The Removal of Indoor Suspended Microorganisms of Eco-friendly Antimicrobial Copper Net Filter

친환경소재인 항균동망 필터의 실내 부유 미생물 제거 연구

  • Received : 2018.01.08
  • Accepted : 2018.04.06
  • Published : 2018.04.30


As the lives of people have improved, the demand for improved indoor air quality has increased. Various methods are used to remove biological air pollutants, such as UV/photocatalytic devices and ozone generators. However, these methods have disadvantages such as energy consumption, high corrosivity and toxicity. To overcome these disadvantages, an antibacterial copper filter was fabricated and its antimicrobial activity was then tested against two fungi (P. pinophilum, C. globosum) and one bacteria (S. aureus) Moreover, the ability to remove suspended microorganisms was tested step by step from the chamber stage to the air conditioning system. The results revealed 100% antimicrobial activity after 24 hours for the two fungi, while this value was 99.9% after 18 hours for the bacteria. Moreover, the antibacterial activity was higher when the chamber and air purifier were used than was obtained using a general antibacterial HEPA filter. Also, as a filter for system air conditioner, the antibacterial activity was lowered in offices and hospitals. In conclusion, the copper filter was found to have sufficient antibacterial activity for use as an antibacterial filter; however, further research on its preparation methods and materials is warranted.


Air filter;Antimicrobial copper;Eco-friendly material;Indoor air quality;Indoor suspended microorganism


Supported by : 한국연구재단


  1. K. Miura, T. Takatsuka, U Yanagi, S. Yamazaki, "Evaluation method and evaluation result of antibacterial performance of air-conditioning equipment subjected to antibacterial treatment," Air cleaning technology, vol. 22, no. 2, pp. 40-49, 2009.
  2. K. Y. Yoon, J. H. Park, Y. S. Kim, C. W. Park, J. H. Hwang, "Numerical Study on the Microbial Contamination of Antimicrobial Air Filters," Korean Society for Atmospheric Environment, 2009.
  3. G. R. Ahn, "Concentration and Diversity of Fungi in Indoor Air of Multiuse Facilities and Water-damaged Houses in Korea," Department of Microbiology Dankook University, 2017.
  4. Y. A. Jang, S. Y. Yoo, S. W. Lee, S. K. Kam, M. G. Lee, "E. coli Antibacterial Performance of Fixed Antibacterial Filter for Air Purifier," Proceedings of the Korean Environmental Sciences Society Conference, vol. 16, no. 1, pp. 542-544, 2007.
  5. J. H. Hwang, K. Y. Yoon, J. H. Byeon, J. H. Park, C. W. Park, "Bio-aerosol control technology using antibacterial filter coated with silver nanoparticles," Air cleaning technology, vol. 20, no. 1, pp. 57-65, 2007.
  6. C. S. Kong, J. Y. Bang, H. S. Kim, "Study on Production of Kimchi Enzyme Antibacterial Filter Using Electrospray," Textile Science and Engineering, vol. 50, no. 2, pp. 120-125, 2013. DOI:
  7. Y. H. Yoon, S. H. Nam, J. C. Joo, H. S. Ahn, "Photocatalytic disinfection of indoor suspended microorganisms (Escherichia coli and Bacillus subtilis spore) with ultraviolet light," Journal of the Korea Academia-Industrial cooperation Society, vol. 15, no. 2, pp. 1204-1210, 2014. DOI:
  8. H. G. Lee, T. H. Kim, J. S. Jung, J. G. Kim, "A Basic Study on Inner Air Filter Sterilization System using Ozone," The Korean Institute of Electrical Engineers, pp. 1206-1207, 2015.
  9. S. Y. Park, J. H. Jung, G. B. Hwang, G. N. Bae, Y. P. Kim, C. W. Nho, "Comparison of Antibacterial Ability of Air Filter Media Treated with a Natural Antibacterial Agent by Three Treatment Methods," Journal of Korean Society for Atmospheric Environment, vol. 29, no. 2, pp. 125-134, 2013. DOI:
  10. I. S. Chang, J. Y. Kim, "Water treatment sterilization technology using ultraviolet rays," The Proceedings of the Korean Institute of Illuminating and Electrical Installation Engineers, vol. 19, no. 5, pp. 14-21, 2005.
  11. J. A. Lemire, J. J. Harrison, R. J. Turner, "Antimicrobial activity of metals: mechanisms, molecular targets and applications," Nature review. Microbiology, vol. 11, no. 6, pp. 371-384, 2013. DOI:
  12. G. Grass, C. Rensing, M. Solioz, "Metallic copper as an antimicrobial surface," Appl. Environ. Microbiol, vol. 77, no. 5, pp. 1541-1547, 2011. DOI:
  13. M. yasuyuki, K. Kunihiro, S. Kurissery, N. Kanavillil, Y. Sato, Y Kikuchi, "Antibacterial properties of nine pure metals: a laboratory study using Staphylococcus aureus and Escherichia coli," Biofouling, vol. 26, no. 7, pp. 851-858, 2010. DOI:
  14. K. Malachova, P. Praus, Z. Rybkova, O. Kozak, "Antibacterial and antifungal activities of silver, copper and zinc montmorillonites," Applied Clay Science, vol. 53, no. 4, pp. 642-645, 2011. DOI: