Biodegradation of phenol and cresol isomer mixtures by Arthrobacter
01 Nov 1997-World Journal of Microbiology & Biotechnology (Kluwer Academic Publishers-Plenum Publishers)-Vol. 13, Iss: 6, pp 659-663
TL;DR: The Arthrobacter species can degrade phenol, o-cresol and p-Cresol much faster than other microbes which are reported to degrade toxic compounds.
Abstract: The Arthrobacter species can degrade phenol, o-cresol and p-cresol much faster (as reflected in high specific growth rates) than other microbes which are reported to degrade toxic compounds In mixtures, phenol and p-cresol mutually inhibited each other; the inhibition constants show that phenol degradation is strongly inhibited in the presence of p-cresol rather than reverse o-Cresol enhanced phenol degradation marginally but o-cresol degradation was not affected by the presence of phenol
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TL;DR: The aim of this literature review was to summarise the knowledge of the behaviour, and toxicity on marine and freshwater organisms, of phenols as well as to try to select a series of sensitive biomarkers suitable for ecotoxicological assessment and environmental monitoring in aquatic environments.
152 citations
TL;DR: The results showed that the models proposed adequately described the dynamic behaviors of biodegradation by C. tropicalis, and illustrated that m -cresol biodegrading velocity was higher than that without phenol.
145 citations
01 Jan 2010
TL;DR: In this paper, various sources of phenol, various microorganisms involved in the biodegradation including aerobe and anaerobe, effect of environmental parameters on phenol degradation and kinetic analysis of biodegradability, and various
Abstract: Aromatic compounds are widely distributed in nature and free phenols are frequently liberated as metabolic intermediates during the degradation of plant materials. In recent years the natural supply of phenolic substances has been greatly increased due to the release of industrial byproducts into the environment. Effluents from petrochemical, textile and coal industries contain phenolic compounds in very high concentration; therefore there is a necessity to remove phenolic compounds from the environment. Among various techniques available for removal of phenols, biodegradation is an environment friendly and cost effective method. This paper describes about the various sources of phenol, various microorganisms involved in the biodegradation including aerobe and anaerobe, effect of environmental parameters on phenol degradation and kinetic analysis of biodegradation, and various
138 citations
TL;DR: Proposed cell growth kinetic model was used to characterize the substrates interactions in the dual substrates system and demonstrated that these models adequately described the dynamic behaviors of phenol and m -cresol as single and mixed substrates by the strain of A. faecalis.
126 citations
TL;DR: A new phenol-degrading halophilic bacterium isolated from a hypersaline soil is reported, indicating the potential application of the strain PH2-2 for treatment of hypersaline Phenol-containing industrial wastewaters.
86 citations
References
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TL;DR: A model was developed which was able to successfully predict phenol and p-cresol levels during batch growth and did not appear to metabolize either of the two substrates preferentially.
Abstract: The kinetics of the batch degradation of phenol and p-cresol in a dual-substrate system by Pseudomonas putida was investigated. A model was developed which was able to successfully predict phenol and p-cresol levels during batch growth. A constant specific growth rate (μ) was assumed together with the assumption that the biomass yield factors (Y) for growth on phenol and p-cresol were identical. These simplifying assumptions allowed an analytical solution to the model equations to be easily obtained, as well as reducing the number of unknown parameters that required estimation. Phenol and p-cresol were metabolized simultaneously by P. putida. P. putida did not appear to metabolize either of the two substrates preferentially. The rate of utilization of aparticular organic substrate was related to its fraction of the total organic substrate present, i.e., for substrate 1 the assimilation rate depended on S
1/(S
1+S
2), where S
iis the concentration of the ith substrate.
66 citations
"Biodegradation of phenol and cresol..." refers background in this paper
...Hutchinson & Robinson (1988) reported p-cresol utilization by Pseudomonas putida, with a lmax of 0.48 h )1 , very low compared with the lmax value...
[...]
...The simultaneous metabolism of phenol and cresol has so far only been reported by Hutchinson & Robinson (1988) , who studied the degradation kinetics of both phenol and cresol by Pseudomonas putida in a mixture...
[...]
33 citations
TL;DR: Phenol, benzene and naphthalene were exposed, both singly and in combination, to oil refinery settling pond inocula as mentioned in this paper, and the results illustrate the difficulty of predicting environmental fates of complex chemical mixtures.
Abstract: Phenol, benzene and naphthalene were exposed, both singly and in combination, to oil refinery settling pond inocula. Although all three aromatic organics degraded rapidly when dosed singly, benzene and naphthalene were not metabolized in the presence of phenol. These results illustrate the difficulty of predicting environmental fates of complex chemical mixtures.
31 citations
"Biodegradation of phenol and cresol..." refers background in this paper
...Complex degradation patterns are frequently observed in other types of mixed substrate degradation, for example a number of substrate interactions have been observed during hydrocarbon degradation: Bauer & Capone (1988) reported that the rate of anthracene degradation was enhanced in the presence of benzene; Meyer et al. (1984) observed the diauxic degradation of benzene in the presence of phenol....
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TL;DR: The results suggested that the prediction of the fate of a single organic component in a reactor receiving a multicomponent feed is a very difficult task.
Abstract: A pure bacterial culture capable of utilizing either L-lysine or 2-chlorophenol (2-CP) as sole carbon source was isolated and used in continuous culture experiments to determine its response to dual substrate limitation by those two compounds. Dilution rate and feed composition were each set at three levels in a two factorial experimental design. The total chemical oxygen demand (COD) of the feed was fixed at 225 mg/L and its composition was varied by changing the ratio of lysine to 2-CP. The effects of the two independent variables (dilution rate and feed composition) on the concentrations of cells, lysine, COD, and dissolved organic carbon (DOC) in the reactors were systematic whereas the effects on the 2-CP concentration were less predictable. The concentrations of the two substrates responded to the two independent variables in a complex interactive manner which is not explained by existing models for dual, substitutable substrates. Rather, the results suggested that the prediction of the fate of a single organic component in a reactor receiving a multicomponent feed is a very difficult task.
29 citations
TL;DR: A phenol and solvents degrading mixed culture from soil and sludge supplemented with Pseudomonas sp.
Abstract: A phenol and solvents degrading mixed culture from soil and sludge supplemented with Pseudomonas sp. strain B13 which harbors genes coding the sequence for chlorocatechol breakdown was acclimated to monochlorophenol degradation. Pyrocatechase activity was used as an indicator for the adaptation status of the culture.
24 citations