Degumming is necessary in bio diesel production because the machine is used to remove high gum content in the extracted oil which is bad for Biodiesel production. It increases refining loss because gums can initiate emulsification with some of the neutral oil. This process enhances the suitability of the jatropha oil. Degumming also helps to reduce phosphor. Degumming makes the jatropha oil less viscous and neutral resulting in better combustion in the cylinder.
The Methanol recovery unit is used when methanol is introduced during solvent extraction phase of the oil from the crushed nuts. The temperature of the extraction varies amongst the different types of methods used in oil extraction. The oil is then centrifuged, placed in a container and kept in water bath with controlled temperature.