Electro-coagulation of three direct dyes from wastewater: Comparative study

Electro-coagulation (EC) is an efficient process for removing contamination and can be used as a fast,easy, economical and low cost way needing less equipment and limited space. This study wasdesigned to treatment of synthetic textile wastewater using Fe/Al electrodes with the process of EC.As a result, it is concluded that treatment of the textile wastewater can be successfully achieved for three acid dyes with satisfactory color removal efficiency (>98.6 %). The optimum operatingparameters are, pH:4, T:250C, electrolyte dosages:0.8 g/L, water recovery:0.78 L/L of wastewater, current density:120A/m2, electrode distance:1.5cm, contact time:15 min for Direct Black ANBN and Direct Yellow 12 and 7 min for Direct Black VSF

Keywords:

Direct Black VSF dye , Direct Black ANBN dye , Removal efficiency , Direct Yellow 12 dye , Electro-coagulation