Response surface methodology for decolorization of azo dye Methyl Orange by bacterial consortium: Produced enzymes and metabolites characterization

Ayed, Lamia; Khelifi, Eltaief; Jannet, Hichem Ben; Miladi, Hanene; Cheref, Abdelkarim; Achour, Sami; Bakhrouf, Amina

doi:10.1016/j.cej.2010.09.018

Cited by 128 publications

(56 citation statements)

References 37 publications

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“…Mixed fungalbacterial consortia were also described for azo dye biodegradation (Lade et al 2012). Moreover, several previous studies reported microbial biodecolorization of methyl orange by bacteria (Ayed et al 2010;Shah et al 2013a;Tantiwa et al 2013;Radhakrishin and Saraswati 2015) and fungi (Seyis and Subasioglu 2008;Gopalakrishnan and Sellappa 2011;Selvam and Shanmuga Priya 2012).…”

Section: Introductionmentioning

confidence: 94%

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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: Introductionmentioning

confidence: 94%

“…It was applied in many literature reviews to enhance biotechnological process efficiency (Urum et al 2003;Mnif et al 2013). Biodecolorization and methyl orange biodegradation efficiencies were assessed by evaluating the phytotoxicity of the treated dye (Ayed et al 2010).…”

Section: Decolorization Optimizationmentioning

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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“…It gives clear indication that toxicity of dye was reduced after its treatment with P. aeruginosa BCH. Such phytotoxicity studies have been applied successfully to evaluate the toxicity of other azo dye (Ayed et al 2010(Ayed et al , 2011Dhanve et al 2008;Patil et al 2008). In our study also, RmO dye was found to affect the overall growth of the tested plants.…”

Section: Phytotoxicity Studiesmentioning

confidence: 99%

Response surface methodology mediated optimization of Remazol Orange decolorization in plain distilled water by Pseudomonas aeruginosa BCH

Jadhav

Surwase

Phugare

et al. 2012

Int. J. Environ. Sci. Technol.

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The bacterium Pseudomonas aeruginosa BCH decolorized and degraded the sulphonated azo dye Remazol Orange in plain distilled water. The effects of different parameters, i.e. pH, temperature and cell mass concentration on the biodegradation of dye in aqueous phase was evaluated using response surface methodology. Optimization was carried out using three-level BoxBehnken design. Predicted values were found to be in good agreement with experimental values (R 2 0.9997 and pred R 2 0.9984), which indicated suitability of the employed model and the success of response surface methodology. Optimum dye decolorization was maximized and the favourable conditions were pH 7.43, temperature 29.39°C and cell mass concentration 2.88 g l -1 , which resulted in 96.01 % decolorization within 5 h. It was validated from the predicted response (97.37 %). According to the analysis of variance results, the proposed model can be used to navigate the design space. 3D plot analysis disclosed the significant interaction between all three tested factors on decolorization process. The combinations of the three variables predicted during response surface methodology were confirmed through confirmatory experiments. Observations indicated that higher cell mass accelerated the decolorization process. Degradation of the dye was verified through high performance liquid chromatography analysis. Phytotoxicity studies carried out with dye and dye metabolites using Phaseolus mungo, Triticum aestivum and Sorghum vulgare indicated the detoxification of dye.

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“…Although the previous results obtained in this work suggest a promising acidic carbon preparation from the biodiesel waste, a multivariate study will be done, as suggested in other studies related in the literature by several authors [35,36]. In future work, we intend to study the optimization of several variables such as reaction temperature, % catalyst, TBA:glycerol molar ratio, stirring and kinetics for all catalyst, in order to take into account all the relevant variables and their interactions.…”

Section: Catalytic Activity In the Etherification Of Glycerolmentioning

confidence: 99%

Biodiesel wastes: An abundant and promising source for the preparation of acidic catalysts for utilization in etherification reaction

Gonçalves

Mantovani

Carvalho

et al. 2014

Chemical Engineering Journal

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Environmentally friendly sulfonated black carbon (BC) catalysts were prepared from biodiesel waste, glycerol. These black carbons (BCs) contain a high amount of acidic groups, mainly sulfonated and oxygenated groups. Furthermore, these catalysts show a high catalytic activity in the glycerol etherification reaction with tertbutyl alcohol, the activity being larger for the sample prepared with a higher glycerol:sulfuric acid ratio (1:3). The yield for mono-tert-butyl glycerol (MTBG), ditert-butyl glycerol (DTBG) and tri-tert-butyl-glycerol (TTBG) were very similar to those obtained using a commercial resin, Amberlyst-15. Furthermore, experimental results show that the carbon with the lowest acidic surface group content, BC prepared in minor glycerol:sulfuric acid ratio (10:1), can be chemically treated after carbonization to achieve an improved catalytic activity. The activity of all BCs is high and very similar, about 50% and 20% for the MTBG and DTBG + TTBG, respectively.

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Response surface methodology for decolorization of azo dye Methyl Orange by bacterial consortium: Produced enzymes and metabolites characterization

Cited by 128 publications

References 37 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

Response surface methodology mediated optimization of Remazol Orange decolorization in plain distilled water by Pseudomonas aeruginosa BCH

Biodiesel wastes: An abundant and promising source for the preparation of acidic catalysts for utilization in etherification reaction

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