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Separation Science and Technology Volume 46, 2011 - Issue 16
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Adsorption of Cu2+ Cations from Aqueous Solution by S-doped TiO2

Daorong Li School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou, ChinaCorrespondence[email protected]
,
Xia Wang School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou, China
,
Dongjin Wan School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou, China
,
Suhua Duan School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou, China
,
Chang Liu School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou, China
,
Kunfeng Zhang School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou, China
&
Baoling Fang School of Chemistry and Chemical Engineering, Henan University of Technology, Zhengzhou, China
 show all
Pages 2539-2548 | Received 01 Mar 2011, Accepted 16 Jun 2011, Published online: 15 Nov 2011
 
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Abstract

S-doped TiO2 as a novel adsorbent for Cu2+ cations removal from aqueous solutions was synthesized by simple sol-gel process. Removal of Cu2+ cations from aqueous solutions was investigated with particular reference to the effects of initial Cu2+ cations concentration, pH-value, adsorbent dosage, and temperature on adsorption. It was found that the maximum adsorption capacity was 96.35 mg g−1 at 328 K. The adsorption equilibrium isotherms and the kinetic data were well described by the Langmuir and pseudo-second-order kinetic models, respectively. The high uptake capability of S-doped TiO2 makes it a potentially attractive adsorbent for the removal of heavy metal pollutants from aqueous solution.

ACKNOWLEDGEMENTS

The authors would like to thank the Natural Science Foundation Council of China (20271007 and 20331010), and Specialized Research Fund for the Doctoral Program of Higher Education (20030007014) for financial support.

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