiW12}相比,{SiW11}的结合使得在水流和污染物去除方面具有更好的性能.
- 性能提升归因于表面电荷,尺寸排除和POM吸附特性.
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