Studies on Guizotia abyssinica L. oil: biodiesel synthesis and process optimization.

Guizotia abyssinica seeds, a common bird feedstock, have been explored for the potential of biodiesel synthesis. The oil was extracted from the seeds by solvent extraction and composition of G. abyssinica oil was examined. The reaction parameters for biodiesel synthesis have been optimized. Temperature, oil: methanol ratio, catalyst type and catalyst concentration were found to have significant role on ester conversion. According to this study, the maximum yield of ester (98.7%) can be obtained with optimized sodium methoxide catalyst dosage (0.6%) at an operational temperature of 65 degrees C. Methyl ester of G. abyssinica oil was also studied for its oxidation stability and low temperature properties. Further, the synthesized product was blended in diesel at 5-20% ratios and evaluated for physico-chemical properties.

[1]  Y. Chisti.  Biodiesel from microalgae. , 2007, Biotechnology advances.

[2]  A. Demirbas,et al.  Relationships derived from physical properties of vegetable oil and biodiesel fuels , 2008 .

[3]  S. Pétursson.  Clarification and expansion of formulas in AOCS recommended practice Cd 1c-85 for the calculation of lodine value from FA composition , 2002 .

[4]  C. Klofutar,et al.  THE TEMPERATURE DEPENDENCE OF DYNAMIC VISCOSITY FOR SOME VEGETABLE OILS , 1998 .

[5]  Farooq Anwar,et al.  Moringa oleifera oil: a possible source of biodiesel. , 2008, Bioresource technology.

[6]  M. Martínez,et al.  A comparative study of the production of ethyl esters from vegetable oils as a biodiesel fuel optimization by factorial design , 2007 .

[7]  M. Sharma,et al.  Jatropha-Palm biodiesel blends: An optimum mix for Asia , 2007 .

[8]  O. Fasina,et al.  Predicting temperature-dependence viscosity of vegetable oils from fatty acid composition , 2006 .

[9]  G. Vicente,et al.  Optimisation of integrated biodiesel production. Part I. A study of the biodiesel purity and yield. , 2007, Bioresource technology.

[10]  Robert O. Dunn,et al.  Low-temperature properties of triglyceride-based diesel fuels: Transesterified methyl esters and petroleum middle distillate/ester blends , 1995 .

[11]  A. Saydut,et al.  Transesterified sesame (Sesamum indicum L.) seed oil as a biodiesel fuel. , 2008, Bioresource technology.

[12]  S. Meneghetti,et al.  Studies of Terminalia catappa L. oil: characterization and biodiesel production. , 2008, Bioresource technology.

[13]  M. N. Rao,et al.  Production and evaluation of biodiesel from sunflower (Helianthus annus) and Nigerseed oil (Guizotia abyssinica). , 2006 .

[14]  M. Ramos,et al.  Influence of fatty acid composition of raw materials on biodiesel properties. , 2009, Bioresource technology.