Bacterial Decolourization of Textile Azo Dye Direct Red-28 under Aerobic Condition

ISSN: 0973-7510

E-ISSN: 2581-690X

bacterial-decolourization-of-textile-azo-dye-direct-red-28-under-aerobic-condition

J. Hemapriya¹ , Rajesh Kannan² and S. Vijayanand¹

¹Department of Biotechnology, Administrative Management College, Bangalore, India.

²Department of Microbiology,Bharathidasan University, Bangalore, India.

J Pure Appl Microbiol. 2010;4(1):309-314

Received: 08/11/2009 | Accepted: 21/12/2009 | Published: 30/04/2010

Abstract

Bacterial strains (DRS-1, DRS-2,DRS-3,DRS-4) isolated from dye contaminated sludge,decolorized an azo dye namely Direct Red-28.Of these,DRS-1 & DRS-3 were selected for further studies because of their high efficiency to decolorize the dye. Effect of Physio-chemical parameters, such as aeration/agitation, concentration of glucose, peptone and P^H of the culture medium on dye decolourization by isolates DRS-1 & DRS-3 were analyzed.DRS-1 had higher dye decolorizing ability than DRS-3.Under optimal conditions, DRS-1 decolorized Direct Red-28 (100ppm) upto 94.80%.The highest decolourization ability of isolate DRS-1 can thus be exploited in the treatment of industrial effluent containing azo dyes.

Keywords

Azo Dye, Congo Red, Decolourization, Direct Red-28, Industrial Effluent

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