Cometabolic degradation kinetics of TCE and phenol by Pseudomonas putida

Chen, Yan Min; Lin, Tsair Fuh; Huang, Chih Hsuan; Lin, Jui Che

doi:10.1016/j.chemosphere.2008.05.035

Cited by 46 publications

(13 citation statements)

References 34 publications

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“…A few mathematical models of mixed homologous substrate consumption and microbial growth have been proposed. it has been found that a competitive inhibition model could be used to predict the co-metabolic growth rate of Pseudomonas species on mixed toxic substrates (2). the exponential inhibition model gives the best fit for a Flavobacterium's species co-metabolizing pentachlorophenol, dichlorophenol and trichlorophenol (3).…”

Section: Introductionmentioning

confidence: 99%

Comparison of the Biodegradation Capacity of Two Fungal Strains Toward a Mixture of Phenol and Cresol by Mathematical Modeling

Yemendzhiev

Златева

Alexieva

2012

Biotechnology & Biotechnological Equipment

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Section: Introductionmentioning

confidence: 99%

Comparison of the Biodegradation Capacity of Two Fungal Strains Toward a Mixture of Phenol and Cresol by Mathematical Modeling

Yemendzhiev

Златева

Alexieva

2012

Biotechnology & Biotechnological Equipment

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“…The specific degradation rate of the growth substrate (q Sg ) and non-growth substrate (q Sng ) can be expressed as follows by assuming steady state approach for the formation of the enzyme-substrate complexes [14]:…”

Section: Resultsmentioning

confidence: 99%

“…This co-existence of the pollutants with each other has raised questions about probable interactions between these substances, which could affect the microbial activities in degrading the compound of interest [10][11][12][13]. Experimental results reported in the literature on the time history of growth and substrate consumption by the pure and mixed microbial culture, show applicability of several mathematical models in describing the growth kinetics [3,[10][11][12][13][14]. However, in many cases the higher initial substrate concentrations exhibit the growth inhibitory effect which mechanistically is characterized based on a single catalytic reaction for a single substrate.…”

mentioning

confidence: 98%

“…The transformation of a substrate in presence of the other substrate known as the co-metabolism is a complex phenomena in microbial world and relationships between substrates should be quantitatively defined in a way that describing the microorganism's behavior towards each substrate become possible. Enzymatic reaction kinetics as the theoretical basis of the co-metabolisms modeling has been extensively experimented by Chang et al [11], Ely et al [12,13], and Chen et al [14]. The highlights of the mechanism involved in the kinetics are: (1) participation of the same enzyme in the degradation of growth and non-growth substrates, (2) presence competitive inhibition between growth and non-growth substrates in response to the enzyme of the interest, (3) role of non-growth substrate along with the growth substrate in the development of equation(s), (4) absence of the inhibitory effect of growth substrate on the enzyme considering in the range of growth substrate initial concentrations used in the degradation experiments, (5) exertion of inhibitory effect on the enzyme by the non-growth substrate.…”

mentioning

confidence: 99%

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Experimental Investigation and Kinetic Modeling of p‐Nitrophenol and Phenol by Kissiris‐Immobilized Ralstonia eutropha in a Batch Reactor

Motamedi

Habibi

Maleki

et al. 2014

CLEAN Soil Air Water

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Experimental Investigation and Kinetic Modeling of p-Nitrophenol and Phenol by Kissiris-Immobilized Ralstonia eutropha in a Batch ReactorCo-metabolic degradation of p-nitrophenol (PNP) and phenol by kissiris-immobilized Ralstonia eutropha cells was studied in a batch bioreactor operated in recycling mode (30°C, initial pH of 7.7, aeration rate of 0.5 vvm, and recycling flow rate of 25 mL min À1). Decreasing trends of specific degradation rates of phenol (q Sg ) and PNP (q Sng ) with an increase of initial PNP concentration, were mathematically modeled considering the competitive inhibition between growth and non-growth substrates and self-inhibition of non-growth substrate. A non-linear regression on the equations used in defining of q Sg , and q Sng , was used to estimate the relevant kinetic parameters. On the best fitted curve, the kinetic parameters were q max Sg ¼ 0.032, and. These parameters were used for dynamic prediction of the substrates concentration feature during co-metabolic degradation experiments.

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“…A few mathematical models of mixed homologous substrate consumption and microbial growth have been proposed. It has been found that a competitive inhibition models could be used to predict the co-metabolic growth rate of Pseudomonas species on mixed toxic substrates (Chen et al 2008). Completely empirical, exponential inhibition model has given the best fit for a Flavobacterium's species co-metabolizing pentachlorophenol, dichlorophenol and trichlorophenol (Gu and Korus 1995).…”

Section: Introductionmentioning

confidence: 99%

Cresols utilization by Trametes versicolor and substrate interactions in the mixture with phenol

2010

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The ability of the white rot fungus Trametes versicolor strain 1 to degrade and utilize methylated phenols (cresols) was established for the first time in a medium not containing any other carbon components. The data obtained demonstrated the better potential of the strain to assimilate p-cresol instead of o- or m- cresol. The 0.5 g/l p-cresol provided was degraded in full after 96 h. The effect of a dual substrate mixture (0.3 g/l phenol + 0.2 g/l p-cresol) on the growth behavior and degradation capacity of the investigated strain was examined. The cell-free supernatants were analyzed by HPLC. It was established that the presence of p-cresol had not prevented complete phenol degradation but had a significant delaying effect on the phenol degradation dynamics. Phenol hydroxylase, catechol 1.2-dioxygenase and cis,cis-muconate cyclase activities were obtained in conditions of single and mixed substrates cultivation. The influence of different phenolic substrates on phenol hydroxylase activity in Trametes versicolor 1 was established. The mathematical models describing the dynamics of single substrates' utilization as well as the mutual influence of phenol and p-cresol in the mixture were developed on the bases of Haldane kinetics. The estimated interaction coefficients (I(ph/cr) = 4.72, I(cr/ph) = 7.46) demonstrated the significant inhibition of p-cresol on phenol biodegradation and comparatively low level of influence of phenol presence on the p-cresol degradation. Molecular 18S RNA gene taxonomy of the investigated strain was performed.

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Cometabolic degradation kinetics of TCE and phenol by Pseudomonas putida

Cited by 46 publications

References 34 publications

Comparison of the Biodegradation Capacity of Two Fungal Strains Toward a Mixture of Phenol and Cresol by Mathematical Modeling

Comparison of the Biodegradation Capacity of Two Fungal Strains Toward a Mixture of Phenol and Cresol by Mathematical Modeling

Experimental Investigation and Kinetic Modeling of p‐Nitrophenol and Phenol by Kissiris‐Immobilized Ralstonia eutropha in a Batch Reactor

Cresols utilization by Trametes versicolor and substrate interactions in the mixture with phenol

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