Ghent University Academic Bibliography

Advanced

Performance assessment of functionalized electrospun nanofibres for removal of pathogens

Nele Daels UGent, Annelies Goethals UGent, Karen De Clerck UGent and Stijn Van Hulle UGent (2012) 2th International Conference on Electrospinning, Abstracts. p.38-38
abstract
Perfonnance Assessment of Functionalized Electrospun Nanofibres for Removal of PathogensKeywords: functionalised nanofibre, pathogen removal, membrane filtration. The c1ectrospinning technique is a process for making continuous nanofibrcs in a nonwoven fonn. This process spins fibres ranging from 80 om diameter to several hundred nanometers. The non-woven structure is produced by app lying a high voltage to the anode, submerged in a spinn ing solution. This produces a charged jet of fluid when the electrical force is highcr than the surface tension of the solution and the fibres are collected on a grounded aluminum plate. Nanofibres have a small pore size and a large surface area to volume ratio compared to nonwovens (this ratio for a nanofibre can be as large as 1000 times of that of a microfibre). This, together with their low density and interconnected open pore structure. make the nanofibre nonwoven appropriate for a wide variety of filtration applications (Huang et al.. 2003). Due to the large effective surface areas. nanofibres can carry functional agents with different properties. such as biocidcs. With microfiltration membranes it is possible to retain suspended solids and micro-organisms. The added value of the tested nanofibre microfiltration membranes functionalized with silver nanoparticles (nAg) or other biocides to pathogen removal was studied. The biocides used in this study are commercially available. WSCP for example. is used as a cooling tower biocide and is applied directly into the water. Silver nanoparticles are nowadays implemented in a wide variety of consumer products for antimicrobial controL The aim of the study is to examine the effectiveness of different biocides and the possibility to electrospin them in a steady state nanofibre membrane. The results show that due to the silver nanoparticles and the funct ionalisation with biocides in the functionalized membrane a higher efficiency (3.9 10giO - 5,5 10glO) could be achieved. Further, the removal of pathogens is a factor 100 (2 10g10) higher with a WSCP (5%) than conventional microfihration. Functionalisation with Ag nanoparticles gave a 4 10gi0 removal. It is generally known that these particles only have effect on gram negative bacteria such as E. coli. WSCP and bronopol are bactericides that can be applicd on c1ectrospun nanofibres and it has also effect on gram positive bacteria (Chen et aI., 2008). The removal with a non-functionalised membrane is not as good as other micro-filtration studies. With other commercial membranes a 2 log I 0 - 4 logl 0 removal is possible (Zodrow et al.. 2009).
Please use this url to cite or link to this publication:
author
organization
year
type
conference
publication status
published
subject
in
2th International Conference on Electrospinning, Abstracts
pages
38 - 38
publisher
Korea Advanced Institute of Science and Technology
place of publication
Jeju, Korea
conference name
2th International Conference on Electrospinning (ELECTROSPIN 2012)
conference location
Jeju, Korea
conference start
2012-05-29
conference end
2012-06-01
language
English
UGent publication?
yes
classification
C3
copyright statement
I have transferred the copyright for this publication to the publisher
id
2154246
handle
http://hdl.handle.net/1854/LU-2154246
date created
2012-06-14 17:24:12
date last changed
2013-02-12 15:31:03
@inproceedings{2154246,
  abstract     = {Perfonnance Assessment of Functionalized Electrospun Nanofibres for Removal of PathogensKeywords: functionalised nanofibre, pathogen removal, membrane filtration. The c1ectrospinning technique is a process for making continuous nanofibrcs in a nonwoven fonn. This process spins fibres ranging from 80 om diameter to several hundred nanometers. The non-woven structure is produced by app lying a high voltage to the anode, submerged in a spinn ing solution. This produces a charged jet of fluid when the electrical force is highcr than the surface tension of the solution and the fibres are collected on a grounded aluminum plate. Nanofibres have a small pore size and a large surface area to volume ratio compared to nonwovens (this ratio for a nanofibre can be as large as 1000 times of that of a microfibre). This, together with their low density and interconnected open pore structure. make the nanofibre nonwoven appropriate for a wide variety of filtration applications (Huang et al.. 2003). Due to the large effective surface areas. nanofibres can carry functional agents with different properties. such as biocidcs. With microfiltration membranes it is possible to retain suspended solids and micro-organisms. The added value of the tested nanofibre microfiltration membranes functionalized with silver nanoparticles (nAg) or other biocides to pathogen removal was studied. The biocides used in this study are commercially available. WSCP for example. is used as a cooling tower biocide and is applied directly into the water. Silver nanoparticles are nowadays implemented in a wide variety of consumer products for antimicrobial controL The aim of the study is to examine the effectiveness of different biocides and the possibility to electrospin them in a steady state nanofibre membrane. The results show that due to the silver nanoparticles and the funct ionalisation with biocides in the functionalized membrane a higher efficiency (3.9 10giO - 5,5 10glO) could be achieved. Further, the removal of pathogens is a factor 100 (2 10g10) higher with a WSCP (5\%) than conventional microfihration. Functionalisation with Ag nanoparticles gave a 4 10gi0 removal. It is generally known that these particles only have effect on gram negative bacteria such as E. coli. WSCP and bronopol are bactericides that can be applicd on c1ectrospun nanofibres and it has also effect on gram positive bacteria (Chen et aI., 2008). The removal with a non-functionalised membrane is not as good as other micro-filtration studies. With other commercial membranes a 2 log I 0 - 4 logl 0 removal is possible (Zodrow et al.. 2009).},
  author       = {Daels, Nele and Goethals, Annelies and De Clerck, Karen and Van Hulle, Stijn},
  booktitle    = {2th International Conference on Electrospinning, Abstracts},
  language     = {eng},
  location     = {Jeju, Korea},
  pages        = {38--38},
  publisher    = {Korea Advanced Institute of Science and Technology},
  title        = {Performance assessment of functionalized electrospun nanofibres for removal of pathogens},
  year         = {2012},
}

Chicago
Daels, Nele, Annelies Goethals, Karen De Clerck, and Stijn Van Hulle. 2012. “Performance Assessment of Functionalized Electrospun Nanofibres for Removal of Pathogens.” In 2th International Conference on Electrospinning, Abstracts, 38–38. Jeju, Korea: Korea Advanced Institute of Science and Technology.
APA
Daels, N., Goethals, A., De Clerck, K., & Van Hulle, S. (2012). Performance assessment of functionalized electrospun nanofibres for removal of pathogens. 2th International Conference on Electrospinning, Abstracts (pp. 38–38). Presented at the 2th International Conference on Electrospinning (ELECTROSPIN 2012), Jeju, Korea: Korea Advanced Institute of Science and Technology.
Vancouver
1.
Daels N, Goethals A, De Clerck K, Van Hulle S. Performance assessment of functionalized electrospun nanofibres for removal of pathogens. 2th International Conference on Electrospinning, Abstracts. Jeju, Korea: Korea Advanced Institute of Science and Technology; 2012. p. 38–38.
MLA
Daels, Nele, Annelies Goethals, Karen De Clerck, et al. “Performance Assessment of Functionalized Electrospun Nanofibres for Removal of Pathogens.” 2th International Conference on Electrospinning, Abstracts. Jeju, Korea: Korea Advanced Institute of Science and Technology, 2012. 38–38. Print.