International Journal of Environmental Bioremediation & Biodegradation
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International Journal of Environmental Bioremediation & Biodegradation. 2014, 2(3), 125-132
DOI: 10.12691/ijebb-2-3-5
Open AccessArticle

Microbial Degradation of Acid Blue Dye by Mixed Consortium

Maulin P Shah1,

1Industrial Waste Water Research Laboratory Division of Applied & Environmental Microbiology Enviro Technology Limited Plot No: 2413/14 GIDC, Ankleshwar Gujarat, India

Pub. Date: May 08, 2014

Cite this paper:
Maulin P Shah. Microbial Degradation of Acid Blue Dye by Mixed Consortium. International Journal of Environmental Bioremediation & Biodegradation. 2014; 2(3):125-132. doi: 10.12691/ijebb-2-3-5


A bacterial consortium was constructed using five different bacterial strains isolated from the effluent with the ability to degrade Acid Blue, a diazo dye. These organisms were identified as Pseudomonas putida (2 strains-designated as A & B), Bacillus subtillis, Pseudomonas aeruginosa (2 strains) using 16S rRNA analysis. The consortium was found to degrade 90% of the dye by 22 h in 80% diluted textile effluent supplemented with glucose and ammonium nitrate. Optimization studies using Response Surface Methodology have confirmed that the degradation process was predominantly influenced by agitation and pH where as glucose was found to have negative effect. TLC analyses indicated the presence of metanilic acid and peri acid in 24 h sample which disappeared by 48 h. The GC-MS analysis has confirmed the presence of methyl salicylic acid, catechol and β-ketoadipic acid with the RT values of 7.71, 10.88 and 15.04 respectively confirming the complete degradation of Acid Blue.

reactive red azo dye decolorization degradation pseudomonas putida

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