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聚(丙烯酸-co-丙烯酰胺)/膨润土/腐植酸钠三维网络凝胶吸附剂对Cd2+吸附性能研究

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郑易安, 王金磊, 王爱勤. 聚(丙烯酸-co-丙烯酰胺)/膨润土/腐植酸钠三维网络凝胶吸附剂对Cd2+吸附性能研究[J]. 环境工程学报, 2009, 3(9): 1719-1724.
引用本文: 郑易安, 王金磊, 王爱勤. 聚(丙烯酸-co-丙烯酰胺)/膨润土/腐植酸钠三维网络凝胶吸附剂对Cd2+吸附性能研究[J]. 环境工程学报, 2009, 3(9): 1719-1724.
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Zheng Yian, Wang Jinlei, Wang Aiqin. Adsorption performance of Cd(Ⅱ) from aqueous solution onto poly(acrylic acid-co-acrylamide)/montmorillonite/sodium humate with three-dimensional cross-linked networks[J]. Chinese Journal of Environmental Engineering, 2009, 3(9): 1719-1724.
Citation: Zheng Yian, Wang Jinlei, Wang Aiqin. Adsorption performance of Cd(Ⅱ) from aqueous solution onto poly(acrylic acid-co-acrylamide)/montmorillonite/sodium humate with three-dimensional cross-linked networks[J]. Chinese Journal of Environmental Engineering, 2009, 3(9): 1719-1724.
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聚(丙烯酸-co-丙烯酰胺)/膨润土/腐植酸钠三维网络凝胶吸附剂对Cd2+吸附性能研究

  • 1.

    中国科学院兰州化学物理研究所，兰州 730000

  • 2.

    中国科学院研究生院, 北京 100049

  • 基金项目:

    江苏省科技厅太湖专项(BS2007118)

    甘肃省科技支撑资助项目(0804GKCA03A)

  • 中图分类号: TQ424.3

Adsorption performance of Cd(Ⅱ) from aqueous solution onto poly(acrylic acid-co-acrylamide)/montmorillonite/sodium humate with three-dimensional cross-linked networks

  • 1.

    Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000,China

  • 2.

    2 Graduate School of the Chinese Academy of Sciences, Beijing 100049,China

  • Fund Project:

  • 摘要: 制备了一种聚(丙烯酸-co-丙烯酰胺)/膨润土/腐植酸钠三维网络凝胶吸附剂，重点考察了吸附剂对Cd2+吸附的pH依赖性、吸附动力学和吸附等温线。结果表明，Cd2+溶液pH值对吸附容量有较大影响。在pH＝8、吸附时间30 min、Cd2+溶液初始浓度0.02 mol/L和吸附剂用量0.10 g的条件下，吸附剂对Cd2+的饱和吸附量可达294.7 mg/g。与膨润土相比，三维网络凝胶吸附剂具有更高的吸附容量和更快的吸附速率。
    Abstract: In current work, a novel poly (acrylic acid-co-acrylamide)/montmorillonite/sodium humate with threedimensional cross-linked networks was prepared and its efficacy for removing Cd(Ⅱ) from aqueous solution was evaluated. The effects of the initial pH value of Cd(Ⅱ) solution on the adsorption capacity, as well as adsorption kinetics and isotherms were investigated. The results indicate that the adsorption capacity of as-prepared adsorbent for Cd(Ⅱ) is pHdependent. The saturated adsorption capacity of asprepared adsorbent for Cd(Ⅱ) is found to be 294.7 mg/g under the following conditions: pH=8, contact time 30 min, initial Cd(Ⅱ) concentration 0.02 mol/L and amount of adsorbent 0.10 g. Compared to Ca-montmorillonite, gel adsorbent presents higher adsorption capacity and faster adsorption rate.
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  • 收稿日期:  2009-01-09

聚(丙烯酸-co-丙烯酰胺)/膨润土/腐植酸钠三维网络凝胶吸附剂对Cd2+吸附性能研究

  • 1. 中国科学院兰州化学物理研究所，兰州 730000
  • 2. 中国科学院研究生院, 北京 100049
  • 收稿日期:  2009-01-09
基金项目:

江苏省科技厅太湖专项(BS2007118)

甘肃省科技支撑资助项目(0804GKCA03A)

摘要: 制备了一种聚(丙烯酸-co-丙烯酰胺)/膨润土/腐植酸钠三维网络凝胶吸附剂，重点考察了吸附剂对Cd2+吸附的pH依赖性、吸附动力学和吸附等温线。结果表明，Cd2+溶液pH值对吸附容量有较大影响。在pH＝8、吸附时间30 min、Cd2+溶液初始浓度0.02 mol/L和吸附剂用量0.10 g的条件下，吸附剂对Cd2+的饱和吸附量可达294.7 mg/g。与膨润土相比，三维网络凝胶吸附剂具有更高的吸附容量和更快的吸附速率。

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