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Reducing the Effectiveness of Ward Particulate Matter, Bacteria and Influenza Virus by Combining Two Complementary Air Purifiers

Author

Listed:
  • Bingliang Zhou

    (Guangdong Provincial Key Laboratory of Tropical Disease Research, Department of Microbiology, School of Public Health, Southern Medical University, Guangzhou 510515, China
    These authors contributed equally to this work.)

  • Tiantian Liu

    (School of Public Health, Guangdong Pharmaceutical University, Guangzhou 510310, China
    These authors contributed equally to this work.)

  • Siqi Yi

    (State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, First Affiliated Hospital of Guangzhou Medical University, Guangzhou Medical University, Guangzhou 510180, China)

  • Yuanyuan Huang

    (Guangdong Provincial Key Laboratory of Tropical Disease Research, Department of Microbiology, School of Public Health, Southern Medical University, Guangzhou 510515, China)

  • Yubing Guo

    (State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, First Affiliated Hospital of Guangzhou Medical University, Guangzhou Medical University, Guangzhou 510180, China)

  • Si Huang

    (State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, First Affiliated Hospital of Guangzhou Medical University, Guangzhou Medical University, Guangzhou 510180, China)

  • Chengxing Zhou

    (Guangdong Provincial Key Laboratory of Tropical Disease Research, Department of Microbiology, School of Public Health, Southern Medical University, Guangzhou 510515, China)

  • Rong Zhou

    (State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, Guangzhou Institute of Respiratory Health, First Affiliated Hospital of Guangzhou Medical University, Guangzhou Medical University, Guangzhou 510180, China)

  • Hong Cao

    (Guangdong Provincial Key Laboratory of Tropical Disease Research, Department of Microbiology, School of Public Health, Southern Medical University, Guangzhou 510515, China)

Abstract

Air purifiers should pay much attention to hospital-associated infections, but the role of a single air purifier is limited. The goal of this study was to evaluate the effectiveness of the combined application of the nonequilibrium positive and negative oxygen ion purifier (PNOI) and the high-efficiency particulate air filter (HEPA) on a complex, polluted environment. Two of the better performing purifiers were selected before the study. The efficacy of their use alone and in combination for purification of cigarette particulate matter (PM), Staphylococcus albicans, and influenza virus were then evaluated under a simulated contaminated ward. PNAI and HEPA alone are deficient. However, when they were combined, they achieved 98.44%, 99.75%, and 100% 30 min purification rates for cigarette PM, S. albus , and influenza virus, respectively. The purification of pollution of various particle sizes and positions was optimized and reduced differentials, and a subset of airborne influenza viruses is inactivated. Furthermore, they were superior to ultraviolet disinfection for microbial purification in air. This work demonstrates the strong purification capability of the combined application of these two air purifiers for complex air pollution, which provides a new idea for infection control in medical institutions.

Suggested Citation

  • Bingliang Zhou & Tiantian Liu & Siqi Yi & Yuanyuan Huang & Yubing Guo & Si Huang & Chengxing Zhou & Rong Zhou & Hong Cao, 2022. "Reducing the Effectiveness of Ward Particulate Matter, Bacteria and Influenza Virus by Combining Two Complementary Air Purifiers," IJERPH, MDPI, vol. 19(16), pages 1-12, August.
    • Handle: RePEc:gam:jijerp:v:19:y:2022:i:16:p:10446-:d:894739
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    References listed on IDEAS

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    1. Minji Jung & Woong June Chung & Minki Sung & Seongmin Jo & Jinkwan Hong, 2022. "Analysis of Infection Transmission Routes through Exhaled Breath and Cough Particle Dispersion in a General Hospital," IJERPH, MDPI, vol. 19(5), pages 1-14, February.
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