Investigation of α‐iron oxide‐coated polymeric nanocomposites capacity for efficient heavy metal removal from aqueous solution |
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| Authors: | Elahe Fallah TAlooki Mohsen Ghorbani Ali Asghar Ghoreyshi |
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| Affiliation: | 1. M. Sc. student of Chemical Engineering Department, Babol University of Technology, Babol, Iran;2. Faculty of Chemical Engineering, Babol University of Technology, Babol, Iran |
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| Abstract: | In the present study, PS@α‐Fe2O3 nanocomposites were prepared by chemical microemulsion polymerization approach and the ability of magnetic beads to remove Cu(II) ions from aqueous solutions in a batch media was investigated. Various physico‐chemical parameters such as pH, initial metal ion concentration, temperature, and equilibrium contact time were also studied. Adsorption mechanism of Cu2+ ions onto magnetic polymeric adsorbents has been investigated using Langmuir, Freundlich, Sips and Redlich–Petersen isotherms. The results demonstrated that the PS@α‐Fe2O3 nanocomposite is an effective adsorbent for Cu2+ ions removal. The Sips adsorption isotherm model (R2 > 0.99) was more in consistence with the adsorption isotherm data of Cu(II) ions compared to other models and the maximum adsorbed amount of copper was 34.25 mg/g. The adsorption kinetics well fitted to a pseudo second‐order kinetic model. The thermodynamic parameters (ΔH°, ΔS°, and ΔG°) were calculated from the temperature dependent sorption isotherms, and the results suggested that copper adsorption was a spontaneous and exothermic process. POLYM. ENG. SCI., 55:2735–2742, 2015. © 2015 Society of Plastics Engineers |
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