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Article

Fabrication of rGO/Fe3O4 Magnetic Composite for the Adsorption of Anthraquinone-2-Sulfonate in Water Phase

1
State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China
2
Harbin Institute of Technology National Engineering Research Center of Water Resources Co., Ltd., Harbin 150090, China
3
Guangdong Yuehai Water Investment Co., Ltd., Shenzhen 518021, China
*
Authors to whom correspondence should be addressed.
Academic Editor: Chicgoua Noubactep
Water 2021, 13(17), 2315; https://doi.org/10.3390/w13172315
Received: 19 July 2021 / Revised: 20 August 2021 / Accepted: 20 August 2021 / Published: 24 August 2021
(This article belongs to the Section Wastewater Treatment and Reuse)
In the last few decades, anthraquinone and its derivatives (AQs) have been intensively applied to electrochemical, textile and dye, and photovoltaic industries. This has increased the levels of AQs in the natural environment and threatens human health. To remove AQs from the aqueous phase and recover these multi-functional molecules, a binary magnetic adsorbent, reduced graphene/Fe3O4 (rGO/Fe3O4), was synthesized via a hydrothermal method. Transmission electron microscopy (TEM), X-ray diffraction (XRD), Fourier transform infrared (FTIR), Raman spectra, and thermogravimetric analysis (TGA) were then used to characterize the samples. The adsorption capacities of rGO/Fe3O4 to AQs were investigated by selecting anthraquinone-2-sulfonate (AQ2S) as a model molecule. The adsorption process followed the Langmuir adsorption isotherm and the second-order kinetics. The regeneration of adsorbents and the recycling of AQ2S and solvent were simultaneously achieved by Soxhlet extraction and rotary evaporation. These results confirm the high adsorption efficiency of rGO/Fe3O4 for removing AQs from water and provide a promising approach to recover the valuable molecules from the aqueous phase. View Full-Text
Keywords: adsorption; magnetic composite; anthraquinone-2-sulfonate; regeneration adsorption; magnetic composite; anthraquinone-2-sulfonate; regeneration
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MDPI and ACS Style

Zhao, S.; Li, M.; Ding, J.; Yang, S.; Zang, Y.; Zhao, Y.; Gao, X.; Ren, N. Fabrication of rGO/Fe3O4 Magnetic Composite for the Adsorption of Anthraquinone-2-Sulfonate in Water Phase. Water 2021, 13, 2315. https://doi.org/10.3390/w13172315

AMA Style

Zhao S, Li M, Ding J, Yang S, Zang Y, Zhao Y, Gao X, Ren N. Fabrication of rGO/Fe3O4 Magnetic Composite for the Adsorption of Anthraquinone-2-Sulfonate in Water Phase. Water. 2021; 13(17):2315. https://doi.org/10.3390/w13172315

Chicago/Turabian Style

Zhao, Shuangyang, Meixi Li, Jie Ding, Shanshan Yang, Yani Zang, Yan Zhao, Xinlei Gao, and Nanqi Ren. 2021. "Fabrication of rGO/Fe3O4 Magnetic Composite for the Adsorption of Anthraquinone-2-Sulfonate in Water Phase" Water 13, no. 17: 2315. https://doi.org/10.3390/w13172315

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