Abstract
Dye wastewater discharged from industries has caused serious environmental problems. The recent decade has witnessed adsorption technology emerging as an advanced dye wastewater treatment method with great potential Therefore, we fabricated two kinds of magnetic porous adsorbents (HSF and HSVF) with different specific surface areas and activity sites. Both of which exhibit excellent performance with remarkable dye adsorption capacities, especially HSVF. We further investigated their adsorption kinetic and isotherm in detail. Therein, HSVF showed a nice desorption capacity, and it could be recycled rapidly by magnetism, which exhibited the advantages of effective, easy operation, and low cost. In addition, their adsorption kinetic and isotherm were further studied and compared in detail. The results revealed that introducing strong active sites could improve both the adsorption capacity and rate effectively even though sacrificing part of specific surface areas, indicating that active sites might play a dominant role during the dye adsorption process.
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This work was supported by the Fundamental Research Funds for the Central Universities (Grant No. JKD01221701), the Shanghai Pujiang Program (Grant No. 21PJ1402100), and the Young Scientists Fund of the National Natural Science Foundation of China (Grant No. 52203258).
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All the authors have approved the final version of the manuscript. Tao Xue: writing—original draft, experiment, research, and investigation ideas. Feifei Shao: investigation, data curation. Han Miao: supervision, writing—review & editing. Xinxin Li: conceptualization, supervision, project administration, first draft revision, and final draft.
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The following files are available free of charge. Synthesis and structures of oleophilic Fe3O4 nanoparticle; the scheme of the synthesis of porous magnetic adsorbents; the core-shell structures of hybrid nanoparticles; the compositions and structures of SY, RhB, and MB molecules; the equations of adsorption kinetic and its detail fitting dates; the adsorption equilibrium time of HSVF at 100 mg/L; the equations of adsorption isotherm and its detail fitting dates. (DOCX 13534 kb)
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Xue, T., Shao, F., Miao, H. et al. Porous polymer magnetic adsorbents for dye wastewater treatment. Environ Sci Pollut Res 30, 97147–97159 (2023). https://doi.org/10.1007/s11356-023-29102-7
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DOI: https://doi.org/10.1007/s11356-023-29102-7