Membrane Separation Group, Department of Chemical Engineering, National Institute of Technology Calicut, Calicut, 673601, India.
Environ Sci Pollut Res Int. 2021 Mar;28(10):11915-11927. doi: 10.1007/s11356-020-08024-8. Epub 2020 Feb 18.
Effluents from food, fermentation, and sugar industries contain a large quantity of glucose which has to be removed to limit the chemical oxygen demand (COD) of the water discharged. This work proposes novel thin-film nanocomposite (TFN) membranes incorporated with MgFeO and ZnFeO nanoparticles to address this concern. The nanoparticles synthesized by the sol-gel method was extensively characterized and then incorporated into the active polyamide layer of the thin-film composite polysulfone membranes. The change in membrane morphology, wettability, chemical structure, and mechanical strength with the incorporation of nanoparticles was studied in detail. Membranes with 0.005 wt.% MgFeO nanoparticle exhibited highest glucose rejection (96.52 ± 2.35%) at 10 bar, 25 °C, and sufficiently high pure water flux (50.54 ± 1.92 L/mh). This membrane also displayed 69.1 ± 5.12% salt rejection when challenged with 2000 ppm synthetic NaCl solution.
食品、发酵和制糖工业的废水含有大量的葡萄糖，必须去除以限制排放水的化学需氧量 (COD)。本工作提出了新型的薄膜纳米复合（TFN）膜，其中掺入了 MgFeO 和 ZnFeO 纳米粒子来解决这个问题。通过溶胶-凝胶法合成的纳米粒子进行了广泛的表征，然后将其掺入到薄膜复合聚砜膜的活性聚酰胺层中。详细研究了纳米粒子掺入对膜形貌、润湿性、化学结构和机械强度的影响。在 10 巴、25°C 下，含 0.005wt.%MgFeO 纳米粒子的膜表现出最高的葡萄糖截留率（96.52±2.35%），纯水通量（50.54±1.92L/mh）也足够高。当用 2000ppm 合成 NaCl 溶液进行挑战时，该膜还显示出 69.1±5.12%的盐截留率。
