New Natural Adsorbent for the Removal of Toxic Metal Ions from Aqueous Solutions

A New natural adsorbent will be used for the first time in the Kingdom based on garden grass collected from the gardens of the King Fahd University of Petroleum and Minerals, the garden grass will be treated with alcohol, dried and sieved into different mesh size. The new adsorbent will be evaluated for its efficacy in the removal of toxic metal ions such as Lead, Arsenic and Nickel ions from aqueous solutions; as they possess hazardous effects on the human body and the environment. Different factors will be studied which include pH, Time, initial metal ion concentration, and temperature. The experimental data obtained will be subjected to Langmuir, Freundlich and Temkin isotherm models. The kinetic experimental data, will be investigated by pseudo-first and second kinetic models; also the mechanism of adsorption will be investigated by Intraparticle diffusion model. Once all parameters are optimized the new adsorbent will be tested for its efficiency in the removal of toxic metal ions from real wastewater samples. The successful execution of this project will provide a new insight on the utilization of garden grass waste for an added value product.