Green Roofs - Living Architecture Monitor - Winter 2011 - (Page 25)
TABLE 1
LABORATORY AND CASE STUDIES ON THE PERFORMANCE OF INDOOR AIR BIOFILTERS
CONTAMINANT OUTCOME SOURCE OF DATA
Volatile Organic Compounds (VOCs)
A space maintained without outside air had air quality as good or better than similar spaces maintained by traditional ventilation Effluent from the biofilter had the same quality as outside air, with up to 70% VOCs removed
Darlington et al. 2000
Darlington 2005 Darlington et al. 2000
Formaldehyde
Space maintained with a biofilter had lower formaldehyde concentrations than spaces maintained by traditional means The biofilter lowered concentrations to background levels
Odor Spores
Odor panel studies revealed almost complete removal (80% removal) Areas treated by biofilter did not exhibit elevated counts Biofilter slightly reduced moulds and bacteria counts
Internal newsletter Mallany 2000 Smith 2006 Liddy 2007 Smith 2006 Liddy 2007
Dust
Biofilter reduced inhalable dust concentration No/little impact on respirable dust
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Table of Contents for the Digital Edition of Green Roofs - Living Architecture Monitor - Winter 2011