Biodiesel as an alternative fuel employed in CI engine to meet the sustainability criteria: A review.

Transportation is important for day-to-day operations and economic development. Transportation of different modes, power generation, agriculture, mining locomotives, and all of them are dependent on fossil fuels. Over the last six decades, crude oil use has risen 16-fold. The need for and use of petroleum-derived fuel is growing day by day, but there is scarcity. Biodiesel in place of fossil fuels will meet the current demand for gasoline. Biodiesel can be derived from both traditional and non-conventional sources with some modifications in order to meet the performance of diesel. The emission of CI engines causes adverse environmental impacts such as green-house gases, acid rain, ozone depletion, photochemical smog, etc. Biodiesel is the perfect replacement for fossil fuels. It can be prepared from vegetable oil and animal fats by the transestesterification process. National biofuel policy 2009 set the goal of meeting 20% of diesel demand with biodiesel. India is planning to mix 5% biodiesel with diesel." India has focused primarily on Jatropha. There are, however, around 400 species of non-edible oil seeds bearing trees in our country, where thrust must be made derived the biofuel. Based on the techno-economic viability for the development of biofuels in this paper thrust are made to review a different kind of biofuel utility and their impact on CI engine efficiency that explorer in the last decades. [ABSTRACT FROM AUTHOR]