화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korean Journal of Chemical Engineering, Vol.33, No.2, 669-677, February, 2016
DOI10.1007/s11814-015-0156-1  Export Citation
Polypyrrole-polyaniline/Fe3O4 magnetic nanocomposite for the removal of Pb(II) from aqueous solution
Amirhossein Afshar1, Seyed Abolfazl Seyed Sadjadi1, †, Afsaneh Mollahosseini1, and Mohammad Reza Eskandarian1, 2
  • 1Faculty of Chemistry, Iran University of Science & Technology, Tehran, Iran
  • 2Department of Applied Chemistry, Faculty of Chemistry, Semnan University, Semnan, Iran
E-mail:
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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