New & Renewable Energy (신재생에너지)

Korean Society for New and Renewable Energy (한국신·재생에너지학회)
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Improvement of Low Temperature Property of Biodiesel from Palm Oil and Beef Tallow Via Urea Complexation

요소 착물형성에 의한 포화지방산 고함유 팜유 및 우지 유래 바이오디젤의 저온유동성 개선효과 연구

  • 이영화 (농촌진흥청 국립식량과학원 바이오에너지작물센터) ;
  • 신정아 (충남대학교 농업과학연구소) ;
  • 장화 (충남대학교 식품공학과) ;
  • 이기택 (충남대학교 식품공학과) ;
  • 김광수 (농촌진흥청 국립식량과학원 바이오에너지작물센터) ;
  • 장영석 (농촌진흥청 국립식량과학원 바이오에너지작물센터) ;
  • 박광근 (농촌진흥청 국립식량과학원 바이오에너지작물센터)
  • Received : 2012.10.07
  • Accepted : 2012.12.11
  • Published : 2012.12.25
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Abstract

Biodiesel is non-petroleum based fuel produced from vegetable oils or animal fats through transesterification. The compositions of saturated and unsaturated fatty acids in the feedstocks are important factors for biodiesel quality in terms of low-temperature fluidity and oxidative stability. The goal of this study is to improve the cold flow property of biodiesel from vegetable and animal origin containing highly saturated methyl esters (approx. 50%). In this purpose poly-saturated methyl esters in palm and tallow biodiesel were removed via urea-based fractionation and then the recovered fractions (enriched unsaturated fatty acid methyl esters) were supplemented with cold flow improvers. The highest concentration of unsaturated fatty acid methyl esters (93.8%) was obtained using a urea/fatty acid ratio of 3:1 at the crystallization temperature of $0^{\circ}C$ for 17 hours in incubation, with recovery of 71% and the addition of cold flow improver (Flozol$^{(R)}$ 515, 3,000 ppm) to the enriched poly-unsaturated fatty acid methyl esters reduced the CFPP(cold filter plugging point) of palm biodiesel from $12^{\circ}C$ to $-42^{\circ}C$. In tallow biodiesel both the enrichment of unsaturated fatty acid methyl esters (93.71%) and the addition of cold flow improver (Infineum R408, 3,000ppm) reduced the CFPP from $10^{\circ}C$ to $-32^{\circ}C$.

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References

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