Recirculated room air purification

Chemical apparatus and process disinfecting – deodorizing – preser – Process disinfecting – preserving – deodorizing – or sterilizing – A gas is substance acted upon

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47 66, 47 71, 422 5, 422124, A61L 900, A61L 902, A61L 912

Patent

active

051300915

ABSTRACT:
Treatment of recirculating room air with living green plants in air-permeable potting medium, so as to reduce the air content of gaseous and particulate liquid and/or solid contaminants while the air remains in the recirculation path. The air is conducted from and to a collection location to and from the treating location, where the air is passed upward through the potting soil and past the plant roots, out therefrom and past the plant leaves, and back to the collection location. The treatment location may be located at the entrance of the air into the room, at the exhaust of the air from the room, or elsewhere. Continuous or intermittent treatment of room air in such manner through such apparatus results in prompt and effective removal of cigarette smoke and other contaminants, at the same time rendering the room atmosphere more healthful for the persons therein by purifying the air they necessarily are breathing.

REFERENCES:
patent: 4732591 (1988-03-01), Tujisawa et al.
patent: 4975251 (1990-12-01), Saceman
patent: 5078972 (1992-01-01), Saceman
Houseplants, Indoor Pollutants, and Allergic Reactions, B. C. Wolverton, NASA Technology Labs., MS 395 Dec. 29, 1986.

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