Which method is used to treat outdoor air with ozone before it enters indoor spaces?

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Multiple Choice

Which method is used to treat outdoor air with ozone before it enters indoor spaces?

Explanation:
Gas-phase filtration removes gaseous contaminants from air streams, using sorbent media that adsorbs gas molecules as air passes through. Ozone is a gas, so the way to reduce its levels before outdoor air enters indoors is to run the air through a gas-phase filtration system, typically employing an adsorbent like activated carbon. This targets ozone and similar pollutants directly in the gas phase, rather than trying to capture them with a system designed for particulates or microorganisms. UVGI is for inactivating microbes with UV light and doesn’t remove gases, and filtration aimed at particles (HEPA) won’t lower ozone levels.

Gas-phase filtration removes gaseous contaminants from air streams, using sorbent media that adsorbs gas molecules as air passes through. Ozone is a gas, so the way to reduce its levels before outdoor air enters indoors is to run the air through a gas-phase filtration system, typically employing an adsorbent like activated carbon. This targets ozone and similar pollutants directly in the gas phase, rather than trying to capture them with a system designed for particulates or microorganisms. UVGI is for inactivating microbes with UV light and doesn’t remove gases, and filtration aimed at particles (HEPA) won’t lower ozone levels.

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