BIOLOGICAL DEGRADATION OF A SIMULATED TEXTILE EFFLUENT

Abstract

The textile industry effluents possess manypollutants; amongst them, the phenol composites arecausing of cancer. Thus, this work aimed the biologicaldegradation of the Remazol blue dye, for to adjust thiseffluent to Brazilian Law. Reactors contained the bacteriafrom Capibaribe River, Recife – PE, Brazil. Results showedthat bacteria had affinity to the used dye at anyone studiedpH, microorganism and dye contents. From results, it wasobserved: that the glucose content is a limiting factor thisprocess and on glucose contents below of 7% the dyedegradation is insignificant. Optimal condition of Remazolblue dye degradation was obtained at 0.15 g/L of dyecontent, 1.5 mL/100 mL of microorganism content, pH 6 and1% of glucose content, which a degradation yield of 96.6%had been find. This introduces that this biological processwas efficient and it could be used on the effluent treatmentby the textile industries.Index Terms ⎯ Colorant, biodegradation, textile effluent,sustainable development.