Dyes are abundant class of coloured organic compounds that present an increasing environmental danger. Textile requires a large volume of fresh water fairly high purities and equally large volume of waste water after the cloth processing operation. During dye production and textile manufacturing process a large amount of fresh water containing dye stuffs with intensive colour and toxicity can be introduced into aquatic system.
While colour brightens our world, they are also to be seen “every where”. We are not talking the nature here, but products that are created by industries like food colour, textile dye, printing ink, pigments, acids, even colours used in plastic. Untreated and some times treated effluents from these industries, released into rivers, lakes or through drainage systems, seep into the ground water and adjoining water bodies.

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