E. Equilibrium Studies of Cu(II) Adsorption
A series of solutions containing different initial
concentrations of Cu(II) ions (in the range of 50 – 350 mg/L)
was prepared and employed for the batch adsorption studies at
30°C to check the applicability of the Langmuir and Freundlich
adsorption isotherms under optimum conditions obtained
previously. The remaining concentration of Cu(II) after
adsorption was measured using AAS and the amount of
adsorption at equilibrium, qe (mg/g) was calculated by: