Simultaneous removal of arsenate and arsenite by a nanostructured zirconium-manganese binary hydrous oxide: Behavior and mechanism

► The Zr-Mn binary hydrous oxide is effective for both As(V) and As(III) removal. ► As(III) could be effectively oxidized to As(V) by the hydrous oxide. ► As(V) removal is mainly achieved through sorption process. ► As(III) uptake is a sorption coupled with oxidation process.