SCI和EI收录∣中国化工学会会刊

Chinese Journal of Chemical Engineering ›› 2019, Vol. 27 ›› Issue (2): 341-348.DOI: 10.1016/j.cjche.2018.03.032

• Separation Science and Engineering • 上一篇    下一篇

Zeolite P synthesis based on fly ash and its removal of Cu(Ⅱ) and Ni (Ⅱ) ions

Yong Liu1, Guodong Wang1, Lu Wang1, Xianlong Li1, Qiong Luo1, Ping Na2   

  1. 1 School of Environmental Science and Engineering, Tianjin University, Tianjin 300350, China;
    2 School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China
  • 收稿日期:2018-02-28 修回日期:2018-07-31 出版日期:2019-02-28 发布日期:2019-03-18
  • 通讯作者: Yong Liu
  • 基金资助:

    Supported by the National Natural Science Foundation of China (51478308), the Scientific Research Special Fund of Marine Public Welfare Industry (201405008) and the Natural Science Foundation of Tianjin (14JCYBJC23300)

Zeolite P synthesis based on fly ash and its removal of Cu(Ⅱ) and Ni (Ⅱ) ions

Yong Liu1, Guodong Wang1, Lu Wang1, Xianlong Li1, Qiong Luo1, Ping Na2   

  1. 1 School of Environmental Science and Engineering, Tianjin University, Tianjin 300350, China;
    2 School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China
  • Received:2018-02-28 Revised:2018-07-31 Online:2019-02-28 Published:2019-03-18
  • Contact: Yong Liu
  • Supported by:

    Supported by the National Natural Science Foundation of China (51478308), the Scientific Research Special Fund of Marine Public Welfare Industry (201405008) and the Natural Science Foundation of Tianjin (14JCYBJC23300)

摘要: Zeolite P was synthesized through hydrothermal method based on a kind of Class C fly ash (FA). X-ray diffraction (XRD), scanning electron microscopy (SEM), and Brunauer-Emmett-Teller (BET) were used to analyze and characterize the synthetic sample. The kinetics and thermodynamics of copper and nickel ions removed by the zeolite samples were experimentally explored in detail. The results of kinetic treatment showed the second-order exchange second-order saturation model (SESSM) can well describe the removal process of copper ions, while the first-order empirical kinetic model (FEKM) is the best kinetic model for nickel ions. Langmuir and Freundlich isotherms were used to fit the equilibrium concentration of Cu(Ⅱ) or Ni(Ⅱ) under certain conditions. Whether for copper or nickel ion, the Langmuir model is in good agreement with the experimental equilibrium concentration. The apparent theoretical removal capacities for Cu(Ⅱ) and Ni(Ⅱ) can reach to 138.1 mg·g-1 and 77.0 mg·g-1, respectively.

关键词: Class C fly ash, Zeolite P, Kinetics, Thermodynamics

Abstract: Zeolite P was synthesized through hydrothermal method based on a kind of Class C fly ash (FA). X-ray diffraction (XRD), scanning electron microscopy (SEM), and Brunauer-Emmett-Teller (BET) were used to analyze and characterize the synthetic sample. The kinetics and thermodynamics of copper and nickel ions removed by the zeolite samples were experimentally explored in detail. The results of kinetic treatment showed the second-order exchange second-order saturation model (SESSM) can well describe the removal process of copper ions, while the first-order empirical kinetic model (FEKM) is the best kinetic model for nickel ions. Langmuir and Freundlich isotherms were used to fit the equilibrium concentration of Cu(Ⅱ) or Ni(Ⅱ) under certain conditions. Whether for copper or nickel ion, the Langmuir model is in good agreement with the experimental equilibrium concentration. The apparent theoretical removal capacities for Cu(Ⅱ) and Ni(Ⅱ) can reach to 138.1 mg·g-1 and 77.0 mg·g-1, respectively.

Key words: Class C fly ash, Zeolite P, Kinetics, Thermodynamics