期刊
CLEAN-SOIL AIR WATER
卷 39, 期 5, 页码 482-490出版社
WILEY
DOI: 10.1002/clen.201000120
关键词
Advanced oxidation processes; Carbon nanotube; Carbon nanotube-PTFE cathode; Decolorization; Electro-Fenton; Experimental design
类别
资金
- University of Tabriz, Iran
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 photoelectro-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.
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