Journal of the Korean Solar Energy Society (한국태양에너지학회 논문집)

The Korean Solar Energy Society (한국태양에너지학회)
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Extraction of Lipids from Microalgae Using Polar and Nonpolar Bi-solvent Systems

이성분 용매 추출에 의한 미세조류로 부터의 바이오디젤용 지질 분리

  • Hong, Yeon-Ki (Dept. of Chemical and Biological Engineering, Chungju National University) ;
  • Kim, Jeong-Bae (Dept. of Energy System Engineering, Chungju National University) ;
  • Ng, K.Y. Simon (National Biofuels Energy Laboratory, Dept. of Chemical Engineering and Material Science, Wayne State University)
  • 홍연기 (충주대학교 화공생물공학과) ;
  • 김정배 (충주대학교 에너지시스템공학과) ;
  • 잉사이먼 (웨인주립대학교 화학공학과 미국 국립 바이오 에너지 연구소)
  • Received : 2011.10.04
  • Accepted : 2011.12.06
  • Published : 2011.12.30
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Abstract

Various single solvents were tested to find the effective solvent for the extraction of algae oil from wet-form Chlorella minutissima. In the case of single solvents, their extractabilities for algae oil were increased with their polarity because the water in wet algae cell is to form a solvent shell around the lipids. Based on these results, the wet-form algae samples were treated with a polar alcohol solvent and then a nonpolar solvent was added in algae residue. In the algae oil extraction by ethanol/n-hexane, total lipid contents were 40-50% and composition of triglyceride in extracted oil was 46.50%. Considering solvent toxicity of conventional solvent mixture such as chloroform and methanol for algae oil extraction, the ethanol/n-hexane system was identified as the effective one for the oil extraction from wet-form Chlorella minutissima.

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References

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