The optimal factors of electro-Fenton process to decolorization the azo ddye methyl orange in aqueous medium
- Resource Type
- Conference
- Authors
- Chunwei Yang; Dong Wang
- Source
- 2011 International Conference on Remote Sensing, Environment and Transportation Engineering Remote Sensing, Environment and Transportation Engineering (RSETE), 2011 International Conference on. :3682-3685 Jun, 2011
- Subject
- Signal Processing and Analysis
Power, Energy and Industry Applications
Geoscience
Communication, Networking and Broadcast Technologies
Components, Circuits, Devices and Systems
Computing and Processing
Cathodes
Current
Anodes
Kinetic theory
Oxidation
Bridges
Degradation
Electro-Fenton
Azo dye
kinetics study
- Language
In this study, the electro-Fenton system had been established and graphite plates were selected as electrodes. Azo dye methyl orange was used as the model pollutant. The electrolytic bath was divided into cathode cell and anode cell two parts. The two cells were connected by salt bridge. The kinetics of methyl orange decoloration in these two cells was obtained in the optimal conditions. The results indicate that the decay rate of methyl orange was higher in the cathode cell in the case of lower electric current for more H 2 O 2 detected. The discolored rates reach 96.23% and 85.24% with the electric current density 0.5mA/cm 2 and 2mA/cm 2 respectively. The kinetics of the cathode process should be regarded as first-order reaction. But in the anode cell the decay rate of methyl orange was increased with the current density increasing when the electric current density under 2mA/cm 2 . The kinetics of the anode process should be regarded as zero-order reaction.