3.3.2 Improvement of Air Quality
Chemical particles such as NO2, SO2, VOC, and CO are harmful to human body.
The emission of such particles has increased around UBC in the past decade (Ibanez, 2010) The vertical garden can filter these hazardous gases by capturing airborne contaminants and depositing them on leaf surfaces.
On the other hand, the overall CO2 emission of the building can also be deducted as the vertical garden absorbs CO2.