Describe in brief Biofuel production with the help of a neat labeled diagram.

Explanation

(i) Biofuel is important among the renewable source of good energy.
(ii) Biofuel is produced by plants by photosynthesis where Carbohydrates and Oxygen is prepared using Solar energy.
(iii) These fuels are availabel is solid (Coal , dung , crop residue ) , liquid (Vegetable oils , alcohol ), gaseous (gobar gas , Coal gas) forms.
(iv) For biofuel production, biomass is harvested and transported for threshing . Later the cellulose obtained from the residues left after threshing is converted to glucose.
(v) The glucose is further converted to liquid fuel through fermentation , which is used for various purposes.
(vi) `CO_(2)` released during the burining of these biofuel which is again absorbed by plants for photosynthesis.