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http://dx.doi.org/10.9713/kcer.2020.58.3.466

The Salt Removal Efficiency Characteristics of Carbon Electrodes Using Fabric Current Collector with High Tensile Strength in a Capacitive Deionization Process  

Seong, Du-Ri (Department of Chemical Engineering, Chungbuk National University)
Kim, Dae Su (Department of Chemical Engineering, Chungbuk National University)
Publication Information
Korean Chemical Engineering Research / v.58, no.3, 2020 , pp. 466-473 More about this Journal
Abstract
Fabric current collector can be a promising electrode material for Capacitive Deionization (CDI) system that can achieve energy-efficient desalination of water. The one of the most attractive feature of the fabric current collector is its high tensile strength, which can be an alternative to the low mechanical strength of the graphite foil electrode. Another advantage is that the textile properties can easily make shapes by simple cutting, and the porosity and inter-fiber space which can assist facile flow of the aqueous medium. The fibers used in this study were made of woven structures using a spinning yarn using conductive LM fiber and carbon fiber, with tensile strength of 319 MPa, about 60 times stronger than graphite foil. The results were analyzed by measuring the salt removal efficiency by changing the viscosity of electrode slurry, adsorption voltage, flow rate of the aqueous medium, and concentration of the aqueous medium. Under the conditions of NaCl 200 mg/L, 20ml/min and adsorption voltage 1.5 V, salt removal efficiency of 43.9% in unit cells and 59.8% in modules stacked with 100 cells were shown, respectively. In unit cells, salt removal efficiency increases as the adsorption voltage increase to 1.3, 1.4 and 1.5 V. However, increasing to 1.6 and 1.7 V reduced salt removal efficiency. However, the 100-cell-stacked module showed a moderate increase in salt removal efficiency even at voltages above 1.5 V. The salt removal rate decreased when the flow rate of the feed was increased, and the salt removal rate decreased when the concentration of the feed was increased. This work shows that fabric current collector can be an alternative of a graphite foil.
Keywords
Capacitive deionization; CDI; Fabric current collector; Desalination;
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1 Trainham, J. A. and Newman, J., "A Flow-Through Porous Electrode Model: Application to Metal-Ion Removal from Dilute Streams," J. Electrochem. Soc., 124, 1528(1997).   DOI
2 Postel, S. L., Daily, G. C. and Ehrlich, P. R., "Human Appropriation of Renewable Fresh Water," Science, 271, 785-788(1996).   DOI
3 Blaedel, W. J. and Wang, J. C., "Flow Electrolysis on a Reticulated Vitreous Carbon Electrode," Anal. Chem., 51, 799-802(1979).   DOI
4 Matlosz, M. and Newman, J., J. Electrochem. Soc., 133, 1850-1886(1986).   DOI
5 Welgemoed, T. J. and Schutte, C. F., "Capacitive Deionization $Technology^{TM}$: An Alternative Desalination Solution," Desalination, 183, 327-340(2005).   DOI
6 Oren, Y., "Capacitive Deionization (CDI) for Desalination and Water Treatment-Past, Present and Future (a review)," Desalination, 228, 10-29(2008).   DOI
7 Anderson, M. A., Cudero, A. L. and Palma, "Capacitive Deionization as an Electrochemical Means of Saving Energy and Delivering Clean Water. Comparison to present desalination practices: Will it compete?," Electrochimica Acta, 55, 3845-3856(2010).   DOI
8 Zou, L. Morris, G. and Qi, D., "Using Activated Carbon Electrode in Electrosorptive Deionisation of Brackish Water," Desalination, 225, 329-340(2008).   DOI
9 Biesheuvel, P. M., "J. Colloid Thermodynamic Cycle Analysis for Capacitive Deionization," Interface Sci., 332, 258-264(2009).   DOI
10 Park, B. H., Kim, Y. J., Park, J. S. and Choi, J. H., J. Ind. "Facile Synthesis of Carbon-Coated Silicon/Graphite Spherical Composites for High-Performance Lithium-Ion Batteries," ACS Appl. Mater. Interfaces, 17, 717-722(2011).
11 Gabelich, C. J., Tran, T. D. and Suffet, I. H., "MEL Environ. Electrosorption of Inorganic Salts from Aqueous Solution Using Carbon Aerogels," Sci. Technol., 36, 3010-3019(2002).   DOI
12 Li, H., Zou, L., Pan, L. and Sun, Z., "Environ Novel Graphene-Like Electrodes for Capacitive Deionization," Sci. Technol., 44, 8692-8697(2010).   DOI
13 Lee, B. R., Jeong, I. J. and Park, S. G., "J. Effects of N & P Treatment Based on Liquid Organic Materials for Capacitive Deionization (CDI), " Korean Electrochem. Soc., 16, 123-128(2013).   DOI
14 Li, H., Pan, L., Lu, T., Zhan, Y., Nie, C. and Sun, Z., "A Comparative Study on Electrosorptive Behavior of Carbon Nanotubes and Graphene for Capacitive Deionization," J. Electroanal. Chem., 653, 40-44(2011).   DOI
15 Kim, C., Srimuk, P., Lee, J., Fleischmann, S., Aslan, M. and Presser, V., Carbon, 122, 329-335(2017).   DOI
16 Young, J. J., Myoung, H. L., Hae, W. C. and Kee, H. L., "Thermal Characteristics of a Wet Clutch," Dept of Textile Eng., 121(3), 610-617(1999).
17 Moon, D. C., Lee, K. H., Kim, C. S., Kim, D. H., Kim, M. R., Shin, C. H., Park, I. Y., Nam, S. Y. and Lee, C. G., "J. Micropore Analysis and Adsorption Characteristics of Activated Carbon Fibers," Anal. Sci. Technol., 13, 89-95(2000).
18 Park, C. O., Oh, J. S. and Lim, J. W., "Anti-fouling Graphenebased Membranes for Effective Water Desalination," Membrane Journal, 28, 271-283(2018).   DOI
19 Youngmee, B., "A Study on the Characteristics of Natural Preservative Agent-treated Fabrics for Textile Cultural Properties Preservation," Science Journal, 25, 197-206(2009).