Browsing Chemical and Bioprocess Engineering Research Collection by Subject "Biofilms"

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Browsing Chemical and Bioprocess Engineering Research Collection by Subject "Biofilms"

Now showing items 1-11 of 11

Characterisation of a modified rotating disk reactor for the cultivation of Staphylococcus epidermidis biofilm

Cotter, John J. ; O'Gara, James P. ; Stewart, Philip S. ; Pitts, Betsey ; Casey, Eoin (Wiley, 2010-12)

Aims: The purpose of this study was to develop a system that would allow biofilms to be cultivated under strictly defined conditions in terms of dissolved oxygen, fluid shear and to assess whether the method was suitable ...
Comparison of planktonic and biofilm cultures of Pseudomonas fluorescens DSM 8341 cells grown on fluoroacetate

Heffernan, Barry ; Murphy, Cormac D. ; Casey, Eoin (American Society for Microbiology, 2009-05)

Comparisons between the physiological properties of Pseudomonas fluorescens biofilm cells grown in a tubular biofilm reactor and planktonic cells grown in a chemostat were performed. Fluoroacetate was the sole carbon source ...
Disinfection of meticillin-resistant Staphylococcus aureus and Staphylococcus epidermidis biofilms using a remote non-thermal gas plasma

Cotter, John J. ; Maguire, Paul ; Soberon, Felipe ; Daniels, Stephen ; O'Gara, James P. ; Casey, Eoin (Elsevier, 2011-05)

The effective disinfection of hospital surfaces is recognised as an important factor in preventing hospital-acquired infections. The purpose of this study was to quantify the disinfection rate of a novel gas plasma system ...
Factors influencing 4-fluorobenzoate degradation in biofilm cultures of Pseudomonas knackmussii B13

Misiak, Katarzyna ; Casey, Eoin ; Murphy, Cormac D. (Elsevier, 2011-05)

Membrane aerated biofilm reactors (MABRs) have potential in wastewater treatment as they permit simultaneous COD minimisation, nitrification and denitrification. Here we report on the application of the MABR to the removal ...
Membrane aerated biofilms for high rate biotreatment : performance appraisal, engineering principles, scale-up and development requirements

Syron, Eoin ; Casey, Eoin (ACS, 2008-03-15)

Diffusion of the electron acceptor is the rate controlling step in virtually all biofilm reactors employed for aerobic wastewater treatment. The membrane-aerated biofilm reactor (MABR) is a technology that can deliver ...
Model-based comparative performance analysis of membrane aerated biofilm reactor configurations

Syron, Eoin ; Casey, Eoin (Wiley, 2008-04-15)

The potential of the membrane aerated biofilm reactor (MABR) for high-rate bio-oxidation was investigated. A reaction-diffusion model was combined with a preliminary hollow-fiber MABR process model to investigate reaction ...
Oxygen-mediated regulation of biofilm development is controlled by the alternative sigma factor sigma(B) in Staphylococcus epidermidis

Cotter, John J. ; O'Gara, James P. ; Mack, Dietrich ; Casey, Eoin (ASM, 2009-01)

Using a modified rotating-disk reactor to sparge oxygen to Staphylococcus epidermidis cultures, we found that oxygen negatively regulates biofilm development by influencing the activity of {sigma}B. Under anaerobic conditions, ...
Rapid depletion of dissolved oxygen in 96 well microtitre plate Staphylococcus epidermidis biofilm assays promotes biofilm development and is influenced by inoculum cell concentration

Cotter, John J. ; O'Gara, James P. ; Casey, Eoin (Wiley, 2009-08-01)

Biofilm-related research using 96-well microtiter plates involves static incubation of plates indiscriminate of environmental conditions, making oxygen availability an important variable which has not been considered to ...
Studies on the effect of concentration of a self-inhibitory substrate on biofilm reaction rate under co-diffusion and counter diffusion configurations

Syron, Eoin ; Kelly, Hugh ; Casey, Eoin (Elsevier, 2009-06-15)

A simple mathematical model was developed to investigate the utilization rate of a self-inhibitory substrate in idealised biofilm reactors operating with either counter-diffusion or co-diffusion of oxygen and phenol. This ...
Tracer measurements reveal experimental evidence of biofilm consolidation

Casey, Eoin (Wiley, 2007-11-01)

The ability to simultaneously measure both biofilm thickness and the mass transfer coefficient of an inert tracer through it provides a powerful method to study biofilm development. In this communication previously published ...
Treatment of fluoroacetate by a Pseudomonas fluorescens biofilm grown in membrane aerated biofilm reactor

Heffernan, Barry ; Murphy, Cormac D. ; Syron, Eoin ; Casey, Eoin (ACS Publications, 2009)

Fluorinated organic compounds have widespread applications, and their accumulation in the environment is a concern. Biofilm reactors are an effective technology for the treatment of contaminated wastewater, yet almost no ...