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Vol. 27 No. 6 (2015): Vol 27 Issue 6

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Electrosorption of Hardness Ions from Water with Activated Carbon Cloth Electrodes

https://doi.org/10.14233/ajchem.2015.17748
Bingjie Dong
College of Environmental and Chemical Engineering, Tianjin Polytechnic University, Tianjin 300387, P.R China
Zhaohui Zhang
College of Environmental and Chemical Engineering, Tianjin Polytechnic University, Tianjin 300387, P.R China
Liang Wang
College of Environmental and Chemical Engineering, Tianjin Polytechnic University, Tianjin 300387, P.R China
Hongwei Zhang
College of Environmental and Chemical Engineering, Tianjin Polytechnic University, Tianjin 300387, P.R China
Cheng Chang
College of Environmental and Chemical Engineering, Tianjin Polytechnic University, Tianjin 300387, P.R China

Corresponding Author(s) : Bingjie Dong

jjd263@163.com

Asian Journal of Chemistry, Vol. 27 No. 6 (2015): Vol 27 Issue 6

Abstract

In this study, removal of hardness from water using a capacitive deionization system with activated carbon cloth electrodes was investigated. The dynamic study indicated that the hardness removal process followed the pseudo-first-order kinetics model and more than 90 % of the hardness ions could be removed during the first 0.5 h of the electrosorption process. Two types of regeneration methods were compared and the results showed that compared reversing electrodes' polarities, the regenerating method of short circuit of electrodes was more effective for activated carbon cloth electrodes regeneration. The hardness removal performance of activated carbon cloth electrodes could remain stable after five consecutive cycles of electrosorption/regeneration.

Keywords

Capacitive deionization Electrosorption Hardness removal ,Activated carbon cloth electrode
Dong, B., Zhang, Z., Wang, L., Zhang, H., & Chang, C. (2015). Electrosorption of Hardness Ions from Water with Activated Carbon Cloth Electrodes. Asian Journal of Chemistry, 27(6), 2082–2086. https://doi.org/10.14233/ajchem.2015.17748
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