Korean Chemical Engineering Research

The Korean Institute of Chemical Engineers (한국화학공학회)
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Pure and Binary Mixture Gases Adsorption Equilibria of Hydrogen/Methane/Ethylene on Activated Carbon

활성탄에서의 H2/CH4/C2H4 순수 기체와 이성분 혼합기체의 흡착평형

  • Jeong, Byung-Man (Environment & Process Technology Division, Korea Institute of Science and Technology) ;
  • Kang, Seok-Hyun (Environment & Process Technology Division, Korea Institute of Science and Technology) ;
  • Choi, Hyun-Woo (Environment & Process Technology Division, Korea Institute of Science and Technology) ;
  • Lee, Chang-Ha (Department of Chemical Engineering, Yonsei University) ;
  • Lee, Byung-Kwon (Environment & Process Technology Division, Korea Institute of Science and Technology) ;
  • Choi, Dae-Ki (Environment & Process Technology Division, Korea Institute of Science and Technology)
  • 정병만 (한국과학기술연구원 환경공정연구부) ;
  • 강석현 (한국과학기술연구원 환경공정연구부) ;
  • 최현우 (한국과학기술연구원 환경공정연구부) ;
  • 이창하 (연세대학교 화학공학과) ;
  • 이병권 (한국과학기술연구원 환경공정연구부) ;
  • 최대기 (한국과학기술연구원 환경공정연구부)
  • Received : 2005.01.18
  • Accepted : 2005.02.15
  • Published : 2005.06.30
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Abstract

Adsorption equilibria of the gases $H_2$, $CH_4$, and $C_2H_4$ and their binary mixtures on activated carbon (Calgon co.) have been measured by static volumetric method in the pressure range of 0 to 18 atm at temperatures of 293.15, 303.15, and 313.15 K. From the parameters obtained from single component adsorption isotherm, multi-component adsorption equilibria could be predicted and compared with experimental data. The binary experimental data were applied to four models : extended Langmuir, extended Langmuir-Freundlich, Ideal Adsorbed Solution theory (IAST), and Vacancy Solution Model (VSM). The models were found to describe the experimental data with a reasonable accuracy. Extended L-F model predicts equilibria of mixture better than any other model.

활성탄 흡착제(Calgon co.)에 대하여 수소, 메탄 그리고 에틸렌의 단일성분 흡착평형과 이들의 혼합가스의 흡착평형을 정적부피법으로 293.15 K, 303.15 K 그리고 313.15 K의 온도와 18 atm의 압력 이하에서 측정하였다. 순수 기체의 흡착등온선을 이용하여 혼합성분의 흡착평형을 예측하였고 실험데이터와 비교하였다. 사용한 모델식은 확대 Langmuir 모델, 확대 Langmuir-Freundlich 모델, 이상 흡착 용액 이론 그리고 빈자리 용액 모델이다. 모델식들은 비교적 정확한 예측치를 보였으며, 이 중 확대 L-F 모델이 혼합 기체의 흡착평형을 다른 모델식보다 좋은 예측결과를 보여줬다.

Keywords

References

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