The Colour of Water- How green is our dyeing process?
The textile dyeing industry contributes to approximately 20% of global water pollution. Current estimates suggest 200 billion litres of coloured waste effluent are discharged into receiving water bodies annually and 17-20% of industrial water pollution can be attributed to the textile dyeing industry. Despite recent technological improvements in many other sectors there remains little progression in reducing the damage done by the dyeing process. This research focuses on the environmental impact of Azo dyes, the most common class of textile dyes.
Following a literature review of the chemistry behind current practice, this research explores the potential for reducing the environmental impact of azo dyes; in particular, the possibility of employing local methods of removing and/or reusing dye waste. The aim is to develop these processes in practice and improve the sustainability of dyeing. and improve the sustainability of dyeing.