In this research, the ability of natural zeolite clinoptilolite to remove lead from aqueous solutions has been investigated in batch adsorption experiments. Adsorption tests of Pb(II) were carried out using a solid to liquid ratio of 20 g/L and agitation speed of 700 rpm. The effects of particle size of the minerals (75-250 mm), solution concentration (100-1,200 ppm), initial pH (2-7), contact time (30-180 min) and temperature (30-75 degrees C) were examined.