In this study, an NH₂-MIL-53(Fe) functionalized membrane was fabricated for Cr(VI) removal from contaminated groundwater. Design-Expert was employed to determine the optimum membrane structure in order to enhance selective adsorption rate and flux by investigating two factors of metal–organic framework (MOF: 0–5 wt%) and polyvinylpyrrolidone (PVP: 0.1–1 wt%). NH₂-MIL-53(Fe) successfully synthesized was proved using FESEM, FTIR, EDS, and XRD analyses. NH₂-MIL-53(Fe) functionalized membrane was prepared, and the properties were recognized using FESEM, EDS, EDX-mapping, and CA. According to these analyses, the synthesized MOF improved membrane properties such as hydrophilicity and porosity. Moreover, the MOF crystals were well immobilized in the polymer solution and uniformly distributed in the composite membrane. On the basis of the statistical results, PVP had a much more significant effect on adsorption percentage than MOF. In accordance with the Design-Expert result, the optimum structure of the MOF functionalized membrane containing 3.6 wt% of NH₂-MIL-53(Fe) and 0.4 wt% of PVP exhibited a removal percentage of 87% and flux of 101 L m⁻² h⁻¹. Investigation of the effect of TDS did not indicate any interference with Cr(VI) adsorption by the adsorbent. Additionally, membrane repeatability and regeneration tests, used in five cycles, confirmed the membrane's long-term durability and performance.

在这项研究中，制造了一种 NH ₂ -MIL-53(Fe) 功能化膜，用于从受污染的地下水中去除 Cr(VI)。Design-Expert 用于确定最佳膜结构，以通过研究金属有机骨架（MOF：0-5 wt%）和聚乙烯吡咯烷酮（PVP：0.1-1 wt%）这两个因素来提高选择性吸附率和通量。使用FESEM、FTIR、EDS和XRD分析证明了NH _{2 -MIL-53(Fe)的成功合成。}NH ₂-制备MIL-53(Fe)功能化膜，并使用FESEM、EDS、EDX-mapping和CA识别性能。根据这些分析，合成的 MOF 改善了膜的性能，例如亲水性和孔隙率。此外，MOF晶体很好地固定在聚合物溶液中并均匀分布在复合膜中。根据统计结果，PVP对吸附百分比的影响比MOF显着。根据 Design-Expert 结果，含有 3.6 wt% NH ₂ -MIL-53(Fe) 和 0.4 wt% PVP 的 MOF 功能化膜的最佳结构表现出 87% 的去除率和 101 L m 的通量^-2 小时^-1. 对 TDS 影响的研究并未表明吸附剂对 Cr(VI) 的吸附有任何干扰。此外，在五个循环中使用的膜重复性和再生测试证实了膜的长期耐用性和性能。