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- W2051287361 abstract "Abstract Mats of randomly oriented nanosized filaments, prepared by electrospinning wool keratin/polyamide 6 blends in formic acid, were evaluated as adsorbents of Cu 2+ ions. The adsorption capacity was evaluated as a function of the nanofibre composition, specific surface area, initial metal ion concentration, contact time and pH of the solution. The adsorption tests revealed that keratin-based nanofibres highly adsorb Cu 2+ ions and the adsorption capacity increases with increasing the specific surface area of the nanofibre mats. The maximum adsorption capacities for nanofibre mats containing 50%, 70% and 90% (wt.%) of keratin were found to be 61.7 (mg/g), 90 (mg/g) and 103.5 (mg/g), respectively. The Cu 2+ adsorption onto the keratin rich nanofibres is highly pH-dependent and the optimum pH was found above the isoelectric point of keratin. The experimental data fit the pseudo second-order kinetic model. Infrared analysis demonstrated the formation of complexes between Cu 2+ ions and keratin that involve terminal free carboxyl groups of the protein." @default.
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- W2051287361 date "2011-09-01" @default.
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- W2051287361 title "Adsorption of copper(II) ions by keratin/PA6 blend nanofibres" @default.
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- W2051287361 doi "https://doi.org/10.1016/j.eurpolymj.2011.06.009" @default.
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