Mixed adsorbents for cu(Ii) removal from aqueous solutions

Abstract

Low cost mixed adsorbents have been used t o study, the removal of Cu(II) at different concentrations, and pH of the solution. The uptake of Cu (II) i s maximum by wollastonite-china clay followed by flyash-wollastonite and flyash-china clay at the same concentrateion, temperature and pH of the solution. Equilibrium data of various systems at 30°C and pH 6.5 fit well in the Freundlich equation. Removal of Cu(II) increases with the pH of the solution and i s maximum at pH 8.0. Significant desorption of Cu(II) from the surfaces of mixed adsorbents was noted at pH 2. 0. © 1986 Taylor & Francis Group, LLC.