Studies on the Desalination of NaCl Solution with Activated Carbon Coating Electrodes by Electrosorption and Kinetic Analysis

Abstract:

Article Preview

In this paper a promising electrosorption approach called capacitive deionization(CDI) was discussed to relieve the crisis of water resources shortage.A simple CDI cell reactor was fabricated to study the performance of electrosorption experiments.A mixture containing activated carbon powder(ACP),binder poly vinylidene fluoride(PVDF) and conductive graphite powder at the mass ratio of 8:1:1(%) was dissolved in di-methylacetamide(DMAc) to form a slurry,then the slurry was cast on the current collector to manufacture activated carbon coating electrodes. The surface morphology and electrochemical performance of obtained electrodes were characterized using SEM and cyclic voltammetry(CV).From the SEM image,the electrodes were irregular grid-like porous materials,and both ACP and PVDF binder were bound together.The results of CV indicated that the electric double layer was existing and the specific capacitance was calculated.The adsorption rate and capacity of NaCl onto activated carbon coating electrodes at different bias potentials were measured and the electrosorption kinetics were also investigated.The kinetic analysis demonstrated that the electrosorption of NaCl on the activated carbon coating electrodes conformed to pseudo-first-order kinetics model.

Info:

Periodical:

Advanced Materials Research (Volumes 581-582)

Edited by:

Jimmy (C.M.) Kao, Wen-Pei Sung and Ran Chen

Pages:

743-746

Citation:

Y. Zhao et al., "Studies on the Desalination of NaCl Solution with Activated Carbon Coating Electrodes by Electrosorption and Kinetic Analysis", Advanced Materials Research, Vols. 581-582, pp. 743-746, 2012

Online since:

October 2012

Export:

Price:

$41.00

[1] Yoram Oren, Capacitive deionization (CDI) for desalination and water treatment-past, present and future (a review), J. Desalination. 228 (2008) 10-29.

DOI: https://doi.org/10.1016/j.desal.2007.08.005

[2] Marc A. Anderson, Capacitive deionization as an electrochemical means of saving energy and delivering clean water, J. Electrochimica Acta. 55 (2010) 3845-3856.

DOI: https://doi.org/10.1016/j.electacta.2010.02.012

[3] Jae-Hwan Choi, Fabrication of a carbon electrode using activated carbon powder and application to the capacitive deionization process, J. S & P Tech. 70 (2010) 362-366.

DOI: https://doi.org/10.1016/j.seppur.2009.10.023

[4] Li Min Chang, Preparation and electrosorption desalination performance of activated carbon electrode with titania, Desalination. 270 (2011) 285-290.

DOI: https://doi.org/10.1016/j.desal.2011.01.008

[5] Welgemoeda T J, Capacitive Deionization TechnologyTM: An alternative desalination solution, J. Desalination. 183 (2005) 327-340.

DOI: https://doi.org/10.1016/j.desal.2005.02.054

[6] Ji-Young Choi, A carbon electrode fabricated using a poly(vinylidene fluoride) binder controlled the Faradaic reaction of carbon powder, J. Journal of Industrial and Engineering Chemistry. 16 (2010) 401-405.

DOI: https://doi.org/10.1016/j.jiec.2009.08.005

[7] C. Tsouris, Mesoporous Carbon for Capacitive Deionization of Saline Water, J. Environmental Science&Technology. 45 (2011) 10243-10249.

DOI: https://doi.org/10.1021/es201551e

[8] Linda Zou, Gayle Morris, Using activated carbon electrode in electrosorptive deionization of brackish water, J. Desalination. 225 (2008) 329-340.

DOI: https://doi.org/10.1016/j.desal.2007.07.014

[9] CHEN Zhaolin, SONG Cunyi, SUN Xiaowei, Progress in the research on the electrosorption desalination technology and its application, Industrial Water Treatment. 31 (2010) 11-14.

[10] Haibo Li, Kinetics and thermodynamics study for electrosorption of NaCl onto carbon nanotubes and carbon nanofibers electrodes, J. Chemical Physics Letters. 485 (2010) 161-166.

DOI: https://doi.org/10.1016/j.cplett.2009.12.031

[11] Shuo Wang, Equilibrium and kinetic studies on the removal of NaCl from aqueous solutions by electrosorption on carbon nanotube electrodes, J. S & P Tech. 58 (2007) 12-16.

[12] Zhaolin Chen, Kinetic and isotherm studies on the electrosorption of NaCl from aqueous solutions by activated carbon electrodes, J. Desalination. 267 (2011) 239-243.

DOI: https://doi.org/10.1016/j.desal.2010.09.033