Selection of bacterial strains efficient in decolourisation of Remazol Black-B

Shah, MP; Patel, Kavita A; Nair, SS; Darji, A M

doi:10.13172/2052-0069-2-2-551

Cited by 4 publications

(5 citation statements)

References 16 publications

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“…The pH value of the medium affect degradation of the dye and maximum decolorization percentage was reported at pH 6.5 but this dye degradation percentage reduced at pH 6 and 7 and the lowest percentages were at pH 4, 5 and 8 (Figure 6). Findings of present study are in agreement with the findings of Chang et al (2001) and Shah et al (2013). Similarly, Aburas (2016) isolated P. putida from waste water sample and reported highest ability of PHB production.…”

Section: Resultssupporting

confidence: 91%

“…Zhang et al (2010) detected the presence of Klebsiella pneumoniae, Aeromonas hydrophila, Enterobacter cancerogenus, Proteus hauseri and Acinetobacter johnsonii as decolorizers in dye-bearing wastewater from Taiwan. Similarly, Shah et al (2013) isolated different bacterial isolates having azo dye degrading capability from textile industry wastewater sample. Like this, Hussain et al (2013) isolated a dye degrading bacterial strain from a textile industry wastewater of Faisalabad, Pakistan in liquid mineral salts medium.…”

Section: Introductionmentioning

confidence: 99%

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BIODEGRADATION OF THE AZO DYE (REMAZOL BLACK B) BY Pseudomonas putida ISOLATED FROM TEXTILE WASTEWATER SAMPLE

Arabia¹

2019

JEBAS

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The synthetic aromatic compounds, Azo dyes, which have one or more -N=Ngroups, are the most important and largest class of the used dyes with commercial applications especially in food and textile industries. The cleaning of textile wastewater containing dyes has attracted much attention in the recent years. The present study is an attempt to determine the ability of some bacterial isolates obtained from textile wastewater sample from Al Khumra station for decolorization of the Azo dye, Remazol black B. Three bacterial isolates were isolated from wastewater of textile effluents containing azo dye on basal nutrient medium. These isolated bacterial isolates were identified as Bacillus cereus, B. pumilus and Pseudomonas putida by phylogenetic analysis of their 16S rDNA. The most promising bacterial isolate was Pseudomonas putida and was used for further study. Results of study revealed that P. putida have ability of complete biodegradation (100%), if concentration is at 400 ppm while this degradation was 60 and 30 percent at 600 and 700 ppm concentration of azo dye respectively. Further, rate of biodegradation also depend on the pH and temperature of the surrounding medium, at 400 ppm concentration of azo dye, maximum degradation was obtained at pH 6.5 and temperature 40°C. This decolorization potential increased the applicability of this bacterium for the dye removal and the results suggest that the obtained isolate of P. putida can be used as a useful tool to treat waste water containing Azo dyes. Degradation potential of the bacterium depend on the presence of azoreductases, laccases and peroxidases enzymes.

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Section: Resultssupporting

confidence: 91%

Section: Introductionmentioning

confidence: 99%

BIODEGRADATION OF THE AZO DYE (REMAZOL BLACK B) BY Pseudomonas putida ISOLATED FROM TEXTILE WASTEWATER SAMPLE

Arabia¹

2019

JEBAS

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“…However, Bacillus spp. showed optimum decolorization of Remazol Black-B from pH 5 to 7 (Shah et al 2013b). Adedayo et al (2004) showed an inhibition of methyl red decolorization by Vibrio species at basic pH values.…”

Section: Effect Of Ph On Decolorization Efficiencymentioning

confidence: 95%

Improvement of methyl orange dye biotreatment by a novel isolated strain, Aeromonas veronii GRI, by SPB1 biosurfactant addition

