화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.10, No.2, 188-195, March, 2004
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Effect of Relative Humidity on the Adsorption Characteristics of Carbon Tetrachloride in a Fixed Bed
Tae Young Kim, Seoung Jai Kim1, and Sung Yong Cho†
  • Department of Environmental Engieering, Chonnam Naitonal University, Gwang-ju 522-757, Korea
  • 1Envrionmental Research Institute, Chonnam National University, Gwang-ju 500-757, Korea
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Activated carbon is used as an adsorbent in various industrial fields, such as for solvent recovery, gas separation, and deodorization. In this study, the effect of relative humidity on the adsorption characteristics of carbon tetrachloride by a pellet-type carbon adsorbent was investigated. An isothermal adsorption column was set-up to study the effects of feed concentration, flow rate, and relative humidity on the adsorption of carbon tetrachloride onto activated carbon. The relative humidity of the air stream was controlled in a range from 0 to 80% (w/w). Adsorption equilibrium isotherms of carbon tetrachloride with relative humidity were measured by the column dynamic method at 298.15 K. Adsorption isotherms of carbon tetrachloride, with or in the absence of relative humidity, onto activated carbon are expressed well by a Langmuir isotherm. The adsorption capacity of carbon tetrachloride decreased with increasing relative humidity. An adsorption model based on the linear driving force approximation (LDFA) was found to be applicable to fit the experimental data.
Keywords:adsorption;carbon tetrachloride;activated carbon;fixed-bed
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