Change in Surface Charge Properties of Nano-ball Allophane as Influenced by Sulfate Adsorption

Abstract

Results from previous experiment showed that sulfate were strongly adsorbed on allophane. The adsorption was proposed to be anion and ligand exchange reactions. Adsorption of anions on clay minerals through ligand exchange reaction is likely to cause a change in the surface charge and since the amounts of sulfate adsorbed were greater than the AEC values these leads to the assumption that the new formed compound have different chemical properties than the original allophane.