Mnif

Maktouf

Fendri

et al. 2015

Environ Sci Pollut Res

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Aeromonas veronii GRI (KF964486), isolated from acclimated textile effluent after selective enrichment on azo dye, was assessed for methyl orange biodegradation potency. Results suggested the potential of this bacterium for use in effective treatment of azo-dye-contaminated wastewaters under static conditions at neutral and alkaline pH value, characteristic of typical textile effluents. The strain could tolerate higher doses of dyes as it was able to decolorize up to 1000 mg/l. When used as microbial surfactant to enhance methyl orange biodecolorization, Bacillus subtilis SPB1-derived lipopeptide accelerated the decolorization rate and maximized slightly the decolorization efficiency at an optimal concentration of about 0.025%. In order to enhance the process efficiency, a Taguchi design was conducted. Phytotoxicity bioassay using sesame and radish seeds were carried out to assess the biotreatment effectiveness. The bacterium was able to effectively decolorize the azo dye when inoculated with an initial optical density of about 0.5 with 0.25% sucrose, 0.125% yeast extract, 0.01% SPB1 biosurfactant, and when conducting an agitation phase of about 24 h after static incubation. Germination potency showed an increase toward the nonoptimized conditions indicating an improvement of the biotreatment. When comparing with synthetic surfactants, a drastic decrease and an inhibition of orange methyl decolorization were observed in the presence of CTAB and SDS. The nonionic surfactant Tween 80 had a positive effect on methyl orange biodecolorization. Also, studies ensured that methyl orange removal by this strain could be due to endocellular enzymatic activities. To conclude, the addition of SPB1 bioemulsifier reduced energy costs by reducing effective decolorization period, biosurfactant stimulated bacterial decolorization method may provide highly efficient, inexpensive, and time-saving procedure in treatment of textile effluents.

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“…Pure bacteria were inoculated (10% v/v) into Chemically Synthetic MgSO 4 .7H 2 O (0.1), CaCl 2 (0.02), (NH 4 ) 2 SO 4 , (1), Glycerol (1), and Reactive Red dye (0.1), adjusted to pH 7 prior to sterilization. Bacteria were grown under facultative anaerobic conditions (1:1 ratio of medium to the total volume of container) for 24 h at 37°C, prior to monitor the decolorization activity.…”

Section: Screening Of Bacteria For Color Removalmentioning

confidence: 99%

“…Azo dyes have been used increasingly in industries because of their ease and cost effectiveness in synthesis compared to natural dyes. However, most azo dyes are toxic, carcinogenic and mutagenic [4]. Environmental pollution has been recognized as one of the major hazard of the modern world.…”

Section: Introductionmentioning

confidence: 99%

Microbial Degradation of Reactive Red by Pseudomonas spp. MPS-2

Darji¹

2013

J Bioremed Biodeg

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Azo dyes are a widespread class of poorly biodegradable industrial pollutants. In anaerobic environments, azo bonds are reductively cleaved yielding carcinogenic aromatic amines, many of which are assumed to resist further metabolism by anaerobes bacteria. The latter compounds generally require aerobic conditions for their degradation. A reactive group of azo dye called C.I: Reactive Red was found to be degraded using pseudomonas spp. MPS-79 to α-ketoglutaric acid with transient accumulation of 4-aminobenzenesulphonic acid (sulphanilic acid), 4-amino, 3-hydronapthalenesulphonic acid and 4-amino, 5-hydronapthalene 2,7 disulphonic acid as a degradation intermediate in anaerobic facultative batch culture. Colour and Total Organic Carbon (TOC) was successfully removed more than 95% and up to 50% respectively. There is no significant correlation between pH and oxygen depletion since there is slightly change in pH was observed (pH from 7.21 to 7.25) though the anaerobiosis was found developed throughout the experiment (redox potential from 0.7 to 1.6 mV). The anaerobic metabolism of glucose as co-metabolite also shown to provide the electrons required for the initial reductive cleavage of the azo group. This finding suggest that it is possible to mineralize the azo dye in the environment; thereby, avoiding accumulation of toxic intermediates in the water. Journal of Bior emediation & Biodegradation

show abstract

Selection of bacterial strains efficient in decolourisation of Remazol Black-B

Cited by 4 publications

References 16 publications

BIODEGRADATION OF THE AZO DYE (REMAZOL BLACK B) BY Pseudomonas putida ISOLATED FROM TEXTILE WASTEWATER SAMPLE

BIODEGRADATION OF THE AZO DYE (REMAZOL BLACK B) BY Pseudomonas putida ISOLATED FROM TEXTILE WASTEWATER SAMPLE

Improvement of methyl orange dye biotreatment by a novel isolated strain, Aeromonas veronii GRI, by SPB1 biosurfactant addition

Microbial Degradation of Reactive Red by Pseudomonas spp. MPS-2

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