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Citation: LUO He-Ming, CAO Guo-Pu, ZHANG Jian-Qiang, ZHANG De-Yi, ZHAO Xia, DONG Peng. Adsorption of Copper Ion to Coke-based Material for Carbon Absorption[J]. Chinese Journal of Applied Chemistry, ;2010, 27(2): 211-214. doi: 10.3724/SP.J.1095.2010.90068 shu

Adsorption of Copper Ion to Coke-based Material for Carbon Absorption

a. School of Petrochemical Engineering, Lanzhou University of Technology, Lanzhou 730050;
b. Juli Construction Company of Second Production Department, Changqing Petroleum, Qingyang

Received Date: 20 January 2009
Revised Date: 28 March 2009

Coke-based carbon absorption material was prepared by nitric acid pre-oxidation of coke powder followed by zinc chloride chemical activation. The absorption characteristics were studied for the coke-based carbon absorbing copper ions in water. The results show that the absorption equilibrium time was 90 min,and the absorption accorded with the Langmuir model. In addition,the results of △H^θ>0,△G^θ<0 at different temperatures reveal that the adsorption was a spontaneous endothermic process,and that △S^θ>0 indicates that the order reduced and the chaos increased for the copper ion adsorption the solid-liquid interface. Finally,the experimental data were fitted to second order kinetics model and the correlation coefficient(R²) was 0.9991,suggesting that the adsorption followed second order kinetics.
- coke-based carbon absorption material,
- copper ion,
- adsorption model,
- adsorption thermodynamics,
- adsorption kinetics
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