Adsorption of Pb(II) and Cd(II) metal ions from aqueous solutions by mustard husk

The applicability of Lagergren kinetic model has also been investigated. Thermodynamic constant (kad), free energy change (ΔG), enthalpy change (ΔH) and entropy change (ΔS) were calculated for predicting the nature of adsorption. The results indicate the potential application of this method for effluent treatment in industries and also provide strong evidence to support the adsorption mechanism proposed.