Degradation of Carbazole by Microbial Cells Immobilized in Magnetic Gellan Gum Gel Beads

Wang, Xia; Gai, Zhonghui; Yu, Bo; Feng, Jinhui; Chen, Xu; Yuan, Yong; Lin, Zhixin; Xu, Ping

doi:10.1128/aem.01051-07

Cited by 95 publications

(54 citation statements)

References 46 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Recently, Santos et al (12) emphasized the stimulation of anthracene biodegradation and surfactant production with other Pseudomonas strains by the addition of different forms of soluble iron. Also, the biodegradation of carbazole by a Sphingomonas strain immobilized in gellan gum gel beads containing magnetite was reported (16). In our group, we have clearly shown an increase of Rhodococcus rhodochrous biodegradation activity of ABT by FeNTA (5).…”

Section: Vol 74 2008supporting

confidence: 57%

Fate of the Nitrilotriacetic Acid-Fe(III) Complex during Photodegradation and Biodegradation by Rhodococcus rhodochrous

Bunescu

Besse-Hoggan

Sancelme

et al. 2008

Appl Environ Microbiol

View full text Add to dashboard Cite

Aminopolycarboxylic acids are ubiquitous in natural waters and wastewaters. They have the ability to form very stable water-soluble complexes with many metallic di-or trivalent ions. The iron complex nitrilotriacetic acid-Fe(III) (FeNTA) has been previously shown to increase drastically the rate of photo-and biodegradation of 2-aminobenzothiazole, an organic pollutant, by Rhodococcus rhodochrous. For this paper, the fate of FeNTA was investigated during these degradation processes. First, it was shown, using in situ 1 H nuclear magnetic resonance, that the complex FeNTA was biodegraded by Rhodococcus rhodochrous cells, but the ligand (NTA) alone was not. This result indicates that FeNTA was transported and biotransformed inside the cell. The same products, including iminodiacetic acid, glycine, and formate, were obtained during the photo-and biodegradation processes of FeNTA, likely because they both involve oxidoreduction mechanisms. When the results of the different experiments are compared, the soluble iron, measured by spectrophotometry, was decreasing when microbial cells were present. About 20% of the initial iron was found inside the cells. These results allowed us to propose detailed mechanistic schemes for FeNTA degradation by solar light and by R. rhodochrous.

show abstract

Section: Vol 74 2008supporting

confidence: 57%

Fate of the Nitrilotriacetic Acid-Fe(III) Complex during Photodegradation and Biodegradation by Rhodococcus rhodochrous

Bunescu

Besse-Hoggan

Sancelme

et al. 2008

Appl Environ Microbiol

View full text Add to dashboard Cite

show abstract

“…the second model structure from luedeking and Piret (15) is based on the logistic equation for biomass growth rate and ludeking-Piret equation that implies product and substrate dynamics linear dependence on the biomass concentration and biomass growth rate as follows: (2) here μ m , β, q p0 , K, δ and γ are model parameters. In both cases the parametric identification of the models was carried out in MAtlAB environment with optimization toolbox functions for model parameters identification using the least squares error minimization method and the explicit Runge-Kutta formula of 4-5 order for solving the differential equation Systems 1 and with direct analytical integration of the equation in System 2 using the methodics presented by Wang et al (23).…”

Section: Mathematical Modelsmentioning

confidence: 99%

Modeling of Batch Alcohol Fermentation with Free and Immobilized YeastsSaccharomyces Cerevisiae46 EVD

Kostov

Popova

Gochev

et al. 2012

Biotechnology & Biotechnological Equipment

View full text Add to dashboard Cite

“…Del sobrenadante se midió su absorbancia por espectrofotometría y se calculó el porcentaje de colorante removido, reemplazando los valores correspondientes en la ecuación 1 (24,25): bio-test that recorded a higher decoloration percentage.…”

Section: Materiales Y Métodosunclassified

“…From the overfloating liquid, absorbance was measured by spectrophotometry and calculated the rate of colorific removed, replacing values in equation 1 (24,25):…”

Section: Materiales Y Métodosmentioning

confidence: 99%

Decoloración de aguas residuales de una industria de pinturas por la microalga Chlorella sp

et al. 2017

Rev MVZ Córdoba

View full text Add to dashboard Cite

Objective. Decoloring wastewater from a paint factory making use of Chlorella sp., microalgae as a biological way of treatment. Materials and methods. Samples of this microalgae previously cultivated with nourishing fertilizer under photoperiods of light and darkness were taken to test the microalgae Chlorella sp., initial concentration effect in the bioremoval process. For this purpose, it was cultivated in 0.10, 0.20 and 0.30 units of absorbance in bioreactors with 200 mL wastewater with and without nutrients. The biotest with the best rate of colour removal was chosen and the DBO5 and DQO were marked out. The immobilized Chlorella sp., in kappa carrageenan was also tested. Results. In the tests colour decrease percentage were 81.7, 69.7 and 58.3% without nutrients in the initial concentrations of 0.10, 0.20 and 0.30 units of absorbance respectively and 72.6, 69.0 and 86.8% for 0.10, 0.20 and 0.30 units of absorbance with nutrients respectively in the day of maximum growth. The immobilized microalgae score were 72.60% and 78.36% of color removal for 0.4 and 1.6 units of absorbance respectively. The higher colour removal test score was that with nutrients at 0.30 units of absorbance with several changes in DBO5 and DQO values. Conclusion. The biological wastewater treatment making use of Chlorella sp., microalgae can be considered as an effective choice in decolorating wastewater.

show abstract

Degradation of Carbazole by Microbial Cells Immobilized in Magnetic Gellan Gum Gel Beads

Cited by 95 publications

References 46 publications

Fate of the Nitrilotriacetic Acid-Fe(III) Complex during Photodegradation and Biodegradation by Rhodococcus rhodochrous

Fate of the Nitrilotriacetic Acid-Fe(III) Complex during Photodegradation and Biodegradation by Rhodococcus rhodochrous

Modeling of Batch Alcohol Fermentation with Free and Immobilized YeastsSaccharomyces Cerevisiae46 EVD

Decoloración de aguas residuales de una industria de pinturas por la microalga Chlorella sp

Contact Info

Product

Resources

About