Degradation of acid fuchsine by a modified electro-Fenton system withmagnetic stirring as oxygen supplying

The current modified electro-Fenton system was designed to develop a more convenient and e cient undivided system for practicalwastewater treatment. The system adopted a cathode portion that employed magnetic stirring instead of common oxygen gas di usionor gas sparging to supply oxygen gas for the electrolyte solution. Key factors influencing the cathode fabrication and activitywere investigated. The degradation of acid fuchsine with a self-made graphite-polytetrafluorethylene cathode was studied using aspectrophotometer. It was found that the cathode generated hydrogen peroxide with high current e ciency and the hydrogen peroxideyield of the cathode did not decay after 10 times reuse. With the Pt anode at a ferrous ion concentration of 0.5 mmol/L, a pH of 3, andusing magnetic stirring, dye decolorization could be rapidly accomplished but the destruction of benzene rings and intermediates wasfairly di cult. With a Fe anode, dye degradation was more complete.