Pseudomonas aeruginosa Articles
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Biosorption of copper(II) by Pseudomonas aeruginosa
The mechanism of accumulation of copper(II) by Pseudomonas aeruginosa was investigated. Uptake consisted of a rapid process (likely to be extracellular binding) followed by a slow phase (possibly cellular uptake). The sorption capacity of the microbe was found to be 50 mg/g, and sorption followed the Langmuir isotherm. The presence of mild mineral acids (0.1 N HCl) led to destructive ...
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Immobilised microbial reactor for heavy metal pollution control
The copper removal potential of Pseudomonas aeruginosa immobilised on different adsorbent resins has been studied. Duolite S-761 was found to be the most suitable matrix for bacterial immobilisation. Column studies were conducted using virgin as well as bacteria-immobilised resin. The experimental results reveal that resin with immobilised cells as sorbent increased the column capacity by more ...
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Optimisation of process variables for microbial degradation of phenol by binary mixed culture of Pseudomonas aeruginosa and Pseudomonas fluorescens using response surface methodology
The removal efficiency of phenol from aqueous solutions was measured using an indigenous freely suspended binary mixed culture of Pseudomonas aeruginosa and Pseudomonas fluorescens. Experiments were performed as a function of temperature (25?45°C), aeration (1.0?3.5 vvm) and agitation (200?600 rpm). Optimisation of these three process parameters for phenol biodegradation was studied. ...
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Biosorption of Pb(II) from synthetic wastewater onto Pseudomonas aeruginosa
The biosorption property onto Pseudomonas aeruginosa was represented by the Langmuir isotherm, and the maximum capacity of Pb(II) was 45 mg g−1 dry weight of bacteria at pH 5. The biosorption capacity of Pb(II) in a binary system increased with increasing Pb(II) concentration, from 0 to 50 mg l−1 in which Cr(III) existed at a constant concentration of 50 mg l−1. This result indicates that there ...
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Estimation of the energetic parameters associated with the continuous aerobic biodegradation of phenol by monoculture of Pseudomonas aeruginosa and Pseudomonas fluorescence
The objective of this study was to estimate and analyse the growth parameters of indigenous monoculture of Pseudomonas aeruginosa and Pseudomonas fluorescence on phenol in an aerobic chemostat culture. The biodegradation data were checked for consistency using carbon and available electron balances and growth parameters were estimated using two forms of growth models: reparameterised Pirt's model ...
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Effect of silver-doped phosphate-based glasses on bacterial biofilm growth
Silver-containing phosphate-based glasses were found to reduce the growth of Pseudomonas aeruginosa and Staphylococcus aureus biofilms, which are leading causes of nosocomial infections. The rates of glass degradation (1.27 to 1.41 µg·mm–2·h–1) and the corresponding silver release were found to account for the variation in biofilm growth inhibitory ...
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Phenotypic heterogeneity of Pseudomonas aeruginosa isolates in the protected nature park ‘Palić’ (Serbia)
Pseudomonas aeruginosa is a globally distributed environmental bacterium, which is also a significant opportunistic pathogen of humans, animals and plants. It is considered that wide distribution of this bacterium is connected with its most significant constitutive property to form biofilms, and that this multicellular mode of growth, predominant in nature, serves as a protective ...
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Inactivation of
Pseudomonas aeruginosa in electrochemical advanced oxidation process with diamond electrodesThe electrochemical advanced oxidation process (EAOP) with diamond electrodes may serve as an additional technology to the currently approved methods for water disinfection. Only few data exist on the microbicidal effect of the EAOP. The aim of our study was to investigate the microbicidal effect of a flow-through oxidation cell with diamond electrodes, using Pseudomonas aeruginosa as the test ...
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Detection of
Pseudomonas aeruginosa by PCR in tap-water and bottled mineral water in the Isfahan province of IranThe purpose of this study was to consider the use of a simple polymerase chain reaction (PCR) as an accurate, safe and rapid method to detect Pseudomonas aeruginosa in tap-water and bottled mineral water from Isfahan province, Iran. A total of 224 tap-water and bottled mineral water samples were taken over six months, from July to December 2010. DNA (deoxyribonucleic acid) was extracted from ...
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Response surface methodology for cadmium biosorption on Pseudomonas aeruginosa
In this research the effects of various physicochemical factors on Cd2+ biosorption such as initial metal concentration, pH and contact exposure time were studied. This study has shown a Cd2+ biosorption, equilibrium time of about 5 min for Pseudomonas aeruginosa and the adsorption equilibrium data were well described by Langmuir equation. The maximum capacity for biosorption has been ...
