Kinetics of 2,6-dimethylaniline oxidation by various Fenton processes

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• 作者：Nalinrut Masomboon^a ; Chavalit Ratanatamskul^b ; Ming-Chun Lu^c ; ^{mmclu@mail.chna.edu.tw"" rel=""nofollow} ; ^{mclu@ms17.hinet.net"" rel=""nofollow}
• 关键词：2 ; 6-Dimethylaniline ; Kinetics ; Fenton process ; Electro-Fenton process ; Photoelectro-Fenton process
• 刊名：Journal of Hazardous Materials
• 出版年：2011
• 出版时间：15 August 2011
• 年：2011
• 卷：192
• 期：1
• 页码：347-353
• 全文大小：336 K

文摘

The kinetics of 2,6-dimethylaniline degradation by Fenton process, electro-Fenton process and photoelectro-Fenton process was investigated. This study attempted to eliminate the potential interferences from intermediates by making a kinetics comparison of Fenton, electro-Fenton and photoelectro-Fenton methods through use initial rate techniques during the first 10 min of the reaction. Exactly how the initial concentration of 2,6-dimethylaniline, ferrous ions and hydrogen peroxide affects 2,6-dimethylaniline degradation was also examined. Experimental results indicate that the 2,6-dimethylaniline degradation in the photoelectro-Fenton process is superior to the ordinary Fenton and electro-Fenton processes. Additionally, for 100 % removal of 1 mM 2,6-dimethylaniline, the supplementation of 1 mM of ferrous ion, 20 mM of hydrogen peroxide, current density at 15.89 A m⁻² and 12 UVA lamps at pH 2 was necessary. The overall rate equations for 2,6-dimethylaniline degradation by Fenton, electro-Fenton and photoelectro-Fenton processes were proposed as well.