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用硫化聚乙乙聚合物功能化的聚硫膜的应用潜力的性能影响

Abelline Fionah¹, Kate McLarney², Aviana Judd²

¹Department of Chemistry, University of Kentucky, Lexington, KY 40506, USA.

|July 28, 2023

概括

这项研究用SPEEK增强了多硫膜,以更好地处理水. 应用小电压显著改善了离子排斥和水透性,模仿了电透析.

科学领域:

材料科学与工程材料科学与工程
环境科学与工程环境科学与工程
化学工程是化学工程的重要组成部分.

背景情况:

全球日益严重的水危机需要先进的膜技术来有效处理水.
现有的膜面临着诸如污染,流量选择性平衡不佳和高成本等挑战.
对于具有持续性能和改进污染物排斥的膜的持续需求.

研究的目的:

为了增强聚硫 (PSf) 膜的表面电荷和水友性.
为了研究硫酸盐功能化聚乙乙基 (SPEEK) 嵌入PSf膜的性能.
为了评估应用电位对SPEEK离子排斥能力的影响:PSf/NMP膜.

主要方法:

将SPEEK纳入PSf/N-Methyl-2-pyrrolidone (PSf/NMP) 膜中,以改变表面的特性.
膜形态,表面结构,接触角度和泽塔潜力的表征.
在各种盐 (NaCl,CaCl2,KCl) 的存在下,在膜上应用1.5V电位,以评估溶液排斥.

主要成果:

结合SPEEK增加了膜水友性和表面负电荷,增强了离子排斥.
使用1.5V电位显著提高了SPEEK:PSf/NMP膜的透性和选择性.
修改后的膜表现出类似于电透析的性能,通过电荷排斥有效地去除离子.

结论:

加入SPEEK是一种有效的策略,可以提高PSf膜在水处理中的性能.
外部电场的应用与膜的特性协同,以增强离子去除.
这些发现为开发具有成本效益和效率的基于膜的海水淡化和水净化系统提供了有希望的途径.

关键词:

收费收费收费收费收费收费收费收费收费收费电透析是一种电透析.水友性是一种水友性.聚乙烯乙烯基聚乙烯乙烯基硫化硫化是一种硫化.超过是一种超过.

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