Journal of Environmental Impact Assessment 2021 KCI Impact Factor : 0.74

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pISSN : 1225-7184

http://journal.kci.go.kr/kseia
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2022, Vol.31, No.5

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  • 1.

    A Study on Improvement of Air Quality Dispersion Model Application Method in Environmental Impact Assessment (I) – Focusing on AERMOD Meteorological Preprocessor –

    Suhyang Kim , Sun-Hwan Park , Jongseok Tak and 3 other persons | 2022, 31(5) | pp.271~285 | number of Cited : 0
    Abstract PDF
    The AERMET, the AERMOD meteorological preprocessing program, mainly used for environmental impact assessment and Integrated Environmental Permit System (IEPS) in Korea, has not considered the land covers characterasitics, and used only the past meteorological data format CD-144. In this study, two results of AERMET application considering CD-144 format and ISHD format, being used internationally, were compared. Also, the atmospheric dispersion characteristics were analyzed with consideration of land cover. In the case of considered the CD-144 format, the actual wind speed was not taken into account in the weak wind (0.6~0.9m/s) and other wind speed due to the unit conversion problem. The predicted concentration considering land cover data was up to 387% larger depending on the topographic and emission conditions than without consideration of land cover. In conclusion, when using meteorological preprocessing program in AERMOD modelling, AERMET, with ISHD format, land cover characterasitics in the area should be considered.
  • 2.

    A Study on the Distribution and Reduction Method of Indoor Radon Concentration in Daejeon Metropolitan City

    Yong-Chul Jang , Jaehwan Yang , Hongkyoung Kim and 4 other persons | 2022, 31(5) | pp.286~295 | number of Cited : 0
    Abstract PDF
    In this study, the concentration distribution of indoor radon in Daejeon Metropolitan City was investigated and the reduction efficiency was evaluated by applying the radon reduction methods. Based on the results of the National Institute of Environmental Research, indoor radon measurements were conducted on 24 selected houses, and the average value of District A was 261 Bq/m3, far exceeding the standard, and even in the same house, indoor radon concentration was affected by measurement point and time. In the case of eight houses that applied the soil venting method to reduce radon, the indoorradon level was significantly lowerthan the standard value, and the average reduction efficiency was also around 55%, indicating a good reduction effect. In addition, the average reduction efficiency was around 90% in the two houses that carried out the shielding method, showing the very excellent effect of the indoorradon reduction. Even if the same reduction method is applied when reducing radon, the reduction efficiency may vary depending on various factors such as the structure of the building, the frequency of ventilation, and the season, so it is necessary to accurately evaluate the effectiveness of the reduction method in the future. Based on this, it is necessary to establish indoor radon management measures in Daejeon Metropolitan City to reduce human harm caused by radon exposure.
  • 3.

    Transfer of Arsenic and Heavy Metals Existed as Acid Extractable and Reducible Forms from Flooded Soils to Rice Plant

    IlHa Koh , Ji Won Hyun , Jungeun Kim | 2022, 31(5) | pp.296~309 | number of Cited : 0
    Abstract PDF
    This study investigated the mobility of inorganic elements (As, Cd, Pb, and Zn) that existed as acid extractable and reducible forms in flooded soils with a pot experiment involving rice cultivation. In general, it is known that soil inorganic elements that existed as an acid extractable form which includes exchangeable, carbonates, non-specifically sorbed, and specifically sorbed have mobility. However, the result of the experiment revealed that each inorganic elements of rice roots grown from flooded soils had different characteristics. The concentrations of Arsenic existed as both forms and the concentrations of cadmium and lead existed as a reducible form in the soils showed a high causal relationship with the concentrations of those elements in the roots of rice plants. The concentrations of zinc, an essential plant element, didn’t show a causal relationship. Therefore it is necessary to consider the soil’s environmental characteristics such as drained/flooded condition, oxidation/reduction condition, etc. for the mobility assessment of inorganic elements. The concentrations of the reducible form of arsenic, cadmium, and lead in flooded environment such as a paddy field should be also considered because the mobility of these elements combined with Fe/Mn increases in the reduction condition.
  • 4.

