Journal of Korean Society of Environmental Engineers (대한환경공학회지)

Korean Society of Environmental Engineers (대한환경공학회)
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Correlations Between Pore Structure of Activated Carbon and Adsorption Characteristics of Acetone Vapor

활성탄의 세공구조와 Acetone Vapor 흡착특성의 상관관계

  • Lee, Song-Woo (Department of Chemical Engineering, Pusan National University) ;
  • Bae, Sang-Kyu (Department of Chemical Engineering, Pusan National University) ;
  • Kwon, Jun-Ho (Department of Chemical Engineering, Pusan National University) ;
  • Na, Young-Soo (Segye Chem.Co., Ltd.) ;
  • An, Chang-Doeuk (Segye Chem.Co., Ltd.) ;
  • Yoon, Young-Sam (Nakdong River Water Environment Laboratory, National Institute of Environmental Research) ;
  • Song, Seung-Koo (Department of Chemical Engineering, Pusan National University)
  • Published : 2005.06.30
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Abstract

This study is to investigate the correlation between pore structures of activated carbons and adsorption characteristics of acetone vapor using the dynamic adsorption method. The experimental results showed that the breakthrough time of ACT activated carbon made by Takeda was the longest, because ACT has more micropores below pore diametr $10{\AA}$ than the compared activated carbons. The equilibrium adsorption capacity had direct correlation to the breakthrough time. The relation between BET specific surface area and the equilibrium adsorption capacity was hard to say linear. Therefore, it was difficult to estimate the adsorption ability of activated carbons only by BET specific surface area. The correlation factor between the cumulative surface area and the equilibrium adsorption capacity decreased with enlarging the range of pore size, and there was the highest correlation factor in the range of below $10{\AA}$.

연속식 흡착장치를 사용하여 활성탄의 세공구조와 아세톤 중기의 흡착특성과의 상관관계를 고찰하였다. 실험에서 비교한 활성탄 중 젠체 세공구조에서 직경 $10{\AA}$ 이하의 세공이 가장 많이 발달한 Takeda의 ACT 활성탄이 가장 긴 파과시간을 가지고 있었다. 평형흡착량은 파과시간에는 비례했지만, BET 비표면적에는 비례한다고 볼 수 없었기 때문에 BET 비표면적 만으로 흡착능을 평가하는 것은 어려웠다. 누적표면적과 평형흡착량과의 상관관계는 $10{\AA}$ 이하에서 가장 컸고, 세공범위가 클수록 감소했다.

Keywords

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