Electro-coagulation (EC) is one of the effective
techniques to remove colour, COD and organic compounds from
wastewater. In this paper electro coagulation technique has been
used for the removal of colour and COD from dye solutions
containing Direct Black 22 and Acid Red 97 using batch process.
For batch the process effect of operational parameters such as
current density, initial pH of the solution, time of electrolysis and
electrode materials were studied to attempt maximum reduction
of COD and colour. Different electrodes used in practical work
were iron, and aluminium with D.C. current
