Have you ever wondered the ways in which a fabric is dyed. The images or the thoughts that comes to your mind is that of wasteful chemical agents, toxic dye bath liquor that are thrown away often a source of pollution. A new method has arrived after research that is called as Electrochemical Dyeing. In the Electro chemical Dyeing with the vat dyes there is effective and efficient replacement of environmentally harmful chemical reducing agents with electrons.

The Process of Electrochemical Dyeing involves the following steps. That is explained here in detail. Here, the reducing agent, instead of being added as with the typical conventional method is replaced by an innovative cathodic electron transfer. This is facilitated by a reversible redox system (mediator). An electrochemical cell is used to perform the reduction oxidation process. Actually the Dyeing apparatus is coupled to the Electrochemical cell and the dye bath gets reduced effectively through electrochemical process. Actually it is the mediator, that reduces the dye bath after addition of the oxidised dyestuff. The cathodic reduction enhances the redox potential required for proper dyestuff reduction. This is an all together new technique in the range of vat dyeing. The neat combination of the components enables an almost closed loop in the process of dye bath recycling. Lastly, the oxidised dyestuff that is left insoluble is eliminated. The electrochemical dyeing process. Offers the unique concept of reusing the dissolved mediator system.

• Water savings that is around 85% of the volumes as being used in the normal dyeing process.
• Environmentally sound, this is perhaps the biggest benefit with all the chemicals released are biodegradable.
• Savings in the chemical costs as chemical wastes reduced by 80%
• A totally reversible redox system.
• Full Dye bath recycling.
• Effectively eliminates around 90% of biological oxygen demand as well as chemical oxygen demand levels in the effluent of the dyehouse.