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- W4292452192 abstract "Abstract A magnetic coagulant (γ‐Fe 2 O 3 @SHFA) is prepared by fly ash and magnetic seed (γ‐Fe 2 O 3 ) doping to remove Pb 2+ from wastewater. The optimum modification conditions and doping procedures are determined by three‐factor and single‐factor experiments, respectively. The coagulation mechanism and properties of γ‐Fe 2 O 3 @SHFA are investigated. The results show that when the coagulant dosage is 1.0 g L −1 , pH = 5.0 ± 0.2, and the coagulation reaction time is 20 min, the maximum Pb 2+ removal capacity can reach 88.72 mg g −1 . The point of zero charge, zeta potential, Brunner Emmet Teller, scanning electron microscope, X‐ray diffraction, and X‐ray photoelectron spectroscopy indicate that charge neutralization and bridging action play an important role in the removal process of Pb 2+ . Coagulation kinetic, isothermal, and thermodynamic analyses show that the removal behavior of the magnetic coagulant on Pb 2+ is dominated by physical effects, and the coagulation process is spontaneous, endothermic, and irreversible. After five reuses, the Pb 2+ removal capacity of γ‐Fe 2 O 3 @SHFA decreases from 73.55 to 51.11 mg g −1 , which remains at a high level." @default.
- W4292452192 created "2022-08-20" @default.
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- W4292452192 date "2022-08-22" @default.
- W4292452192 modified "2023-09-25" @default.
- W4292452192 title "Removal of Pb <sup>2+</sup> from Wastewater By γ‐Fe <sub>2</sub> O <sub>3</sub> @SHFA Based on Alkali‐Modified Fly Ash: Performance and Mechanism" @default.
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- W4292452192 doi "https://doi.org/10.1002/ppsc.202200118" @default.
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