电渗析
海水淡化
结垢
膜污染
膜
化学
离聚物
离子交换
化学工程
芯(光纤)
图层(电子)
离子
色谱法
材料科学
有机化学
生物化学
工程类
复合材料
聚合物
共聚物
作者
Juan Wang,Manru Liu,Zihao Feng,Jinshuai Liu,Xiuhua Li,Yigang Yu
出处
期刊:Desalination
[Elsevier]
日期:2024-05-01
卷期号:576: 117334-117334
标识
DOI:10.1016/j.desal.2024.117334
摘要
To investigate the effects of di-ions structure of the core layer ionomer on anti-protein fouling and electrodialysis (ED) desalination performance of the tailored anion exchange membranes (AEMs), three highly conductive structural-controlled ionomers containing aliphatic bridging cage quaternary di-ammoniums, aliphatic liner quaternary di-ammoniums, and aromatic quaternary di-ammoniums respectively have been synthesized. With the help of the previously established bi-directional in-situ interpenetration method, a series of double-sided anti-fouling AEMs were successfully fabricated from the gradient cross-linked anti-fouling thin layer CA(2% SA-0.10Ca) and the tailored ionomers. These AEMs have basic and electrochemical properties suitable for ED applications, and significant anti-protein fouling ability. The results of the ED desalination evaluations at high current density with salted egg white confirm further that DABCO-MeI-CA having aliphatic-bridging-cage-di-ions with the best electrochemical properties displays the best ED performance (desalination rate (DR) = 32.16 %, energy consumption (EC) = 0.27 kWh kg−1) and good ED stability. Its ED performance is better than that of commercial AMX, with an increase of 20.74 % in DR and a reduction of 34.15 % in EC. Protein biuret detections verify no protein-through-membrane pollution occurred in the tests. The properties of DABCO-MeI-CA are promising for high current density ED desalination of organic macromolecule-contaminated salted systems.
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