Economic and Environmental Geology (자원환경지질)

The Korean Society of Economic and Environmental Geology (대한자원환경지질학회)
권호 표지

Geochemical Concept and Technical Development of Geological $CO_2$ Sequestration for Reduction of $CO_2$

이산화탄소 저감을 위한 지중처분기술의 지구화학적 개념과 연구개발 동향

  • Chae, Gi-Tak (Department of Earth and Environmental Sciences and the Environmental Geophere Research Lab (EGRL), Korea University) ;
  • Yun, Seong-Taek (Department of Earth and Environmental Sciences and the Environmental Geophere Research Lab (EGRL), Korea University) ;
  • Choi, Byoug-Youg (Department of Earth and Environmental Sciences and the Environmental Geophere Research Lab (EGRL), Korea University) ;
  • Kim, Kang-Joo (Department of Environmental Engineering, Kunsan National University) ;
  • Shevalier, M. (Applied Geochemistry Group, Department of Geology & Geophysics, University of Calgary)
  • 채기탁 (고려대학교 지구환경과학과 및 천부지권환경연구실) ;
  • 윤성택 (고려대학교 지구환경과학과 및 천부지권환경연구실) ;
  • 최병영 (고려대학교 지구환경과학과 및 천부지권환경연구실) ;
  • 김강주 (군산대학교 환경공학과) ;
  • Published : 2005.02.01
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Abstract

Carbon dioxide ($CO_2$) is the greatest contributor among the major greenhouse gases covered by the Kyoto Protocol. Therefore, substantial efforts for the control and reduction of $CO_2$ emissions, including increased efficiency of fossil fuel energy usage, development of energy sources with lower carbon content, and increased reliability on alternative energy sources, are being performed worldwide. However, development and industrial application of $CO_2$ sequestration techniques are needed to meet the requirements of the Kyoto Protocol. Among the $CO_2$ sequestration methods developed, geological sequestration methods such as the storage in deep aquifers, deep coal seams and oil and gas reservoirs and the mineral carbonation is considered most favorable because of its stability and environmental effectiveness. In this review, geochemical concepts and technologic development of geologic sequestration technology, especially the storage in deep aquifers and the mineral carbonation, are discussed. The weakness and strengths for each of geologic sequestration methods, are also reviewed.

이산화탄소($CO_2$)는 기후협약에 관한 교토의정서에서 적시한 온실가스 중에서 가장 중요한 물질이다. 이에 세계 각 국은 화석에너지 사용의 효율성 증가, 저탄소 함량의 에너지원, 대체에너지원 개발 등 이산화탄소 배출량을 조절하고 줄이기 위한 기술 개발에 상당한 노력을 기울이고 있다. 그러나 교토의정서에서 제시한 배출량을 만족시키기 위해서 는 이산화탄소 처분 기술의 개발과 적용이 필수적으로 요구된다. 현재까지 개발된 이산화탄소 처분 기술 중에는 심부 대수층 처분, 심부 석탄층 처분, 유전 및 가스전 처분, 탄산염광물화 처분 등의 지중(지질) 처분 기술이 그 안정성 및 환경적 친화성으로 말미암아 가장 적극적으로 고려되고 있다. 본 논문에서는 이산화탄소 지중 처분 기술, 특히 대수 층 처분 및 탄산염광물화 처분 기술의 지구화학적 개념과 기술개발 동향에 대하여 알아보고 또한 각 지중 처분 기술 의 장점과 단점에 대하여 검토하고자 한다.

Keywords

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