An electrochemically switched ion exchange process with self-electrical-energy recuperation for desalination

被引：17
|
作者：
Wang, Zhongde [1 ]
Tian, Sihang [1 ]
Niu, Junjian [1 ]
Kong, Wei [1 ]
Lin, Jianying [1 ]
Hao, Xiaogang [1 ]
Guan, Guoqing [2 ]
机构：
[1] Taiyuan Univ Technol, Dept Chem Engn, Taiyuan 030024, Peoples R China
[2] Hirosaki Univ, North Japan Res Inst Sustainable Energy NJRISE, 2-1-3 Matsubara, Matsubara, Aomori 0300813, Japan
来源：
SEPARATION AND PURIFICATION TECHNOLOGY | 2020年 / 239卷
基金：
对外科技合作项目（国际科技项目）; 中国国家自然科学基金;
关键词：
Desalination; Electrochemically switched ion exchange; Self-electrical-energy recuperation; Energy consumption; Ion exchange capacity; MEMBRANE CAPACITIVE DEIONIZATION; REMOVAL EFFICIENCY; FILM SYSTEM; CARBON; WATER; PERFORMANCE; ELECTRODE; FABRICATION; NANOCOMPOSITE; SEPARATION;
D O I：
10.1016/j.seppur.2020.116521
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
Desalination is an important way to provide fresh water for our life. In this study, an electrochemically switched ion exchange (ESIX) process based on self-electrical-energy recuperation concept was designed and realized for desalination, in which the self-generated electricity could provide the required energy for the ESIX process. As iron hexacyanoferrate (FeHCF) and polypyrrole (PPy) were used as electroactive Na+ and Cl- ion exchange materials respectively, NaCl was successfully removed from the aqueous solution with a low energy consumption of 0.14 kWh.m(-3) and a high ion exchange capacity of 79.6 mg.g(-1). Moreover, the system also exhibited an excellent stability. It is expected that such an ESIX process with self-electrical-energy recuperation could enable more efficient desalination applications.
引用
收藏
页数：8
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