Journal of the Korean Applied Science and Technology (한국응용과학기술학회지)

The Korean Society of Applied Science and Technology (한국응용과학기술학회)
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Conversion of Vegetable Oils and Mixed Fat into Biodiesel Using $Al_2O_3$-Supported CaO Catalyst

$Al_2O_3$ 지지 CaO촉매에 의한 식물유와 혼합지방의 바이오디젤화

  • Hyun, Young-Jin (Department of Chemical & Life Science Engineering, Jeju Nation'l University)
  • 현영진 (제주대학교 공과대학, 생명화학공학과)
  • Received : 2010.09.27
  • Accepted : 2010.12.06
  • Published : 2010.12.31
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Abstract

The transesterification of rapeseed oil, soybean oil, and mixed fat were conducted at $65^{\circ}C$ with $Al_2O_3$-supported CaO, 0.8 wt% KOH, 1 wt% NaOH and mixed catalyst. The overall conversion(%) of rapeseed oil indicated to be 96% at the 12:1 molar ratio of methanol to oil, 8 wt% CaO and 2 wt% water. The pH ranges of biodiesel for mixed fat using four catalysts and for three fats using 8wt% CaO were 7.3-9.1, 7.3-7.5, respectively. The volumes of water needed to wash biodiesel from rapeseed oil using 0.8 wt% KOH and 8 wt% CaO were 15 mL and 3 mL.

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