Decolorisation and detoxification of Direct Blue-15 by a bacterial consortium

Kumar, Koel; Devi, Sivanesan Saravana; Krishnamurthi, Kannan; Dutta, Dipanwita; Chakrabarti, Tapan

doi:10.1016/j.biortech.2006.10.037

Cited by 64 publications

(21 citation statements)

References 9 publications

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“…aerobic decolourization of reactive dyes. A similar result was obtained by Kumar et al (2007) Padmavathy et al (2003) in which simulated textile effluent was supplemented with starch and yeast extract to provide nutrients for biomass maintenance and to enhance biodegradation. B. cereus performed well because they are nutritionally versatile and carries an efficient enzymatic system for the cleavage of azo bonds, which cause rapid decolourization of different azo dyes and thus they are able to biodegrade many natural and synthetic organic compounds.…”

Section: Spectrophotometric Analysis Of Decolourizationsupporting

confidence: 62%

Aerobic decolourization of two reactive azo dyes under varying carbon and nitrogen source by Bacillus cereus

Ola¹,

Akintokun²,

Akpan³

et al. 2010

Afr. J. Biotechnol.

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Bacillus cereus isolated from dye industrial waste, that is, effluent and soil samples was screened for its ability to decolourize two reactive azo dye -cibacron black PSG and cibacron red P4B under aerobic conditions at pH 7 and incubated at 35°C over a five day period. Different carbon and nitrogen sources were used for the decolourization study. B. cereus was able to decolourize cibacron red P4B by (81%) using the combination of ammonium nitrate and sucrose, while it decolourizes cibacron black PSG by (75%) using yeast extract and lactose.

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Section: Spectrophotometric Analysis Of Decolourizationsupporting

confidence: 62%

Aerobic decolourization of two reactive azo dyes under varying carbon and nitrogen source by Bacillus cereus

Ola¹,

Akintokun²,

Akpan³

et al. 2010

Afr. J. Biotechnol.

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“…For this purpose, a toxicological assay such as microbial toxicity used to determine the toxicity of degradation products (Kalyani et al 2008). In this work, mechanism of decolorization was confirmed by both biosorption and biodegradation (Aravindhan et al 2007;Kumar et al 2007). In the former case, MB was adsorbed onto the surface of bacterial cells, this is judged by the examination of the absorption spectrum where most peaks decrease approximately with time in proportion to each other.…”

Section: Discussionmentioning

confidence: 91%

Isolation, screening and molecular identification of novel bacterial strain removing methylene blue from water solutions

Kilany

2017

Appl Water Sci

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The potentially deleterious effects of methylene blue (MB) on human health drove the interest in its removal promptly. Bioremediation is an effective and eco friendly for removing MB. Soil bacteria were isolated and examined for their potential to remove MB. The most potent bacterial candidate was characterized and identified using 16S rRNA sequence technique. The evolutionary history of the isolate was conducted by maximum likelihood method. Some physiochemical parameters were optimized for maximum decolorization. Decolorization mechanism and microbial toxicity study of MB (100 mg/l) and by-products were investigated. Participation of heat killed bacteria in color adsorption have been investigated too. The bacterial isolate was identified as Stenotrophomonas maltophilia strain Kilany_MB 16S ribosomal RNA gene with 99% sequence similarity. The sequence was submitted to NCBI (Accession number = KU533726). Phylogeny depicted the phylogenetic relationships between 16S ribosomal RNA gene, partial sequence (1442 bp), of the isolated strain and other strains related to Stenotrophomonas maltophilia in the GenBank database. The optimal conditions were investigated to be pH 5 at 30°C, after 24 h using 5 mg/l MB showing optimum decolorization percentage (61.3%). Microbial toxicity study demonstrated relative reduction in the toxicity of MB decolorized products on test bacteria. Mechanism of color removal was proved by both biosorption and biodegradation, where heat-killed and live cells showed 43 and 52% of decolorization, respectively, as a maximum value after 24-h incubation. It was demonstrated that the mechanism of color removal is by adsorption. Therefore, good performance of S maltophilia in MB color removal reinforces the exploitation of these bacteria in environmental clean-up and restoration of the ecosystem.

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“…Decolorization of dyes may take place by adsorption [11] or degradation [24]. In the case of adsorption, dyes are only adsorbed onto the surface of bacterial cells, whereas new compounds come into being when dyes are degraded by bacterial enzymes during the degradation process.…”

Section: Decolorization Mode Of Enterobacter Ec3 On Reactive Blackmentioning

confidence: 99%

Biological decolorization of the reactive dyes Reactive Black 5 by a novel isolated bacterial strain Enterobacter sp. EC3

Wang

Zheng

et al. 2009

Journal of Hazardous Materials

156

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Decolorisation and detoxification of Direct Blue-15 by a bacterial consortium

Cited by 64 publications

References 9 publications

Aerobic decolourization of two reactive azo dyes under varying carbon and nitrogen source by Bacillus cereus

Aerobic decolourization of two reactive azo dyes under varying carbon and nitrogen source by Bacillus cereus

Isolation, screening and molecular identification of novel bacterial strain removing methylene blue from water solutions

Biological decolorization of the reactive dyes Reactive Black 5 by a novel isolated bacterial strain Enterobacter sp. EC3

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