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A Study on Plant Effects on Decontamination of Polluted Indoor Air with Formaldehyde  

Park, Soyoung (OIKOS Co., Ltd.)
Kim, Jeoung (Suwon University)
Jang, Young-Kee (Suwon University)
Sung, Kijune (Pukyong National University)
Publication Information
Journal of Environmental Impact Assessment / v.14, no.4, 2005 , pp. 147-155 More about this Journal
Abstract
This study was designed to investigate the effect of plant as a botanical air purification on the indoor pollution by formaldehyde. Three indoor plants such as Dracaena marhginata, Spathiphyllum and Dracaena reflexa, were placed in the artificially contaminated reactor under laboratory condition. Both plant and soil effects on removal of formaldehyde from contaminated indoor air were observed. Reductions in the formaldehyde levels appeared to have been associated with soil medium factors as well as plant factors. The effect of soil on formaldehyde reduction was high in the early stage of the experiment and the results suggest that sorption could be more important factor than microbial degradation in the initial dissipation of contaminants in the soil. It was suggested that the effect of plant on formaldehyde reduction might be related to the plant species, total leaf surface area of plant, degree of contribution of soil medium, and exposed concentration level. The results of this study showed that air purification using plants is an effective means of reduction on indoor formaldehyde level, though, utilization of soil media with high sorption capacity and/or supplementary purifying aids were also suggested when the source is continuous or exposed concentration level is high.
Keywords
indoor air pollution; formaldehyde; indoor plant; air purification; total leaf area; sorption effect;
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