Effects of anions on arsenic adsorption with iron hydroxide-A review
In this review paper interaction of arsenic with iron hydroxide and effects of anions, such as silicate, phosphate and bicarbonate on arsenic adsorption by iron hydroxides, are discussed. Arsenic is strongly adsorbed on the surface sites of iron hydroxides through the formation of inner-sphere complexes. Interaction of arsenic along with silicate or phosphate in the suspension of iron hydroxides affects arsenic adsorption to iron hydroxides and decreases due to competitive adsorption of the anions.