ABSTRACT
Several methods of As removal are already available including precipitation, electrochemical reduction, adsorption, ion exchange, solvent extraction, nanofiltration and reverse osmosis (Mayo et al., 2007). Also, the presence of competing ions such as phosphate, silicate, nitrate, chloride, carbonate, and sulfate affects the removal efficiency, and thus, the selection of a suitable treatment strategy is influenced by the groundwater composition. Highly efficient, cheap and sustainable technology which could be used by rural populations and colonies without any common treatment facilities is therefore of great urgency and high priority. Besides the importance of the removal step to assure the quality of drinking water, the way in which secondary wastes are finally managed is equally important in order to avoid future As recycling in aquifers.
