한국습지학회지 (Journal of Wetlands Research)

  • 제18권1호
  • /
  • Pages.39-44
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  • 2016
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  • 1229-6031(pISSN)
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  • 2384-0056(eISSN)
한국습지학회 (Korean Wetlands Society)
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액상 유기오염물질에 대한 폐커피가루의 흡착능력 평가

Evaluation of the adsorptive capacity of spent coffee powder for the removal of aqueous organic pollutants

  • 김슬기 (국립금오공과대학교 환경공학과) ;
  • 나승민 (국립환경과학원 낙동강물환경연구소) ;
  • 손영규 (국립금오공과대학교 환경공학과)
  • Kim, Seulgi (Department of Environmental Engineering, Kumoh National Institute of Technology) ;
  • Na, Seungmin (Nakdongriver Environment Research Center, National Institute of Environmental Research) ;
  • Son, Younggyu (Department of Environmental Engineering, Kumoh National Institute of Technology)
  • 투고 : 2016.01.06
  • 심사 : 2016.01.22
  • 발행 : 2016.02.29
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초록

최근 커피 이용량이 증가하면서 폐커피가루의 활용에 대한 관심이 환경공학 분야에서 높아지고 있다. 본 연구에서는 폐커피가루를 재활용하여 오염물질에 대한 흡착제로서의 사용 가능성을 평가하기 위하여 액상의 유기 오염물질(메틸렌 블루)에 대한 흡착평형실험 및 흡착속도실험을 수행하였고, 입상활성탄 및 분말활성탄을 이용한 실험결과와 비교하였다. 실험 결과, 흡착평형의 경우 세 종류의 흡착제 모두 Langmuir 식에 잘 맞는 것으로 확인되었으며, 최대흡착량은 분말활성탄(178.6 mg/g), 폐커피가루(60.6 mg/g), 입상활성탄(15.6 mg/g) 순으로 확인되었다. 흡착속도실험에서도 유사 1차식 및 유사 2차식 모두에서 폐커피가루가 입상활성탄보다 우수한 것으로 확인되었다. 이는 폐커피가루의 입자 크기가 입상활성탄보다 작으며 표면이 입상 및 분말활성탄과 같이 다공성 특성을 띄고 있기 때문인 것으로 판단되었다.

The reuse of spent coffee powder has been researched for environmental engineering applications such as adsorbents of organic/inorganic pollutants. In this study adsorption equilibrium tests and adsorption kinetics tests for the removal of aqueous organic pollutant (methylene blue) were conducted using spent coffee powder, granular activated carbon, and powdered activated carbon. It was found that the maximum adsorption capacity of three adsorbents followed the order of powdered activated carbon (178.6 mg/g) > spent coffee powder (60.6 mg/g) > granular activated carbon (15.6 mg/g). The results of adsorption kinetics tests also indicated that spent coffee powder had higher kinetic parameters than granular activated carbon for pseudo 1st and 2nd order kinetics. The high performance of spent coffee powder might be due to its porous surface like those of granular and powdered activated carbons and smaller particle size comparing with granular activated carbon.

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참고문헌

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피인용 문헌

  1. On the Control Process of Odor Material by Using Coffee Wastes vol.8, pp.4, 2017, https://doi.org/10.18178/ijesd.2017.8.4.963