Abstract
The seagrass posdonia oceanic (P.O) was collected from Tajora Beach and utilized to remove Pb ions from aqueous solutions. The P.O samples were characterized by SEM, POM and FTIR analysis. The removal percentage of Pb2+ was found to be 88.1 % at 6 hrs using P.O. The maximum removal capacity of Pb was determined to be 28.82 mg/g. The amounts of the Pb2+ adsorbed have decreased from 3.71 to 0.22 mg/g as pH increased from 4 to 10. The removals of Pb have positive relationship with temperature and the mass of P.O. The activation energy of Pb2+ removal is + 4.1 kJ/mole which suggests the endothermic nature of reaction.