Studies On Equlibrium Isotherms, Kinetic And Thermodynamic Parameters Of Pb2+ Ion By Using New Composite Adsorbents

Abstract

The purpose of this study was to investigate the possibility of the utilization of low-cost adsorbents. Batch experiments were conducted to evaluate the removal of Pb²⁺ ion from aqueous solutions by using various conditions of initial metal concentration, and contact time. The adsorption data was described by the Langmuir, Freundlich and BET adsorption Isotherm model. The best fit among the isotherm models was assessed by the linear coefficient of determination (R). The test results indicated that used materials be used as a cheap adsorbents for the removal of lead ions from aqueous solution. The kinetic experimental data properly correlated with the Pseudo first-order kinetic model, which indicates that, the Physical adsorption. From the thermodynamic data the overall adsorption is spontaneous, endothermic and increase in randomness.