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Separation Science and Technology Volume 51, 2016 - Issue 2
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Adsorption

Enhanced removal of lead and cadmium from water by Fe3O4-cross linked-O-phenylenediamine nano-composite

Mohamed E. MahmoudFaculty of Sciences, Department of Chemistry, Alexandria University, Ibrahimia, Alexandria, EgyptCorrespondence[email protected]
,
Mohamed S. AbdelwahabFaculty of Sciences, Department of Chemistry, Alexandria University, Ibrahimia, Alexandria, Egypt
&
Azza E. H. AbdouFaculty of Sciences, Department of Chemistry, Alexandria University, Ibrahimia, Alexandria, Egypt
Pages 237-247 | Received 19 May 2015, Accepted 09 Sep 2015, Published online: 22 Dec 2015
 
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ABSTRACT

A method is presented for surface encapsulation of nano-Fe3O4 by o-phenylenediamine via cross-linking using formaldehyde and glutaraldhyde for the formation of two newly designed magnetic nano-sorbents. These have been characterized by FT-IR, TGA, and SEM and maintained the magnetic and thermal stability characters. The metal capacity values of Pb(II) and Cd(II) have been optimized in presence of different physico-chemical parameters and confirmed the superior selectivity for Pb(II). Maximum capacity values of Pb(II) (7000-10000 ± 250-675 µmol g−1) and Cd(II) (1500-2250 ± 30-75 µmol g−1) at optimum conditions and excellent extraction values (94.10-100.0 ± 1.2-3.5%) from industrial wastewater have been identified.

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