| 壳聚糖/三乙醇胺-银离子印迹膜的吸附性能研究 |
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| 引用本文： | 杨淑玮,杨俊伟,李程碑.壳聚糖/三乙醇胺-银离子印迹膜的吸附性能研究[J].贵金属,2017,38(2):58-62. |
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| 作者姓名： | 杨淑玮 杨俊伟 李程碑 |
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| 作者单位： | 陕西省石油化工研究设计院,西安,710054 |
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| 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Cu~(2+)、Pb~(2+)和Zn~(2+)离子。
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| 关 键 词： | 冶金物理化恘 银离子印迹膜 热力恘 动力恘 恒择性 |
| 收稿时间： | 2016/7/6 0:00:00 |
Study on Adsorption Performance of CTS/TEA-Silver Ion-imprinted Membrane |
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| YANG Shuwei,YANG Junwei and LI Chengbei.Study on Adsorption Performance of CTS/TEA-Silver Ion-imprinted Membrane[J].Precious Metals,2017,38(2):58-62. |
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| Authors: | YANG Shuwei YANG Junwei and LI Chengbei |
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| Abstract: | 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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| Keywords: | metallurgical physical chemistry silver ion imprinted membrane thermodynamics dynamics selectivity |
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