The 3rd G biofuel is mainly derived from algal biomass [16].Apart from algal biomass, bacteria, fungi, and yeast can also be used as feedstocks for 3rd G biofuel production [1, 15] (Fig. 1).Liquid biofuels are usually used in vehicles, but they can also be used in engines, fuel cells, etc. [17].Lastly, the 4th G biofuels produced from genetically …Web