Journal of Korean Society of Environmental Engineers (대한환경공학회지)

Korean Society of Environmental Engineers (대한환경공학회)
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The Evaluation of Adsorption Characteristics of Perfluorinated Compounds (PFCs) in GAC Process Using Continuous Column Adsorption Test

연속 컬럼흡착 실험을 이용한 GAC 공정에서의 과불화 화합물(PFCs) 흡착 특성 평가

  • Son, Hee-Jong (Water Quality Institute of Busan Water Authority) ;
  • Yoo, Soo-Jeon (Department of Environment System Engineering, Pusan National University) ;
  • Jang, Seung-Ho (Department of Environment System Engineering, Pusan National University)
  • 손희종 (부산시 상수도 수질연구소) ;
  • 유수전 (부산대학교 지역환경시스템공학과) ;
  • 장성호 (부산대학교 지역환경시스템공학과)
  • Received : 2011.06.21
  • Accepted : 2011.09.02
  • Published : 2013.03.30
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Abstract

This study accessed the adsorption characteristics of the 11 perfluorinated compounds (PFCs) on coal-based granular activated carbon (GAC). The breakthrough appeared first for PFODA and sequentially for PFHDA, PFTeDA, PFTDA, PFDoDA, PFUnDA, PFDA, PFNA, PFOA, PFOS, and PFHpA. The maximum adsorption capacity (X/M) for the 11 PFCs with apparent breakthrough points ranged from 2.43 ${\mu}g/g$ (for PFODA) to 64.5 ${\mu}g/g$ (for PFHpA). Carbon usage rate (CUR) for PFODA was 0.291 g/day, 11.2 times higher than that for PFHpA (0.026 g/day). The X/M values for the 11 PFCs were fitted well with a linear regression ($r^2$ = 0.89) by their molecular weight (chain length).

입상활성탄 흡착공정에서의 PFCs 11종의 파과 순서는 PFODA가 가장 빨리 파과에 도달하였고, 다음으로 PFHDA, PFTeDA, PFTDA, PFDoDA, PFUnDA, PFDA, PFNA, PFOA, PFOS, PFHpA 순으로 나타났으며, PFCs의 사슬(chain) 길이가 길어질수록 빨리 파과에 도달하였다. 최대 흡착량(X/M)의 경우는 PFODA가 2.43 ${\mu}g/g$으로 가장 낮게 나타났으며, PFHpA가 64.50 ${\mu}g/g$으로 가장 높은 최대 흡착량을 나타내었고, PFOA와 PFOS의 경우는 각각 55.37 ${\mu}g/g$ 및 60.72 ${\mu}g/g$으로 나타났다. 또한, 활성탄 사용률(CUR)의 경우는 PFODA가 0.291 g/day로 나타나 PFHpA의 0.026 g/day 보다 11.2배 정도 높은 활성탄 사용률을 나타내었다. 석탄계 GAC 신탄을 이용한 입상활성탄 흡착공정에서 11종의 PFCs에 대해 최대 흡착량(X/M)과 분자량(사슬 길이)과의 상관성을 평가해 본 결과, $r^2$가 0.89로 나타나 양호한 상관성을 나타내었다.

Keywords

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