Journal
INTERNATIONAL BIODETERIORATION & BIODEGRADATION
Volume 63, Issue 4, Pages 462-469Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ibiod.2009.01.003
Keywords
Azo dyes; Bacterial consortium; Carbon source; Decolorization; Bacillus vallismortis; Bacillus megaterium
Funding
- Department of Biotechnology, Ministry of Science and Technology, Govt. of India, New Delhi
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The decolorization potential of two bacterial consortia developed from a textile wastewater treatment plant showed that among the two mixed bacterial culture SKB-II was the most efficient in decolorizing individual as well as mixture of dyes. At 1.3 g L-1 starch supplementation in the basal medium by the end of 120 h decolorization of 80-96% of four out of the six individual azo dyes Congo red. Bordeaux, Ranocid Fast Blue and Blue BCC (10 mg L-1) was noted. The culture exhibited good potential ability in decolorizing 50-60% of all the dyes (Congo red, Bordeaux, Ranocid Fast Blue and Blue BCC) when present as a mixture at 10 mg L-1. The consortium SKB-II consisted of five different bacterial types identified by 16S rDNA sequence alignment as Bacillus vallismortis, Bacillus pumilus, Bacillus cereus, Bacillus subtilis and Bacillus megaterium which were further tested to decolorize dyes. The efficient ability of this developed consortium SKB-II to decolorize individual dyes and textile effluent using packed bed reactors is being carried out. (C) 2009 Elsevier Ltd. All rights reserved.
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