What Are Biofilters?
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Definition:
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Biofilters are technical appliances that use the biofiltration process to remove odorous compounds and other air pollutants, like volatile organic compounds (VOC), from waste air.
The name "biofilter" may be confusing, conjuring up images of normal filters, which simply separate pollutants from fluids or gases. In a biofilter, the pollutants are "consumed" by the microorganisms, and degraded into biomass, water and CO2. This allows the filter material to continually regenerate itself.
The term bio-catalyst or bio-reactor would therefore be more suitable, however the name biofilter is commonly accepted and used.
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