Bioremoval of chemically different synthetic dyes by Aeromonas hydrophila in simulated wastewater containing dyeing auxiliaries

Ogugbue, Chimezie Jason; Sawidis, Thomas; Oranusi, NA

doi:10.1007/s13213-011-0354-y

Cited by 34 publications

(14 citation statements)

References 58 publications

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“…Regarding previous studies, Aeromonas sp. was described to decolorize azo, triphenyl methane, and azine dyes (Hayasen et al 2000;Ren et al 2006;Joshi et al 2008;Hsueh et al 2009;Ogugbue et al 2012). To our knowledge, this is the first work reporting the use of Aeromonas veronii to decolorize orange methyl dye.…”

Section: Methodsmentioning

confidence: 94%

“…It is well recognized that it promotes bacterial growth and metabolites and enzyme production. Carbon sources were also discussed to enhance the biodecolorization process efficiency (Ogugbue et al 2012;Shah et al 2013b, c). Initial inoculum density was selected as operating parameter since it could have great effect on the bacteria growth and on enzyme and metabolite production (Mnif et al 2012a, b).…”

Section: Mechanism Of Microbial Decolorizationmentioning

confidence: 99%

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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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Section: Methodsmentioning

confidence: 94%

Section: Mechanism Of Microbial Decolorizationmentioning

confidence: 99%

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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“…However, the use of bacterial cultures is preferable since they exhibit a rapid growth rate and require shorter hydraulic retention time for dye decolorization. Previous reports indicated that bacterial strains like Bacillus firmus (Ogugbue et al 2012a ), Aeromonas hydrophila (Ogugbue et al 2012b ), Klebsiella sp. strain VN-31 (Franciscon et al 2009 ), Sphingomonas sp.…”

Section: Introductionmentioning

confidence: 99%

Application of response surface methodology for optimization of decolorization and mineralization of triazo dye Direct Blue 71 by Pseudomonas aeruginosa

2013

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The decolorization and degradation of Direct Blue 71 were investigated using a mono culture of Pseudomonas aeruginosa. The bacterium was able to decolorize the dye medium to 70.43 % within 48 h under microaerophilic conditions. The medium was then aerated for 24 h to promote the biodegradation of the aromatic amines generated from azo bond cleavage. Reduction in total organic carbon in dye medium was 42.58 % in the microaerophilic stage and 78.39 % in the aerobic stage. The degradation metabolites formed were studied using UV–vis techniques, high performance liquid chromatography, Fourier transform infra red spectroscopy and nuclear magnetic resonance spectroscopy analysis. Data obtained provide evidence for the formation of aromatic amines and their subsequent oxidative biodegradation by a single strain of P. aeruginosa during successive microaerophilic/aerobic stages in the same flask. The influence of incubation temperature (20–45 °C), medium pH (5–10) and initial dye concentration (25–150 mg/L) on decolorization was evaluated to greatly influence decolorization extent. The optimal decolorization conditions were determined by response surface methodology based on three-variable central composite design to obtain maximum decolorization and to determine the significance and interaction effect of the variables on decolorization. The optimal conditions of response were found to be 35.15 °C, pH 8.01 and 49.95 mg/L dye concentration giving an experimental decolorization value of 84.80 %. Very high regression coefficient between the variables and the response (R2 = 0.9624) indicated a good evaluation of experimental data by polynomial regression model.

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“…However, cell growth was poor under static condition as compared to shaking condition. Reports indicate that oxygen is deleterious to the activity of enzyme (azoreductase) which is responsible for azo bond reduction, where as oxygen favors bacterial growth under shaking condition (Ogugbue et al, 2012).…”

Section: Decolorization Under Different Culture Conditionsmentioning

confidence: 99%

Effective Decolourization of Textile Azo Dyes by a Novel Bacterial Isolate Lysinibacillus SI 01 through Sequential Aerobic - Microaerophilic Process

Muruganantham¹,

Kumar²

2016

Int.J.Curr.Microbiol.App.Sci

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Bioremoval of chemically different synthetic dyes by Aeromonas hydrophila in simulated wastewater containing dyeing auxiliaries

Cited by 34 publications

References 58 publications

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

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

Application of response surface methodology for optimization of decolorization and mineralization of triazo dye Direct Blue 71 by Pseudomonas aeruginosa

Effective Decolourization of Textile Azo Dyes by a Novel Bacterial Isolate Lysinibacillus SI 01 through Sequential Aerobic - Microaerophilic Process

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