This video helps to clear up the misunderstanding created by the widespread publication of the Kamal Meattle TED conference presentation.
This plant room is part of an air cleaning system in the Paharpur Business Center (PBC) in Delhi, India. Along with the plant room, the system includes an air washer and duct filtration.
As you can see the plants are not scattered throughout the building as one might incorrectly assume from the slide presentation. They are not employee personal plants.
Grouping a large quantity of plants (over 1,200 in this case) in one location creates the ability to remove a significant amount of volatile organic compounds (VOCs) from the indoor air.
A living plant wall is another way of doing this. Canada has been a leader in this technology.
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