Chemical model for dioxin destruction in aqueous medium: Electrocatalytic oxidation of dioxin-like substance simulating natural pollutant Original Research Article

Chemical model for destruction of dioxin in aqueous phase was suggested. Eosin being similar to dioxins in structure was chosen as a model substance. Eosin seemed to undergo destruction in electrocatalytic systems. For the first time, the adsorption of dioxin-like pollutant, eosin, was detected on platinum electrode at higher potentials than those of oxygen evolution. The kinetics of electrocatalytic oxidation was studied. A total oxidation of substrate to mineral products (carbonates, bromates) occurred over platinized-platinum catalyst. The scheme for electrocatalytic destruction of eosin was discussed. The similar behavior of dioxin in electrocatalytic systems was considered on the basis of the structural similarity and kinetic relationship in eosin and dioxin oxidation.