Decolorization of azo dyes and simulated dye bath wastewater using acclimatized microbial consortium – Biostimulation and halo tolerance

Dafale, Nishant A.; Rao, N. Nageswara; Meshram, Sudhir U.; Wate, S. R.

doi:10.1016/j.biortech.2007.04.044

Cited by 156 publications

(60 citation statements)

References 19 publications

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“…At 1% salt concentration, the strain KMK6 showed maximum dye degradation ability while it displayed 95% decolorization at 2% salt. The consortium studies (Dafale et al 2008) and by pure isolate of Pseudomonas aeruginosa showed decreased decolorization efficiency as the salt concentration increased (Jadhav et al 2010). The salt-tolerating ability of the strain during dye degradation proposes the organism to be a better candidate.…”

Section: Discussionmentioning

confidence: 93%

Decolorization of textile dyes by Alishewanella sp. KMK6

Kolekar

Kodam

2011

Appl Microbiol Biotechnol

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Alishewanella sp. strain KMK6 was isolated from textile dye-contaminated soil. The strain was able to decolorize and degrade different azo dyes and displayed high dye degradation ability and tolerance. The bacterium could completely degrade 2.5 g l(-1) dye, Reactive Blue 59 within 6 h. The induction in the level of cytochrome P-450 and activities of azoreductase and NADH-dichlorophenolindophenol reductase were observed in the cells after dye decolorization indicating the role of these enzymes. The intermediates of Reactive Blue 59 degradation were identified by high-performance liquid chromatography, gas chromatography and mass spectroscopy, and Fourier transform infrared spectroscopy. The ecotoxicity has been evaluated for dye and its metabolites by 3-(4, 5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (a yellow tetrazole) and comet assay, and it revealed that the dye degradation products were nontoxic.

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Section: Discussionmentioning

confidence: 93%

Decolorization of textile dyes by Alishewanella sp. KMK6

Kolekar

Kodam

2011

Appl Microbiol Biotechnol

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“…The various organisms that degrade dyes are fungi, bacteria and actinomycetes. It is also known that a mixture of organisms degrades a dye better as compared to individual organisms as their complexity enables them to act on a variety of pollutants (Dafale et al 2008). White-rot fungi are better dye degraders than prokaryotes due to their extracellular nonspecific system capable of degrading a wide range of dyes (Christian et al 2005).…”

Section: Biodegradation Of Dyesmentioning

confidence: 99%

Applications of ligninolytic enzymes to pollutants, wastewater, dyes, soil, coal, paper and polymers

Yadav

2015

Environ Chem Lett

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The breakdown of plant lignin modifies the structure of lignocelluloses, thus making carbohydrates accessible for efficient bioconversion. White-rot fungi produce ligninolytic enzymes such as lignin peroxidase, manganese peroxidase, laccases and various peroxidases, which mineralize lignin efficiently. We review here applications of ligninolytic enzymes for the delignification of lignocellulosic materials, the removal of recalcitrant organic pollutants, wastewater treatment, decolorization of dyes, soil treatment, conversion of high molecular weight coal fractions to low molecular weight coal fractions, which could be used as a feed stock for the production of commodity chemicals, biopulping and biobleaching in paper industries and enzymatic polymerization in polymer industries.

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“…The various organisms which degrade dyes are fungi, bacteria and actinomycetes. It is also known that a mixture of organisms degrade a dye better as compared to individual organisms as their complexity enables them to act on a variety of pollutants (Dafale et al 2008). White rot fungi are better dye degraders than prokaryotes due to their extracellular nonspecific system capable of degrading a wide range of dyes .…”

Section: Biodegradation Of Dyesmentioning

confidence: 99%