Application Of Functional Polymeric Membranes In Photocatalytic Degradation And Electro-generated Ferrate

Fe²⁺ was embedded in Nation cation-exchange membrane, methylene blue wasdegradated by photocatalytic reaction of Fe³⁺/Fe²⁺ system. The decolorization ratewas 90%. The influence of H₂O₂ and pH was discussed. The reaction of thephotocatalytic degradation of the methylene blue solution meeted first-order kineticlaw, and the apparent rate constant was 0.5689min^-1.The polyelectrolyte membrane was prepared by interaction between cationpolyacrylamide and carboxymethylcellulose using Fe³⁺ as linking reagent.CPAM-CMC membrane was characterized by FTIR and SEM. The experiment resultsshowed that CPAM-CMC membrane was available in preventing FeO₄^2- expanding tocathode chamber and supplementing OH^- in anode chamber in time from cathodechamber.The water treatment ferrate was prepared by electrolysis in diaphragm bath withdouble cathode chamber and porous cylinder cast iron anode. The higher current yieldand higher concentration was maintained. The result of ferrate oxidative degradationof benzidine wastewater showed that the removal rate of CODCr was about 85% andthe final products were small molecule inorganic compounds.