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http://dx.doi.org/10.5668/JEHS.2008.34.3.240

Removal CO2 Using Na2CO3, K2CO3 and Li2CO3 Impregnated Activated Carbon -Characteristics of CO2 Adsorption in Fixed Bed Reactor-  

Choi, Won-Joon (Department of Environmental Engineering, Pusan National University)
Jung, Jong-Hyeon (Department of Health Administration, Sorabol College)
Publication Information
Journal of Environmental Health Sciences / v.34, no.3, 2008 , pp. 240-246 More about this Journal
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.
Keywords
impregnated activated carbon$Na_2CO_3$$K_2CO_3$$Li_2CO_3$; carbon dioxide; alkali metal salt; adsorption;
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Times Cited By KSCI : 5  (Citation Analysis)
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