Electrochemical Treatment of Dye Solution by Oxalate Catalyzed Photoelectro-Fenton Process Using a Carbon Nanotube-PTFE Cathode: Optimization by Central Composite Design
| Autor: | Ali R. Khataee, Mahmoud Zarei, Amir R. Khataee |
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| Rok vydání: | 2011 |
| Předmět: |
Materials science
Central composite design Inorganic chemistry chemistry.chemical_element Carbon nanotube Electrochemistry Pollution Oxalate Cathode law.invention chemistry.chemical_compound chemistry law Environmental Chemistry Response surface methodology Carbon Water Science and Technology Visible spectrum |
| Zdroj: | CLEAN - Soil, Air, Water. 39:482-490 |
| ISSN: | 1863-0650 |
| DOI: | 10.1002/clen.201000120 |
| Popis: | Decolorization of C.I. Basic Blue 3 (BB3) by oxalate catalyzed photoelectro-Fenton process based on carbon nanotube-polytetrafluoroethylene (CNT-PTFE) electrode as cathode under visible light was studied. A comparison of electro-Fenton, photoelectro-Fenton, and photoelectro-Fenton/oxalate processes for decolorization of the solution containing BB3 has been performed. The results showed that color removal follows the decreasing order: photoelectro-Fenton/oxalate > photoelectro-Fenton > electro-Fenton. Response surface methodology (RSM) was employed to assess individual and interactive effects of the four main independent parameters on the decolorization efficiency. A central composite design (CCD) was employed for optimization of photo-electro-Fenton/oxalate treatment of BB3. The analysis of variance (ANOVA) showed a high coefficient of determination value (R 2 = 0.958) and satisfactory prediction second-order regression. This study clearly showed that RSM was one of the suitable methods to optimize the operating conditions. |
| Databáze: | OpenAIRE |
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