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Efficient rejection of organic compounds using functionalized ZSM-5 incorporated PPSU mixed matrix membrane

机译：使用功能化ZSM-5并入PPSU混合基质膜可有效去除有机化合物

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Zeolite (ZSM-5) and functionalised zeolite blended polyphenylsulfone (PPSU) mixed matrix membranes (MMMs) were fabricated for comparing their performance with virgin PPSU. Similar to zeolite-MMMs, functionalised zeolites such as Fe-ZSM-5 (Fe-Z) and Cu-ZSM-5 (Cu-Z) were mixed with PPSU in the presence of N-methyl pyrrolidone (NMP) solvent. The synthesized zeolite nanoparticles were ultra-sonicated before incorporation to ensure uniform dispersion in PPSU. The PPSU MMMs with incorporated nanomaterials were fabricated as flat sheet modules by means of the phase inversion method. The developed MMMs were examined for homogeneity and characterized for their properties, such as surface hydrophilicity, membrane morphology, thermal stability and surface roughness. An enhanced pure water flux of 62 L m?2 h?1 and a highest lignin retention of 85.2% were observed for a PPSU membrane with 0.5 wt% of zeolite nanomaterials incorporated. The 3D porous structure of the zeolite favoured the enhancement of flux during water and lignin separation. However, the incorporation of functionalised zeolite nanomaterials influenced the increase in maximum lignin rejection to 88.5%. The performance and anti-fouling ability of synthesized MMMs has been evaluated based on the rejection of organic components. Higher preferential permeation with great rejection of lignin were simultaneously observed for zeolite and Cu–zeolite incorporated MMMs.
机译：制备了沸石（ZSM-5）和功能化的沸石共混聚苯砜（PPSU）混合基质膜（MMM），以比较它们与纯PPSU的性能。与沸石-MMM相似，在 N -甲基吡咯烷酮的存在下，将Fe-ZSM-5（Fe-Z）和Cu-ZSM-5（Cu-Z）等功能化沸石与PPSU混合（NMP）溶剂。掺入之前，对合成的沸石纳米颗粒进行超声处理，以确保在PPSU中均匀分散。通过相转化法将掺有纳米材料的PPSU MMM制造为平板模块。检查已开发的MMM的均质性并对其特性进行表征，例如表面亲水性，膜形态，热稳定性和表面粗糙度。纯水通量提高了62 L m ？2 h ？1 ，木质素的最高保留率为85.2％观察到掺有0.5重量％沸石纳米材料的PPSU膜。沸石的3D多孔结构有助于在水和木质素分离过程中提高通量。然而，功能化沸石纳米材料的掺入影响了最大木质素截留率的增加至88.5％。合成的MMM的性能和防污能力已经根据有机成分的排斥性进行了评估。同时观察到沸石和结合了Cu-沸石的MMM具有较高的优先渗透率和木质素的截留率。

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