Applied Chemistry for Engineering (공업화학)

The Korean Society of Industrial and Engineering Chemistry (한국공업화학회)
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Energy Density Analysis in Ultrasound Assisted Solvent Extraction Process

초음파가 도입된 용매추출공정에서 에너지 밀도 분석

Hong, In-Kwon;Lee, Seung-Bum;Lee, Seung-Moon
홍인권;이승범;이승문

  • Published : 20031100
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Abstract

Most of the oils were extracted through distillation and solvent extraction processes. In this study, the characteristics of oil extraction process from rice bran were evaluated in an optimum operating condition by comparing the ultrasound assisted solvent extraction (UASE) process toe the distillation and the solvent extraction processes. And UASE process was studied in terms of the ultrasonic energy density effects and the extraction yield. Then, the ultrasonic irradiation time was varied as 1, 3, 5, 10, 20 and 30 min and the extraction temperature was set at 293.15, 303.15, and 313.15 K. The ultrasonic power was varied in the range of 390 to 520 W. The energy density was evaluated in terms of the ultrasonic intensity, the ultrasonic irradiation effects with the temperature and irradiation time were analyzed. The extraction amount of rice bran oil was increased with ultrasonic irradiation time and ultrasonic power. The irradiation time of ultrasonic extraction process was very shorter than the previous extraction processes. The ultrasonic energy density was proportional to the irradiation power, but the energy density was inversely proportional to the operating temperature.

유지종의 추출공정에는 여러 가지 용매추출법이 사용되고 있다. 본 연구에서는 초음파 에너지가 도입된 추출공정과 증류나 용매추출을 이용한 공정의 최적 추출조건에서 추출특성과 초음파 에너지 밀도 영향에 따른 추출특성을 분석하였다. 초음파의 조사시간은 1, 3, 5, 10, 20, 30 min이고, 추출공정에서 온도변수로 293.15, 303.15 313.15 K가 적용되었으며, 초음파의 세기는 390 W부터 520 W로 65 W의 간격으로 변화를 주었다. 또, 초음파 세기에 따른 초음파 에너지 밀도를 측정하였으며, 온도와 시간에 따른 초음파 에너지 영향에 대해서도 해석하였다. 초음파의 조사시간과 초음파 세기 증가에 따라 유지의 추출량도 증가하는 경향을 보였으며, 유지 추출공정에 초음파 추출공정을 도입하므로써 단순 용매추출공정에 비해 추출조작시간이 크게 단축되었다. 초음파의 세기가 증가됨에 따라 초음파 에너지 밀도는 증가하는 경향을 나타내었으며, 온도증가에 따라 초음파 에너지 밀도는 감소하는 경향을 보였다.

Keywords

References

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