| 巯基树脂对金属离子的吸附性能(Ⅱ) |
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| 引用本文： | 黄海兰,曲荣君.巯基树脂对金属离子的吸附性能(Ⅱ)[J].离子交换与吸附,2005,21(3):271-276. |
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| 作者姓名： | 黄海兰 曲荣君 |
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| 作者单位： | 青岛大学师范学院,青岛,266071;烟台师范学院化学与材料科学学院,烟台,264025;天津大学材料科学与工程学院,天津,300072 |
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| 摘 要： | 研究了自合成的巯基树脂对重金属离子Ag 、Hg2 、Cr3 的吸附容量、吸附动力学、等温吸附过程等静态吸附性能,影响吸附的因素和吸附机理.结果表明,该树脂对上述3种离子吸附能力强,吸附量分别达6.56mmol/g、3.25mmol/g、2.10mmol/g.树脂对各重金属离子等温吸附在实验浓度范围内符合Langmuir或Freundlich方程.吸附机理研究表明,巯基与金属离子发生了离子交换和配位反应,化学吸附起支配作用;另外树脂对Ag 、Hg2 吸附过程中存在一定的氧化还原现象.
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| 关 键 词： | 巯基树脂 吸附性能 Ag+ Hg2+ Cr3+ |
| 文章编号： | 1001-5493(2005)03-0271-06 |
| 修稿时间： | 2004年10月9日 |
STUDY ON ADSORPTION PROPERTIES FOR Ag+, Hg2+, Cr3+ OF SULFHYDRYL-RESIN |
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| HUANG Hailan,QU Rongjun.STUDY ON ADSORPTION PROPERTIES FOR Ag+, Hg2+, Cr3+ OF SULFHYDRYL-RESIN[J].Ion Exchange and Adsorption,2005,21(3):271-276. |
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| Authors: | HUANG Hailan QU Rongjun |
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| Abstract: | The sulfhydryl-resin was prepared and its static adsorption properties for metal ions (Ag+, Hg2+, Cr3+) such as capacities, kinetics and isotherm were studied. The factors to influence adsorption process and mechanism of adsorption were also investigated. The results indicate that this resin has higher adsorption capacities for Ag+, Hg2+, Cr3+. Their adsorption capacities are 6.56mmol/g, 3.25mmol/g, and 2.10mmol/g. The adsorption isotherms approximately fit the Langmuir or Freundlich equation within the range of experimental concentrations. The research on mechanism shows that ion exchange and complication reaction have occurred between resin and the metal ions, and chemical adsorption is dominant. |
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| Keywords: | Ag Hg2 Cr3 |
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