Korean Chemical Engineering Research

The Korean Institute of Chemical Engineers (한국화학공학회)
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Optimization of Fatty Acids Production from Lard via Subcritical Water-Mediated Hydrolysis

아임계수 가수분해를 통한 돈지로부터 지방산 생산의 최적화

  • Ryu, Jae-Hun (Department of Chemical Engineering, Hanyang University) ;
  • Shin, Hee-Yong (Center for Applied Energy Research, University of Kentucky)
  • 류재훈 (한양대학교 화학공학과) ;
  • 신희용 (켄터키대학교 응용에너지연구소)
  • Received : 2014.06.16
  • Accepted : 2014.08.11
  • Published : 2015.04.01
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Abstract

Response surface methodology (RSM) in combination with a 17-run central composite design (CCD) was applied to optimize the non-catalytic hydrolysis of lard using subcritical water to produce fatty acids (FA). The effects of three variables including temperature, molar ratio of water to oil and time, and their relationship on FA content were investigated. A quadratic regression model was employed to predict the FA contents. Optimum reaction conditions for maximizing the FA content were obtained as follows: reaction temperature of $288.5^{\circ}C$, molar ratio of water to oil of 39.5 and reaction time of 29.5 min. Under the optimum conditions, the predicted and experimentally obtained FA contents were 97.06% and 96.99%, respectively.

지방산 생산을 위한 돈지의 아임계수 가수분해 공정을 최적화하기 위하여 17-run 중심합성법(central composite design)에 기초한 반응표면법(response surface methodology)이 사용되었다. 반응 온도, 오일 대비 물의 몰 비, 반응 시간과 같은 변수 및 이들의 상관관계가 지방산 함량에 미치는 영향을 조사하였으며, 지방산 함량을 예측하기 위하여 2차 다항 회귀방정식이 제안되었다. 최대 지방산 함량을 얻을 수 있는 반응 조건은 $288.5^{\circ}C$, 39.5몰 비, 29.5분이었으며, 이 조건에서의 예측 및 실제 지방산 함량은 각각 97.06% 및 96.99%였다.

Keywords

References

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