The textile dyeing factories are the major sources of environmental
pollution due to the discharge of wastes to rivers. Normally
colour is discernible at a dye concentration higher than 1 ppm and
the average concentration of 300 ppm has been reported in the
effluents from the textile production [3]. Untreated disposal of this
wastewaters can have bad effects on water and human bodies
[4,5]. Removal methods of dye molecules from water can be
classified in many categories such as physical, chemical, biological,
radiation and electrochemical processes. Although there are many
methods for the removal of the dyes, it is difficult to treat the
wastewater by using traditional methods, because most of thesynthetic dyes are stable to light, chemicals and biological
treatment, etc. [6]