| 离子交换法去除有机二胺吸收剂PA-A中的SO42-平衡及动力学研究 |
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| 引用本文： | 陈虹伟.离子交换法去除有机二胺吸收剂PA-A中的SO42-平衡及动力学研究[J].安徽化工,2012,38(5):43-47. |
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| 作者姓名： | 陈虹伟 |
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| 作者单位： | 安徽省化工设计院,安徽合肥,230009 |
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| 摘 要： | 研究了大孔阴离子交换树脂对有机二胺吸收剂PA-A中SO42-的吸附相平衡和动力学行为。结果表明,D296型树脂对SO42-具有良好的吸附选择性,333K下的吸附容量可达100.20mg.g-1。Langmuir-Freundlich模型能较好地描述吸附交换行为。吸附过程符合Lagergren一级动力学模型。液膜扩散为吸附速率的主要控制步骤。
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| 关 键 词： | 硫酸盐 阴离子交换树脂 吸附平衡 动力学 |
Equilibrium and Kinetics of Adsorption for SO4^2- by Anion Exchange Resin from Organic Diamine PA-A Aqueous Solution |
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| CHEN Hong-wei.Equilibrium and Kinetics of Adsorption for SO4^2- by Anion Exchange Resin from Organic Diamine PA-A Aqueous Solution[J].Anhui Chemical Industry,2012,38(5):43-47. |
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| Authors: | CHEN Hong-wei |
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| Affiliation: | CHEN Hong-wei (Anhui Design Institute of Chemical Industry, Hefei 230009, China) |
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| Abstract: | The adsorption behavior of SO4^2- in the organic diamine PA-A aqueous solution by anion exchange resin has been studied, and the mechanism of thermodynamics and kinetics was analyzed. The experimental results showed that D296 resin had higher selective adsorption and the equilibrium adsorption capacity of SO4^2- onto D296 was about 100.20 mg·g^-1 at 333K. The adsorption process could be well described by the Langmuir-Freundlich isotherm model. The kinetic data fitted with the first-order rate kinetics model, and the adsorption rate-limiting step was liquid film diffusion. |
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| Keywords: | sulfate anion exchange resin adsorption equilibrium kinetics |
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