Abstract
Anodic oxidation is a promising process for degrading toxic and biologically refractory organic pollutants present in wastewater treatment. Proper selection of electrodes is the key to reach effective and economic operation. In this study, two types of electrodes, i.e. the recently developed Ti/BDD and Ti/SnO2-Sb2O5, which is generally believed to be superior to the conventional electrodes, were compared under the same conditions. It was found that the Ti/ BDD electrode could mineralize both phenol and reactive dyes effectively. But the Ti/SnO2-Sb2O5electrode could only mineralize phenol. When oxidizing more refractory reactive dyes, it demonstrated very poor activity. In addition, the Ti/BDD electrode had a service life of 264 h in an accelerated life test, but the Ti/SnO2-Sb2O5was irreversibly damaged within several seconds. The direct experimental comparison in the present study indicates that the Ti/BDD electrode is much better than the Ti/SnO2-Sb2O5electrode for pollutant oxidation.
Original language | English |
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Pages (from-to) | 185-191 |
Number of pages | 7 |
Journal | Journal of Applied Electrochemistry |
Volume | 35 |
Issue number | 2 |
DOIs | |
Publication status | Published - 1 Feb 2005 |
Externally published | Yes |
Keywords
- Anodic film
- Dyes
- Electro-oxidation
- Phenol
- Reactive dyes
- Wastewater
ASJC Scopus subject areas
- General Chemical Engineering
- Electrochemistry
- Materials Chemistry