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- W2809518130 abstract "A facile route of poly (vinyl alcohol)/[email protected] polyacrylamide (PVA/[email protected]) for heavy metal adsorption was prepared by crosslinking with PAM onto PVA/SA, which complemented both benefits of natural and synthetic polymers, resulting from the design of core–shell/bead-like structure and polymer blending. Fourier transform infrared (FT-IR), scanning electron microscopy and energy-dispersive X-ray spectrometry (SEM-EDS) and X-ray photoelectron spectroscopy (XPS) etc. were applied to characterize as-synthesized beads. The results showed the optimal pH value was 5.0. The adsorption process of Cu(Ⅱ) fitted well with the Freundlich isotherm model and the pseudo-second-order model in batch system. The experimental maximum adsorption capacity was 79.5 ± 1.6 mg/g under the optimal condition, which is approximately 2.3 and 2 times higher than that of plain SA beads and PVA/SA beads, respectively. Thermodynamic studies revealed the adsorption process was spontaneous and endothermic in nature. Thomas model was fitted better than Bohart-Adams model with breakthrough curves under different initial Cu(Ⅱ) concentration in a column system. More importantly, the PVA/[email protected] showed excellent mechanical stability and resistance for interference of co-existing ions. Besides, its removal ability only decreased slightly even after eleven cycles in reusability tests. Overall, PVA/[email protected] exhibits attractive characteristics of simple production process, low cost, good adsorption capacity, excellent adaptability and chemical and mechanical stability." @default.
- W2809518130 created "2018-06-29" @default.
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- W2809518130 date "2018-11-01" @default.
- W2809518130 modified "2023-10-13" @default.
- W2809518130 title "A facile synthesis of core-shell/bead-like poly (vinyl alcohol)/alginate@PAM with good adsorption capacity, high adaptability and stability towards Cu(Ⅱ) removal" @default.
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- W2809518130 doi "https://doi.org/10.1016/j.cej.2018.06.129" @default.
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