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汉森溶解度参数是否与预测处理后对聚胺基TFC膜的影响有关?

Amaya Kv^1,2, Manas Ranjan Puhan^1,3, Dinesh Bahadursing Vasave^1,3

¹Membrane Science and Separation Technology Division, CSIR-Central Salt and Marine Chemicals Research Institute (CSIR-CSMCRI), Gijubhai Badheka Marg, Bhavnagar, Gujarat, 364002, India.

Environmental science and pollution research international

|February 23, 2024

概括

薄膜复合膜的溶剂后处理显示了各种各样的效果. 汉森可溶性参数 (HSP) 单独无法预测纳米过和反透膜的性能提升.

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.
膜科学膜科学膜科学

背景情况:

基于聚胺的薄膜复合材料 (TFC) 膜对于纳米过 (NF) 和反透 (RO) 是至关重要的.
探索溶剂后处理以提高TFC膜的性能,但其有效性尚未完全理解.
建议使用汉森溶解性参数 (HSP) 来预测膜溶剂相互作用.

研究的目的:

研究溶剂后处理对商业NF和RO TFC膜的影响.
评估汉森溶解性参数 (HSP) 与膜性能增强之间的相关性.
确定最佳后处理条件,以提高纯水透率 (PWP) 和盐排斥.

主要方法:

利用响应表面方法 (盒子-Behnken设计) 来优化后处理变量.
用不同的度和处理时间测试了二甲基形式胺,乙二和乙醇的水溶液.
测量Na2SO4排放和纯水透率 (PWP) 作为关键性能指标.

主要成果:

治疗后的效应并不仅仅由汉森溶解度参数 (Ra) 的差异决定.
乙二 (80%v/v,30s) 显著增强了PWP (124.5%) 并减少了NF膜中的Na2SO4排斥 (3.5%).
在相同的后处理条件下,RO膜显示微不足道的变化.

结论:

汉森溶解度参数 (HSP) 单独不足以预测聚胺TFC膜的溶剂后处理结果.
在NF和RO膜反应的差异表明HSP模型和潜在的接口效应的局限性.
需要进一步的研究,以了解复杂的溶剂膜相互作用,并优化后处理策略.

关键词:

淡化盐水是如何实现的?汉森溶解度参数汉森溶解度参数膜的后处理过程基于聚胺的TFC膜.响应表面的方法响应表面方法

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