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Revista de Chimie (Rev. Chim.), Year 2012, Volume 63, Issue 1,





Mihaela Ciopec, Lavinia Lupa, Adina Negrea, Corneliu Mircea Davidescu, Adriana Popa, Petru Negrea, Marilena Motoc, Dana David, Dana Kaycsa
Kinetic and Thermodynamic Studies Regarding Cu(II) Ions Removal from Aqueous Solution by Poly(Styrene-Divinylbenzene)-Supported Aminophosphonic Acids

Abstract:

In industrial processes, e. g., the leather industry, mineral extraction and electroplating, there is a considerable emission of residual water contaminated with heavy metals such as cadmium, lead, copper, nickel, zinc, and chromium. The use of chelating polymers for the preconcentration and separation of heavy metals is reasonably well understood and progress today is mainly in improving the specificity of the resin and the techniques of application. In this paper the aminophosphonic resins were used in the removal of Cu(II) ions from aqueous solutions. The kinetic models applied to the experimental data showed that the adsorption of Cu(II) ions onto studied materials is described by the pseudo-second-order kinetic model. Temperature dependence of sorption reveals the increase in sorption performance of the sorbent with temperature increasing. The equilibrium adsorption data were described by the Langmuir model. Keywords: aminophosphonic acid, cooper, removal, isotherm, kinetic

Issue: 2012, Volume 63, Issue 1
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