Removal of fine particulate matter (PM2.5) via atmospheric humidity caused by evapotranspiration

Ryu, Jeongeun; Kim, Jeong Jae; Byeon, Hyeokjun; Go, Taesik; Lee, Sang Joon

doi:10.1016/j.envpol.2018.11.004

Cited by 62 publications

(31 citation statements)

References 39 publications

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“…This is because the plant takes up a certain volume of the chamber, thereby reducing the distance between the dust particles and adsorbable surface (Ryu et al, 2019). As the fine particulate matter floats in the chamber, some sink and some is adsorbed on the plant leaves, thereby reducing particulate matter concentration within the chamber.…”

Section: Particulate Matter Reduction Potential Of Plantsmentioning

confidence: 99%

Assessment of the Particulate Matter Reduction Potential of Climbing Plants on Green Walls for Air Quality Management

Jeong

Kim

Han

et al. 2021

J. People Plants Environ

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Background and objective: To improve air quality, particulate matter (PM) can be reduced using green infrastructure. Therefore, in this study, we aimed to determine the particulate matter reduction potential of climbing plants used for green walls, an element of vertical green infrastructure. Methods: A sealed chamber with controlled environmental variables was used to assess the PM reduction level caused by climbing plants. PM concentration in the plant chamber was measured after two and four hours of PM exposure, and the reduction potential was assessed based on the leaf area. Results: Compared to the empty chamber (Control), the PM reduction speed per hour was higher in the plant chamber, which confirmed that climbing plants contribute to the reduction of PM in the air. The PM reduction speed immediately after exposure in the plant chamber was high, but this slowed over time. Additionally, PM has been continuously reduced in plants with large leaves. As a result of calculating the particulate matter reduction level based on leaf area, it was found that there was a difference by particle size. Actinidia arguta, Parthenocissus tricuspidata, Trachelospermum asiaticum, and Euonymus fortunei var. radicans showed a high reduction effect. The trichomes on the leaf surface of Trachelospermum asiaticum were found to affect PM reduction. Conclusion: PM adsorption on the leaf surface is an important factor in reducing its concentration. It was possible to compare different plants by quantifying the amount of PM reduction during a fixed time period. These results can be used as the basic data to select the plant species suitable for urban green walls in terms of PM reduction.

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Section: Particulate Matter Reduction Potential Of Plantsmentioning

confidence: 99%

Assessment of the Particulate Matter Reduction Potential of Climbing Plants on Green Walls for Air Quality Management

Jeong

Kim

Han

et al. 2021

J. People Plants Environ

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“…The results showed that wood combustion had made high contributions to the organic carbon (OC), and in some rural areas, the contribution rate of wood combustion to OC could be as high as 90% in winters; the contribution of terrestrial protozoa organic components was also significant in summers and autumns, with a monthly PM 2.5 contribution rate of 4.5-9.5% [27]. Ryu et al (2019) studied the PM (Particulate Matter) removal effect of plant evapotranspiration by using the PM removal performance of five plants and the relative humidity (RH) in a closed chamber as control parameters. The results showed that under effective transpiration, honeysuckle had higher efficiency for aerosol PM 2.5 removal [28].…”

Section: Of 18mentioning

confidence: 99%

“…Ryu et al (2019) studied the PM (Particulate Matter) removal effect of plant evapotranspiration by using the PM removal performance of five plants and the relative humidity (RH) in a closed chamber as control parameters. The results showed that under effective transpiration, honeysuckle had higher efficiency for aerosol PM 2.5 removal [28].…”

Section: Of 18mentioning

confidence: 99%

Primary Pollutants and Air Quality Analysis for Urban Air in China: Evidence from Shanghai

Yan

Sun

et al. 2019

Sustainability

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In recent years, China's urban air pollution has caused widespread concern in the academic world. As one of China's economic and financial centers and one of the most densely populated cities, Shanghai ranks among the top in China in terms of per capita energy consumption per unit area. Based on the Shanghai Energy Statistical Yearbook and Shanghai Air Pollution Statistics, we have systematically analyzed Shanghai’s atmospheric pollutants from three aspects: Primary pollutants, pollutants changing trends, and fine particulate matter. The comprehensive pollution index analysis method, the grey correlation analysis method, and the Euclid approach degree method are used to evaluate and analyze the air quality in Shanghai. The results have shown that Shanghai's primary pollutants are PM2.5 and O3, and the most serious air pollution happens during the first half of the year, particularly in the winter. This is because it is the peak period of industrial energy use, and residential heating will also lead to an increase in energy consumption. Furthermore, by studying the particulate pollutants of PM2.5 and PM10, we clearly disclosed the linear correlation between PM2.5 and PM10 concentrations in Shanghai which varies seasonally.

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“…Given that atmospheric PM particles can be adsorbed to the plant surfaces and into the plant tissues, some plant species have been utilized for air purifying or biomonitoring purposes 6 . For example, Tillandsia usneoides , used for purifying indoor air, has densely distributed trichomes on its surface and captures both incense and solid PM particles effectively under the flow condition due to the increased surface area by trichome arrays 7 .…”

Section: Introductionmentioning

confidence: 99%

Adsorption of nanoparticles suspended in a drop on a leaf surface of Perilla frutescens and their infiltration through stomatal pathway

Seo

Kim

et al. 2021

Sci Rep

Self Cite

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Particulate matter (PM) has become a severe environmental issue, and ultrafine PM particles such as PM2.5 or PM1 can cause various complications and respiratory diseases to human beings. In particular, heavy metals contained in PM particles can contaminate edible plants; for example, plant leaves are exposed to PM particle-laden raindrops. The contaminated edible plants can injure the human health by ingestion, so a detailed understanding on the accumulation of PM particles inside edible plants is essential. In this study, we investigate the infiltration of PM particles in plant tissues with a hypothesis that ultrafine PM particles are absorbed through stomatal pathways. As an edible test plant, Perilla frutescens is selected. Drops of gold nanoparticle (AuNP) suspension are deposited on a leaf of P. frutescens to simulate the scenario where PM particle-laden raindrops fall on patulous stomata of the test plant. To examine AuNP adsorption on the P. frutescens foliar surface and diffusional AuNP absorption through stomatal apertures, we investigate three physical dynamics of AuNPs suspended in a sessile drop: sedimentation, evaporation-driven convective flow, and shrinkage of the drop interface. Quantitative information on the 3D spatial distribution of AuNPs in plant tissues was measured by X-ray imaging and two-photon excitation microscopy.

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Removal of fine particulate matter (PM2.5) via atmospheric humidity caused by evapotranspiration

Cited by 62 publications

References 39 publications

Assessment of the Particulate Matter Reduction Potential of Climbing Plants on Green Walls for Air Quality Management

Assessment of the Particulate Matter Reduction Potential of Climbing Plants on Green Walls for Air Quality Management

Primary Pollutants and Air Quality Analysis for Urban Air in China: Evidence from Shanghai

Adsorption of nanoparticles suspended in a drop on a leaf surface of Perilla frutescens and their infiltration through stomatal pathway

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