Effective Desalination of Brackish Water by Electrodialysis Using SPANI Composite Cation Exchange Membranes
Effective Desalination of Brackish Water by Electrodialysis Using SPANI Composite Cation Exchange Membranes
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DOI：
10.1002/slct.201701200
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发表时间：
2017-09
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影响因子：
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通讯作者：
S. Gahlot;P. Sharma;P. Jha;V. Kulshrestha
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作者：
S. Gahlot;P. Sharma;P. Jha;V. Kulshrestha
地球仪各地的缺水问题令人关切。这个问题在未来几十年可能会变得更严重，因此获得清洁和饮用水是研究人员的首要任务。电渗析（艾德）是一种能量有效且成本有效的生产饮用水的技术，其中离子通过离子交换膜迁移。本文以磺化聚苯胺（SPAN I）为离子导电填料，磺化聚醚砜（SPES）为聚合物基体，采用不同浓度的SPAN I（1 ~ 20wt%）制备复合膜。对复合膜进行了电渗析实验，分析了复合膜的脱盐性能。复合膜对盐的去除表现出良好的性能。在所制备的膜中，观察到S-SP-5膜在物理化学性质以及艾德性能方面最好。S-SP-5膜的能耗为0.99 kWh kg-1，除盐效率为76.28%。 因此，基于SPAN I/SPES的复合膜对于使用电渗析从水中去除盐是有效的。
Water scarcity occurring across the globe is a matter of concern. The problem may grow worst in coming decades so access to clean and drinkable water is the priority among the researchers. Electrodialysis (ED) is an energy efficient and cost effective technique to produce potable water in which ions migrate through an ion exchange membrane. Here we present the preparation of composite membranes based on sulfonated polyaniline (SPANI) as ion conducting filler and sulfonated poly ether sulfone (SPES) as polymer matrix with different concentration of SPANI (1 to 20 wt %). Composite membranes have been subjected to electrodialysis experiment for analyzing the performance towards salt removal. Composite membranes show good performance towards salt removal. S‐SP‐5 membrane has been observed best among the prepared membranes in terms of physicochemical properties as well as the ED performance. Energy consumption for S‐SP‐5 membrane is 0.99 kWh kg−1and the salt removal efficiency is 76.28%. Thus SPANI/SPES based composite membranes have been effective for salt removal from water using electrodialysis.