Journal of Korea Society of Waste Management (한국폐기물자원순환학회지)

Korea Society of Waste Management (한국폐기물자원순환학회)
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Ultrasonic Assisted Solvent Extraction of Functional Oil from Waste Ground Coffee

초음파에너지를 이용한 폐커피가루로부터 기능성오일의 추출

  • Lee, Seung-Bum (Division of Energy & Biological Engineering, Kyungwon University) ;
  • Kim, Hyung-Jin (Department of Environment & Health, Kimpo College) ;
  • Lee, Jae-Dong (Division of Energy & Biological Engineering, Kyungwon University)
  • 이승범 (경원대학교 환경에너지공학전공) ;
  • 김형진 (김포대학 환경보건과) ;
  • 이재동 (경원대학교 환경에너지공학전공)
  • Published : 2010.06.20
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Abstract

The extracted coffee oil from waste ground coffee was increased with ultrasonic irradiation time in ultrasonic assisted solvent extraction. The optimum extraction time was 20 min, and it was faster than solvent extraction. The extraction was more dependent on solubility parameter than ultrasonic energy density in the low ultrasonic power, but the ultrasonic energy density affected its extraction in the high ultrasonic power and in turn, extraction yield. The optimum extraction condition was 450W of ultrasonic power in $40^{\circ}C$ using n-hexane as a solvent. The ultrasonic assisted solvent extraction reduced the extraction time, and the oil was able to be extracted in low temperature. The coffee oil may be used biodiesel through a refinement.

Keywords

References

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