AWWA ACE54282

In this paper, experimental work at lab scale for an arsenic removal process is presented. The process is based on the corrosion of iron wool producing ferric hydroxide. The ferric hydroxide particles are used for adsorption of arsenic and are removed by sand filtration. The kinetics of corrosion and equilibrium loads of arsenic on ferric hydroxide are studied. The process is ableto deal with very high inlet concentrations during a long run time of the corrosion filter elements. The simple technology and the low-cost materials make it suitable for application in developing countries with elevated concentrations of arsenic in drinking water. Includes 7 references, figures.