| Adsorption of ruthenium ions on activated charcoal： influence of temperature on the kinetics of the adsorption process |
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| 作者姓名： | Qadeer R |
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| 作者单位： | Pakistan Atomic |
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| 摘 要： | INTRODUCTION Time dependence study of metal ions adsorptionon solids provides valuable information on the ad-sorption process and its mechanism. Rate of metalions adsorption process is dependent on a number offactors such as agitation of the solution, the state ofmetal ions in solution, concentration of metal ions andtemperature (Benes and Majer, 1980). Temperature isthe parameter generally ignored in most adsorptionstudies (Bangash and Hanif, 1992; Afzal et al., 1993;Atun and Kil…
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| 关 键 词： | 钌离子 化学活性 木炭 吸附作用 温度 动力学 原子能工业 |
Adsorption of ruthenium ions on activated charcoal: influence of temperature on the kinetics of the adsorption process |
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| Qadeer R.Adsorption of ruthenium ions on activated charcoal: influence of temperature on the kinetics of the adsorption process[J].Journal of Zhejiang University Science,2005,6(5):353-356. |
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| Authors: | Qadeer Riaz |
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| Institution: | Pakistan Atomic Energy Commission, Islamabad, Pakistan. drriazqadeer@yahoo.com |
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| Abstract: | Influence of temperature on ruthenium adsorption on activated charcoal from 3 mol/L HNO3 solutions was investigated in the temperature range of 288 K to 308 K. It was observed that the rise in temperature increases the adsorption of ruthenium ions on activated charcoal and follows the kinetics of first order rate law with rate constant values 0.0564-0.0640 min-1 in the temperature range of 288 K to 308 K respectively. The activation energy for the adsorption process was found to be 1.3806kJ/mol. Various thermodynamics quantities namely △H, △S and △G were computed from the equilibrium constant KC values. The results indicated a positive heat of adsorption, a positive △S and a negative △G. |
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| Keywords: | Ruthenium Activated charcoal Adsorption Kinetics Thermodynamic parameters Nitric acid solution |
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