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镇江斜发沸石对氨氮的吸附动力学及热力学研究

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钱吉彬, 杨朗, 张华, 刘柳. 镇江斜发沸石对氨氮的吸附动力学及热力学研究[J]. 环境工程学报, 2011, 5(2): 327-330.
引用本文: 钱吉彬, 杨朗, 张华, 刘柳. 镇江斜发沸石对氨氮的吸附动力学及热力学研究[J]. 环境工程学报, 2011, 5(2): 327-330.
shu
Qian Jibin, Yang Lang, Zhang Hua, Liu Liu. Research on adsorption kinetics and thermodynamics of natural Zhenjiang clinoptilolite for ammonia nitrogen[J]. Chinese Journal of Environmental Engineering, 2011, 5(2): 327-330.
Citation: Qian Jibin, Yang Lang, Zhang Hua, Liu Liu. Research on adsorption kinetics and thermodynamics of natural Zhenjiang clinoptilolite for ammonia nitrogen[J]. Chinese Journal of Environmental Engineering, 2011, 5(2): 327-330.
shu

镇江斜发沸石对氨氮的吸附动力学及热力学研究

  • 1.

    南京工业大学材料科学与工程学院,南京 210009

  • 2.

    镇江市自来水公司,镇江 212000

  • 基金项目:

    江苏省省级环保科技项目资助（2006003）

  • 中图分类号: X703

Research on adsorption kinetics and thermodynamics of natural Zhenjiang clinoptilolite for ammonia nitrogen

  • 1.

    College of Materials Science and Engineering, Nanjing University of Technology, Nanjing 210009, China

  • 2.

    Zhenjiang Water Supply General Company, Zhenjiang 212000, China

  • Fund Project:

  • 摘要: 采用静态平衡法,开展了镇江斜发沸石对水中氨氮的吸附动力学和热力学研究。结果表明,吸附量随反应温度升高而增加,斜发沸石对氨氮吸附符合Freundlich等温线方程,对氨氮吸附实验数据与准二级动力学模型拟合更好(R2>0.998), 热力学参数吸附焓变ΔH=18.26 kJ/mol,熵变ΔS=0.0632 kJ/kmol,对氨氮吸附为吸热反应,自发过程。实验结果对于开发利用镇江斜发沸石作为去除氨氮的吸附剂具有重要意义。
    Abstract: A batch method was used to investigate the kinetics and thermodynamics of ammonia nitrogen on natural clinoptilolite. The results showed that efficiency of adsorption increased with the temperature. Freundlich model agreed very well with experimental data. The pseudo second-order kinetic model provided excellent kinetic data fitting(R2>0.998).The enthalpy change of the adsorption was 18.26 kJ/mol and its entropy change was 0.0632 kJ/kmol. An examination of the thermodynamic parameters showed that the adsorption of ammonia nitrogen ion by clinoptilolite was a process occurring spontaneously. The process was also found to be endothermic. The results indicated that there was a significant potential for the natural Zhenjiang clinoptilolite as an adsorbent material for ammonia nitrogen.
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  • 收稿日期:  2010-01-11
钱吉彬, 杨朗, 张华, 刘柳. 镇江斜发沸石对氨氮的吸附动力学及热力学研究[J]. 环境工程学报, 2011, 5(2): 327-330.
引用本文: 钱吉彬, 杨朗, 张华, 刘柳. 镇江斜发沸石对氨氮的吸附动力学及热力学研究[J]. 环境工程学报, 2011, 5(2): 327-330.
shu
Qian Jibin, Yang Lang, Zhang Hua, Liu Liu. Research on adsorption kinetics and thermodynamics of natural Zhenjiang clinoptilolite for ammonia nitrogen[J]. Chinese Journal of Environmental Engineering, 2011, 5(2): 327-330.
Citation: Qian Jibin, Yang Lang, Zhang Hua, Liu Liu. Research on adsorption kinetics and thermodynamics of natural Zhenjiang clinoptilolite for ammonia nitrogen[J]. Chinese Journal of Environmental Engineering, 2011, 5(2): 327-330.
shu

镇江斜发沸石对氨氮的吸附动力学及热力学研究

  • 1. 南京工业大学材料科学与工程学院,南京 210009
  • 2. 镇江市自来水公司,镇江 212000
  • 收稿日期:  2010-01-11
基金项目:

江苏省省级环保科技项目资助（2006003）

摘要: 采用静态平衡法,开展了镇江斜发沸石对水中氨氮的吸附动力学和热力学研究。结果表明,吸附量随反应温度升高而增加,斜发沸石对氨氮吸附符合Freundlich等温线方程,对氨氮吸附实验数据与准二级动力学模型拟合更好(R2>0.998), 热力学参数吸附焓变ΔH=18.26 kJ/mol,熵变ΔS=0.0632 kJ/kmol,对氨氮吸附为吸热反应,自发过程。实验结果对于开发利用镇江斜发沸石作为去除氨氮的吸附剂具有重要意义。

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