Prospectives of Industrial Chemistry (공업화학전망)

The Korean Society of Industrial and Engineering Chemistry (한국공업화학회)
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Trends and Prospects of Adsorption Technology for Indoor Carbon Dioxide Reduction

실내 이산화탄소 저감을 위한 흡착 기술의 동향 및 전망

  • Kang, Hyerin (Department of Environmental Energy Engineering, Graduate School of Kyonggi University) ;
  • Lee, Ye Hwan (Department of Environmental Energy Engineering, Graduate School of Kyonggi University) ;
  • Eom, Hanki (Department of Environmental Energy Engineering, Kyonggi University) ;
  • Kim, Sung Su (Department of Environmental Energy Engineering, Kyonggi University)
  • 강혜린 (경기대학교 일반대학원 환경에너지공학과) ;
  • 이예환 (경기대학교 일반대학원 환경에너지공학과) ;
  • 엄한기 (경기대학교 환경에너지공학과) ;
  • 김성수 (경기대학교 환경에너지공학과)
  • Published : 2020.08.31

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Abstract

최근 실내 공기질(IAQ; indoor air quality)을 악화시키는 물질 중 하나인 이산화탄소 저감 연구가 다수 진행되고 있다. 현재 이산화탄소를 저감하는 방법에는 흡착법, 흡수법, 막분리법 등이 있다. 그 중 흡수법은 액체 상태의 흡수제를 분사하는 공정 특성상 실내에 적용하기 어렵고 2차 오염물 또는 폐수가 발생할 수 있다. 또한, 막분리법은 이산화탄소 분리를 위한 응집 및 침전과 같은 전처리 과정이 필요하므로 실내 이산화탄소 저감에 적합하지 않다. 반면, 흡착법은 비교적 저렴하고 운영이 간단하여 적용 사례가 증가하였으며, 유동 인구가 많고 환기가 어려운 지하철, 버스 등의 대중교통 차량 내부 및 교실, 사무실, 공공시설에서 배출되는 실내 이산화탄소를 제어할 수 있다는 장점이 있어 가장 적합한 해결책으로 알려져 있다. 흡착 공정에 사용되는 대표적인 흡착제 종류에는 활성탄, 제올라이트, 알루미나 등이 있으며, 이 흡착제들을 개질 및 성형하여 흡착제의 성능 및 기계적 강도를 증진시키는 고도화 연구가 활발히 수행되고 있다. 이처럼 적용 대상 내 설치 및 교체가 용이하도록 하는 흡착제 제조 기술 개발이 필요한 실정이며, 흡착제를 상용화 수준까지 발전시킴으로써 강화된 실내 공기질 규제 기준에 대한 대응 및 삶의 질 향상이 기대된다.

Keywords

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