    A Study on the Perception Change of Bats after COVID-19 by Social Media Data Analysis

    Lee Jukyung , Byeori Kim , Sun-Sook Kim | 2022, 31(5) | pp.310~320 | number of Cited : 0
    Abstract PDF
    This study aimed to identify the change in the public perception of “bats” after the outbreak of the coronavirus (COVID-19) infection. Text mining and network analysis were conducted for blog posts, the largest social network in Korea. We collected 9,241 Naver blog posts from 2019 to 2020 just before the outbreak of COVID-19 in Korea. The data were analyzed with Python and NetMiner 4.3.2, and the public’s perception of bats was examined through the relationship of keywords by period. Findings indicated that the frequency of bat keywords in 2020 increased more than 25 times compared to 2019, and the centrality value increased more than three times. The perception of bats changed before and after the outbreak of the pandemic. Prior to COVID-19, bats were highly recognized as a species of wildlife while in the first half of 2020, they were strongly considered as a threat to human society in relation to infectious diseases and health. In the second half of 2020, it was confirmed that the area of interest in bats expanded as the proportion of ecological and cultural types ofresearch increased. This study seeks to contribute to the expansion and direction of future research in bats by understanding the public’s interest in the potential impact of the species as disease hosts post the COVID-19 pandemic.
  • 5.

    Human Health Risk Assessment of BTEX from Daesan Petrochemical Industrial Complex

    Jihyeong Lee , Yong-Chul Jang , Kwangsoo Cheon and 1 other persons | 2022, 31(5) | pp.321~333 | number of Cited : 0
    Abstract PDF
    In this study, the concentration and distribution characteristics of BTEX (benzene toluene, ethylbenzene, and xylene) emitted from Daesan Petrochemical Industrial Complex were examined to determine their potential hazards to local residents. Residents living nearby the complex areas may be exposed to the chemicals through various media (air, water, and soil), especially by air. This study evaluated human health risks by inhalation using both deterministic and probabilistic risk assessment approaches. As a result of the deterministic risk assessment, the non-cancer risk was much lower than the regulation limit of hazard index (HI 1.0) for all the points. However, in case of cancer risk evaluation, it was found that the risk of excess cancer for benzene at point A located in the industrial complex was 2.28×10-6 , which slightly exceeded the standard regulatory limit of 1.0×10-6 . In addition, the probabilistic risk assessment revealed that the percentile exceeding the standard of 1.0×10-6 was found to be 45.3%. The sensitivity analysis showed that exposure time (ET) had the greatest impact on the results. Based on the risk assessment study, it implied that ethylbenzene, toluene, and xylene had little adverse effects on potential human exposure, but benzene often exceeded the cancer risk standard (1.0×10-6 ). Further studies on extensive VOCs monitoring are needed to evaluate the potential risks of industrial complex areas.
  • 6.

    Evaluation of Internal through Analysis of Airflow and Ventilation of Coal Storage Shed

    Hyunjoung Jo , Lee, Jin-Hong | 2022, 31(5) | pp.334~342 | number of Cited : 0
    Abstract PDF
    The stringent air environment conservation act forced to build an indoor dome for coal storage. However , it causes some problems due to accumulation of fly ash and harmful substances inside. To solve this problem, this study analyzed the pattern of internal airflow and the amount of ventilation for an indoor coal yard. Overall, the airflow inside the indoor coal yard tended to move to the southwest facing the mountain. In addition, sea-breeze was blowing from the northern louver window facing the sea, where airflow was flowing in. The total flow rate flowing into the indoor coal yard was 918,691 m3/h, and the number of natural ventilation per hour was 0.6 times. Therefore, it is proposed to install a forced ventilation device at the location where internal air flow is concentrated.
  • 7.

    Development of Indicators to Create a Healing Environment in Disabled Residential

    Hyun-Jung Yeu , Heeseung Yang | 2022, 31(5) | pp.343~358 | number of Cited : 0
    Abstract PDF
    Due to the recent increase in the disabled population and welfare paradigm, the government is focusing on green welfare and environmental welfare to improve the living environment of the disabled, including the enactment of basic laws and convenience promotion laws. Accordingly, green environmental welfare for the disabled is supported in policy, but there are no evaluation indicators for the green welfare space and healing environment created. Therefore, this study divided the healing environment into physical, psychological, and social aspects, and conducted research using expert FGI to present evaluation indicators that can determine whether spatial roles and functions are appropriate. As a result of the study, the final 51 healing environment evaluation items were derived from 26 physical aspects evaluation items, 14 psychological aspects evaluation items, and 11 social aspects evaluation items. Evaluation indicators derived from this study can be used to evaluate the healing environment created in disabled residential facilities, and can be used as basic data in the planning stage of the healing environment to be created in the future.