Fenton Redox Chemistry: Arsenite Oxidation by Metallic Surfaces

Pre-oxidation of As(III) is necessary in arsenic removal processes in order to increase its efficiency. Therefore, the Fenton Redox Chemistry is defined by catalytic activation of H2O2 and currently common used for its redox oxidative properties. In this study the effect of H2O2 production catalysed by O2 in metallic surfaces (MS), such as metallic Cu/Zn alloys and Composite Iron Matrix (CIM), for As(III) oxidation is under investigation. Preliminary results show that As(III) is partly oxidized only by the presence of O2 without addition of MS. However, with delayed addition of MS, As(III) oxidation occurred but only due to ROS catalyzed by the metallic surfaces.Water ManagementCivil Engineering and Geoscience