Enhancing the membrane water permeability without undermining selectivity has strong potential to reduce the cost of loose nanofiltration (LNF) which attracts growing interest in water and wastewater treatments. Herein, we report a novel polyelectrolyte multilayer LNF membrane with intercalated surfactant self-assemblies. The LNF membranes with integrated surfactant self-assemblies exhibit outstanding permeability to water and selectivity to organic macromolecules such as humic acid and methyl blue. Specifically, the integration of surfactant self-assemblies, SSA, enhances the water permeability by more than 5-fold compared to the reference LNF membrane and, at the same time, increases humic acid rejection from 93% to 98%. The SSA integrated LNF membranes also demonstrate superior performance in terms of permselectivity compared to other membranes in the literature for similar separation (humic acid removal).

中文翻译：

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通过插入表面活性剂组合物来增强松散的纳滤膜性能的多重提高

在不损害选择性的情况下提高膜的透水性具有降低降低松散纳滤（LNF）成本的巨大潜力，而松散纳滤（LNF）引起了对水和废水处理的日益增长的兴趣。在本文中，我们报告了一种新型的具有插入式表面活性剂自组装的聚电解质多层LNF膜。具有表面活性剂自组装体的LNF膜对水具有出色的渗透性，对腐殖酸和甲基蓝等有机大分子具有选择性。具体而言，与参考LNF膜相比，表面活性剂自组装体SSA的集成将透水性提高了5倍以上，同时，腐殖酸的排阻率从93％增加到98％。