Biodegradation of Azo Dyes by Three Isolated Bacterial Strains: An Environmental Bioremedial Approach

Shah, Maulin P.

doi:10.4172/1948-5948.s3-007

Cited by 17 publications

(18 citation statements)

References 46 publications

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“…Shah (2014) reported three bacteria namely Pseudomonas putida, P. aeruginosa and B. subtilis capable of degrading multiple dyes i.e., Blue RR, Black B, Red RR, Yellow RR and Navy blue. P. putida showed maximum decolorization of Blue RR (95%), P. aeruginosa of Black B (93%) and Navy blue (70.58%) and B. subtilis of Yellow RR (65%) and Red RR (91%).…”

Section: Discussionmentioning

confidence: 99%

Degradation of azo dyes by Alcaligenes aquatilis 3c and its potential use in the wastewater treatment

et al. 2019

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In the present study, Alcaligenes aquatilis was found to decolorize 82% Synazol red 6HBN after incubation of 4 days at 37 °C and pH 7. Maximum decolorization was found under static conditions by using saw dust and yeast extract as carbon and nitrogen source. It also showed promising potential to decolorize mixture of multiple dyes at a rate of more than 86% in 5 days. Decolorization of dye had positive influence on the growth of bacterium as growth rate was increased along with decolorization. The cleavage of azo bond was confirmed through TLC, HPLC and GC–MS analysis. The dye metabolites produced during bacterial treatment are linked to various pathways including ATP synthesis process. The absence of peaks of wavelength 1612/cm and 1532/cm in bacterially treated FTIR sample demonstrated the cleavage of azo bond. Microbial growth in decolorized dye wastewater shows that bacterially decolorized wastewater is unharmful for the growth of micro-flora. The high decolorization ability of A. aquatilis 3c to convert toxic azo dyes into useful end products may find potential applications in the environmental biotechnology. Electronic supplementary material The online version of this article (10.1186/s13568-019-0788-3) contains supplementary material, which is available to authorized users.

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Section: Discussionmentioning

confidence: 99%

Degradation of azo dyes by Alcaligenes aquatilis 3c and its potential use in the wastewater treatment

et al. 2019

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“…Decolorization activity was judged by the presence of clear zones surrounding the colonies and comparing the inoculated plates with the control plates. After incubation, morphologically distinct bacterial isolates showing clear zones was selected for further screening (Shah, 2014).…”

Section: Screening Of Bacterial Isolates Based On Degradation Activitymentioning

confidence: 99%

Biodegradation potential of bacterial isolates from dye wastewater at Marina, Sokoto metropolis

Adegbite¹,

Ibrahim²,

Yusif³

2020

Nig. J. Biotechnol

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This study was carried out to determine the biodegradation potential of bacterial isolates from dye wastewater at Marina Area, Sokoto. Three (3) of the bacteria were identified; Bacillus subtilis, Luteimonasaestuarrii and Bacillus cereus and were used for further studies based on their degradation ability of green, red, yellow and blue dyes. Bacillus subtilis, Luteimonas aestuarii and Bacillus cereus have the potential to degrade all the four dyes used during the present investigation. However, efficacy of the various bacterial strains was found to vary at different concentration levels in degradation of a particular dye. Thus, by this study it can be concluded that Bacillus cereus, Bacillus subtilis and Luteimonas aestuarii can be used as a good microbial source for dye waste water treatment. The selected bacterial species represent a promising tool for application in biodegradation of dye waste water and the potential observed would allow for the application of the bacterial isolates for treatment of dye effluents before disposal. Keywords: effluents, isolates, biodegradation, dye and bacterial.

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“…Biodegradation of azo dyes produces intermediate products such as aromatic amines, which vary in their resistance to biodegradation and can be mutagenic and carcinogenic. These intermediate compounds can limit the degrading bacterial growth and activity such that the treatment process becomes incompetent and unfeasible [8,9]. In a microbial consortium, the individual strains may attack the dye molecule at different positions.…”

Section: Introductionmentioning

confidence: 99%

“…Advanced technologies such as membrane ltration, electrokinetic coagulation, occulation, froth otation, ion exchange, membrane ltration, ozonation, Fenton oxidation, and reverse osmosis are also used for the decolorization of dyes in wastewater [2,7]. However, it is still challenging to treat the e uents using these conventional methods mainly because of high chemical oxygen demand, intense color, pH, and the excess amount of suspended solids, salts, sul des, chlorine, and heavy metals [8,9]. Moreover, the physical and chemical methods have the disadvantages of being highly expensive, coupled with the formation of a large amount of sludge and the emission of toxic substances [5,10].…”

Section: Introductionmentioning

confidence: 99%

Biodecolorization of Azo Dye Mixture (Remazol Brilliant Violet 5r and Reactive Red 120) by Indigenous Bacterial Consortium Obtained From Dye Contaminated Soil

Rajendran¹,

Kiruthika²,

Saranya³

et al. 2021

Preprint

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Discharge of the untreated wastewater containing dyestuff into the surrounding aquatic environment is of significant environmental concern. These dying effluents not only change the color of water bodies but also has many unfavorable conditions and release toxic by-products, which are mutagenic, carcinogenic, and hazardous to different life forms. The present study investigated the biodegradation and removal of dye mixture (Remazol Brilliant violet 5R and Reactive Red 120) using a new bacterial consortium isolated from dye contaminated soil. Among the total 15 isolates screened, the two most efficient bacterial species (SS07 and SS09) were selected and identified as Enterobacter cloacae (MT573884) and Achromobacter pulmonis (MT573885) through biochemical assays and 16S rRNA gene sequencing. The removal efficiency of dye mixture by Enterobacter cloacae and Achromobacter pulmonis at an initial concentration of 100 mg L− 1 was 82.78 and 84.96%, discretely. The bacterial consortium was developed using selected isolates, and the optimum conditions for the removal of dyes were investigated by studying the effects of pH, temperature, carbon and nitrogen sources, dye concentration, and inoculum size. The maximum decolorization efficiency was achieved at pH, 7; temperature, 37°C; dye concentration, 100 ppm; and initial inoculum concentration, 0.5 ml, respectively. Mannitol and Ammonium sulfate was identified as the most suitable carbon and nitrogen sources for better bacterial growth and decolorization. The maximum removal efficiency of 91.3% achieved at the optimal conditions after 72 h of incubation. Decolorization of azo dyestuff by the developed microbial consortia conforms to the zero-order reaction kinetics model. Consortia of Enterobacter cloacae and Achromobacter pulmonis was established as an effective decolorizer for the Remazol Brilliant violet 5R and Reactive Red 120 dye mixture with > 90% color removal.

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Biodegradation of Azo Dyes by Three Isolated Bacterial Strains: An Environmental Bioremedial Approach

Cited by 17 publications

References 46 publications

Degradation of azo dyes by Alcaligenes aquatilis 3c and its potential use in the wastewater treatment

Degradation of azo dyes by Alcaligenes aquatilis 3c and its potential use in the wastewater treatment

Biodegradation potential of bacterial isolates from dye wastewater at Marina, Sokoto metropolis

Biodecolorization of Azo Dye Mixture (Remazol Brilliant Violet 5r and Reactive Red 120) by Indigenous Bacterial Consortium Obtained From Dye Contaminated Soil

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