COMPARATIVE STUDY OF REMOVAL POLLUTANTS ( HEAVY METALS) BY AGRICULTURAL WASTES AND OTHER CHEMICAL FROM THE AQUEOUS SOLUTIONS

This study included the application of some experiments in chemical treatment heavy metals elements by preparing biological surfaces that are adsorbed from natural and other substances, as activated carbon prepared charred pistachio shell with concentrated H2SO4 Nano-Calcium Oxide CaCL2.2H2O NaOH . The materials were diagnosed spectral techniques where FTIR infrared spectrum proved formation carbonyl, hydrogen oxygenated surface charcoal hydroxyl calcium oxide groups nano-calcium oxide, FE-SEM morphology was proven to form on coal blocks is a network irregular holes microscopic regular nano- oxide. As for X-ray diffraction technology, crystal structures surface, its shapes sizes, shown, consists Many types hexagonally cuboid rhomboid right angle, while technical size crystalline nanoscale which ranges between (54.68-67.86nm) cube-shaped. PIAC n-Calcium used sorbents removal of, Cd + 2, Pb 2 ions aqueous solutions, effect pH, contact time, multiple weights primary concentration horizontal method , minimal concentrations large volumes solutions process preconcentration