A novel electrospun polyurethane nanofibre membrane ― production parameters and suitability for wastewater (WW) treatment

The aim of this study was to investigate the suitability of a novel electrospun polyurethane nanofibre material for water-treatment purposes. Bacterial removal efficiency was tested in the laboratory by filtering artificial water spiked with Escherichia coli through a 0.25 µm nanofibre membrane. The...

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Bibliographic Details
Published in:Water science and technology 2014-01, Vol.69 (7), p.1496-1501
Main Authors: LEV, Jaroslav, HOLBA, Marek, DOSEK, Michal, KALHOTKA, Libor, MIKULA, Přemysl, KIMMER, Dušan
Format: Article
Language:English
Subjects:
Applied sciences
Bacteria
E coli
Efficiency
Electrospinning
Escherichia coli
Exact sciences and technology
Experiments
Filtered wastewater
Filtration
Filtration - instrumentation
General purification processes
Laboratories
Membranes
Membranes, Artificial
Microfiltration
Microorganisms
Nanofibers
Pilot Projects
Pollution
Polyurethane
Polyurethane resins
Polyurethanes - chemical synthesis
Pore size
Porosity
Povidone
Removal
Sedimentation
Wastewater
Wastewater treatment
Wastewater treatment plants
Wastewaters
Water purification
Water Purification - instrumentation
Water treatment and pollution
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Summary:The aim of this study was to investigate the suitability of a novel electrospun polyurethane nanofibre material for water-treatment purposes. Bacterial removal efficiency was tested in the laboratory by filtering artificial water spiked with Escherichia coli through a 0.25 µm nanofibre membrane. The results were compared with those obtained using a commercial microfiltration material (MV020T) with a similar pore size (0.20 µm). Alongside the laboratory experiments, we also determined filtration efficiency with semi-pilot scale experiments using actual wastewater from the secondary sedimentation tank of a wastewater treatment plant. The laboratory experiments indicated very high log10 removal efficiency, ranging from 5.8 to 6.8 CFU (colony-forming units)/ml. These results were better than those of the commercial membrane (3.8-4.6 CFU/ml). The semi-pilot scale experiment confirmed the membrane's suitability for microbial filtration, with both E. coli and total culturable microorganisms (cultured at both 22 and 36 °C) showing a significant decline compared to the non-filtered control (wastewater from the secondary outlet).
ISSN:0273-1223
1996-9732
DOI:10.2166/wst.2014.034