Siddique T A, Dutta Naba K, Roy Choudhury Namita
Chemical and Environmental Engineering, School of Engineering, RMIT University, Melbourne, Victoria 3000, Australia.
Nanomaterials (Basel). 2020 Jul 6;10(7):1323. doi: 10.3390/nano10071323.
Arsenic (As) removal is of major significance because inorganic arsenic is highly toxic to all life forms, is a confirmed carcinogen, and is of significant environmental concern. As contamination in drinking water alone threatens more than 150 million people all over the world. Therefore, several conventional methods such as oxidation, coagulation, adsorption, etc., have been implemented for As removal, but due to their cost-maintenance limitations; there is a drive for advanced, low cost nanofiltration membrane-based technology. Thus, in order to address the increasing demand of fresh and drinking water, this review focuses on advanced nanofiltration (NF) strategy for As removal to safeguard water security. The review concentrates on different types of NF membranes, membrane fabrication processes, and their mechanism and efficiency of performance for removing As from contaminated water. The article provides an overview of the current status of polymer-, polymer composite-, and polymer nanocomposite-based NF membranes, to assess the status of nanomaterial-facilitated NF membranes and to incite progress in this area. Finally, future perspectives and future trends are highlighted.
去除砷具有重大意义，因为无机砷对所有生命形式都具有高毒性，是一种已被证实的致癌物，并且引起了重大的环境关注。仅饮用水中的砷污染就威胁着全世界超过1.5亿人。因此，已经采用了几种传统方法，如氧化、混凝、吸附等，来去除砷，但由于其成本维护限制，人们推动了基于先进、低成本纳滤膜的技术发展。因此，为了满足对新鲜水和饮用水日益增长的需求，本综述重点关注用于去除砷以保障水安全的先进纳滤（NF）策略。该综述集中于不同类型的纳滤膜、膜制备工艺及其从受污染水中去除砷的性能机制和效率。本文概述了基于聚合物、聚合物复合材料和聚合物纳米复合材料的纳滤膜的现状，以评估纳米材料促进的纳滤膜的状况，并推动该领域的进展。最后，突出了未来展望和未来趋势。
