Cost-effective Polymer-based Membranes for Drinking Water Purification
Cost-effective Polymer-based Membranes for Drinking Water Purification
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DOI：
10.1016/j.giant.2022.100099
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发表时间：
2022-04
期刊：
影响因子：
7
通讯作者：
Xiaohan Xu;Yuqing Yang;Tianbo Liu;Benjamin Chu
中科院分区：
文献类型：
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作者：
Xiaohan Xu;Yuqing Yang;Tianbo Liu;Benjamin Chu
由于气候变化和污染，全球水资源短缺正在加剧，随着全球经济和人口的增长，对清洁水的需求更具挑战性。膜过滤技术由于其能源效率而被广泛应用于饮用水净化，同时面临诸如污染、降解和权衡的挑战，例如选择性和渗透性。我们社会的可持续发展需要进一步了解和改进这些膜。本文综述了聚合物基水净化膜的基本结构，包括有效分离层、支撑层和可能的顶部保护层。详细内容包括用于微滤（MF）和超滤（UF）的常规膜，用于薄膜复合（TFC）膜分离的有效层，用于MF，UF和膜蒸馏（MD）的电纺纳米纤维膜，以及新兴的自组装嵌段共聚物膜。此外，传统的支持层和电纺纳米纤维支持层的反渗透（RO）和正渗透（FO）过程中，和顶部的保护层进行了讨论。材料，膜的结构和性能，修改策略，可能的中间层，互连，相互渗透，和不同层之间的相互作用进行了讨论，强调各种膜的成本效益。
Global water scarcity is exacerbating owing to climate change and pollution, making the demand for clean water more challenging with the growth of the global economy and population. Membrane filtration technologies have been widely applied in drinking water purification due to their energy efficiency while facing challenges like fouling, degradation and trade-offs, such as selectivity and permeability. The sustainable development of our society demands further understanding and improvement of those membranes. In this review, the basic structures of polymer-based water purification membranes including the effective layer for separation, the support layer and the possible top protective layer are presented. Details include the conventional membranes for microfiltration (MF) and ultrafiltration (UF), the effective layers for separation in thin-film composite (TFC) membranes, electrospun nanofibrous membranes for MF, UF, and membrane distillation (MD), as well as the emerging self-assembled block copolymer membranes. Furthermore, the conventional support layers and electrospun nanofibrous support layers for reverse osmosis (RO) and forward osmosis (FO) processes, and the top protective layers are discussed. The materials, membrane structures and properties, modification strategies, possible interlayers, interconnects, interpenetration, and interactions between different layers are discussed, with the emphasis on the cost-effectiveness of various membranes.