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Adsorption of Pyraclostrobin in Water by Bamboo-Derived and Pecan Shell-Derived Biochars

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  • Kongtan Yang

    (College of Plant Protection, Jilin Agricultural University, Changchun 130118, China
    Key Laboratory for Pesticide Residue Detection, Ministry of Agriculture and Rural Affairs, Institute of Agro-Products Safety and Nutrition, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
    State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China)

  • Xumi Wang

    (Key Laboratory for Pesticide Residue Detection, Ministry of Agriculture and Rural Affairs, Institute of Agro-Products Safety and Nutrition, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
    State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
    College of Food and Pharmaceutical Sciences, Ningbo University, Ningbo 315211, China)

  • Huanqi Wu

    (Key Laboratory for Pesticide Residue Detection, Ministry of Agriculture and Rural Affairs, Institute of Agro-Products Safety and Nutrition, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
    State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
    College of Food and Pharmaceutical Sciences, Ningbo University, Ningbo 315211, China)

  • Nan Fang

    (Key Laboratory for Pesticide Residue Detection, Ministry of Agriculture and Rural Affairs, Institute of Agro-Products Safety and Nutrition, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
    State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China)

  • Yuxue Liu

    (State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
    Institute of Environment Resource Soil and Fertilizer, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China)

  • Changpeng Zhang

    (Key Laboratory for Pesticide Residue Detection, Ministry of Agriculture and Rural Affairs, Institute of Agro-Products Safety and Nutrition, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
    State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China)

  • Xiaobin Yu

    (College of Plant Protection, Jilin Agricultural University, Changchun 130118, China)

  • Xiangyun Wang

    (Key Laboratory for Pesticide Residue Detection, Ministry of Agriculture and Rural Affairs, Institute of Agro-Products Safety and Nutrition, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
    State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China)

Abstract

Pyraclostrobin is a potent extensive-spectrum fungicide widely used in agricultural production but poses a substantial threat to aquatic life. Therefore, there is an urgent need to remove pyraclostrobin from the ecological environment. This study reports the adsorption of pyraclostrobin in water using pecan-shell biochar, bamboo biochar, and their deashing products. The kinetics and isotherms indicate that the pseudo-second-order kinetics and Freundlich model are the most suitable for both types of biochar. The thermodynamic results demonstrate that the adsorption process of biochar is spontaneous and exothermic. Combined with characterization and factor analysis experiments, it is revealed that the adsorption of pyraclostrobin on biochar is attributed to various mechanisms, including pore filling, hydrophobic interactions, π-π and p-π interactions, and hydrogen bonding. At the initial concentration of 0.5 mg·L −1 , the adsorption rates of pyraclostrobin of the four biochar samples (<0.075 mm) reached 67–80% within 5 min. These findings suggest that both pecan-shell and bamboo biochars are efficient pyraclostrobin adsorbents, with the former showing better outcomes. There is still an adsorption rate of >97% after 5 cycles of adsorption by two types of biochars. Deashing significantly enhances the adsorption efficiency of pecan biochar, but it has an insignificant effect on bamboo biochar. This study will aid in the selection of cost-effective and ecofriendly adsorbents to reduce the environmental risk associated with pyraclostrobin.

Suggested Citation

  • Kongtan Yang & Xumi Wang & Huanqi Wu & Nan Fang & Yuxue Liu & Changpeng Zhang & Xiaobin Yu & Xiangyun Wang, 2023. "Adsorption of Pyraclostrobin in Water by Bamboo-Derived and Pecan Shell-Derived Biochars," Sustainability, MDPI, vol. 15(19), pages 1-17, October.
    • Handle: RePEc:gam:jsusta:v:15:y:2023:i:19:p:14585-:d:1255526
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    References listed on IDEAS

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    1. Katarzyna Ignatowicz & Jakub Łozowicki & Bożena Łozowicka & Jacek Piekarski, 2023. "Treatment of Agricultural Wastewater Containing Pesticides by Hydrophytic Method as a Preliminary Method of Water Recovery," Energies, MDPI, vol. 16(2), pages 1-15, January.
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