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Received January 18, 2005
Accepted February 15, 2005
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활성탄에서의 H2/CH4/C2H4 순수 기체와 이성분 혼합기체의 흡착평형
Pure and Binary Mixture Gases Adsorption Equilibria of Hydrogen/Methane/Ethylene on Activated Carbon
한국과학기술연구원 환경공정연구부, 136-791 서울시 성북구 하월곡동 39-1 1연세대학교 화학공학과, 120-749 서울시 서대문구 신촌동 134
Environment & Process Technology Division, Korea Institute of Science and Technology, 39-1, Hawolgok-dong, Sungbuk-gu, Seoul 136-791, Korea 1Department of Chemical Engineering, Yonsei University, 134, Sinchon-dong, Seodaemun-gu, Seoul 120-749, Korea
dkchoi@kist.re.kr
Korean Chemical Engineering Research, June 2005, 43(3), 371-379(9), NONE Epub 7 July 2005
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Abstract
활성탄 흡착제(Calgon co.)에 대하여 수소, 메탄 그리고 에틸렌의 단일성분 흡착평형과 이들의 혼합가스의 흡착평형 을 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.
Adsorption equilibria of the gases H2, CH4, and C2H4 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.
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Suwanayuen S, Danner RP, AIChE J., 26(1), 68 (1980)
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Ahmadpour A, Wang K, Do DD, AIChE J., 44(3), 740 (1998)
Ruthven DM, "Princicles of Adsorption and Adsorption Processes", Wiley, New York (1984)
Yun JH, Park HC, Moon H, Korean J. Chem. Eng., 13(3), 246 (1996)
Yun JH, Choi DK, Kim SH, AIChE J., 45(4), 751 (1999)
Talu O, Zwiebel I, AIChE J., 32(8), 1263 (1986)
Cochran TW, Kabel RL, Danner RP, AIChE J., 31(2), 268 (1985)
Kim J, Moon J, Lee H, HWAHAK KONGHAK, 27(3), 245 (1989)
Han S, Lee H, HWAHAK KONGHAK, 33(6), 720 (1995)
Choi BU, Choi DK, Lee YW, Lee BK, J. Chem. Eng. Data, 48(3), 603 (2003)
Brunauer S, Deming LS, Deming WE, Teller EJ, J. Am. Chem. Soc., 62, 1723 (1940)
BUSS E, Gas Sep. Purif., 9(3), 189 (1995)
