Plasma generated ozone and reactive oxygen species for point of use PPE decontamination system

Author:

Huang MinORCID,Hasan Md KamrulORCID,Rathore Kavita,Hil Baky Md Abdullah,Lassalle JohnORCID,Kraus Jamie,Burnette Matthew,Campbell Christopher,Wang Kunpeng,Jemison Howard,Pillai Suresh,Pharr Matt,Staack David

Abstract

This paper reports a plasma reactive oxygen species (ROS) method for decontamination of PPE (N95 respirators and gowns) using a surface DBD source to meet the increased need of PPE due to the COVID-19 pandemic. A system is presented consisting of a mobile trailer (35 m3) along with several Dielectric barrier discharge sources installed for generating a plasma ROS level to achieve viral decontamination. The plasma ROS treated respirators were evaluated at the CDC NPPTL, and additional PPE specimens and material functionality testing were performed at Texas A&M. The effects of decontamination on the performance of respirators were tested using a modified version of the NIOSH Standard Test Procedure TEB-APR-STP-0059 to determine particulate filtration efficiency. The treated Prestige Ameritech and BYD brand N95 respirators show filtration efficiencies greater than 95% and maintain their integrity. The overall mechanical and functionality tests for plasma ROS treated PPE show no significant variations.

Publisher

Public Library of Science (PLoS)

Subject

Multidisciplinary

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