Magnetite-based Biochar Coupled with Binary Oxidants for the Effective Removal of Mixed Dye from Wastewater 


Vol. 23,  No. 2, pp. 450-462, Feb.  2022
10.1007/s12221-022-3641-2


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  Abstract

Decolorization and organic degradation of wastewater containing multiple dyes are still challenging in wastewater treatment. Magnetic biochar coupled with advanced oxidation is a potential solution to this issue. In this study, a series of magnetite-based biochar composites (Fe3O4@C) was prepared and compared for the removal of mixed dyes, including methyl orange (MO), rhodamine B (RhB), methylene blue (MB), and an organic macromolecule, humic acid (HA). The pyrolysis of watermelon rinds followed by precipitation of Fe3O4 onto the biochar was selected as the optimum method to prepare an adsorbent and catalyst to couple binary oxidants (hypochlorite and persulfate) for color and total organic carbon removal. Persulfate was prone to degrade HA and MB, while hypochlorite was inclined to oxidize MO and RhB. Fe3O4@C exhibited better dye removal performance in coupling with binary oxidants than with a single oxidant. For mixed dye solutions with an initial concentration of 50 mg/l for each dye, the highest TOC (57.24

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  Cite this article

[IEEE Style]

M. Yu, H. Li, K. Li, Y. Li, F. Liu, G. Zhang, T. Xiao, P. Zhang, H. Zhang, J. Long, "Magnetite-based Biochar Coupled with Binary Oxidants for the Effective Removal of Mixed Dye from Wastewater," Fibers and Polymers, vol. 23, no. 2, pp. 450-462, 2022. DOI: 10.1007/s12221-022-3641-2.

[ACM Style]

Mingxia Yu, Huosheng Li, Keke Li, Yuting Li, Fengli Liu, Gaosheng Zhang, Tangfu Xiao, Ping Zhang, Hongguo Zhang, and Jianyou Long. 2022. Magnetite-based Biochar Coupled with Binary Oxidants for the Effective Removal of Mixed Dye from Wastewater. Fibers and Polymers, 23, 2, (2022), 450-462. DOI: 10.1007/s12221-022-3641-2.

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