This study explored the impact of eco-friendly polydopamine (PDA) coated ZnFe₂O₄ nanocomposites (PDA@ZnFe₂O₄ NCs) as nanofillers to fabricate a new class of polyethersulfone (PES) hybrid ultrafiltration (UF) membranes for wastewater treatment applications. The hybrid UF membrane was prepared by incorporating PDA@ZnFe₂O₄ NCs into PES via the non-solvent induced phase separation (NIPS) process. The PDA@ZnFe₂O₄ NC was characterized by Fourier transform infrared (FT-IR), X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). Additionally, the morphology and performance of the prepared hybrid membranes were characterized by SEM, contact angle, surface charge, and thermogravimetric analysis (TGA). The incorporation of PDA@ZnFe₂O₄ NC into the PES membrane affects the porosity, mean pore radius, hydrophilicity, and thermal stability of the developed hybrid membranes. The pure water flux of the PES hybrid membrane with 4 wt% PDA@ZnFe₂O₄ reached ∼687 L/m² h, which is about 188% higher than that of the pristine PES membrane. The performance of the PES/ PDA@ZnFe₂O₄ultrafiltration hybrid membrane was also investigated using humic acid (HA) foulant and oil/water emulsion individually. Compared to the pristine PES and PES/ZnFe₂O₄ membranes, the developed hybrid membranes showed enhanced permeability and HA foulant removal. HA's removal efficiency has improved from ∼65% in the pristine PES membrane to ∼94% in the 4 wt% PDA@ZnFe₂O₄ hybrid membrane. The abundant functional groups on the PDA@ZnFe₂O₄ NC surface also enhanced the separation of the oil/water emulsion (96%). In both the HA and oil/water emulsion separation tests, the flux recovery ratio (FRR) and reversible fouling ratio (Rr) were also significantly improved, suggesting that the PES/PDA@ZnFe₂O₄ membrane was a very promising candidate for HA removal and treatment of oily wastewater.

这项研究探讨了环保型聚多巴胺（PDA）包覆的ZnFe ₂ O ₄纳米复合材料（PDA @ ZnFe ₂ O ₄ NCs）作为纳米填料的影响，以制造用于废水处理应用的新型聚醚砜（PES）混合超滤（UF）膜。 。通过非溶剂诱导相分离（NIPS）工艺将PDA @ ZnFe ₂ O ₄ NCs引入PES中来制备杂化超滤膜。PDA @ ZnFe ₂ O ₄NC的特征在于傅立叶变换红外（FT-IR），X射线衍射（XRD），扫描电子显微镜（SEM）和透射电子显微镜（TEM）。另外，通过SEM，接触角，表面电荷和热重分析（TGA）来表征所制备的杂化膜的形态和性能。将PDA @ ZnFe ₂ O ₄ NC掺入PES膜中会影响已开发的杂化膜的孔隙率，平均孔径，亲水性和热稳定性。具有4wt％的PDA @ ZnFe ₂ O ₄的PES杂化膜的纯水通量达到〜687L / m ² h，比原始的PES膜的纯水通量高约188％。PES / PDA @ ZnFe的性能还分别使用腐殖酸（HA）污垢剂和油/水乳液研究了₂ O ₄超滤杂化膜。与原始的PES和PES / ZnFe ₂ O ₄膜相比，已开发的杂化膜显示出更高的渗透性和HA污垢去除能力。HA的去除效率从原始PES膜的〜65％提高到4wt％PDA @ ZnFe ₂ O ₄杂化膜的〜94％。PDA @ ZnFe ₂ O ₄上的丰富官能团NC表面还增强了油/水乳液的分离度（96％）。在HA和油/水乳化液分离测试中，通量回收率（FRR）和可逆结垢率（Rr）也得到了显着改善，表明PES / PDA @ ZnFe ₂ O ₄膜是HA的非常有希望的候选者去除和处理含油废水。