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J Korean Soc Environ Eng > Volume 37(3); 2015 > Article
J Korean Soc Environ Eng 2015;37(3): 175-181. doi: https://doi.org/10.4491/KSEE.2015.37.3.175
고온 이산화탄소 포집을 위한 기능성 활성탄의 흡착특성
최성우, 이철규
계명대학교 환경과학과
Adsorption Characteristics of Functionalized Activated Carbon for High Temperature CO2 Capture
Sung-Woo Choi, Cheol-Gyu Lee
Department of Environmental Science and Engineering, Keimyung University
Corresponding author  Sung-Woo Choi ,Tel: 053-580-5245, Fax: 053-580-6286, Email: swchoi@kmu.ac.kr
Received: November 6, 2014;  Revised: March 23, 2015;  Accepted: March 31, 2015.  Published online: March 31, 2015.
Activated carbon impregnated with polyethyleneimine (PEI) was evaluated as a functionalized adsorbent for CO2 capture. The CO2 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 CO2 adsorption capacity at high and low adsorption temperature. The CO2 adsorption capacity at 20℃ and 100℃ was as follow: AC > PEI(10)- AC > PEI(30)-AC > PEI(50)-AC at 20℃ and PEI(10)-AC > PEI(30)-AC > PEI(50)-AC > AC at 100℃. 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 CO2 capture from flue gas at high temperature.
Key Words: Polyethyleneimine, CO2 Adsorption, Activated Carbon, Impregnation
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