Applicability of on-site disinfection of personal protective equipment by ozone gas

On-site disinfection H1-99 Ozone gas Science (General) Pandemic 0211 other engineering and technologies 02 engineering and technology 01 natural sciences 3. Good health Social sciences (General) Q1-390 13. Climate action Personal protective equipment 0103 physical sciences Research Article
DOI: 10.1016/j.heliyon.2023.e13360 Publication Date: 2023-02-03T02:54:06Z
ABSTRACT
On-site disinfection techniques are beneficial during a pandemic when there is a marked shortage of personal protective equipment (PPE), as experienced during the coronavirus disease 2019 outbreak. Ozone gas has been considered an alternative on-site disinfectant during a pandemic because it has antimicrobial activities, can be produced from air by electricity without the need for storage, and can be easily deactivated after use. However, ozone gas might become distributed at the lower layer because it has a larger molecular weight than air. This study aimed to reveal the applicability of ozone gas for the on-site disinfection of PPE. The lockers meant for changing dresses were used as ozone gas exposure boxes, and the distribution of ozone was assayed. Considering that the determined ozone levels were not consistent in the types of ozone analysers, we studied the chemical and biological activities of ozone, which were evenly detected in the locker. The gown in the locker was also uniformly exposed to ozone. Results showed that ozone gas could be used for the on-site disinfection of PPE in a closed box, such as a locker. This finding is valuable during a pandemic when PPE is in short supply.
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