The fuel properties of rubber seed oil methyl ester in
comparison with that of other esters is shown in Table 2
[5,7–9,14–16]. The experimental procedures adopted for the
fuel property analysis are also given in Table 2. Most of the
fuel properties of rubber seed oil methyl ester are quite
comparable to those of other esters and diesel. The
chromatographic analysis supports that the biodiesel contains
large amount of C18. The C, H, O composition of
rubber seed oil methyl esters are 76.85, 11.82 and 11.32%,
respectively. The present results obtained show that, the
transesterification process improved the fuel properties of
the oil with respect to specific gravity, viscosity, flash point
and acid value. The comparison of these properties with
diesel shows that the methyl ester has a relatively closer fuel
property values to that of diesel (than that of oil). The
viscosity of biodiesel is closer to that of diesel. Hence, no
hardware modifications are required for handling this fuel
(biodiesel) in the existing engine. The calorific values of
methyl esters are lower than that of diesel because of their
oxygen content. The presence of oxygen in the biodiesel
helps for complete combustion of fuel in the engine. The
flash point of rubber seed oil is lowered by transesterification
but it is still higher than that of diesel. A small
percentage addition of biodiesel with diesel increases the
flash point of diesel. Hence, it is safer to store biodiesel–
diesel blends as compared to diesel alone. The properties of
biodiesel are compared with ASTM biodiesel standards
The fuel properties of rubber seed oil methyl ester incomparison with that of other esters is shown in Table 2[5,7–9,14–16]. The experimental procedures adopted for thefuel property analysis are also given in Table 2. Most of thefuel properties of rubber seed oil methyl ester are quitecomparable to those of other esters and diesel. Thechromatographic analysis supports that the biodiesel containslarge amount of C18. The C, H, O composition ofrubber seed oil methyl esters are 76.85, 11.82 and 11.32%,respectively. The present results obtained show that, thetransesterification process improved the fuel properties ofthe oil with respect to specific gravity, viscosity, flash pointand acid value. The comparison of these properties withdiesel shows that the methyl ester has a relatively closer fuelproperty values to that of diesel (than that of oil). Theviscosity of biodiesel is closer to that of diesel. Hence, nohardware modifications are required for handling this fuel(biodiesel) in the existing engine. The calorific values ofmethyl esters are lower than that of diesel because of theiroxygen content. The presence of oxygen in the biodieselhelps for complete combustion of fuel in the engine. Theflash point of rubber seed oil is lowered by transesterificationbut it is still higher than that of diesel. A smallpercentage addition of biodiesel with diesel increases theflash point of diesel. Hence, it is safer to store biodiesel–diesel blends as compared to diesel alone. The properties ofbiodiesel are compared with ASTM biodiesel standards
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