Influence of anionic surfactant on the process of electro-Fenton decolorized methyl orange.
The electro-Fenton process has been shown to be very successful to remove dyes from water. However, the influence of other constituents in dyeing industry wastewater, such as Sodium Dodecyl Sulfate (SDS) surfactants, has not been investigated. In this study, the effect of SDS surfactant on the kinetics of Methyl Orange degradation undergoing Electro-Fenton process was investigated. Results show that Methyl Orange degradation rate decreased as SDS concentration (below Critical Micelle Concentration, CMC) increased, which was attributed to the consumption of hydroxyl radicals (( )OH) by surfactants. The kinetics modeling indicates the reaction was the first-order reaction to Methyl Orange even SDS existing. The pseudo first-order rate constants decreased as SDS concentration increased.
Ren
B X
BX
College of Environmental Engineering, Jilin Normal University, Siping, Jilin 136000, China. baixiang_ren@yahoo.com.cn
D000838:Anions; D001391:Azo Compounds / Q000737:chemistry* / Q000302:isolation & purification; D001673:Biodegradation, Environmental; D003116:Color; D004396:Coloring Agents / Q000302:isolation & purification; D006861:Hydrogen Peroxide / Q000737:chemistry; D017665:Hydroxyl Radical; D007220:Industrial Waste; D007700:Kinetics; D008823:Micelles; D012967:Sodium Dodecyl Sulfate / Q000737:chemistry; D013501:Surface-Active Agents / Q000737:chemistry*; D014865:Waste Disposal, Fluid / Q000379:methods*; D014874:Water Pollutants, Chemical; D018508:Water Purification / Q000379:methods*
D000838:Anions; D001391:Azo Compounds; D004396:Coloring Agents; D007220:Industrial Waste; D008823:Micelles; D013501:Surface-Active Agents; D014874:Water Pollutants, Chemical; D017665:Hydroxyl Radical; D012967:Sodium Dodecyl Sulfate; C100258:methyl orange; D006861:Hydrogen Peroxide