Membrane-spacer assembly for flow-electrode capacitive deionization

被引:31
作者
Lee, Ki Sook [1 ,2 ]
Cho, Younghyun [1 ]
Choo, Ko Yeon [1 ,2 ]
Yang, SeungCheol [3 ]
Han, Moon Hee [2 ]
Kim, Dong Kook [1 ]
机构
[1] Korea Inst Energy Res, Separat & Convers Mat Lab, 152 Gajeong Ro, Daejeon 305343, South Korea
[2] Chungnam Natl Univ, Grad Sch Energy Sci & Technol, 99 Daehak Ro, Daejeon 304764, South Korea
[3] Korea Inst Energy Res, Marine Energy Convergence & Integrat Lab, 200 Haemajihaean Ro, Jeju Si 63357, Jeju Do, South Korea
关键词
Capacitive deionization; Ion-exchange membrane; SiO(2 )particle; Polymer multilayer coating; Membrane-spacer assembly; DOUBLE-LAYER; DESALINATION; ENERGY; WATER; OPERATION; TEMPLATES; PLANT;
D O I
10.1016/j.apsusc.2017.10.021
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Flow-electrode capacitive deionization (FCDI) is a desalination process designed to overcome the limited desalination capacity of conventional CDI systems due to their fixed electrodes. Such a FCDI cell system is comprised of a current collector, freestanding ion-exchange membrane (IEM), gasket, and spacer for flowing saline water. To simplify the cell system, in this study we combined the membrane and spacer into a single unit, by coating the IEM on a porous ceramic structure that acts as the spacer. The combination of membrane with the porous structure avoids the use of costly freestanding IEM. Furthermore, the FCDI system can be readily scaled up by simply inserting the IEM-coated porous structures in between the channels for flow electrodes. However, coating the IEM on such porous ceramic structures can cause a sudden drop in the treatment capacity, if the coated IEM penetrates the ceramic pores and prevents these pores from acting as saline flow channels. To address this issue, we blocked the larger microscale pores on the outer surface with SiO(2 )and polymeric multilayers. Thus, the IEM is coated only onto the top surface of the porous structure, while the internal pores remain empty to function as water channels. (C) 2017 Elsevier B.V. All rights reserved.
引用
收藏
页码:437 / 442
页数:6
相关论文
共 34 条
[1]   Capacitive deionization as an electrochemical means of saving energy and delivering clean water. Comparison to present desalination practices: Will it compete? [J].
Anderson, Marc A. ;
Cudero, Ana L. ;
Palma, Jesus .
ELECTROCHIMICA ACTA, 2010, 55 (12) :3845-3856
[2]   Theory of Water Desalination by Porous Electrodes with Immobile Chemical Charge [J].
Biesheuvel, P. M. ;
Hamelers, H. V. M. ;
Suss, M. E. .
COLLOID AND INTERFACE SCIENCE COMMUNICATIONS, 2015, 9 :1-5
[3]   Theory of membrane capacitive deionization including the effect of the electrode pore space [J].
Biesheuvel, P. M. ;
Zhao, R. ;
Porada, S. ;
van der Wal, A. .
JOURNAL OF COLLOID AND INTERFACE SCIENCE, 2011, 360 (01) :239-248
[4]   Membrane capacitive deionization [J].
Biesheuvel, P. M. ;
van der Wal, A. .
JOURNAL OF MEMBRANE SCIENCE, 2010, 346 (02) :256-262
[5]   Dynamic Adsorption/Desorption Process Model for Capacitive Deionization [J].
Biesheuvel, P. M. ;
van Limpt, B. ;
van der Wal, A. .
JOURNAL OF PHYSICAL CHEMISTRY C, 2009, 113 (14) :5636-5640
[6]  
Cho Y., 2017, ENERGY ENV SCI
[7]   Elastoplastic Inverse Opals as Power-Free Mechanochromic Sensors for Force Recording [J].
Cho, Younghyun ;
Lee, Su Yeon ;
Ellerthorpe, Lindsay ;
Feng, Gang ;
Lin, Gaojian ;
Wu, Gaoxiang ;
Yin, Jie ;
Yang, Shu .
ADVANCED FUNCTIONAL MATERIALS, 2015, 25 (38) :6041-6049
[8]   Pore size effect on the formation of polymer nanotubular structures within nanoporous templates [J].
Cho, Younghyun ;
Lee, Chanhui ;
Hong, Jinkee .
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, 2014, 443 :195-200
[9]   Layer-by-layer assembled stimuli-responsive nanoporous membranes [J].
Cho, Younghyun ;
Lim, Jaehoon ;
Char, Kookheon .
SOFT MATTER, 2012, 8 (40) :10271-10278
[10]   Polymer Nanotubules Obtained by Layer-by-Layer Deposition within AAO-Membrane Templates with Sub-100-nm Pore Diameters [J].
Cho, Younghyun ;
Lee, Woo ;
Jhon, Young Kuk ;
Genzer, Jan ;
Char, Kookheon .
SMALL, 2010, 6 (23) :2683-2689