Abstract
Effective adsorbent was prepared from Egyptian Muscovite by activation with H2O2, HCl and/or H2O2 / HCl. The prepared adsorbents were applied for the removal of cadmium and lead from polluted water. Raw Muscovite powder was activated by different treatments using 30% H2O2, HCl, and/or HCl /H2O2. Optimum adsorption conditions of pH, adsorbent dose, initial metal concentration, stirring time and solution temperature were optimized for the maximum adsorption of Cd and Pb. The results reveal that the Muscovite adsorbent prepared with a mixture of HCl /H2O2 shows the higher adsorption of Cd and Pb than that with HCl or H2O2. The maximum adsorption of Cd and Pb by the developed adsorbent was 97.8% and 98.1%, respectively at 60 min ,25°C, initial metal concentration 50 ppm, adsorbent dose 2g/50 mL solution and pH 6 for lead and pH7 for cadmium. Adsorption isotherms and kinetic models were investigated and ended to that the adsorption of Pb and Cd fitted well Langmuir adsorption isotherm.
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