Green Technology

Drexel University’s biowall is huge - 22-foot wide and 80-foot tall.  The wall has 12 varieties of tropical plant that grow without soil.

Biowalls can improve indoor air quality and act as a biofilter.  “ … bacteria and fungi [in the roots] utilize harmful airborne pollutants as food, breaking down volatile organic compounds (VOCs) … “  The HVAC system draws air and therefor pollutants through the wall  and the resulting purified air is then distributed via the HVAC system.

Biowalls are efficient at cleaning pollutants from the air.  Biowalls “ … similar to … Drexel’s … are capable of removing 60-90% of pollutants with a single pass …. “

Via: Drexel University  LINK