Journal
INTERNATIONAL BIODETERIORATION & BIODEGRADATION
Volume 104, Issue -, Pages 21-31Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ibiod.2015.04.027
Keywords
Azo dye; Azoreductase; Laccase; Peroxidase; Bioremediation
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Azo dyes are aromatic compounds with one or more -N=N- groups. These dyes are the most important and largest class of synthetic dyes used in commercial applications. Several methods have already been used to treat textile effluents including physico-chemical methods such as filtration, carbon activated, coagulation and chemical flocculation. Although these methods are effective, but they are expensive and involve formation of concentrated sludge that creates a secondary disposal problem. In recent years, use of bioremediation based technologies for treating textile wastewater containing dyes has attracted much interest. The ability of microorganisms and their dye degrading enzymes to decolorize and metabolize the dyes has long been known and has proved to be the best option for bioremediation. As far as decolorization and degradation of textile dyes are concerned, azoreductases, laccases, peroxidases and many other important enzymes seem to have shown great potential to decolorize the textile dyes and these enzymes are considered as effective molecular weapon for bioremediation of azo dyes. (c) 2015 Elsevier Ltd. All rights reserved.
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