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"A Living Laboratory: Biological Air Filtering by Drexel's Five-Story Wall of Plants"

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Published on Jun 20, 2012

The showpiece of the atrium in Drexel University's Papadakis Integrated Sciences Building is a vertical wall of living plants, 20 feet wide, rising five stories (75 feet) in height -- the largest such wall in North America and the only one at a U.S. university. But the biowall is not just for show. It is an active living filter that removes volatile organic compounds (VOCs) from the air. Scientists and students at Drexel are studying the biowall and the plant and microbe communities responsible for its air filtration properties to get a better understanding of how it works.

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