Decolorization of reactive orange 16 via ferrate(VI) oxidation assisted by sonication

Authors : SERKAN ŞAHİNKAYA

Pages : 577-586

View : 11 | Download : 7

Publication Date : 0000-00-00

Article Type : Research Paper

Abstract :The decolorization of azo dye C.I. reactive orange 16 insert ignore into journalissuearticles values(RO 16); via ferrateinsert ignore into journalissuearticles values(VI); and sono-ferrateinsert ignore into journalissuearticles values(VI); methods, which is the combination of the ferrateinsert ignore into journalissuearticles values(VI); oxidation method with sonication, has been achieved in the present study. The influences of some important operating parameters, which are the initial pH, the concentration of potassium ferrateinsert ignore into journalissuearticles values(VI); insert ignore into journalissuearticles values(K$_{2}$FeO$_{4});$ and the RO 16 dye, and ultrasonic density insert ignore into journalissuearticles values(for only the sono-ferrateinsert ignore into journalissuearticles values(VI); method);, on the color removal have been investigated. The optimum conditions have been determined as pH = 7 and [K$_{2}$FeO$_{4}$] = 50 mg L$^{-1}$ for the individual ferrateinsert ignore into journalissuearticles values(VI); oxidation method and pH = 7 and [K$_{2}$FeO$_{4}$] = 50 mg L$^{-1}$ by direct sonication at 0.50 W mL$^{-1}$ ultrasonic density and 20 kHz fixed frequency for the sono-ferrateinsert ignore into journalissuearticles values(VI); method. The color removal efficiencies were 85% by ferrateinsert ignore into journalissuearticles values(VI); method and 91% by sono-ferrateinsert ignore into journalissuearticles values(VI); method. Kinetic studies were also performed for the decolorization of RO 16 under the optimized conditions at room temperature. It was seen that the oxidative decolorization of RO 16 via the sono-ferrateinsert ignore into journalissuearticles values(VI); method happened more rapidly because of the production of OH$^{\bullet }$ radical through sonication compared to the individual ferrateinsert ignore into journalissuearticles values(VI); method.
Keywords : Color removal, ferrate VI, , reactive orange 16, sono ferrate VI, , ultrasound