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Efficient photo-oxidation of phenol and photo-inactivation of bacteria by cationic tetrakis(trimethylanilinium)porphyrins
Photo-oxidation of phenol in aqueous alkaline and neutral buffer solutions by irradiation with visible light in the presence of 5,10,15,20-tetrakis(4-N,N,N-trimethylanilinium)porphyrin (TAPP) and its zinc metal ion (ZnTAPP) photo-sensitizers is described. The inhibitory effect of these molecules on the growth of Gram-positive bacteria Bacillus subtilis and Bacillus strophaeus and the ...
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Kinetics of batch microbial degradation of phenols by indigenous binary mixed culture of Pseudomonas aeruginosa and Pseudomonas fluorescens
The potential of various organisms to metabolise organic compounds has been observed to be a potentially effective means in disposing of hazardous and toxic wastes. Phenolic compounds have long been recognised as one of the most recalcitrant and persistent organic chemicals in the environment. The bioremediation potential of an indigenous binary mixed culture of Pseudomonas aeruginosa and ...
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Chlorine disinfection of
Pseudomonas aeruginosa , total coliforms,Escherichia coli andEnterococcus faecalis : revisiting reclaimed water regulationsPathogenic organisms can be transmitted orally through drinking water or through skin and mucosae by both direct and indirect contact, and their presence in water thus has a negative impact on public health. In wastewater treatment plants (WWTP), water is disinfected to inactivate pathogens. The quantification of several microbial indicators in aquatic systems is required to estimate the ...
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A novel three-stage bioreactor for the effective detoxification of sodium dodecyl sulphate from wastewater
Anionic surfactants like sodium dodecyl sulphate (SDS), due to its extensive disposal to water bodies cause detrimental effects to the ecosystem. Among the various attempts to reduce the after effects of these toxicants, microbial induced bioremediation serves as a promising strategy. The current study aimed to develop a three stage bioreactor to remediate anionic surfactants in wastewater ...
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Decolorization of Reactive Black 39 and Acid Red 360 by Pseudomonas aeruginosa
The aim of this work is to evaluate decolorization of Reactive Black 39 (RB39) and Acid Red 360 (AR360) by Pseudomonas aeruginosa, which was isolated from a non-dye-contaminated activated sludge biomass. In the present study, the effect of various physicochemical parameters, initial dye concentration, temperature, pH, inoculum size and yeast extract concentration as an organic source on ...
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Detection of boron removal capacities of different microorganisms in wastewater and effective removal process
In this study boron removal capacities of different microorganisms were tested. Candida tropicalis, Rhodotorula mucilaginosa, Micrococcus luteus, Bacillus thuringiensis, Bacillus cereus, Bacillus megaterium, Bacillus pumilus, Pseudomonas aeruginosa and Aspergillus versicolor were examined for their boron bioaccumulation capacities in simulated municipal wastewater. A. versicolor and B. cereus ...
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Electrochemical inactivation kinetics of boron-doped diamond electrode on waterborne pathogens
A boron-doped diamond (BDD) electrode was constructed as a water disinfector for the inactivation of water borne pathogens. The bactericidal effect of the disinfector was evaluated on artificially contaminated waters containing, respectively, Escherichia coli, Pseudomonas aeruginosa and Legionella pneumophila at high density. By treating the bacterial suspensions with 4 V of constant voltage ...
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Typing of
Pseudomonas aeruginosa strains isolated from Greek water samples by three typing methods: serotyping, Random Amplified Polymorphic DNA (RAPD) and Pulsed Field Gel Electrophoresis (PFGE)The study of various types of Pseudomonas aeruginosa strains isolated from water environments is of paramount importance from a public health point of view, due to their ubiquity and pathogenicity. Molecular (Random Amplified Polymorphic DNA and Pulsed Field Gel Electrophoresis) and phenotypical (serotyping) typing methods were applied to environmental P. aeruginosa strains. The typeability and ...
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Decrease of Pseudomonas aeruginosa biofilm formation by food waste materials
The formation of bacterial biofilm on various surfaces has significant negative economic effects. The aim of this study was to find a simple procedure to decrease the Pseudomonas aeruginosa biofilm formation in a water environment by using different food waste biological materials as signal molecule adsorbents. The selected biomaterials did not reduce the cell growth but affected biofilm ...
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Isolation and characterization of some polycyclic aromatic hydrocarbon degrading bacteria from Nsukka soils in Nigeria
Abstract: Twenty-four bacteria capable of utilizing naphthalene, as their sole source of carbon and energy for growth were isolated from three different sites in Nsukka, Nigeria. By standard bacteriological methods, these bacteria were characterized taxonomically as belonging to the genus Pseudomonas, Burkholderia or Actinomycetes. Two of the isolates, which showed the highest growth during ...
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