Respirometry kinetics of phenol oxidation by Comamonas testosteroni Pb50 under various conditions of nutritional stress

Páca, Jan; Kosteckova, A.; Pacova, Leona; Prell, A.; Halecky, Martin; Stiborová, Marie; Kozliak, Evguenii; Soccol, Carlos Ricardo

doi:10.1590/s1516-89132010000600030

Cited by 5 publications

(2 citation statements)

References 38 publications

(27 reference statements)

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“…In addition, respirometric methods were applied to study the effect of nutrients pulses on the kinetic of growth of microorganisms (Oliveira et al 2011). The OUR curve reflects the response of the microorganism, linked to its biological activity, when the nutritional environment is modified (Paca et al 2010).…”

Section: Study Of the Influence Of Nutrient Solution Pulses On The Grmentioning

confidence: 99%

Experimental and statistical analysis of nutritional requirements for the growth of the extremophile Deinococcus geothermalis DSM 11300

et al. 2014

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Few studies concerning the nutritional requirements of Deinococcus geothermalis DSM 11300 have been conducted to date. Three defined media compositions have been published for the growth of this strain but they were found to be inadequate to achieve growth without limitation. Furthermore, growth curves, biomass concentration and growth rates were generally not available. Analysis in Principal Components was used in this work to compare and consequently to highlight the main compounds which differ between published chemically defined media. When available, biomass concentration, and/or growth rate were superimposed to the PCA analysis. The formulations of the media were collected from existing literature; media compositions designed for the growth of several strains of Deinococcaceae or Micrococcaceae were included. The results showed that a defined medium adapted from Holland et al. (Appl Microbiol Biotechnol 72:1074-1082, 2006) was the best basal medium and was chosen for further studies. A growth rate of 0.03 h(-1) and a final OD600nm of 0.55 were obtained, but the growth was linear. Then, the effects of several medium components on oxygen uptake and biomass production by Deinococcus geothermalis DSM 11300 were studied using a respirometry-based method, to search for the nutritional limitation. The results revealed that the whole yeast extract in the medium with glucose is necessary to obtain a non-limiting growth of Deinococcus geothermalis DSM 11300 at a maximum growth rate of 0.64 h(-1) at 45 °C.

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Section: Study Of the Influence Of Nutrient Solution Pulses On The Grmentioning

confidence: 99%

Experimental and statistical analysis of nutritional requirements for the growth of the extremophile Deinococcus geothermalis DSM 11300

et al. 2014

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“…Monod or Haldane equations have been used to characterize the biodegradation kinetics of several phenolic compounds. However, in some cases, these models are not adequate to represent the biodegradation process under transient conditions in activated sludge systems (Hao et al 2002;Paca et al 2010;Sahinkaya and Dilek 2005).…”

Section: Modeling the Aerobic Biodegradation Of 4cp By Phenol-acclima...mentioning

confidence: 99%

Monitoring and modeling 4-chlorophenol biodegradation kinetics by phenol-acclimated activated sludge by using open respirometry

Lobo

Bértola

Contreras

et al. 2017

Environ Sci Pollut Res

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The aim of this study was to analyze the mechanisms, stoichiometry, and stability of 4-chlorophenol (4CP) biodegradation kinetics by phenol-acclimated activated sludge using open respirometry. While the removal of 4CP was higher than 98%, the removal of chemical oxygen demand (COD) ranged between 69 and 79% due to the accumulation of an intermediate metabolite. The value obtained from respirometric profiles for the stoichiometric ratio of O to 4CP (Y) was 1.95 ± 0.04 mol of oxygen consumed per mol of 4CP removed. This Y value reflected the action of the oxygenases responsible for the first steps of the aerobic oxidation of 4CP. The 4CP degradation activity decreased noticeably when successive pulses of 4CP were added to the respirometer. A mathematical model was developed to represent the aerobic biodegradation of 4CP. The fitted model adequately predicted the oxygen consumption rate, total phenols, and soluble COD concentrations as a function of time. The results presented could help to predict the dynamic of biodegradation of chlorophenols in a biological wastewater treatment system.

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Carbon and nutrient-limiting conditions stimulate biodegradation of low concentration of phenol

Saha

Badhe

Pal

et al. 2017

Biochemical Engineering Journal

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Respirometry kinetics of phenol oxidation by Comamonas testosteroni Pb50 under various conditions of nutritional stress

Abstract: Kinetics of phenol biodegradation using suspended biomass of Comamonas testosteroni

Cited by 5 publications

References 38 publications

Experimental and statistical analysis of nutritional requirements for the growth of the extremophile Deinococcus geothermalis DSM 11300

Experimental and statistical analysis of nutritional requirements for the growth of the extremophile Deinococcus geothermalis DSM 11300

Monitoring and modeling 4-chlorophenol biodegradation kinetics by phenol-acclimated activated sludge by using open respirometry

Carbon and nutrient-limiting conditions stimulate biodegradation of low concentration of phenol

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