| 氯酚在D301树脂上吸附机理的研究 |
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| 引用本文： | 李晓弢,潘丙才,孟凡伟,陈新庆,潘丙军,陈金龙. 氯酚在D301树脂上吸附机理的研究[J]. 离子交换与吸附, 2005, 21(3): 209-215 |
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| 作者姓名： | 李晓弢 潘丙才 孟凡伟 陈新庆 潘丙军 陈金龙 |
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| 作者单位： | 污染控制与资源化研究国家重点实验室,南京大学环境学院,南京,210093 |
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| 摘 要： | 研究了酸性条件下氯酚在大孔弱碱树脂D301上的吸附机理.研究表明,在一定的吸附质浓度及pH值下,D301树脂对对氯酚和邻氯酚的吸附量与溶液平衡浓度之间存在良好的线性关系,吸附过程类似于固相萃取过程,且分配系数与相应pH值下X射线光电子能谱(XPS)测得的树脂上自由叔胺基团含量呈线性关系.
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| 关 键 词： | 氯酚 吸附机理 D301树脂 pH值 |
| 文章编号： | 1001-5493(2005)03-0209-07 |
| 修稿时间： | 2004-12-21 |
STUDY OF SORPTION MECHANISM OF o-CHLOROPHENOLAND p-CHLOROPHENOL ONTO D301 |
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| Li Xiaotao,PAN Bingcai,MENG Fanwei,CHEN Xinqing,PAN Bingjun,CHEN Jinlong. STUDY OF SORPTION MECHANISM OF o-CHLOROPHENOLAND p-CHLOROPHENOL ONTO D301[J]. Ion Exchange and Adsorption, 2005, 21(3): 209-215 |
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| Authors: | Li Xiaotao PAN Bingcai MENG Fanwei CHEN Xinqing PAN Bingjun CHEN Jinlong |
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| Abstract: | In the present study X-ray photoelectron spectroscopy (XPS) was adopted to elucidate sorption mechanism of o-chlorophenol and p-chlorophenol onto a weak anion exchanger D301. The distribution of specific forms of amino groups on D301 was obtained and effect of free tertiary amine group on phenol sorption onto D301 was discussed. The result indicate that less free amino group on D301 caused by external solution with lower pH leads to less sorptive capacity of o-chlorophenol and p-chlorophenol respectively. Under the experimental conditions sorption of chlorophenols onto D301 can be explained by solid extraction mechanism and the coefficient of distribution has a linear relationship with the content of free amino group on D301. |
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| Keywords: | XPS |
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