Decolorization of diazo-dye Reactive Blue 172 byPseudomonas aeruginosa NBAR12

Bhatt, Nikhil; Patel, K. C.; Keharia, Haresh; Madamwar, Datta

doi:10.1002/jobm.200410504

Cited by 77 publications

(40 citation statements)

References 33 publications

(29 reference statements)

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“…The effluent laden water of Noyyal at Tirupur as well as effluent at waste water treatment plants have bacteria like Pseudomonas sp. and Achromobacter sp., and these bacterial species have shown potential to decolorize the dye effluent color in different studies (Bhatt et al 2005;Blumel et al 2001). Also Bacillus sp.…”

Section: Aspergillus Nigermentioning

confidence: 99%

Assessment of the impact of textile effluents on microbial diversity in Tirupur district, Tamil Nadu

et al. 2016

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The expedited advent of urbanization and industrialization for economic growth has adversely affected the biological diversity, which is one of the major concerns of the developing countries. Microbes play a crucial role in decontaminating polluted sites and degrades pollution load of textile effluent. The present study was based on identification of microbial diversity along the Noyaal river of Tirupur area. River water samples from industrial and non-industrial sites and effluent samples of before and after treatment were tested and it was found that microbial diversity was higher in the river water at the industrial site (Kasipalayam) as compared to the non-industrial site (Perur). Similarly, the microbial populations were found to be high in the untreated effluent as compared to the treated one by conventional treatment systems. Similar trends were observed for MBR treatment systems as well. Pseudomonas sp., Achromobacter sp. (bacterial species) and Aspergillus fumigates (fungal species), found exclusively at the industrial site have been reported to possess decolorization potential of dye effluent, thus can be used for treatment of dye effluent. The comparison of different microbial communities from different dye wastewater sources and textile effluents was done, which showed that the microbes degrade dyestuffs, reduce toxicity of wastewaters, etc. From the study, it can be concluded that the microbial community helps to check on the pollutants and minimize their affect. Therefore, there is a need to understand the systematic variation in microbial diversity with the accumulation of pollution load through monitoring.

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Section: Aspergillus Nigermentioning

confidence: 99%

Assessment of the impact of textile effluents on microbial diversity in Tirupur district, Tamil Nadu

et al. 2016

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“…Bioremediation of azo dyes is a process that reduces and cleaves azo bond under anaerobic conditions. The formed aromatic intermediate further gets mineralized under aerobic conditions (Bhatt et al 2005;Tastan et al 2010). It has been suggested that the azo bond cleavage is catalyzed by azoreductase, which is very sensitive to oxygen in the medium (Nikolova and Nenov 2004).…”

Section: Introductionmentioning

confidence: 99%

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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“…Fungal enzyme systems need low pH for optimal activity and longer retention times for complete decolorization (Swamy and Ramsay 1999). Bacteria studied for biodegradation include Pseudomonas NBAR (Bhatt et al 2005), Rhodopseudomonas palustris, etc. (Liu et al 2006).…”

Section: Introductionmentioning

confidence: 99%

Coordinate action of exiguobacterial oxidoreductive enzymes in biodegradation of reactive yellow 84A dye

et al. 2008

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A novel bacterial species identified as Exiguobacterium sp. RD3 degraded the diazo dye reactive yellow 84A (50 mg l(-1)) within 48 h at static condition, at 30 degrees C and pH 7. Lower salinity conditions were found to be favorable for growth and decolorization. Enzymatic activities of an H(2)O(2) independent oxidase along with laccase and an azoreductase suggest their prominent role during the decolorization of reactive yellow 84A. Presence of an H(2)O(2) independent oxidase in Exiguobacterium sp. RD3 was confirmed and hydrogen peroxide produced was detected by a coupled iodometric assay. Azoreductase activity was prominent in presence of cofactors NADH and NADP in mineral salt medium. Considerable depletion of COD of the dye solution during degradation of dye was indicative of conversion of complex dye into simple oxidizable products. Products of degradation were analyzed by HPLC, FTIR and GCMS. A possible product of the degradation was identified by GCMS. Degradation of dye resulted with significant reduction of phytotoxicity, confirming the environmentally safe nature of the degradation metabolites.

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Decolorization of diazo-dye Reactive Blue 172 byPseudomonas aeruginosa NBAR12

Cited by 77 publications

References 33 publications

Assessment of the impact of textile effluents on microbial diversity in Tirupur district, Tamil Nadu

Assessment of the impact of textile effluents on microbial diversity in Tirupur district, Tamil Nadu

Decolorization of textile dyes by Alishewanella sp. KMK6

Coordinate action of exiguobacterial oxidoreductive enzymes in biodegradation of reactive yellow 84A dye

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