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Enhanced Removal of Malachite Green Using Calcium-Functionalized Magnetic Biochar

Author

Listed:
  • Pengjie Wang

    (Heilongjiang Ecological Environment Monitoring Center, Harbin 150000, China)

  • Wei Chen

    (Heilongjiang Ecological Environment Monitoring Center, Harbin 150000, China)

  • Rui Zhang

    (Heilongjiang Ecological Environment Monitoring Center, Harbin 150000, China)

  • Yanfeng Xing

    (Heilongjiang Ecological Environment Monitoring Center, Harbin 150000, China)

Abstract

To efficiently remove malachite green (MG), a novel calcium-functionalized magnetic biochar (Ca/MBC) was fabricated via a two-step pyrolysis method. Iron-containing oxides endowed the target complexes with magnetic properties, especially the chemotactic binding ability with MG, and the addition of calcium significantly changed the morphology of the material and improved its adsorption performance, especially the chemotactic binding ability with MG, which could be confirmed through FTIR, XPS, and adsorption experiments. Electrostatic adsorption, ligand exchange, and hydrogen bonding acted as essential drivers for an enhanced adsorption process, and the maximum theoretical adsorption capacity was up to 12,187.57 mg/g. Ca/MBC maintained a higher adsorption capacity at pH = 4–12, and after five adsorption–desorption cycles, the adsorption capacity and adsorption rate of MG remained at 1424.2 mg/g and 71.21%, highlighting the advantages of Ca/MBC on adsorbing MG. This study suggests that biochar can be modified by a green synthesis approach to produce calcium-functionalized magnetic biochar with excellent MG removal capacity. The synthetic material can not only remove pollutants from water but also provide an efficient way for soil remediation.

Suggested Citation

  • Pengjie Wang & Wei Chen & Rui Zhang & Yanfeng Xing, 2022. "Enhanced Removal of Malachite Green Using Calcium-Functionalized Magnetic Biochar," IJERPH, MDPI, vol. 19(6), pages 1-14, March.
    • Handle: RePEc:gam:jijerp:v:19:y:2022:i:6:p:3247-:d:767871
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    References listed on IDEAS

    as
    1. Anwar Ameen Hezam Saeed & Noorfidza Yub Harun & Suriati Sufian & Ahmer Ali Siyal & Muhammad Zulfiqar & Muhammad Roil Bilad & Arvind Vagananthan & Amin Al-Fakih & Aiban Abdulhakim Saeed Ghaleb & Najib , 2020. "Eucheuma cottonii Seaweed-Based Biochar for Adsorption of Methylene Blue Dye," Sustainability, MDPI, vol. 12(24), pages 1-15, December.
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