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LIU Guo, XU Xiaofang, LI Zhike, CHEN Xiliang, XU Lisha. Removal pathway of nitrate from water by nano-iron-carbon and its kinetics[J]. Chinese Journal of Environmental Engineering, 2018, 12(4): 1033-1045. doi: 10.12030/j.cjee.201710012
Citation: LIU Guo, XU Xiaofang, LI Zhike, CHEN Xiliang, XU Lisha. Removal pathway of nitrate from water by nano-iron-carbon and its kinetics[J]. Chinese Journal of Environmental Engineering, 2018, 12(4): 1033-1045. doi: 10.12030/j.cjee.201710012
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Removal pathway of nitrate from water by nano-iron-carbon and its kinetics

  • 1.

    Key Laboratory of Synergetic Control and Joint Remediation for Soil & Water Pollution, State Environmental Protection, State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, College of Environment, Chengdu University of Technology, Chengdu 610059,China

  • Accepted Date: 07/10/2017
    Available Online: 22/04/2018
    Fund Project:
  • In order to study the reaction pathway and removal kinetics of nitrate from nano-zero-valent-iron (NZVI) system, the microelectrolysis of nitrates was studied by studying the reduction or adsorption of nitrates by NZVI, activated carbon (AC), and NZVI/AC. The change of nano-iron and nitrogen species and the interaction between NO3- and Fe2+was discussed. The results show that synergistic effect of NZVI/AC was involved in the removal of nitrate and the final product is mainly NH4+. The pseudo second order adsorption kinetic model can provide good fitting results for the removal of NO3- and the Langmuir-Hinshelwood model for the ammonia generation in the case of NZVI/AC limiting or excess.
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Removal pathway of nitrate from water by nano-iron-carbon and its kinetics

  • Accepted Date: 07/10/2017
  • Available Online: 22/04/2018
Fund Project:

Abstract: In order to study the reaction pathway and removal kinetics of nitrate from nano-zero-valent-iron (NZVI) system, the microelectrolysis of nitrates was studied by studying the reduction or adsorption of nitrates by NZVI, activated carbon (AC), and NZVI/AC. The change of nano-iron and nitrogen species and the interaction between NO3- and Fe2+was discussed. The results show that synergistic effect of NZVI/AC was involved in the removal of nitrate and the final product is mainly NH4+. The pseudo second order adsorption kinetic model can provide good fitting results for the removal of NO3- and the Langmuir-Hinshelwood model for the ammonia generation in the case of NZVI/AC limiting or excess.

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