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- W2992126906 endingPage "125522" @default.
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- W2992126906 abstract "This study focuses on the synthesis of granular red mud reinforced by zero-valent iron ([email protected]) and its application for the removal acid orange 7 (AO7) from aqueous solution. Then ZVI is employed as a catalyst for the activation of persulfate (PS) to produce sulfate radicals (SO4•−) that are produced at 900 °C in an anoxic atmosphere using the direct reduction of iron oxide in the red mud with maize straw as the reductant. Furthermore, scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS) are used to illustrate the morphology and porous structure of the [email protected] The X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS) revealed that [email protected] was loaded with zero-valent iron. This characterization confirmed that the [email protected] was a porous structure material that contained zero-valent iron. The influence of conditions for AO7 elimination, including initial pH, [email protected] dosage, initial AO7 concentrations, and temperature, is also investigated. The removal efficiency of AO7 was 90.78% using [email protected]/PS, while only 18.15% was removed when [email protected] was used alone. The degradation kinetics were well fitted to a pseudo-first-order kinetic model, and the rate of removal increased with temperature, demonstrating an endothermic elimination process. The Arrhenius activation energy of the process was 20.77 kJ/mol, which indicated that the reduction of AO7 was a diffusion-mediated reaction. [email protected] is a low-cost material that demonstrated outstanding performance with great potential for wastewater treatment." @default.
- W2992126906 created "2019-12-13" @default.
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- W2992126906 date "2020-04-01" @default.
- W2992126906 modified "2023-09-25" @default.
- W2992126906 title "Efficient removal of acid orange 7 using a porous adsorbent-supported zero-valent iron as a synergistic catalyst in advanced oxidation process" @default.
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- W2992126906 doi "https://doi.org/10.1016/j.chemosphere.2019.125522" @default.
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