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- W2894315710 abstract "In current study, the capabilities of CMC-g-HAp/Fe3O4 nanocomposite as an adsorbent for sorption of heavy metal ions of copper and nickel from aqueous is reported. Nanocomposite properties were characterized by FTIR, SEM, EDAX, map, TEM, XRD, TGA, VSM, and AFM techniques. According to FTIR test, the main functional groups involved in the sorption of metals were of OH, CH, CO, PO43−, and Fe-O. The specific saturation magnetization (σs) for CMC-g-HAp/Fe3O4 nanobiocomposite was determined as 28.73 emu/g. Besides, our results show that the kinetic behavior of the copper and nickel ion adsorption process using nanobiocomposite CMC-g-HAp/Fe3O4 obeys the pseudo-second-order kinetic model. Additionally, the equilibrium state of the adsorption process was studied using Langmuir, Freundlich, and Dobbin-Radskovich (D-R) isotherm models. The maximum sorption capacity of CMC-g-HAp/Fe3O4 nanocomposites for copper and nickel ions was obtained 88.49 mg/g and 86.95 mg/g, respectively. Moreover, the average free energy (E) for the copper and nickel ion adsorption processes were attained 1.63 kJ/moL and 1.25 kJ/mol, respectively. This E value shows that the adsorption process of both metal ions using the CMC-g-HAp/Fe3O4 nanobiocomposite is physical. Finally, enthalpy (ΔHᵒ), entropy (ΔSᵒ), and Gibbs free energy (ΔGᵒ) were calculated for the thermodynamic behavior of the process. The outcomes indicated that the copper and nickel ions adsorption process using CMC-g-HAp/Fe3O4 nanobiocomposite is exothermic and spontaneous." @default.
- W2894315710 created "2018-10-05" @default.
- W2894315710 creator A5046990319 @default.
- W2894315710 creator A5069460938 @default.
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- W2894315710 date "2018-10-01" @default.
- W2894315710 modified "2023-09-29" @default.
- W2894315710 title "Studying the physicochemical characteristics and metals adsorptive behavior of CMC-g-HAp/Fe3O4 nanobiocomposite" @default.
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- W2894315710 doi "https://doi.org/10.1016/j.jece.2018.09.030" @default.
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