Journal of Environmental Health Sciences (한국환경보건학회지)

Korean Society of Environmental Health (한국환경보건학회)
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Removal CO2 Using Na2CO3, K2CO3 and Li2CO3 Impregnated Activated Carbon -Characteristics of CO2 Adsorption in Fixed Bed Reactor-

Na2CO3, K2CO3 및 Li2CO3 첨착활성탄을 이용한CO2 제거 -고정층 반응기에서의 CO2 흡착특성-

  • Choi, Won-Joon (Department of Environmental Engineering, Pusan National University) ;
  • Jung, Jong-Hyeon (Department of Health Administration, Sorabol College)
  • 최원준 (부산대학교 환경공학과) ;
  • 정종현 (서라벌대학 보건행정과)
  • Published : 2008.06.30
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Abstract

The purpose of this study was to gain basic information on the characteristics of $CO_2$ adsorption in relation to $Na_2CO_3$, $K_2CO_3$, $Li_2CO_3$-impregnated activated carbon in a Fixed Bed Reactor. From the results of this study the following conclusions were made: $Na_2CO_3$, $K_2CO_3$, $Li_2CO_3$-impregnated activated carbon had a longer breakthrough time and more enhanced adsorption capacity than activated carbon alone. When tested with isothermal adsorption and tested for $CO_2$ adsorption the amount of $CO_2$ adsorbed varied with temperature, $CO_2$ inlet concentration, gas flow rate, aspect ratio, etc. Based on the results, when Langmuir, Freundlich and Dubinin-Polanyi adsorption isotherms were used for linear regression of isothermal adsorption data, Langmuir adsorption isotherm was the most suitable. And, the optimum condition for $Na_2CO_3$ and $K_2CO_3$ impregnated activated carbon make-up was 1N and $Li_2CO_3$ was 0.1N. It could be concluded that adsorption capacity was decreased with adsorption temperature and increased gas concentration. When the aspect ratio (L/D) was varied 0.5, 1.0 and 2.0, the significant drop of adsorption amount was observed below 1.0 and breakthrough time was shortened with gas flow rate.

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References

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