Removal of copper ions from aqueous solutions using a nanomembrane ceramic filter doped with magnetic zeolite

Cleaner Water Pub Date : 2024-12-01 DOI:10.1016/j.clwat.2024.100057

Koffi Sossou , S. Bala Prasad , Josephine Tshepho Segotsi

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Abstract

This study investigates the removal of copper ions from aqueous solutions using a nanomembrane ceramic filter doped with magnetic zeolite. The filter was designed using indigenous materials quartz, clay, and CaCO3 each selected for its unique functional properties. Characterization via Scanning Electron Microscopy revealed a well-distributed porous structure that enhances the filter's adsorption capacity. XRD patterns confirmed the crystalline nature of the ceramic filter and the successful incorporation of magnetic nanoparticles into the membrane matrix. VSM analysis showed that the magnetic properties of the zeolite were superparamagnetic, with a maximum saturation magnetization of 0.08 emu/g. Additionally, zeta potential measurements indicated a strong negative charge of −60.9 mV on the material. The filter’s copper removal efficiency was tested under various conditions (pH, initial concentration, and contact time), achieving a maximum removal efficiency of 99 % at pH 9 and an initial concentration of 60 mg/L. Optimization of operational parameters using Response Surface Methodology (RSM) with a Box–Behnken design resulted in a satisfactory coefficient of determination (R² = 0.80), indicating a good fit between experimental data and predicted results. Overall, the comprehensive characterization and optimization results highlight the potential of nanomembranes filter as an effective and economical solution for copper removal water.

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本研究探讨了利用掺入磁性沸石的纳米膜陶瓷过滤器去除水溶液中的铜离子。过滤器的设计使用了本地材料石英、粘土和 CaCO3，每种材料都因其独特的功能特性而被选中。通过扫描电子显微镜进行的表征显示，这种多孔结构分布均匀，增强了过滤器的吸附能力。XRD 图谱证实了陶瓷过滤器的结晶性质，并成功地将磁性纳米颗粒融入膜基质中。VSM 分析表明，沸石具有超顺磁性，最大饱和磁化率为 0.08 emu/g。此外，zeta 电位测量结果表明，该材料带有 -60.9 mV 的强负电荷。在不同条件（pH 值、初始浓度和接触时间）下对过滤器的除铜效率进行了测试，在 pH 值为 9 和初始浓度为 60 mg/L 时，除铜效率最高可达 99%。采用方框-贝肯设计的响应面方法（RSM）对运行参数进行了优化，得出了令人满意的决定系数（R² = 0.80），表明实验数据与预测结果之间拟合良好。总之，综合表征和优化结果凸显了纳米膜过滤器作为一种有效、经济的除铜水解决方案的潜力。

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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Cleaner Water

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