Removal of Triphenylmethane Dyes by Bacterial Consortium

Cheriaa, Jihane; Khaireddine, Monia; Rouabhia, Mahmoud; Bakhrouf, Amina

doi:10.1100/2012/512454

Cited by 146 publications

(72 citation statements)

References 30 publications

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“…strain DY1, grown in the presence of the dye, has been shown to be a very efficient tool for MG degradation, in concentration ranges from 100 mg/L to 1000 mg/L [35]. MG successful degradation (50 mg/L) by other bacterial species has been also reported [43,44]. However, in none of the cases the enzymes involved in the biodegradation process were identified.…”

Section: Resultsmentioning

confidence: 99%

Biocatalytic potential of laccase-like multicopper oxidases from Aspergillus niger

2012

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BackgroundLaccase-like multicopper oxidases have been reported in several Aspergillus species but they remain uncharacterized. The biocatalytic potential of the Aspergillus niger fungal pigment multicopper oxidases McoA and McoB and ascomycete laccase McoG was investigated.ResultsThe laccase-like multicopper oxidases McoA, McoB and McoG from the commonly used cell factory Aspergillus niger were homologously expressed, purified and analyzed for their biocatalytic potential. All three recombinant enzymes were monomers with apparent molecular masses ranging from 80 to 110 kDa. McoA and McoG resulted to be blue, whereas McoB was yellow. The newly obtained oxidases displayed strongly different activities towards aromatic compounds and synthetic dyes. McoB exhibited high catalytic efficiency with N,N-dimethyl-p-phenylenediamine (DMPPDA) and 2,2-azino-di(3-ethylbenzthiazoline) sulfonic acid (ABTS), and appeared to be a promising biocatalyst. Besides oxidizing a variety of phenolic compounds, McoB catalyzed successfully the decolorization and detoxification of the widely used textile dye malachite green.ConclusionsThe A. niger McoA, McoB, and McoG enzymes showed clearly different catalytic properties. Yellow McoB showed broad substrate specificity, catalyzing the oxidation of several phenolic compounds commonly present in different industrial effluents. It also harbored high decolorization and detoxification activity with the synthetic dye malachite green, showing to have an interesting potential as a new industrial biocatalyst.

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Section: Resultsmentioning

confidence: 99%

Biocatalytic potential of laccase-like multicopper oxidases from Aspergillus niger

2012

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“…The efficacy of R. radiobacter, S. paucimobilis and B. subtilis in decolorization of azo dyes (Cheriaa et al, 2012 andAli et al, 2014) and removal of heavy metals (Xie et al, 2010;Gayathramma et al, 2013 andWang et al, 2013) have been previously reported.…”

Section: Discussionmentioning

confidence: 99%

Bioremediation Efficiency of Heavy Metals and Azo Dyes by Individual or Consortium Bacterial Species Either as Free orImmobilized Cells: A Comparative Study

Allam

2017

Egypt. J. Bot.

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THE OBJECTIVE of the present study was to compare between free and immbolized bacterial cultuer/s in bioremediation of heavy metals and dyes to reduce environmental pollutants with the help of biological entities. The bacterial consortium consisting of Sphingomonas paucimobilis, Rhizobium radiobacter, and Bacillus subtilis was developed due to capabilities of the three bacterial species to remove heavy metals from industrial waste water and decolorize methyl orange and Congo red textile azo dyes than their corresponding single cultures. The immobilization of bacterial consortium on Ca-alginate increased its heavy metals removal efficiency more than 10% compared to consortium of free cells after 4 days. Also, decolorization ability of immobilized consortium was conducted for shorter time and higher concentrations of dyes than that of free one. The greater efficiency of immobilized consortium than free single culture may be correlated to synergistic activity of different metabolites of bacterial cultures and protection of cells from toxic pollutants that provided by Ca-alginate matrices which promoting an efficient bio-treatment of industrial effluents containing dyes and heavy metals.

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“…The vibration bands at 1369, 939, 831 cm -1 reflect -CH 2 scissoring, the -CH 3 asymmetric bend, and an -NH 2 wag motion. 34 The P25 sample gives a vibration band at 400-700 cm -1 generated by Ti-O stretching, and also a Ti-O-Ti bridging mode. The broad bands at 3419 and 1634 cm -1 must be due to the stretching and deformation vibrations of adsorbed water and hydroxyl groups present on the surface of TiO 2 .…”

Section: Ft-ir Spectramentioning

confidence: 99%

Synergetic effect of adsorption on degradation of malachite green dye under blue LED irradiation using spiral-shaped photocatalytic reactor

Park

Tayade

2014

J. Chem. Technol. Biotechnol.

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BACKGROUND The present study focus on the development and feasibility of a blue light emitting diodes (LEDs) source based slurry type spiral‐shaped photocatalytic reactor for degradation of malachite green (MG) dye using P25 Degussa TiO2. The influence of operational parameters such as amount of catalyst loading, initial concentration of dye, and pH of the medium has been studied for optimization of MG dye degradation. RESULTS The photocatalytic degradation of malachite green dye under separate irradiation by blue and by ultraviolet LED was nearly the same (∼76%). The photocatalytic activity using blue LED irradiation was observed due to the synergistic effect of MG dye adsorption on P25 Degussa, which extends the spectral response of TiO2 to the visible region (449 nm). The optimized degradation of 20 mg L‐1 dye was observed at pH 8 using 0.5 g L‐1 of catalyst under irradiation by ultraviolet and blue LEDs for 1 h and 3 h, respectively. CONCLUSION It was found that the synergistic effect of adsorption of malachite green dye on TiO2 surface helped to enhance photocatalytic degradation under blue LED irradiation. The application of a blue LED for photocatalytic degradation of malachite green dye is economical and feasible compared with use of an ultraviolet LED. © 2014 Society of Chemical Industry

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Removal of Triphenylmethane Dyes by Bacterial Consortium

Cited by 146 publications

References 30 publications

Biocatalytic potential of laccase-like multicopper oxidases from Aspergillus niger

Biocatalytic potential of laccase-like multicopper oxidases from Aspergillus niger

Bioremediation Efficiency of Heavy Metals and Azo Dyes by Individual or Consortium Bacterial Species Either as Free orImmobilized Cells: A Comparative Study

Synergetic effect of adsorption on degradation of malachite green dye under blue LED irradiation using spiral-shaped photocatalytic reactor

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