Production of biodiesel: A technical review

The energy crises, particularly the fear of depletion of mineral oils are becoming a very serious issue. Non-oil producing countries are becoming the victim of the scenario. On the other hand the environmental pollution, green house effect, global warming and acid rain are also threatening the life. Biodiesel is a promising alternative fuel which can cater the problems. Vegetable oils can be used to substitute mineral diesel after reducing their viscosity and specific gravity. For this purpose different techniques are used. Among these, transesterification is frequently used as it is the most reliable, most feasible, and can be used to produce biodiesel easily.