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Catalytic Degradation of Diatrizoate by Persulfate Activation with Peanut Shell Biochar-Supported Nano Zero-Valent Iron in Aqueous Solution

Author

Listed:
  • Jian Xu

    (State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China
    Nanjing Institute of Environmental Sciences, Ministry of Environmental Protection, Nanjing 210042, China)

  • Xueliang Zhang

    (Nanjing Institute of Environmental Sciences, Ministry of Environmental Protection, Nanjing 210042, China
    College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China)

  • Cheng Sun

    (State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China)

  • Huan He

    (School of Environment, Nanjing Normal University, Nanjing 210023, China)

  • Yuxuan Dai

    (State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing 210023, China)

  • Shaogui Yang

    (School of Environment, Nanjing Normal University, Nanjing 210023, China)

  • Yusuo Lin

    (Nanjing Institute of Environmental Sciences, Ministry of Environmental Protection, Nanjing 210042, China)

  • Xinhua Zhan

    (College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China)

  • Qun Li

    (Nanjing Institute of Environmental Sciences, Ministry of Environmental Protection, Nanjing 210042, China)

  • Yan Zhou

    (Nanjing Institute of Environmental Sciences, Ministry of Environmental Protection, Nanjing 210042, China)

Abstract

An emerging pollutant, diatrizoate (DTZ) has been frequently detected in aqueous solution. Unique reticular peanut shell biochar (BC)-supported nano zero-valent iron (nZVI) composite (nZVI/BC) was successfully synthesized and used as a catalyst for activating persulfate (PS) to promote the removal of DTZ. The structure and morphology of the nanocomposite materials were characterized by scanning electron microscopy, X-ray diffraction, Brunauer-Emmett-Teller measurements, and Fourier transform infrared spectroscopy. The degradation of DTZ (20 mg L −1 ) was achieved by activating PS with the nanocomposite material. The removal of DTZ reached nearly 100% using 25 mM PS and 0.45 g L −1 nZVI/2BC (mass ratio of nZVI and BC at 1:2) nanocomposite material at pH 3.0 and 25 °C. Influencing factors, such as dosages of nZVI/2BC and PS, temperature, and pH were also investigated. The mechanisms of PS activation with nZVI/2BC were discussed, including BC property, electron transfer, and the identification of free radicals in the reaction. The findings demonstrated that nZVI/BC-PS (peanut shell BC-supported nZVI activating PS) is a promising material for the treatment of refractory organic pollutants.

Suggested Citation

  • Jian Xu & Xueliang Zhang & Cheng Sun & Huan He & Yuxuan Dai & Shaogui Yang & Yusuo Lin & Xinhua Zhan & Qun Li & Yan Zhou, 2018. "Catalytic Degradation of Diatrizoate by Persulfate Activation with Peanut Shell Biochar-Supported Nano Zero-Valent Iron in Aqueous Solution," IJERPH, MDPI, vol. 15(9), pages 1-18, September.
    • Handle: RePEc:gam:jijerp:v:15:y:2018:i:9:p:1937-:d:168031
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    Citations

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    Cited by:

    1. Meiling Han & Jin Zhang & Wen Chu & Gongfu Zhou & Jiahao Chen, 2020. "Surface-Modified Sewage Sludge-Derived Carbonaceous Catalyst as a Persulfate Activator for Phenol Degradation," IJERPH, MDPI, vol. 17(9), pages 1-14, May.
    2. Yaxuan Gao & Wenran Gao & Haonan Zhu & Haoran Chen & Shanshan Yan & Ming Zhao & Hongqi Sun & Junjie Zhang & Shu Zhang, 2022. "A Review on N-Doped Biochar for Oxidative Degradation of Organic Contaminants in Wastewater by Persulfate Activation," IJERPH, MDPI, vol. 19(22), pages 1-25, November.

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