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Polypyrrole-polyaniline/Fe3O4 magnetic nanocomposite for the removal of Pb(II) from aqueous solution

Authors
  • Afshar, Amirhossein1
  • Sadjadi, Seyed Abolfazl Seyed1
  • Mollahosseini, Afsaneh1
  • Eskandarian, Mohammad Reza1, 2, 3, 4
  • 1 Iran University of Science & Technology, Faculty of Chemistry, Tehran, Iran , Tehran (Iran)
  • 2 Semnan University, Department of Applied Chemistry, Faculty of Chemistry, Semnan, Iran , Semnan (Iran)
  • 3 University of Zanjan, Department of Chemistry, Zanjan, Iran , Zanjan (Iran)
  • 4 Zanjan Zinc Khalessazan Industrial Companies (ZZKICO), Zanjan, Iran , Zanjan (Iran)
Type
Published Article
Journal
Korean Journal of Chemical Engineering
Publisher
Springer-Verlag
Publication Date
Nov 12, 2015
Volume
33
Issue
2
Pages
669–677
Identifiers
DOI: 10.1007/s11814-015-0156-1
Source
Springer Nature
Keywords
License
Yellow

Abstract

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.

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