Removal of indigo dye by photocatalysis process using Taguchi experimental design

Authors : Gamze DOĞDU OKÇU, Tuğba TUNACAN, Emre DİKMEN

Pages : 63-72

Doi:10.35208/ert.457739

View : 14 | Download : 11

Publication Date : 2019-06-30

Article Type : Research Paper

Abstract :The major concern of the present research is degradation of hazardous and stable Indigo dye used in industrial denim dying process. For this purpose, a heterogeneous photocatalysis process was carried out to treat aqueous solution of Indigo dye using pure titanium dioxide insert ignore into journalissuearticles values(TiO 2 ); in a batch reactor system under ultraviolet A insert ignore into journalissuearticles values(UVA); light for 210 min. In the study, individual and synergistic effects of factors such as TiO 2 dosage, pH, and initial dye concentration were scrutinized. Moreover, Taguchi statistical method was performed to optimize influential parameters. The results obtained from the study that TiO 2 concentration had the most effective factor on the Indigo dye degradation. The optimal conditions for dye removal were A insert ignore into journalissuearticles values(pH); at level 2 insert ignore into journalissuearticles values(4);, B insert ignore into journalissuearticles values(initial dye concentration); at level 1 insert ignore into journalissuearticles values(10 mg/L); and C insert ignore into journalissuearticles values(TiO 2 concentration); at level 4 insert ignore into journalissuearticles values(1.5 g/L);. The results presented that the theoretically predicted value for degradation efficiency insert ignore into journalissuearticles values(100%); was confirmed by the experimental value insert ignore into journalissuearticles values(100%);.  
Keywords : Indigo dye, Optimization, Photocatalytic degradation, Taguchi method, water treatment