2009 Volume 3 Issue 2
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Wang Jing, Chen Guanghui, Chen Jian, Tao Xiancong, Zheng Jianzhong. Investigation on aqueous Hg(Ⅱ) adsorption properties by thiol-modified activated carbon[J]. Chinese Journal of Environmental Engineering, 2009, 3(2): 219-222.
Citation: Wang Jing, Chen Guanghui, Chen Jian, Tao Xiancong, Zheng Jianzhong. Investigation on aqueous Hg(Ⅱ) adsorption properties by thiol-modified activated carbon[J]. Chinese Journal of Environmental Engineering, 2009, 3(2): 219-222.
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Investigation on aqueous Hg(Ⅱ) adsorption properties by thiol-modified activated carbon

  • 1.

    State Key Laboratory of Pollution Control and Resources Reuse, School of the Environment, Nanjing University, Nanjing 210093

  • 2.

    Modern Analysis Center, Nanjing University, Nanjing 210093

  • Received Date: 11/08/2008
    Accepted Date: 20/06/2008
    Fund Project:
  • A thiol-modified activated carbon (AC-SH) was prepared by esterification between thioacetic acid and oxygencontaining functional groups on activated carbon (AC). Aqueous Hg(Ⅱ) adsorption properties by AC-SH were studied through batch experiments. Results showed that 2.31 mmol/g thiol was grafted onto AC, and the Qmax was increased to 556 mg/g. The optimal pH for Hg adsorption was in the range of 3～7, although the removal rate was generally over 90% in a wide range of pH tested (1.5～10.5). The existence of Cl- in water can significantly decrease Hg(Ⅱ) adsorption due to the formation of Hg-Cl complex, which has relatively low affinity to AC-SH.
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    沈阳化工大学材料科学与工程学院 沈阳 110142

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Investigation on aqueous Hg(Ⅱ) adsorption properties by thiol-modified activated carbon

  • Received Date: 11/08/2008
  • Accepted Date: 20/06/2008
Fund Project:

Abstract: A thiol-modified activated carbon (AC-SH) was prepared by esterification between thioacetic acid and oxygencontaining functional groups on activated carbon (AC). Aqueous Hg(Ⅱ) adsorption properties by AC-SH were studied through batch experiments. Results showed that 2.31 mmol/g thiol was grafted onto AC, and the Qmax was increased to 556 mg/g. The optimal pH for Hg adsorption was in the range of 3～7, although the removal rate was generally over 90% in a wide range of pH tested (1.5～10.5). The existence of Cl- in water can significantly decrease Hg(Ⅱ) adsorption due to the formation of Hg-Cl complex, which has relatively low affinity to AC-SH.

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