The Effect of Phosphate and Sulfate on Arsenate Desorption From Nano-TiO 2

摘要

The study focuses on the effect of phosphate and sulfate on As(V) desorption from nano-TiO2. The results indicate that phosphate exhibits a strong influence on As(V) mobility. The desorption rate of As(V) increases according to the order: pH 9 pH 8 pH 7 pH 6. The desorption rate of As(V) reaches the maximum value of 85% at pH 9, and the minimum value of 19% at pH 6. In addition, the desorption rate of As(V) increases according to the order: pH 7 pH 8 pH 9 pH 6 in the presence of sulfate.