title: Comparative studies on potential of consortium and constituent pure bacterial isolates to decolorize azo dyes.
abstract: 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.
authors.affiliation: Department of Microbiology, Guru Nanak Dev University, Amritsar 143005, India.
authors.forename: Manjinder Singh
authors.initials: MS
authors.lastname: Khehra
authors.forename: Harvinder Singh
authors.initials: HS
authors.lastname: Saini
authors.forename: Deepak Kumar
authors.initials: DK
authors.lastname: Sharma
authors.forename: Bhupinder Singh
authors.initials: BS
authors.lastname: Chadha
authors.forename: Swapandeep Singh
authors.initials: SS
authors.lastname: Chimni
mesh_terms: 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*
chemical_list: D001391:Azo Compounds; D004396:Coloring Agents; D007220:Industrial Waste