한국응용과학기술학회지 (Journal of the Korean Applied Science and Technology)

  • 제28권4호
  • /
  • Pages.472-481
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  • 2011
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  • 1225-9098(pISSN)
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  • 2288-1069(eISSN)
한국응용과학기술학회 (The Korean Society of Applied Science and Technology)
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우지로부터 합성된 바이오 디젤의 포화도 감소를 위한 용매 분별 연구

Reduction of Saturated Fatty Acid Methyl Esters of Biodiesel Produced from Beef Tallow by Acetone Fractionation

  • 장화 (충남대학교 식품공학과) ;
  • 신정아 (충남대학교 식품공학과) ;
  • 이기택 (충남대학교 식품공학과)
  • Zhang, Hua (Department of Food Science and Technology, Chungnam National University) ;
  • Shin, Jung-Ah (Department of Food Science and Technology, Chungnam National University) ;
  • Lee, Ki-Teak (Department of Food Science and Technology, Chungnam National University)
  • 투고 : 2011.11.20
  • 심사 : 2011.12.09
  • 발행 : 2011.12.30
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초록

It is known that the content of saturated fatty acids methyl ester (SFAME) affect the pour point of biodiesel at low temperature. In this study, biodiesel (BD) was produced from beef tallow (TAL) by alkali catalyst. To reduce the saturation in BD, acetone fractionation was applied. Besides, TAL was also solvent-fractionated to reduce the saturated fatty acid (SFA) content for further producing BD. With acetone, TAL or TAL methyl ester (5:1 v/w) were fractionated at 10, 0, -10, and $-15^{\circ}C$, respectively. At $-10^{\circ}C$, 17.35% of SFA was observed in fractionated TAL (liquid part, -10TAL) when 5:1 solvent ratio was used for 24 hr. Under the same condition, fractionated BD (liquid part, -10BD) showed SFA (33.14%) with 78wt % yield. Also, fractionation of BD with different concentration of crystallizer 209 (0.1, 0.5, and 1%) along with different time (2, 6, 12, and 24 hr.) was observed. The best condition for reducing the SFA was 0.5% of crystallizer 209 addition for 12 hr of fractionation time at $-10^{\circ}C$, in which 30.14% of SFA content was observed in BD (liquid part). Among different crystallizer, ps 66 showed the least content of SFA content (23.28%) in BD after fractionation ($-10^{\circ}C$ and 24 hr) with 0.5wt% addition.

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