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    Rights statement: This is the author’s version of a work that was accepted for publication in Separation and Purification Technology. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Separation and Purification Technology, 178, 2017 DOI: 10.1016/j.seppur.2016.12.052

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Combined electro-catazone/electro-peroxone process for rapid and effective Rhodamine B degradation

Research output: Contribution to journalJournal articlepeer-review

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  • Xinyang Li
  • Shaobin Sun
  • Xu Zhang
  • Guicheng Liu
  • Clark Renjun Zheng
  • Jianzhong Zheng
  • Dayi Zhang
  • Hong Yao
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<mark>Journal publication date</mark>7/05/2017
<mark>Journal</mark>Separation and Purification Technology
Volume178
Number of pages4
Pages (from-to)189-192
Publication StatusPublished
Early online date16/01/17
<mark>Original language</mark>English

Abstract

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 O3 gas diffuser, while carbon polytetrafluoroethylene was used as the cathode. During O3/O2 mixture flowing through the MFT-PTGD, O3 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. The individual processes show integral effects 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 O3 flow-through mode is superior to O3 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.

Bibliographic note

This is the author’s version of a work that was accepted for publication in Separation and Purification Technology. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Separation and Purification Technology, 178, 2017 DOI: 10.1016/j.seppur.2016.12.052