Garcinia Oil Essay

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CHAPTER 3
BIODIESEL PRODUCTION FROM GARCINIA GUMMI-GUTTA SEEDS
3.1 INTRODUCTION
This chapter presents the materials, methods, equipments, and devices used in this project work. In this project, inedible, vegetable oil such as Garcinia gummi-gutta seed oil is used for the production of biodiesel.
3.2 EXTRACTION OF GARCINIA GUMMI-GUTTA SEED OIL BY MECHANICAL EXPELLER
Continuous pressing of oil seeds by means of expellers is a widely applied process for the extraction of oil from oil seeds. The mechanical expeller consists of a screw, rotating inside a cylindrical cage (barrel) (Plate 3.1). The Garcinia gummi-gutta seeds are pressed between the screw and the barrel and propelled by the rotating screw in a direction parallel to the axis. The compression effect can be increased by minimizing the clearance between the screw shaft and the cage or by reducing the length of the screw flight in the direction of the axial movement. The gradual increasing pressure releases the oil from the seeds which flow out through the slot provided on the periphery of the barrel, at the mean time press-cake (Plate 3.3) continuous to move in the direction of the shaft, and it is collected at the slot provided on the periphery of the barrel. The extracted oil (Plate 3.2) contains some amount of solid wastes. Filtration is done to remove the various unwanted
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From Figure 3.4, it can be seen that, % GGG seed oil methyl ester yield is low at higher value of catalyst concentration and lower value of reaction time. For a given catalyst concentration, the yield increased with increasing reaction time and reaching a maximum value at intermediate reaction time and then decreases. This is the result of a negative concentration quadratic coefficient which is more than the negative reaction time quadratic coefficient, and this may be caused by soap

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