Applied Chemistry for Engineering (공업화학)

The Korean Society of Industrial and Engineering Chemistry (한국공업화학회)
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Optimization for Decolorization and UV-Absorbility of Refined Sea Buckthorn Oil Using CCD-RSM

CCD-RSM을 이용한 시벅턴 오일의 탈색공정 최적화 및 자외선 흡수능력 평가

  • Hong, Seheum (Department of Polymer Science and Engineering, Dankook University) ;
  • Zheng, Yunfei (Department of Chemical Engineering, Dankook University) ;
  • Lee, Seung Bum (Department of Chemical Engineering, Dankook University)
  • Received : 2020.12.15
  • Accepted : 2021.01.04
  • Published : 2021.02.10
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Abstract

In this study, the adsorption decolorization process of sea buckthorn oil was carried out to verify the possibility of the sea buckthorn oil as a natural UV absorber. The optimization was carried out by using the central composite design model-response surface methodology (CCD-RSM). The response values of CCD-RSM were selected as the decolorization effect through the process, acid value after decolorization, and UV absorbance of the decolored oil at 290nm. The amount of adsorbent, temperature and time were selected as the process variables for the experiments. According to the results of CCD-RSM, the results of optimization were all consistent. The optimal conditions, which satisfy CCD-RSM statically and mathematically, were 4.32 wt.%, 134.90 ℃, and 19.8 min for the amount of adsorbent, temperature and time, respectively. The estimated response values expected under these optimal conditions values were 94.78%, 2.08 mg/g KOH, and 2.91 for the decolorization effect, acid value and UV absorbance at 290 nm, respectively. Also the average error from actual experiment for verifying the conclusions was smaller than 2%. Therefore, it was confirmed that the application of CCD-RSM to the adsorption decolorization process of sea buckthorn oil showed a very high level of acceptable results and that the sea buckthorn oil has high possibility to be used as a natural UV absorber.

본 연구에서는 천연 오일인 시벅턴 오일의 천연 자외선 흡수제로의 사용 가능성을 알아보기 위하여 시벅턴 원유에 대한 흡착 탈색공정을 수행하고, 이를 CCD-RSM (central composite design model-response surface methodology)을 이용하여 최적화하였다. CCD-RSM의 반응치로는 탈색과정의 탈색효과, 탈색 후 정제유의 산가 및 290 nm에서의 자외선흡광도로 설정하였으며, 독립변수로는 탈색제의 첨가량, 탈색온도, 탈색시간으로 설정하였다. CCD-RSM에 의한 통계학적 최적화 결과와 수학적 최적화 결과를 비교한 결과 3가지 반응치를 동시에 만족하는 최적조건으로 탈색제의 첨가량(4.32 wt.%), 탈색온도(134.9 ℃) 및 탈색시간(19.8 min)으로 나타났다. 이 최적 조건하에서 예측된 반응치 중 탈색과정의 탈색효과는 94.78%, 탈색 후 정제유의 산가는 2.08 mg/g KOH, 그리고 290 nm에서의 자외선 흡광도는 2.91로 나타났으며, 오차율은 2% 이하로 낮게 나타났다. 따라서 CCD-RSM을 시벅턴 원유의 흡착 탈색공정에 적용할 경우 매우 높은 수준의 만족하는 결과를 얻을 수 있음을 확인하였으며 천연 식물성 오일인 시벅턴 오일을 천연 자외선 흡수제로서 사용 가능함을 확인하였다.

Keywords

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