Selective removal of copper with polystyrene–1,3-diaminourea chelating resin: synthesis and adsorption studies

New Journal of Chemistry Pub Date: 2016-02-09 DOI: 10.1039/C5NJ02703A

Abstract

Copper, as a common heavy metal, is harmful to the environment and to people's health. In this study, green chloromethylated polystyrene bead–1,3-diaminourea (PS–DU) which was intended to adsorb copper ions was synthesized from chloromethylated polystyrene (PS-Cl) and 1,3-diaminourea (DU). The structure was characterized by FT-IR and elemental analysis. The adsorption properties of the resin for Cu(II) were investigated by batch and column experiments. Batch adsorption results suggested that PS–DU had a high adsorption capability for Cu(II) and its maximum saturated adsorption capacity was 168.7 mg g?1 at 308 K, estimated from the Langmuir model. The resin and its metal complexes were studied by TGA, SEM and XPS. Furthermore, the resin can be eluted easily using 2 mol L?1 HCl. PS–DU not only has a potential application for the selective removal of copper from waste solutions, but also has an application in the analysis and detection areas.

Graphical abstract: Selective removal of copper with polystyrene–1,3-diaminourea chelating resin: synthesis and adsorption studies
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