Membrane Science and Separation Technology Division, CSIR-Central Salt and Marine Chemicals Research Institute (CSIR-CSMCRI), Council of Scientific & Industrial Research (CSIR), Bhavnagar, India.
Water Environ Res. 2020 Nov;92(11):1990-1998. doi: 10.1002/wer.1356. Epub 2020 May 30.
Making a nanocomposite membrane is an effective way of producing membranes with desired functionality, better permeance. In this work, virgin polysulfone ultrafiltration (UF) membrane and nanocomposite membranes with different concentrations ranging from 100 to 2,000 mg/L iron-nickel oxide in polysulfone matrix were prepared by phase inversion method. The performances of prepared membranes were evaluated by pure water permeance testing, protein rejection, and lead rejection. Up to 99.66% removal of lead was achieved by nanocomposite membrane. The structure and property of membranes were analyzed by scanning electron microscopy (SEM), powder X-ray diffractometer (XRD), and atomic force microscopy (AFM) and zeta potential analysis. The nanocomposite membranes showed higher water permeance as compared to virgin ultrafiltration membrane. The membrane with 750 mg/L concentration of iron-nickel oxide nanoparticle demonstrated the increase in water flux by 117.85% as compared to the virgin ultrafiltration membrane. Higher albumin rejection and lead rejection were achieved by nanocomposite membrane as compared to polysulfone membrane. Leaching study of nanomaterial in water was undertaken, and it was found the leaching of nanomaterial was minimal. Increase in surface roughness, increase in number of pores with decrease in pore size, led to improvement in ultrafiltration performance by increased selectivity and permeance of the membrane. © 2020 Water Environment Federation PRACTITIONER POINTS: The nanocomposite ultrafiltration membrane with iron-nickel oxide nanomaterial. Upto 117.85% increase in pure water permeance as compared to virgin membrane. Upto 99.66% lead rejection and upto 96.8% albumin rejection from aqueous solution. Little or no leaching of nanomaterials in water. Increased selectivity and productivity of membrane.
制备纳米复合膜是一种生产具有所需功能、更好渗透性的膜的有效方法。在这项工作中，通过相转化法制备了不同浓度（100-2000mg/L 铁镍氧化物在聚砜基体中）的原生聚砜超滤（UF）膜和纳米复合膜。通过纯水渗透测试、蛋白质截留和铅截留评估制备膜的性能。纳米复合膜可实现高达 99.66%的铅去除率。通过扫描电子显微镜（SEM）、粉末 X 射线衍射仪（XRD）、原子力显微镜（AFM）和zeta 电位分析对膜的结构和性能进行了分析。与原始超滤膜相比，纳米复合膜具有更高的水通量。与原始超滤膜相比，浓度为 750mg/L 的铁镍氧化物纳米颗粒的膜水通量增加了 117.85%。纳米复合膜的白蛋白截留率和铅截留率均高于聚砜膜。对纳米材料在水中的浸出进行了研究，发现纳米材料的浸出量很小。表面粗糙度增加，孔径减小，孔数增加，导致膜的选择性和渗透性提高，从而改善超滤性能。 © 2020 水环境联合会从业者要点：含铁镍氧化物纳米材料的纳米复合超滤膜。与原始膜相比，纯水通量增加了 117.85%。从水溶液中可实现高达 99.66%的铅截留率和高达 96.8%的白蛋白截留率。纳米材料在水中的浸出量很少或没有。膜的选择性和产率提高。
