Removal of chromium (VI) from aqueous solution using surfactant impregnated activated carbon: article

Adsorption process using Surfactant Impregnated Activated Carbon (SIAC) was studied to remove chromium (VI) from aqueous solution. Objective of this study was to investigate the effect of anionic surfactant on the adsorption of hexavalent chromium onto activated carbon by using Sodium Lauryl Sulfoacetate (SLSA) as surfactant. Different surfactant concentrations impregnated onto the activated carbon was studied on the removal of hexavalent chromium in aqueous solution. Based on the result of this study, it shows that the removal of Cr(VI) using Surfactant Impregnated Activated Carbon (SIAC) decreases as concentration of surfactant increases due to the electrostatic repulsion of hexavalent chromium that exists as dichromate (Cr2O7²¯) ions with the surface functional group of SIAC.