Decolorization and biodegradation of reactive dyes and dye wastewater by a developed bacterial consortium

A bacterial consortium (consortium GR) consisting of Proteus vulgaris NCIM-2027 and Micrococcus glutamicus NCIM-2168 could rapidly decolorize and degrade commonly-used sulfonated reactive dye Green HE4BD and many other reactive dyes. Consortium GR shows markedly higher decolorization activity than t...

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Bibliographic Details
Published in:Biodegradation (Dordrecht) 2010-11, Vol.21 (6), p.999-1015
Main Authors: Saratale, R. G, Saratale, G. D, Chang, J. S, Govindwar, S. P
Format: Article
Language:English
Subjects:
Aquatic Pollution
Azo Compounds - metabolism
Bacteria
Bacteria - drug effects
Bacteria - enzymology
Bacteria - growth & development
Bacteria - metabolism
Biodegradation
Biodegradation of pollutants
Biodegradation, Environmental - drug effects
Biological and medical sciences
Biomedical and Life Sciences
Biotechnology
Carbon - analysis
Carbon - pharmacology
Chemical reactions
Chromatography, High Pressure Liquid
Color
Coloring Agents - chemistry
Coloring Agents - metabolism
Coloring Agents - toxicity
Consortia
Crack opening displacement
Decoloring
decolorization
Degradation
Dye industry
Dye wastewater
Dyes
Environment and pollution
Enzymes
Fundamental and applied biological sciences. Psychology
Geochemistry
Green HE4BD
Hydrogen-Ion Concentration - drug effects
Industrial applications and implications. Economical aspects
Industrial Waste - analysis
Life Sciences
Microbial consortium
Microbiology
Micrococcus
Microorganisms
Nitrogen - pharmacology
Organic dyes
Original Paper
Phaseolus - drug effects
Phytotoxicity assay
Proteus vulgaris
Purification
Sewage
Soil Science & Conservation
Spectrophotometry, Ultraviolet
Sulfonated reactive dye
Terrestrial Pollution
Textile Industry
Time Factors
Toxicity Tests
Waste Disposal, Fluid
Waste Management/Waste Technology
Waste materials
Waste Water Technology
Wastewater
Water Management
Water Pollution Control
Water Purification - methods
Water treatment
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Summary:A bacterial consortium (consortium GR) consisting of Proteus vulgaris NCIM-2027 and Micrococcus glutamicus NCIM-2168 could rapidly decolorize and degrade commonly-used sulfonated reactive dye Green HE4BD and many other reactive dyes. Consortium GR shows markedly higher decolorization activity than that of the individual strains. The preferable physicochemical parameters were identified to achieve higher dye degradation and decolorization efficiency. The supplementation of cheap co-substrates (e.g., extracts of agricultural wastes) could enhance the decolorization performance of consortium GR. Extent of mineralization was determined with TOC and COD measurements, showing nearly complete mineralization of Green HE4BD by consortium GR (up to 90% TOC and COD reduction) within 24 h. Oxidoreductive enzymes seemed to be involved in fast decolorization/degradation process with the evidence of enzymes induction in the bacterial consortium. Phytotoxicity and microbial toxicity studies confirm that the biodegraded products of Green HE4BD by consortium GR are non-toxic. Consortium GR also shows significant biodegradation and decolorization activities for mixture of reactive dyes as well as the effluent from actual dye manufacturing industry. This confers the possibility of applying consortium GR for the treatment of industrial wastewaters containing dye pollutants.
ISSN:0923-9820
1572-9729
DOI:10.1007/s10532-010-9360-1