Filter cake oil-wax as raw material for the production of biodiesel: Analysis of the extraction process and the transesterification reaction

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Abstract

The viability of using the waste obtained in the manufacture of sugar from sugarcane for the production of biodiesel has been analyzed. Two fundamental stages are necessary to obtain biodiesel; the first stage is the extraction process from the waste oil materials and the second is the transesterification reaction. Four techniques, Soxhlet, orbital shaker extraction, ultrasonic-assisted extraction, and supercritical fluid extraction, have been analyzed. For Soxhlet, orbital shaker extraction, and ultrasonic-assisted extraction, the organic solvent (hexane) was maintained for all experiment. In supercritical fluid extraction two solvents were evaluated: pure COand mixtures of COand 5% (v: v) methanol. The reaction kinetics of the transesterification reaction with an acidic catalyst and a basic catalyst were analysed. The results show that the supercritical extraction process produces a better product for the subsequent transesterification reaction. This finding is attributed to the high selectivity of carbon dioxide in the recovery of fatty acids and triglycerides in comparison with other solvents.

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Casas, L., Hernández, Y., Mantell, C., Casdelo, N., & Martinez De La Ossa, E. (2015). Filter cake oil-wax as raw material for the production of biodiesel: Analysis of the extraction process and the transesterification reaction. Journal of Chemistry, 2015. https://doi.org/10.1155/2015/946462

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