Journal of Korean Society for Atmospheric Environment (한국대기환경학회지)

Korean Society for Atmospheric Environment (한국대기환경학회)
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Adsorption Characteristics of $CH_4/CO_2$ Mixed Gases on Activated Carbon Fibers

활성탄소섬유상에서 CH4/CO2 혼합가스의 흡착 특성

  • Moon, Seung-Hyun (Energy and Environment Research Department, Korea Institute of Energy Research) ;
  • Shim, Jae-Woon (Energy and Environment Research Department, Korea Institute of Energy Research)
  • 문승현 (한국에너지기술연구원 청정에너지연구부) ;
  • 심재운 (한국에너지기술연구원 청정에너지연구부)
  • Published : 2004.01.01
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Abstract

An adsorption process to recover the pure $CH_4\;and\;CO_2$ from its mixture was examined. In this study, activated carbon fibers were used as a selective adsorbent. The activated carbon fibers has 78~94% micropore volume and 10.5~20.3${\AA}$ narrow pore size, and showed high adsorption rate and the good selectivity for $CO_2$ under the ambient pressure. The ACF with high surface area showed short mass transfer zone and long breakthrough time and, its adsorption capacity depended on the microporosity. Compared with single component adsorption, the amount adsorbed $CO_2$ on ACF increased by the roll-up of $CH_4$ in mixed gases. The adsorption selectivity increased as now rate and $CO_2$ concentration of mixed gases increased, showing 5.2 selectivity for 75% $CO_2$ concentration.

Keywords

References

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