US Patent 10477779 Botanical air filtration system and method

A system and process for filtering air by removing pollutants from the air with living plants. The system includes an enclosure, a wall within the enclosure on which living plants are supported and grow in one or more horizontal plant beds defining vertical tiers along the wall, an irrigation system for watering the plants, and a lighting system for simulating sunlight. Air moving through the enclosure flows adjacent leaves of the plants, through a growth media in the plant bed, and then out of the enclosure.