This question on the Gardening SO site suggests that plants can be used to clean the air within a home or office environment.
I know of the research done by NASA on indoor plants which can clean/reduce certain pollutants in the air. [...] According to the above research, certain plants will filter 3 kinds of pollutants: Benzene, Trichloroethylene and Formaldehyde.
Has there been any solid research done into the effectiveness of plants to be able to process air within a minimal environment such as a house (or a bank vault)?
Is there any evidence to suggest that a certain number of plants within a certain minimal sealed space could completely recycle the air so that it could continuously be breathed? or does this need to be done on a much larger scale?
Is there a simple formula that could be used at home e.g. Six medium sized plants per individual in a house?