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Can decontamination and reuse of N95 respirators during COVID-19 pandemic provide energy, environmental, and economic benefits?

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  • Tao, Yanqiu
  • You, Fengqi

Abstract

The widespread COVID-19 pandemic led to a shortage in the supply of N95 respirators in the United States until May 2021. In this study, we address the energy, environmental, and economic benefits of the decontamination-and-reuse of the N95 masks. Two popular decontamination methods, including dry heat and vapor hydrogen peroxide (VHP), are investigated in this study for their effective pathogen inactivation and favorable performance in preserving filtration efficiency and structural integrity of respirators. Two multiple reuse cases, under which the N95 masks are disinfected and used five times with the dry heat method and 20 times using the VHP method, are considered and compared with a single-use case. Compared to the single-use case, the dry heat-based multiple-use case reduces carbon footprint by 50% and cumulative energy demand (CED) by 17%, while the VHP-based case decreases carbon footprint by 67% and CED by 58%. The dry-heat-based and VHP-based multiple reuse cases also present environmental benefits in most of the other impact categories, primarily due to substituting new N95 respirators with decontaminated ones. Decontaminating and reusing respirators costs 77% and 89% less than the case of single-use and disposal. The sensitivity analysis results show that the geographical variation in the power grid and the times of respirator use are the most influential factors for carbon footprint and CED, respectively. The result also reaffirms the energy, environmental, and economic favorability of the decontamination and reuse of N95 respirators.

Suggested Citation

  • Tao, Yanqiu & You, Fengqi, 2021. "Can decontamination and reuse of N95 respirators during COVID-19 pandemic provide energy, environmental, and economic benefits?," Applied Energy, Elsevier, vol. 304(C).
    • Handle: RePEc:eee:appene:v:304:y:2021:i:c:s0306261921011727
    DOI: 10.1016/j.apenergy.2021.117848
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    References listed on IDEAS

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    Cited by:

    1. Tao Ran & Jianyong Pang & Jiuqun Zou, 2022. "An Emerging Solution for Medical Waste: Reuse of COVID-19 Protective Suit in Concrete," Sustainability, MDPI, vol. 14(16), pages 1-18, August.
    2. Zhao, Xiang & Klemeš, Jiří Jaromír & Fengqi You,, 2022. "Energy and environmental sustainability of waste personal protective equipment (PPE) treatment under COVID-19," Renewable and Sustainable Energy Reviews, Elsevier, vol. 153(C).

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