disperse dyes

dyeing properties

bleaching

reactive dyes

dye wastewater

reactive dyeing

dyeing process

cotton fabrics

Journal of environmental chemical engineering

Three colouration process was analyzed, in which consumption of water, the spent of electrical and thermal energy, emission of carbon dioxide besides effluent toxicity of dyeing of polyamide, cotton and polyester knits were approached. the dyeing of polyamide knit presented lowest consumption of electrical energy, the dyeing of polyester knit presented the lowest consumption of thermal energy and emission of co2 molecules into atmosphere, and the effluent of cotton dyeing presented lowest acute toxicity (CE50) to Daphnia similis.

Toxicity and environmental impacts approached in the dyeing of polyamide, polyester and cotton knits