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- High destruction efficiencies
- No chemical additives
- No residual ozone
- Low energy requirements
- Complete oxidation of organics
- Works in humid conditions
- Long service life
- Low maintenance requirements
- Negligible pressure drop in duct system
- Easy to install
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| UNDERSTANDING PCO |
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| Photocatalytic Oxidation is the process of irradiating with ultraviolet light of less than 385 nanometers a semiconductor photocatalyst. When the photocatalyst is irradiated, the band gap energy is exceeded and an electron is promoted from the valence band to the conductive band. The resultant electron-hole pair participates in chemical reactions and generates hydroxyl radicals and super-oxide ions that are highly reactive and will oxidize volatile organic compounds, bacteria, viruses, and fungi. These reactions only take place on the surface of the catalyst |
Simply put, the pollutant is destroyed in a three-step process:
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First, the pollutant adsorbs to the surface of the catalyst. |
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The pollutant and catalyst are exposed to the photons of UV light. |
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The light energy activates the catalyst, which breaks down the pollutant into nontoxic products. |
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