Animesh Agarwal and Puneet Kumar Gupta
In the present work, the adsorption efficiency of eggshell powder for the removal of Cu and Fe studied. Calcium carbonate, magnesium carbonate & calcium phosphate are the main constituents of eggshell powder, which have good adsorption capacity. The research is a batch scale experiment using different amount of adsorbent in solution with five different concentrations (5, 10, 20, 40, 100 mg/L) of both metals and in mixed combination. About 85% to 95% Fe removal achieved by using 0.5 to 1.5 g adsorbent for solution having concentration of 5 and 10 mg/L of Fe. Two main things comes out by the above study, first, the adsorption efficiency depends on the amount of adsorbent as the adsorption efficiency of Cu was increased from 80% to 95% in the same solution (5mg/L). Second, it a also found that adsorption efficiency was decreased about 7 % and 3% of Fe and Cu to mixed metal solution, which clearly indicates that the presence of more metals in the solution will decrease the adsorption efficiency
