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- W2377771890 abstract "The paper reports on the feasibility of removing Cr(Ⅵ) from aqueous solution using a sulfate-modified titanium-bearing blast furnace slag (STBBFS) as an adsorbent. The components and microstructures of the calcined STBBFS adsorbent were examined by X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction and scanning electronic microscopy. The adsorption efficiency for Cr(Ⅵ) by the STBBFS adsorbents was investigated at different pH values, initial mass concentrations of STBBFS and adsorption temperatures of aqueous solution. The adsorption data followed the Langmuir model rather than the Freundlich model, and the adsorption equilibrium was described by the Langmuir isotherm model with a maximum adsorption capacity of 8.25 mg/g of Cr(Ⅵ) ions onto the STBBFS adsorbents at pH=1.5. A pseudo-second-order kinetic model showed good fitting to the experimental results at different initial concentrations and adsorption temperatures. The thermodynamic parameters, such as enthalpy change (ΔH°), free energy change (ΔG°) and entropy change (ΔS°) were analyzed. The thermodynamics of Cr(Ⅵ) ions onto the STBBFS adsorbents indicates the spontaneous and endothermic nature of the adsorption process. XPS and FTIR analysis show that in the process the of Cr(Ⅵ) is reduced to Cr(Ⅲ) after the adsorption of Cr(Ⅵ)." @default.
- W2377771890 created "2016-06-24" @default.
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- W2377771890 date "2008-01-01" @default.
- W2377771890 modified "2023-09-23" @default.
- W2377771890 title "REMOVAL OF CHROMIUM(VI) FROM AQUEOUS SOLUTION BY SULFATE-MODIFIED TITANIUM-BEARING BLAST FURNACE SLAG" @default.
- W2377771890 hasPublicationYear "2008" @default.
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