Batch experiments were conducted to investigate the kinetics and equilibrium data in 100 mL of glass
flasks as it is essential for designing and operation of adsorption process for wastewater treatment. A known amount of adsorbent (1 g) was weighed and placed in flask containing 50 mL solution at desired concentrations which were 250 and 50 mg/L for lead and cadmium,respectively [19]. Separate flasks were used for each time interval and one flask was taken and analyzed for desired time. Three sets of isotherm plots were obtained at three different temperatures (25, 35, 45 °C). Each isotherm consisted of eight adsorbate concentrations varied from 25 to 1000 mg/L and 25 to 2500 mg/L for cadmium and lead ions, respectively