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Issue
Korean Journal of Chemical Engineering,
Vol.33, No.2, 669-677, 2016
Polypyrrole-polyaniline/Fe3O4 magnetic nanocomposite for the removal of Pb(II) from aqueous solution
Afshar A, Sadjadi SAS, Mollahosseini A, Eskandarian MR
Lead ion which is engaged in aqueous solution has been successfully removed. A novel technique was utilized for the separation and absorption of Pb(II) ions from aqueous solution. Magnetic Fe3O4 coated with newly investigated polypyrrole-polyaniline nanocomposite was used for the removal of extremely noxious Pb(II). Characteristic of the prepared magnetic nanocomposite was done using X-ray diffraction pattern, Field emission scanning electron microscopy (FE-SEM), Fourier transform-infra red spectroscopy (FT-IR) and energy dispersive x-ray spectroscopy (EDX). Up to 100% adsorption was found with 20mg/L Pb(II) aqueous solution in the range of pH=8-10. Adsorption results illustrated that Pb(II) removal efficiency by the nanocomposite increased with an enhance in pH. Adsorption kinetics was best expressed by the pseudo-second-order rate form. Isotherm data fitted well to the Freundlich isotherm model. Upon using HCl and HNO3, 75% PPy-PAn/Fe3O4 nanocomposite, desorption experiment showed that regenerated adsorbent can be reused successfully for two successive adsorption-desorption cycles without appreciable loss of its original capacity.
Keywords: Polypyrrole-polyaniline; Nanocomposite; Lead; Heavy Metals; Fe3O4; Kinetic
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[Cited By]
  1. Jafari AJ, Kakavandi B, Kalantary RR, Gharibi H, Asadi A, Azari A, Babaei AA, Takdastan A, Korean Journal of Chemical Engineering, 33(10), 2878, 2016
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