| Zeolite P synthesis based on fly ash and its removal of Cu(Ⅱ) and Ni(Ⅱ) ions |
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| 作者姓名： | Yong Liu Guodong Wang Lu Wang Xianlong Li Qiong Luo Ping Na |
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| 作者单位： | 1.School of Environmental Science and Engineering, Tianjin University, Tianjin 300350, China;2.School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China |
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| 基金项目： | 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) |
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| 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.
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| 关 键 词： | Class C fly ash Zeolite P Kinetics Thermodynamics |
| 收稿时间： | 30 January 2018 |
Zeolite P synthesis based on fly ash and its removal of Cu(II) and Ni(II) ions |
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| Yong Liu,Guodong Wang,Lu Wang,Xianlong Li,Qiong Luo,Ping Na.Zeolite P synthesis based on fly ash and its removal of Cu(II) and Ni(II) ions[J].Chinese Journal of Chemical Engineering,2019,27(2):341-348. |
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| Authors: | Yong Liu Guodong Wang Lu Wang Xianlong Li Qiong Luo Ping Na |
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| Affiliation: | 1.School of Environmental Science and Engineering, Tianjin University, Tianjin 300350, China;2.School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China |
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| 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. |
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| Keywords: | Class C fly ash Zeolite P Kinetics Thermodynamics |
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