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http://dx.doi.org/10.4491/KSEE.2015.37.3.175

Adsorption Characteristics of Functionalized Activated Carbon for High Temperature CO2 Capture  

Choi, Sung-Woo (Department of Environmental Science and Engineering, Keimyung University)
Lee, Cheol-Gyu (Department of Environmental Science and Engineering, Keimyung University)
Publication Information
Journal of Korean Society of Environmental Engineers / v.37, no.3, 2015 , pp. 175-181 More about this Journal
Abstract
Activated carbon impregnated with polyethyleneimine (PEI) was evaluated as a functionalized adsorbent for $CO_2$ capture. The $CO_2$ adsorption characteristics of the adsorbents was undertaken using GC/TCD, BET surface area and FT-IR. A series of adsorbents were synthesized by impregnating 10, 30, 50 wt% of PEI on activated carbons and were investigated $CO_2$ adsorption capacity at high and low adsorption temperature. The $CO_2$ adsorption capacity at $20^{\circ}C$ and $100^{\circ}C$ was as follow: AC > PEI(10)-AC > PEI(30)-AC > PEI(50)-AC at $20^{\circ}C$ and PEI(10)-AC > PEI(30)-AC > PEI(50)-AC > AC at $100^{\circ}C$. Adsorption capacities of amine functionalized AC was lager than virgin AC at high temperature due to chemisorption by amino-group content. From the results, the PEI(10)-AC showed one of the most promising adsorbents for $CO_2$ capture from flue gas at high temperature.
Keywords
Polyethyleneimine; $CO_2$ Adsorption; Activated Carbon; Impregnation;
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Times Cited By KSCI : 3  (Citation Analysis)
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