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Designer Biodiesel: Preparation of Biodiesel Blends by Mixing Several Vegetable Oils at Different Volumetric Ratios and their Corresponding Fuel Quality Enhancement

Author Affiliations

  • 1Biomass Conversion Laboratory, Department of Energy, Tezpur University, Napaam-784028, Assam, INDIA

Res.J.chem.sci., Volume 5, Issue (9), Pages 60-65, September,18 (2015)


The fashion of production of biodiesel is emerging exponentially owing to greater disquiet about environmental protection and diminution of fossil fuel reservoirs. In this paper, a novel concept “Designer Biodiesel” for the biodiesel production has been accentuated. Since, the identical fatty acid composition of the biodiesel resembles to the precursor oil; therefore, its fuel properties are directly affected by the composition of the precursor oil. Various blends of some locally available vegetable oils such as Jatropha, Nahor, Yellow Oleander and Pongamia were prepared by mixing at different volumetric ratios (Yellow Oleander: Nahor); (Yellow Oleander: Jatropha); (Pongamia: Yellow Oleander), (Pongamia: Jatropha) and (Pongamia: Nahor). Biodiesel was prepared through a single step concentrated H2SO4 catalyzed transesterification process in laboratory scale from the pure vegetable oils and selected blends and their fuel properties were analyzed according to the standard test methods. 1H NMR technique has been used to determine fatty acid composition of the vegetable oils and the blends. The effect of fatty acid profile/composition on the properties of fuel like viscosity, cetane number, calorific value as well as iodine number had been detected.


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