Dyes are usually used by many industries such as dyestuffs, textile, paper, plastics, tannery,and paint to color their products and also consume substantial volumes of water. As a result,they generate a considerable amount of colored wastewater (Grégorio, 2006). Synthetic dyespossess certain properties which make them keep unaltered long time such as resistance toabrasion, photolytic stability, resistance to chemical and bacterial attack. Therefore, most ofthese compounds pose a double environmental problem from both the aesthetic andtoxicological standpoint. Their presence in water causes phenomena such as eutrophication,underoxygenation, color and odor alteration, as well as persistence and long-termbioaccumulation (Sirés et al. 2008). The major pollutants identified in the textile wastewaterare high pH, color, nutrients (nitrogen and phosphorus), inorganic salts and refractoryorganics (Karthikeyan et al., 2011).
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