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

Figure 14

(a) The influence of temperature on the removal efficiency of Cd (II) ions on FA based adsorbents (RFA, AFA, and PEFA) as a function of pH value of 9, 2 mg/L metal ion concentration, 150 rpm mixing rate, contact time of 15 min, 4 g/L adsorbent dosage, and 50 mL volume of aqueous solution. (b) Van Hoff plot for Cd ion sorption at pH value of 9, 2 mg/L metal ion concentration, 150 rpm mixing rate, PEFA, contact time of 15 min, 4 g/L adsorbent dosage, and 50 mL volume of aqueous solution.

(a)

(b)