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| 壳聚糖/三乙醇胺-银离子印迹膜的吸附性能研究 |
| Study on Adsorption Performance of CTS/TEA-Silver Ion-imprinted Membrane |
| Received:July 06, 2016 |
| DOI： |
| 中文关键词: 冶金物理化学 银离子印迹膜 热力学 动力学 选择性 |
| 英文关键词: metallurgical physical chemistry silver ion imprinted membrane thermodynamics dynamics selectivity |
| 基金项目: |
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| 中文摘要: |
| 研究了壳聚糖/三乙醇胺-银离子印迹膜(Ag(I)-IICTM)的吸附性能。结果表明，Ag(I)-IICTM对银离子的吸附符合Langumir等温方程，为单分子层可逆化学吸附，其最大吸附容量为505 mg/g；吸附过程符合拟二级动力学方程，属颗粒内扩散。吸附条件研究显示，最佳吸附温度和酸度分别为50℃和pH=6，该印迹膜对Ag(I)的选择性远大于常见的Cu2+、Pb2+和Zn2+离子。 |
| 英文摘要: |
| The adsorption properties of chitosan/triethanolamine silver ion imprinted membrane (Ag(I)-IICTM) were studied. The results showed that the adsorption of silver ions on Ag(I)-IICTM was reversible chemical adsorption of monomolecular layer with a maximum adsorption capacity of 505 mg/g, following the Langumir isotherm equation. The adsorption process was in accordance with a pseudo-two order kinetic equation, revealing intraparticle diffusion. The optimum adsorption temperature and acidity were 50℃ and pH=6.0. The selectivity of this imprinted membrane to Ag+ was much higher than the selectivity to Cu2+, Pb2+ and Zn2+. |
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