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A Study on the oxidation characteristics of micro-algal bio diesel derived from Dunaliella tertiolecta LB999

Dunaliella tertiolecta LB999 유래 바이오디젤의 산화특성 연구

Lee, Don-Min;Lee, Mi-Eun;Ha, Jong-Han;Ryu, Jin-Young;Choi, Chang-Yong;Shim, Sang-Hyuk;Lim, Sang-Min;Lee, Choul-Gyun;Lee, Bong-Hee
이돈민;이미은;하종한;류영진;최창용;심상혁;임상민;이철균;이봉희

  • Received : 2015.04.29
  • Accepted : 2015.05.13
  • Published : 2015.06.30

Abstract

Bio diesel has advantages to reduce GHG(Greenhouse Gas) compare with the fossil fuel by using oil comes from plant/animal sources and even waste such as used cook oil. The diversity of energy feeds brings the positive effects to secure the national energy mix. In this circumstance, micro-algae is one of the prospective source, though some technical barriers. We analyzed the bio diesel which was derived from Dunaliella tertiolecta LB999 through the BD100 quality specifications designated by the law. From that result, it is revealed that the oxidation stability is one of the properties to be improved. In order to find the reason for low oxidation stability, we analyzed the oxidation tendency of each FAME components through some methods(EN 14111, EN14112, EN16091). In this study, we could find the higher double bond FAME portion, the more oxidative property(C18:1${\ll}C18:3$) in bio diesel and main unsaturated FAME group is acted as the key component deciding the bio diesel's oxidation stability. It is proved experimentally that C18:3 FAME are oxidized easily under the modified accelerated oxidation test. We also figure out low molecular weight hydrocarbon and FAME were founded as a result of thermal degradation. Some alcohol and aldehydes were also made by FAME oxidation. In conclusion, it is necessary to find the way to improve the micro-algal bio diesel's oxidation stability.

Keywords

Bio Diesel;Micro-algae;Dunaliella tertiolecta;Oxidation Stability;Fatty Acid Methyl Ester

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Acknowledgement

Supported by : 인하대 해양바이오에너지 생산기술연구센터