Cadmium Removal from Contaminated Water Using Polyelectrolyte-Coated Industrial Waste Fly Ash

Figure 9

The influence of pH on the removal efficiency of Cd (II) ions on FA based adsorbents (RFA, AFA, and PEFA) as a function of 2 mg/L metal ion concentration, 4 g/L adsorbent dosage, 50 mL volume of aqueous solution, mixing rate of 150 rpm, 15 min contact time, and 298 K temperature.