Decolorization of azo dyes using contact glow discharge electrolysis

Abstract

Abstract Contact glow discharge electrolysis (CGDE) is a proved plasma electrolysis method effectively used for the treatment of organic wastewater. This study investigated the decolorization process of three textile dyes (Remazol Red RR, Remazol Yellow FG, and Remazol Brilliant Violet) using CGDE aided by air injection. The results indicated that air injection was able to increase the decolorization of Remazol Red RR up to 46.7 % in 180\u2009min. In addition, using this method resulted in good decolorization efficiencies with the three dyes (11,520, 24,412.5, and 8,820\u2009kJ/mmol for Remazol Red RR, Remazol Yellow FG, and Remazol Brilliant Violet, respectively).