The new process technologies developed during the last years made it possible to produce biodiesel from desert plants. From an economic point of view; the production of biodiesel is very feedstock sensitive. Many previous reports estimated the cost of biodiesel production based on assumptions, made by their authors, regarding production volume, feedstock and chemical technology. From a waste management standpoint, producing biodiesel from used frying oil is environmentally beneficial, since it provides a cleaner way for disposing these products; meanwhile, it can yield valuable cuts in CO2 as well as significant tail-pipe pollution gains.
This paper introduces a review of some researches related to the production of biofuels from plants. The present study is focused on five types of plants which are castor, coconut, dates nucleus, jatropha and olive. Plants comparison in terms of growing conditions and how to convert each plant's oil to biofuels are presented. Chemical properties (heating value, flash point, viscosity……etc) of pure oil, oil mixing ratios with the petro diesel and for pure biofuels and also economic aspects are reviewed. The study leads to the best plants (castor and jatropha) for the production of biofuels in Egypt. The plants are appropriate to the circumstances of their agriculture with farming conditions in Egypt and non–edible. Biodiesel output from these plants has chemical properties approach to the chemical properties of petro diesel