In this study, electrocoagulation of two textile dyes from aqueous solutions by different power supplies was carried out.
Aluminium electrodes were used as sacrificial electrodes in parallel connection modes. Direct current (DC) was obtained from a DC power supply operated at galvanostatic mode while alternating pulse current (APC) was obtained by a time relay integrated with DC power supply. Dye and TOC removal efficiencies were considered when DC and APC were compared technically. Further-more, various cost items were used to calculate the total operation cost of both DC and APC systems by means of TOC and dye removal.