Comparative studies on potential of consortium and constituent pure bacterial isolates to decolorize azo dyes.
The decolorization potential of the consortium HM-4 constituted by mixing four laboratory isolates identified as Bacillus cereus (BN-7), Pseudomonas putida (BN-4), Pseudomonas fluorescens (BN-5) and Stenotrophomonas acidaminiphila (BN-3) was compared with that of individual isolates. Six different azo dyes viz., C.I. Acid Red 88 (AR-88), C.I. Acid Red 119 (AR-119), C.I. Acid Red 97 (AR-97), C.I. Reactive Red 120 (RR-120), C.I. Acid Blue 113 (AB-113) and C.I. Acid Brown 100 (AB-100) were used in this study. The individual bacterial isolates were not able to completely decolorize these dyes, except for dyes AR-119 and AB-113. The consortium HM-4 was able to decolorize all the dyes used at an initial dye concentration of 20 mg L(-1) at a significantly higher rate as compared to that achieved by individual isolates.
Khehra
Manjinder Singh
MS
Department of Microbiology, Guru Nanak Dev University, Amritsar 143005, India.
Saini
Harvinder Singh
HS
Sharma
Deepak Kumar
DK
Chadha
Bhupinder Singh
BS
Chimni
Swapandeep Singh
SS
D001391:Azo Compounds / Q000378:metabolism*; D001419:Bacteria / Q000145:classification / Q000302:isolation & purification / Q000378:metabolism*; D001673:Biodegradation, Environmental; D003116:Color; D004396:Coloring Agents / Q000378:metabolism*; D007220:Industrial Waste; D014865:Waste Disposal, Fluid; D018508:Water Purification / Q000379:methods*
D001391:Azo Compounds; D004396:Coloring Agents; D007220:Industrial Waste