In all electrochemical processes, Voltage is the most important parameter for controlling the reaction rate within the reactor. It is clear that, the rate of dye removal increases with increasing voltages from 10 to 40 Vol at the initial concentration of dye 100 mgL-1. The color removal efficiency increased to 98.16% from 97.51% at 40v and for voltage 20v from 97.27% to 97.94%. When voltage increases, the amount of ion produced on the electrodes increases. Therefore, there is an increase in floc production and hence an improvement in the color removal efficiency