期刊
SEPARATION AND PURIFICATION TECHNOLOGY
卷 178, 期 -, 页码 189-192出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.seppur.2016.12.052
关键词
Electro-cataperoxone; Electro-catazone; Electro-peroxone; Refractory organic pollutant; Hydroxyl radical ((OH)-O-center dot)
资金
- Fundamental Research Funds for the Central Universities [2016JBZ008, 2016RC041]
An integral electro-catazone and electro-peroxone (E-cataperoxone) process was developed for quick and effective oxidation of Rhodamine B (RhB) as the model refractory organic pollutant in this study. A mesoflower-structured TiO2-coated porous Titanium gas diffuser (MFT-PTGD) acted as both the anode and the O-3 gas diffuser, while carbon polytetrafluoroethylene was used as the cathode. During O-3/O-2 mixture flowing through the MFT-PTGD, O-3 was electrochemically catalyzed simultaneously by the TiO2 mesoflower at the anode (via an electro-catazone reaction) and the in situ generated H2O2 at the cathode (via an electro-peroxone reaction) to achieve a high yield of (OH)-O-center dot. The E-cataperoxone process shows an integral effect and significantly enhances the RhB degradation rate and efficacy. Additionally, owing to the unique three-dimensional porous structure and flow-through configuration of the MFT-PTGD anode, the O-3 flow-through mode is superior to O-3 flow-by mode for the E-cataperoxone oxidation of RhB. These results suggest that the E-cataperoxone process is an effective and promising means of degrading refractory organic pollutants in wastewater. (C) 2017 Elsevier B.V. All rights reserved.
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