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Vol. 26 No. 23 (2014)

Copyright (c) 2014 Hui Zhou1, Wen Chen1, Zhi Yue Gao1, Dong Chen2

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This work is licensed under a Creative Commons Attribution 4.0 International License.

Removal of Fluoride from Aqueous Media by Zirconium Modified Zeolite

https://doi.org/10.14233/ajchem.2014.17100
Hui Zhou1
1College of Materials and Chemistry & Chemical Engineering, Chengdu University of Technology, Mineral Chemistry Key Laboratory of Sichuan Higher Education Institution, Chengdu 610059, Sichuan Province, P.R. China 2Water Quality Testing Center of Xuzhou Tongshan Water Company, Xuzhou 221116, Jiangsu Province, P.R. China *Corresponding author: Tel: +86 13699077607; E-mail: chenwen2010@foxmail.com
Wen Chen1
1College of Materials and Chemistry & Chemical Engineering, Chengdu University of Technology, Mineral Chemistry Key Laboratory of Sichuan Higher Education Institution, Chengdu 610059, Sichuan Province, P.R. China 2Water Quality Testing Center of Xuzhou Tongshan Water Company, Xuzhou 221116, Jiangsu Province, P.R. China *Corresponding author: Tel: +86 13699077607; E-mail: chenwen2010@foxmail.com
Zhi Yue Gao1
1College of Materials and Chemistry & Chemical Engineering, Chengdu University of Technology, Mineral Chemistry Key Laboratory of Sichuan Higher Education Institution, Chengdu 610059, Sichuan Province, P.R. China 2Water Quality Testing Center of Xuzhou Tongshan Water Company, Xuzhou 221116, Jiangsu Province, P.R. China *Corresponding author: Tel: +86 13699077607; E-mail: chenwen2010@foxmail.com
Dong Chen2
1College of Materials and Chemistry & Chemical Engineering, Chengdu University of Technology, Mineral Chemistry Key Laboratory of Sichuan Higher Education Institution, Chengdu 610059, Sichuan Province, P.R. China 2Water Quality Testing Center of Xuzhou Tongshan Water Company, Xuzhou 221116, Jiangsu Province, P.R. China *Corresponding author: Tel: +86 13699077607; E-mail: chenwen2010@foxmail.com

Corresponding Author(s) : Hui Zhou1

Asian Journal of Chemistry, Vol. 26 No. 23 (2014)

Abstract

In this study, the fluoride adsorption potential of novel zirconium modified zeolite composite was explored. Batch adsorption experiments were conducted to study and optimize various operational parameters, such as adsorbent dose, contact time, pH, temperature and initial fluoride concentration. It was observed that the zirconium modified zeolite work effectively in neutral solution and showed a maximum adsorption rate of 97.62 % at an initial fluoride concentration of 10 μg/mL, it is much better than raw zeolite of 32.94 % and acid modified zeolite of 57.05 %. The experimental data fitted well into Freundlich adsorption isotherm and follows pseudo-second-order kinetics. Thermodynamic study suggests that fluoride adsorption on zirconium modified zeolite is reasonably spontaneous and an endothermic process. The nature and morphology of sorbents was characterized by using XRD, BET and SEM analysis. From the experimental results, it may be inferred that chemical modification enhances the fluoride removal efficiency of raw zeolite and zirconium modified zeolite works as an effective adsorbent for defluoridation of water.

Keywords

Defluoridation Adsorption isotherm Zeolite.
Zhou1, H., Chen1, W., Yue Gao1, Z., & Chen2, D. (2014). Removal of Fluoride from Aqueous Media by Zirconium Modified Zeolite. Asian Journal of Chemistry, 26(23), 8062–8068. https://doi.org/10.14233/ajchem.2014.17100
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