Applied Chemistry for Engineering (공업화학)

The Korean Society of Industrial and Engineering Chemistry (한국공업화학회)
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Determination of Adsorption Isotherm Parameters by Breakthrough Curves in Activated Carbon and Zeolite 13X Packed Bed

활성탄 및 제올라이트 13X를 충진한 흡착탑에서 파과곡선을 이용한 흡착등온식 상수의 결정

  • Kang, Sung-Won (Department of Chemical Engineering, Hongik University) ;
  • Min, Byung-Hoon (Department of Chemical Engineering, University of Suwon) ;
  • Suh, Sung-Sup (Department of Chemical Engineering, Hongik University)
  • 강성원 (홍익대학교 화학공학과) ;
  • 민병훈 (수원대학교 화학공학과) ;
  • 서성섭 (홍익대학교 화학공학과)
  • Received : 2004.09.16
  • Accepted : 2004.11.12
  • Published : 2005.02.10
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Abstract

Freundlich isotherms and Toth isotherms were obtained for benzene adsorption on activated carbon and zeolite 13X in static experiments. Breakthrough curves of benzene were measured in adsorption bed packed with the same adsorbents. Relation between breakthrough times and partial pressure of benzene was analyzed and the Freundlich isotherm parameters were determined. Adsorption amount of benzene predicted by the analysis of breakthrough experimental results was relatively consistent with that predicted by the static experimental results. Dynamic experiments for activated carbon bed, where more symmetric breakthrough curves were obtained, produced smaller errors with zeolite bed.

활성탄과 제올라이트 13X에 대한 벤젠의 정적흡착실험으로부터 Freundlich isotherm과 Toth isotherm을 구하였으며 똑같은 흡착제로 충진된 흡착탑을 이용하여 벤젠의 파과곡선을 측정하였다. 파과시간과 벤젠 분압의 관계를 해석하여 Freundlich isotherm의 파라미터를 결정하였다. 파과실험 결과의 해석으로부터 예측되는 벤젠의 흡착량이 정적 실험 결과로부터 예측되는 것과 비교적 잘 일치하였다. 활성탄에 대한 동적 실험 결과에서 좀 더 대칭형태에 가까운 파과곡선이 얻어져서 제올라이트 13X에 비해 더 적은 오차가 나타났다.

Keywords

Acknowledgement

Supported by : 환경청정기술연구센터

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