Removal of Copper ions from aqueous solutions using polymer derivations of poly (styrene-alt-maleic anhydride)

Abstract

In this study chelating resins have been considered to be suitable materials for the recovery of Copper (II) ions in water treatments. Furthermore, these modified resins were reacted with 1,2-diaminoethane in the presence of ultrasonic irradiation for the preparation of a tridimensional chelating resin on the Nano scale for the recovery of Copper (II) ions from aqueous solutions. This method which is used for removing and determining Copper (II) ions using copolymers derived resins of poly (styrene-alternative-maleic anhydride) (SMA) and atomic absorption spectroscopy. The method is simple, sensitive, inexpensive and fast. The various parameters such as pH, contact time, concentrations of metal ions, mass of resin, and agitation speed were investigated on adsorption effect. The adsorption behavior of Copper (II) ions were investigated by the synthesis of chelating resins at various pHs. The prepared resins showed a good tendency for removing the selected metal ions from aqueous solution, even at an acidic pH. Also, the prepared resins were examined for the removal of Copper (II) ions from real samples such as industrial wastewater and were shown to be very efficient at adsorption in the cases of Copper (II) ions. The pseudo-first-order, pseudo-second-order, and intra-particle diffusion kinetics equations were used for modeling of adsorption data and it was shown that pseudo-second-order kinetic equation could best describe the adsorption kinetics. The intra-particle diffusion study revealed that external diffusion might be involved in this case. The resins were characterized by Fourier transform infrared spectroscopy, scanning electron microscopy, and X-ray diffraction analysis.