Abstract
The present study investigated the adsorption of lead ions ( ) from aqueous solutions using natural Clinoptilolite zeolite. The variables that were studied in this process and during the examinations include contact time, pH, adsorbent dose, and initial lead ion concentration, and primary concentration of the solution of lead. To determine the chemical composition of zeolite, X-ray fluorescence analysis was applied, Also Adsorption isotherms and kinetics in constant temperature and stirrer speed of 250 rpm has been examined also. The results showed that the optimal dose was 5 mg/g which give high removal efficiency of 83.3%. However, with the increase of metal concentration, While the removal is a significant issue in the field of health community is a significant issue in the field of health community val efficiency decreased with increasing metal concentration, the adsorption capacity was enhanced. Also, the Langmuir model showed better fit for the adsorption of lead (R²=0.8658) in comparison to other isotherms . The findings of this study suggest that natural zeolite Clinoptilolite can be considered as an efficient and inexpensive adsorbent for the removal of a heavy metal like lead from aqueous solutions.
