Mg(Al)O mixed metal oxides as nanofiller for the preparation of sustainable antifouling polyethersulfone membranes

IF 5.5 Q1 ENGINEERING, CHEMICAL

Chemical Engineering Journal Advances Pub Date : 2025-06-13 DOI:10.1016/j.ceja.2025.100793

Hajar Jabkhiro , Francesca Russo , Kaoutar El Hassani , Francesco Galiano , Giovanni Pietro Chiappetta , Alfonso Policicchio , Luca Tortora , Abdellah Anouar , Alberto Figoli

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Abstract

This study aims to develop a high-performance and sustainable ultrafiltration (UF) membrane by incorporating Mg(Al)O mixed metal oxide nanoparticles (NPs) into a polyethersulfone (PES) matrix. The membranes were fabricated using the non-solvent-induced phase separation (NIPS) method, with PolarClean as a green solvent and water as a coagulation bath, and applied for dye removal. The effect of Mg(Al)O content (0 – 1 wt. %) on the membrane properties was investigated, demonstrating that the incorporation of Mg(Al)O enhances permeability, dye rejection, and antifouling performance compared to the pristine PES membrane. The membrane containing 1 wt. % of Mg(Al)O exhibited the best performance in terms of improved hydrophilicity, enhanced pure water flux with a value of 107.2 L m⁻² h⁻¹ at 2 bar, and superior dye rejection for a 50 mg L⁻¹ Acid Red 4 aqueous solution. Additionally, the Mg(Al)O/PES membrane showed excellent antifouling properties, achieving a flux recovery ratio (FRR) of 76.8 % and reduced irreversible fouling ratio (R_ir = 23.2 %). These findings highlight the potential of Mg(Al)O NPs as effective nanofillers for UF membranes designed for efficient dye rejection while promoting the use of easy and environmentally friendly fabrication methods.

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Mg(Al)O混合金属氧化物作为纳米填料制备可持续防污聚醚砜膜

本研究旨在将Mg(Al)O混合金属氧化物纳米颗粒（NPs）掺入聚醚砜（PES）基质中，开发一种高性能、可持续的超滤（UF）膜。采用非溶剂诱导相分离法（NIPS）制备膜，以PolarClean为绿色溶剂，水为混凝浴，用于染料去除。研究了Mg(Al)O含量（0 - 1 wt. %）对膜性能的影响，表明与原始PES膜相比，Mg(Al)O的掺入提高了膜的渗透性、抗染性和防污性能。含有1wt . % Mg(Al)O的膜在改善亲水性、提高纯水通量（在2bar下达到107.2 L m−2 h−1）和对50mg L−1酸性红4水溶液的优异染料去除率方面表现出最佳性能。此外，Mg(Al)O/PES膜具有优异的防污性能，通量回收率（FRR）达到76.8%，不可逆污染率（Rir = 23.2%）降低。这些发现突出了Mg(Al)O NPs作为UF膜的有效纳米填料的潜力，该膜设计用于有效的染料去除，同时促进了简单和环保的制造方法的使用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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