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PHYTOREMEDIATION OF VOCS FROM INDOOR AIR BY ORNAMENTAL POTTED PLANTS: A PILOT STUDY USING A PALM SPECIES UNDER THE CONTROLLED ENVIRONMENT
Teiri, H., H. Pourzamani, and Y. Hajizadeh.
Chemosphere 197:375-381(2018)

Researchers installed a common interior plant from the palm species Chamaedorea elegans inside a controlled environment chamber. Contribution of the entire plant, growing media, and roots toward formaldehyde removal were evaluated by continuous introduction of different concentrations of formaldehyde into the chamber (0.66-16.4 mg/m3), each over a 48-h period. The plant removed formaldehyde from polluted air by 65-100%, depending on the inlet concentrations, with sufficient exposure. A maximum elimination capacity of 1.47 mg/m2/h was achieved with an inlet formaldehyde concentration of 14.6 mg/m3. The removal ratio of the areal portion to pot soil and roots was 2.45:1 (71%:29%). The plants removed more formaldehyde in light rather than in a dark environment. Concentrations up to 16.4 mg/m3 were not high enough to affect plant growth, although a trivial decrease in chlorophyll, carotenoid, and water content of treated plants was observed compared to control plants. The palm species tested showed high tolerance and good potential in formaldehyde removal from interior environments. See other results of the research by these authors based upon the use of a common fern species at https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6106135/.



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