| D113大孔树脂吸附Ni~(2+)的动力学与热力学研究 |
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| 引用本文： | 苏会东,黄维华.D113大孔树脂吸附Ni~(2+)的动力学与热力学研究[J].环境科学与技术,2009,32(10). |
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| 作者姓名： | 苏会东 黄维华 |
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| 作者单位： | 沈阳理工大学环境与化学工程学院,辽宁,沈阳,110168 |
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| 摘 要： | 研究了D113大孔树脂吸附Ni2+的动力学与热力学的特性。动力学研究表明,在298K温度下,D113大孔树脂对Ni2+的吸附符合拟一级动力学方程和拟二级动力学方程,颗粒扩散过程为吸附的控速步骤。热力学研究表明,在实验温度下,D113大孔树脂对Ni2+的吸附符合Langmuir等温方程,吸附焓变ΔHθ=15.1306kJ/mol,熵变ΔSθ=0.1002kJ/mol.K,反应吉布斯自由能ΔGθ随温度升高向负方向增加。热力学参数表明吸附过程为吸热和自发的。
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| 关 键 词： | 大孔树脂 吸附 动力学 热力学 吸附等温线 |
Kinetics and Thermodynamics of Sorption of Ni~(2+) Macroporous Adsorption Resin D113 |
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| SU Hui-dong,HUANG Wei-hua.Kinetics and Thermodynamics of Sorption of Ni~(2+) Macroporous Adsorption Resin D113[J].Environmental Science and Technology,2009,32(10). |
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| Authors: | SU Hui-dong HUANG Wei-hua |
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| Institution: | School of Environmental and Chemical Engineering;Shenyang University of Technology;Shenyang 110168;China |
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| Abstract: | Adsorption kinetics and thermodynamics of Ni2+ in solution was studied.Kinetic studies indicated that Ni2+ adsorption onto resin D113 conforms to pseudo-first-order equation and pseudo-second-order equation.The adsorption was controlled by pore diffusion.In the experimental temperature,thermodynamic studies indicated that Ni2+ adsorption onto resin D113 conforms to Langmuir adsorption isotherm.Heat of adsorption value of 15.1306kJ/mol indicated the radioactive nature of adsorption process.A decrease of Gibb... |
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| Keywords: | macroporous resin absorption kinetics thermodynamic thermodynamics isotherm |
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