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Preparation and DEA removal performance of iron-modified activated carbon

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Abstract

Activated carbon (AC) was modified in this study using the impregnation roasting method for the preparation of iron-modified AC (Fe/AC), and the diethylamine (DEA) removal efficiency of Fe/AC was characterized by scanning electron microscopy, energy-dispersive spectroscopy, X-ray diffraction, and Brunauer–Emmett–Teller specific surface area analysis. The orthogonal experiment showed that the optimum conditions for the preparation of Fe/AC were as follows: calcination temperature, 500 °C; Fe2(SO4)3 concentration, 0.3 mol L−1; and calcination time, 3 h. The atomic percentage of Fe and S increased by 3.87 times and 1.23 times compared with that of AC, respectively. After modification, Fe(III) was aggregated on the Fe/AC carrier, and a new crystal phase was generated inside the Fe/AC. The specific surface area, pore volume, and internal porosity of Fe/AC were significantly increased. The highest DEA adsorption capacity of Fe/AC (3.55 mg g−1) was ten times that of AC. The DEA adsorption on Fe/AC followed the quasi-second-order kinetic model, which involved both physical and chemical adsorption. The DEA adsorption on Fe/AC was in accordance with the Langmuir adsorption isotherm.

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Acknowledgements

This research was supported by Open Project of State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology (QA201519) and partially supported by National Scientific Fund and Project of Youth Fund (51408397) and Science and Technology Project of Shanxi Provincial Department of Housing and Construction (163140324-Q). The authors would like to thank the reviewers for positive criticism to improve the quality of the manuscript.

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Authors and Affiliations

  1. State Key Laboratory of Urban Water Resource and Environment (SKLUWRE), School of Municipal and Environmental Engineering, Harbin Institute of Technology, Harbin, 150090, Heilongjiang Province, China

    H. Li & F. Cui

  2. College of Environmental Science and Engineering, Taiyuan University of Technology, Yuci University Campus, Jinzhong, 030600, Shanxi Province, China

    H. Li, F. Zhang, J. Cui & J. Cheng

  3. Innovation Center for Postgraduate Education in Municipal Engineering of Shanxi Province, Yuci University Campus, Jinzhong, 030600, Shanxi Province, China

    F. Zhang & J. Cui

  4. Zhong Chi Water Co., LTD., Beijing, 100192, China

    Q. Meng

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  1. H. Li
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  2. F. Cui
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  3. F. Zhang
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  4. J. Cui
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  5. Q. Meng
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Correspondence to H. Li.

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Editorial responsibility: M. Abbaspour.

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Li, H., Cui, F., Zhang, F. et al. Preparation and DEA removal performance of iron-modified activated carbon. Int. J. Environ. Sci. Technol. 16, 2927–2936 (2019). https://doi.org/10.1007/s13762-018-1854-0

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  • DOI: https://doi.org/10.1007/s13762-018-1854-0

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