Removal of Iron Oxide from Indoor Air at a Subway Station Using a Vegetation Biofilter: A Case Study of Seoul, Korea

Recently, metallic particulate pollutants floating underground have been reported to negatively affect the human body. Thus, there is an urgent need for a public health policy pertaining to the air quality in subway stations. In this study, we investigated whether a vegetation biofilter is effective...

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Autores principales:	Tae-Han Kim, Boo-Hun Choi, Moon-Sung Kang, Han-Ju Lee
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	metallic particulate pollutant subway station vegetation biofilter iron oxide Meteorology. Climatology QC851-999
Acceso en línea:	https://doaj.org/article/4827b7f6833d4dbdad4d9653d6a45ab0
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spelling	oai:doaj.org-article:4827b7f6833d4dbdad4d9653d6a45ab02021-11-25T16:45:05ZRemoval of Iron Oxide from Indoor Air at a Subway Station Using a Vegetation Biofilter: A Case Study of Seoul, Korea10.3390/atmos121114632073-4433https://doaj.org/article/4827b7f6833d4dbdad4d9653d6a45ab02021-11-01T00:00:00Zhttps://www.mdpi.com/2073-4433/12/11/1463https://doaj.org/toc/2073-4433Recently, metallic particulate pollutants floating underground have been reported to negatively affect the human body. Thus, there is an urgent need for a public health policy pertaining to the air quality in subway stations. In this study, we investigated whether a vegetation biofilter is effective in reducing metal particle contaminants, especially iron oxide. After selecting a subway station, a vegetation biofilter system was installed, and samples were collected three times, at three intake areas and one exhaust area. The average weight ratio of the detected elements was calculated. The iron oxide reduction effect was evaluated using the Wilcoxon signed rank test. In the return air, C, O, and Fe were detected at 64.9, 27.3, and 5.2 wt.%, respectively; in the supply air, C, O, and Fe were detected at 67.2, 30.4, and 0.7 wt.%, respectively. The difference in the average Fe weight ratio was statistically significant. Air quality has a considerable effect on human health. We confirmed the possibility of reducing Fe in particulate matter using biofilters. However, we could not confirm whether the air quality was improved enough to not have a negative effect on the human body. This should be elucidated through follow-up studies.Tae-Han KimBoo-Hun ChoiMoon-Sung KangHan-Ju LeeMDPI AGarticlemetallic particulate pollutantsubway stationvegetation biofilteriron oxideMeteorology. ClimatologyQC851-999ENAtmosphere, Vol 12, Iss 1463, p 1463 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	metallic particulate pollutant subway station vegetation biofilter iron oxide Meteorology. Climatology QC851-999
spellingShingle	metallic particulate pollutant subway station vegetation biofilter iron oxide Meteorology. Climatology QC851-999 Tae-Han Kim Boo-Hun Choi Moon-Sung Kang Han-Ju Lee Removal of Iron Oxide from Indoor Air at a Subway Station Using a Vegetation Biofilter: A Case Study of Seoul, Korea
description	Recently, metallic particulate pollutants floating underground have been reported to negatively affect the human body. Thus, there is an urgent need for a public health policy pertaining to the air quality in subway stations. In this study, we investigated whether a vegetation biofilter is effective in reducing metal particle contaminants, especially iron oxide. After selecting a subway station, a vegetation biofilter system was installed, and samples were collected three times, at three intake areas and one exhaust area. The average weight ratio of the detected elements was calculated. The iron oxide reduction effect was evaluated using the Wilcoxon signed rank test. In the return air, C, O, and Fe were detected at 64.9, 27.3, and 5.2 wt.%, respectively; in the supply air, C, O, and Fe were detected at 67.2, 30.4, and 0.7 wt.%, respectively. The difference in the average Fe weight ratio was statistically significant. Air quality has a considerable effect on human health. We confirmed the possibility of reducing Fe in particulate matter using biofilters. However, we could not confirm whether the air quality was improved enough to not have a negative effect on the human body. This should be elucidated through follow-up studies.
format	article
author	Tae-Han Kim Boo-Hun Choi Moon-Sung Kang Han-Ju Lee
author_facet	Tae-Han Kim Boo-Hun Choi Moon-Sung Kang Han-Ju Lee
author_sort	Tae-Han Kim
title	Removal of Iron Oxide from Indoor Air at a Subway Station Using a Vegetation Biofilter: A Case Study of Seoul, Korea
title_short	Removal of Iron Oxide from Indoor Air at a Subway Station Using a Vegetation Biofilter: A Case Study of Seoul, Korea
title_full	Removal of Iron Oxide from Indoor Air at a Subway Station Using a Vegetation Biofilter: A Case Study of Seoul, Korea
title_fullStr	Removal of Iron Oxide from Indoor Air at a Subway Station Using a Vegetation Biofilter: A Case Study of Seoul, Korea
title_full_unstemmed	Removal of Iron Oxide from Indoor Air at a Subway Station Using a Vegetation Biofilter: A Case Study of Seoul, Korea
title_sort	removal of iron oxide from indoor air at a subway station using a vegetation biofilter: a case study of seoul, korea
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/4827b7f6833d4dbdad4d9653d6a45ab0
work_keys_str_mv	AT taehankim removalofironoxidefromindoorairatasubwaystationusingavegetationbiofilteracasestudyofseoulkorea AT boohunchoi removalofironoxidefromindoorairatasubwaystationusingavegetationbiofilteracasestudyofseoulkorea AT moonsungkang removalofironoxidefromindoorairatasubwaystationusingavegetationbiofilteracasestudyofseoulkorea AT hanjulee removalofironoxidefromindoorairatasubwaystationusingavegetationbiofilteracasestudyofseoulkorea
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Removal of Iron Oxide from Indoor Air at a Subway Station Using a Vegetation Biofilter: A Case Study of Seoul, Korea

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