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Fabrication of Fiber Filters with Antibacterial Properties for VOC and Particle Removal

Category: Control Techniques and Strategy

Volume: 19 | Issue: 8 | Pages: 1892-1899
DOI: 10.4209/aaqr.2018.12.0474
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To cite this article:
Juuti, P., Nikka, M., Gunell, M., Eerola, E., Saarinen, J.J., Omori, Y., Seto, T. and Mäkelä, J.M. (2019). Fabrication of Fiber Filters with Antibacterial Properties for VOC and Particle Removal. Aerosol Air Qual. Res. 19: 1892-1899. doi: 10.4209/aaqr.2018.12.0474.

Paxton Juuti 1, Markus Nikka1, Marianne Gunell2,3, Erkki Eerola2,3, Jarkko J. Saarinen4, Youichi Omori5, Takafumi Seto6, Jyrki M. Mäkelä1

  • 1 Aerosol Physics, Faculty of Engineering and Natural Sciences, Tampere University, 33720 Tampere, Finland
  • 2 Department of Clinical Microbiology, Turku University Hospital, 20521 Turku, Finland
  • 3 Department of Medical Microbiology and Immunology, University of Turku, 20500 Turku, Finland
  • 4 Department of Chemistry, University of Eastern Finland, 80100 Joensuu, Finland
  • 5 Sanzen Seishi Co. Ltd., Kanazawa, Ishikawa 920-0338, Japan
  • 6 School of Natural System, College of Science and Engineering, Kanazawa University, Kanazawa, Ishikawa 920-1192, Japan

Highlights

  • Fabrication of filters with VOC adsorption and antibacterial functionalities.
  • Antibacterial activity introduced with two different methods.
  • Comparison of particulate and fibrous nanoscale silver.
  • On-line characterization of particulate silver coating process.

Abstract

The use of filters to control air quality has been implemented widely in all types of structures. Unfortunately, filters risk becoming platforms for the growth of bacteria, which can then be dispersed further in the air stream. To combat this, antibacterial materials are being incorporated into filter media. In this work, we tested two routes for introducing nanoscale silver into filters containing activated carbon fibers (ACF): first, by adding silver nanofibers directly to the fiber fabrication process and second, by coating a pre-existing filter with silver nanoparticles generated by a liquid flame spray (LFS). The resultant filters were evaluated for methanol adsorption, particle penetration and antibacterial activity. The results show that both methods are suitable for producing antibacterial filters as well as being highly tailorable and scalable for specific needs.

Keywords

Air filtration Liquid flame spray Nanoscale silver Adsorption


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