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Vol. 27 No. 9 (2015): Vol 27 Issue 9

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Adsorption of Ag(I), Cr(VI) and Pb(II) from Aqueous Media onto Different Adsorbent Types

https://doi.org/10.14233/ajchem.2015.18610
M. Adnan Younis
Department of Chemistry, University of Agriculture, Faisalabad-38040, Pakistan
Raziya Nadeem
Department of Chemistry, University of Agriculture, Faisalabad-38040, Pakistan
Asma Rehman
National Institute for Biotechnology and Genetic Engineering, Faisalabad, Pakistan
Munawar Iqbal
National Centre of Excellence in Physical Chemistry, University of Peshawar, Peshawar-25120, Pakistan; Department of Chemistry, COMSATS Institute of Information Technology, Abbottabad 22060, Pakistan
M. Rizwan Younis
National Institute for Biotechnology and Genetic Engineering, Faisalabad, Pakistan
Qaisar Manzoor
Department of Chemistry, University of Agriculture, Faisalabad-38040, Pakistan

Corresponding Author(s) : Raziya Nadeem

raziyaanalyst@yahoo.com

Asian Journal of Chemistry, Vol. 27 No. 9 (2015): Vol 27 Issue 9

Abstract

Adsorption of Ag(I), Cr(VI) and Pb(II) onto iron magnetic nanoparticles, chitosan–magnetite nanocomposite, calcium algenate beads and calcium alginate fungal beads (CAFB) were studied as a function of initial concentration, pH and contact time. The equilibrium adsorption data was analyzed using pseudo-first order and pseudo-second order kinetic models and Langmuir and Freundlich isotherms. The chitosan–magnetite nanocomposite and calcium alginate fungal beads showed significantly higher metal ion adsorption efficiency as compared to iron magnetic nanoparticles and calcium algenate beads. The sorption capacities of adsorbents varied with initial solution pH, metal ions concentration and contact time. Freundlich model fitted well to the data and the pseudo-second order described best the sorption kinetics.

Keywords

Heavy metals adsorption Nanoparticles Chitosan Kinetics Isotherms
Adnan Younis, M., Nadeem, R., Rehman, A., Iqbal, M., Rizwan Younis, M., & Manzoor, Q. (2015). Adsorption of Ag(I), Cr(VI) and Pb(II) from Aqueous Media onto Different Adsorbent Types. Asian Journal of Chemistry, 27(9), 3308–3314. https://doi.org/10.14233/ajchem.2015.18610
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