Study On Application Of FeO₄～(2-), MnO₄～(2-), XO₃～- In Battery And Wastewater Treatment

High-valence oxides such as ferrate(Ⅵ) salts, manganate(Ⅵ) salts and halogen(Ⅴ) salts have high oxidation potential. The studies explored their applications in the fields of wastewater treatment and batteries positive material.Barium ferrate was prepared by SPE cation membrane in the anode chamber and barium manganate was prepared by the direct chemical technique. The synthesized solid barium ferrate and barium manganate were used as a cathode materials in the alkaline cell (Zn anode). XRD, SEM and IR were performed to identify the structure of the salts. The experimental results demonstrated that the ferrate salt and manganate salt battery appeared several energy and environmental advantage.Halogen anion X^- (X=I, Br) was immersed into an anion exchange membrane. The combing Pt-SPE and the mediator X^- system was utilized to degradation and decolorization acid chrome blue K. The electro-chemical behaviors of X in the electrolysis cell were investigated by I-V cyclic voltammetry and the steady state polarization. The decolorization rate was determinate by a visible photometer. Results showed that both of Br^- and I^- for degradation and decolorization of dye, acid chrome blue were efficient. The degradation reactions were fit a first order reaction with k=4.0×10^-4/S for Br^- and 1.39×10^-4/S for I^-, respectively.