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Received January 28, 2015
Accepted July 10, 2015
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This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits
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Removal characteristics of Cd(II) ions from aqueous solution on ordered mesoporous carbon
Linhang Lu
Haibo Zhao
Lu Yan
Guowei Wang
Yulin Mao
Xin Wang
Kai Liu
Xiufang Liu
Qian Zhao†
Tingshun Jiang
School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu, China
qianzhao@ujs.edu.cn
Korean Journal of Chemical Engineering, October 2015, 32(10), 2161-2167(7), 10.1007/s11814-015-0150-7
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Abstract
Ordered mesoporous carbon (CMK-3) was synthesized using SBA-15 mesoporous molecular sieve as a template and sucrose as carbon source. The materials were characterized by XRD, TEM and N2 physical adsorption technique. The resulting CMK-3 was used as adsorbent to remove Cd(II) ions from aqueous solution. The effect of pH, contact time and temperature on adsorption process was investigated in batch experiments. The results showed that the removal percentage could reach ca. 90% at the conditions of initial Cd(II) ions concentration of 20 mg/L, dose of 20mg, pH 6.5, contact time of 3h and 293K. Langmuir and Freundlich models were employed to describe the adsorption equilibrium. The kinetics data were described by the pseudo-first-order and pseudo-second-order models, respectively. The adsorption isotherm was well fitted to the Langmuir model, and the adsorption process was well described by the pseudo-second-order kinetic model.
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References
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Wang FY, Wang H, Ma JW, J. Hazard. Mater., 177(1-3), 300 (2010)
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Huang ZH, Zheng XY, Lv W, Wang M, Yang QH, Kang FY, Langmuir, 27(12), 7558 (2011)
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Srivastava VC, Mall ID, Mishra IM, Chem. Eng. Process., 47, 1269 (2008)
