CO2 Absorption by Alkali-modified Amino Acid Salts

알칼리금속을 함침시킨 아미노산 염 수용액의 이산화탄소 흡수특성 연구

  • Lim, Yun-Hui (Department of Applied Environmental Science, Center for Environmental Studies, Kyung Hee University) ;
  • Jo, Young-Min (Department of Applied Environmental Science, Center for Environmental Studies, Kyung Hee University) ;
  • Park, Joon-Seok (Department of Environmental Engineering, Kangwon National University)
  • 임윤희 (경희대학교 환경응용과학과 환경연구센터) ;
  • 조영민 (경희대학교 환경응용과학과 환경연구센터) ;
  • 박준석 (강원대학교 환경공학과)
  • Received : 2011.08.01
  • Accepted : 2011.09.01
  • Published : 2011.10.10

Abstract

The present study attempted to impregnate alkali metals to amino acid in order to improve $CO_2$ absorption capacity. A used amino acid was glycine, of which pH increased up to about 11 with the addition of alkalies. $CO_2$ absorption capacity of amino acid salts was evaluated in a batch and a continuous process. The absorption capacity appeared in turns as; Sodium Glycinate ${\geq}$ Lithium Glycinate > Potassium Glycinate. Amino acid salts showed lower absolute capacity of $CO_2$ absorption than primary amine (Monoethanolamine) at $20^{\circ}C$. In a continuous absorption with 10% $CO_2$ flow, the increasing the reaction temperature, the increasing rate of absorption for amino and was higher that of than amino absorbent.

Keywords

GHG;$CO_2$;amino acid;metal salt

Acknowledgement

Grant : 실내공기질 개선을 위한 저농도 CO2 흡착선택도 향상 연구

Supported by : 한국연구재단

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