• 한국환경보건학회지
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• 제34권6호
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• pp.414-422
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• 2008

Methane is a potent greenhouse gas and methane emissions from landfill sites have been linked to global warming. In this study, LandGEM (Landfill Gas Emission Model) was applied to predict landfill gas quantity over time, and then this result was compared with the data surveyed on the site, Cheongju Megalo Landfill. LandGEM allows the input of site-specific values for methane generation rate (k) and potential methane generation capacity $L_o$, but in this study, k value of 0.04/yr and $L_o$ value of $100\;m^3$/ton were considered to be most appropriate for reflecting non-arid temperate region conventional landfilling like Cheongju Megalo Landfill. Relatively high discrepancies between the surveyed data and the predicted data about landfill gas seems to be derived from insufficient compaction of daily soil-cover, inefficient recovery of landfill gas and banning of direct landfilling of food waste in 2005. This study can be used for dissemination of information and increasing awareness about the benefits of recovering and utilizing LFG (landfill gas) and mitigating greenhouse gas emissions.

• 환경영향평가
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• 제17권5호
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• pp.321-330
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• 2008

Methane is a potent greenhouse gas and methane emissions from landfills have been linked to global warming. In this study, LandGEM (Landfill Gas Emission Model) was applied to predict landfill gas quantity over time, and then this result was compared with the data surveyed on the site, Cheongju Megalo Landfill. LandGEM allows the input of site-specific values for methane generation rate (k) and potential methane generation capacity $L_o$, but in this study, k value of 0.05/yr and $L_o$ value of $170m^3/Mg$ were considered to be most appropriate for reflecting non-arid temperate region conventional landfilling, Cheongju Megalo Landfill. High discrepancies between the surveyed data and the predicted data about landfill gas seems to be derived from insufficient compaction of daily soil-cover, inefficient recovery of landfill gas and banning of direct landfilling of food garbage waste in 2005. This study can be used for dissemination of information and increasing awareness about the benefits of recovering and utilizing LFG (landfill gas) and mitigating greenhouse gas emissions.

• 한국대기환경학회지
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• 제22권2호
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• pp.209-222
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• 2006

Odor problems brought about by deteriorating air quality occur in areas surrounding landfills because VOCs emissions from landfills are exhausted through surface soil and gas vents. Due to these factors, monitoring of VOCs emissions from landfills are essential. However, only a few studies have been carried out to assess VOCs emissions from landfills. A comprehensive approach to this problem is definitely warranted. In this study, we estimated BTEX emissions from 7 landfill sites in Korea using field experiments and LandGEM(Landfill Gas Emission Model), which is the USA EPA(Environmental Protection Agency)-recommended model for landfill gas emission estimation. For this purpose, we suitably modified the model's major input parameters $L_0$ and k according to 3 classes based on landfill scale after considering the characteristics of field experiments and LandGEM data. Consequently, we estimated VOCs emissions from landfills for cities, provinces and all of Korea alter modifying $L_0$ & k using LandGEM. Through the results of this study, we obtained essential basic data with respect to present conditions which will help us understand VOCs emissions from landfills in Korea.

• Coupled systems mechanics
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• 제12권6호
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• pp.531-537
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• 2023

Municipal solid waste landfills are unpredictable bioreactors which in cases of mishandling and bad supervision presents numerous risks. The key to municipal waste landfills is to approach them from the point of prevention of the possible consequences, which means using methods of organized waste disposal, and also utilizing landfill gas, as an unavoidable consequence with disposal of municipal solid waste with a high share of biodegradable organic matter. This paper presents an overview about problems of solid municipal waste management, type and composition of waste, and an overview of waste management condition. Further, the problem of landfill and landfill gasses is described with the calculation models of landfill production, as well as the use of the SWM GHG Calculator and LandGEM software on a specific example of gas production for the central zone at Sarajevo landfill "Smiljevici". Main focus of this thesis is the analysis of potentials of greenhouse gas emission reduction measures from the waste management. Overview of the best available techniques in waste management is presented as well as the methodology used for calculations. Scenarios of greenhouse gas emission reduction in waste management were defined so that emissions were calculated using the appropriate model. In the final section of the paper, its description of the problem of collection and utilization the landfill gas at the sanitary landfill "Smiljevici", and implementation of the system for landfill gas collection and solution suggestion for the gasification and exploitation of gas. Energy, environmental and economic benefits can be accomplished by utilizing municipal solid waste as fuel in industry and energy and moreover by utilizing energy generation from landfill gas, which this thesis emphasizes.

• 환경정책연구
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• 제7권1호
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• pp.1-29
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• 2008

환경부에서 추진하고 있는 "환경보건법" 이 2008년 2월 국회를 통과함에 따라 향후 법 제13조(건강영향 항목의 추가 평가 등) 제1항의 규정에 따라 사전환경성검토 또는 "환경영향평가법"에 따른 환경영향평가의 대상이 되는 행정계획 및 개발사업 중 대통령령으로 정하는 행정계획 및 개발사업에 대하여는 검토 평가 항목에 환경유해인자가 국민건강에 미치는 영향을 추가하여 평가하도록 하는 건강영향평가제도가 시행될 것으로 예상된다. 이에 본 연구에서는 주요 개발사업 중 인체 건강에 미칠 영향이 클 것으로 예상되는 매립장을 대상으로, 매립장에서 배출되는 매립가스의 호흡노출로 인한 인체위해성평가를 실시하여 향후 추진될 건강영향평가제도의 국내 적용 가능성을 파악하고자 하였다. 이를 위해 첫째, 미국 EPA의 매립장 배출가스 산출 추천모델인 LandGEM v. 3.02(Landfill Air Emissions Estimation Model v. 3.02)를 이용하여 매립장에서 배출되는 매립가스의 배출량을 산정하였고, 대기확산모델인 K-SCREEN을 수행하여 매립장 주변지역에 미치는 확산농도를 예측하였다. 마지막으로 K-SCREEN 모델을 통해 예측된 유해 오염물질의 확산농도를 토대로 발암성 물질에 대해서는 여러 노출변수들을 적용하여 인체노출량을 산출한 후 발암위해도 평가를 수행하였고 비발암성 물질에 대해서는 위해도지수를 계산하였다. 본 연구에서 수행한 매립가스의 호흡노출로 인한 인체위해성평가 기법은 향후 매립장 조성사업에 대한 건강영향평가 시행시 의사결정자들과 일반대중이 과학적 기반 위에서 합리적인 의사결정을 하는데 필요한 정보를 제공하는데 있어 적용이 가능할 것으로 사료된다. 또한, 본 연구에서 제시한 몇 가지 연구의 한계점들은 관련 연구자들의 체계적인 연구를 통해 극복할 필요가 있으며, 이러한 한계점들이 개선된다면 좀 더 신뢰성 있는 결과를 산출할 수 있을 것으로 판단된다.