Phytoremediation of volatile organic compounds by indoor plants: a review
2018
Kim, K.J., National Institute of Horticultural and Herbal Science, Rural Development Administration, Wanju, Republic of Korea | Md. Khalekuzzaman, University of Rajshahi, Rajshahi, Bangladesh | Suh, J.N., National Institute of Horticultural and Herbal Science, Rural Development Administration, Wanju, Republic of Korea | Kim, H.J., National Institute of Horticultural and Herbal Science, Rural Development Administration, Wanju, Republic of Korea | Charlotte Shagol, National Institute of Horticultural and Herbal Science, Rural Development Administration, Wanju, Republic of Korea | Kim, H.H., Pyeongtaek University, Pyeongtaek, Republic of Korea | Kim, H.J., Konkuk University, Seoul, Republic of Korea
Air quality in homes, ofces, and other indoor spaces has become a major health, economic, and social concern. A plantbased removal system for volatile organic compounds (VOCs) appears to be a low-cost, environment-friendly solution for improving indoor air quality. This review presents and assesses VOC removal mechanisms that use plants and their associated microorganisms as well as the factors that infuence the rate and efciency of VOC removal. To increase removal efciency, it is important to have a thorough understanding of the mechanisms of VOC degradation by plants and their associated microorganisms. The potential of plants and their associated microorganisms, whether present in pots or forced-air systems, to remove VOCs from indoor environments have been supported by a number of studies. Variations in removal efciency depend on the plant species used, the chemical properties of the volatiles in question, and a cross-section of other internal and external factors. It is thus critical to select the right plants and use methods that refect in vivo conditions. Indoor plants with superior air-purifying abilities have been extensively studied; however, the low rates of VOC removal efciency in interior environments entail the need of more studies. For instance, factors that modulate VOC removal by plants, such as air circulation rate, light intensity, moisture status, and season need to be explored. Improving the efciency of plants and their associated microorganisms for VOC remediation of indoor air is necessary to ensure sustainable and healthy indoor environments.
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