Evaluation of the Activated Carbon Prepared of Algae Marine Gracilaria for the Biosorption of Ni (II) from Aqueous Solutions

Biosorption of heavy metals can be an effective process for the removal and recovery of heavy metal ions from aqueous solutions. In this study, the batch removal of nickel (II) ions from aqueous solution under different experimental conditions using activated carbon prepared of red alga Gracilaria was investigated in this study. The nickel (II) uptake was dependent on initial pH and initial nickel concentration, with pH 5 being the optimum value. The equilibrium data were fitted using Langmuir and Freundlich isotherm model, with the maximum nickel (II) uptake of 99.03% determined at a pH of 5. At various initial nickel (II) concentrations (30-70 mg/L ), If the adsorption is design correctly, it will be attractive. sorption equilibrium was attained between 15 and 120 min. The nickel (II) uptake by activated carbon was best described by Pseudo-second order rate model. This study, shows the usage of activated carbon as a valuable material for the removal of Ni from aqueous solution wastewater and a better substitute to be used in activated marine red algae.