Cellulosic Ethanol is a type of  biofuel which is produced from non edible parts of plants, wood and shrubs and grasses. Cellulose is available for free, all around the world as it don't even require any plantation, it is already present in every type of plants and trees.

Biofuel commonly known as green fuel are products made from biological materials which can be used as fuels instead of fossil fuels. It is a type of renewable liquid fuel derived from plant and animal materials, which are found to be more eco-friendly than the widely-used fossil fuels that clout most of the world.