Pakistan has a large agricultural sector producing enormous waste of no current economic use. These agricultural wastes are an important source of energy that can be used to generate bio-fuel, using relatively small biomass processing units, which can route all waste from the surrounding agricultural areas.

There are many ways in this era for conversion of biomass into useful fuels and chemicals. Pyrolysis is one of these thermochemical technologies that produce bio-fuels with good fuel-to-feed ratio. This work primarily focuses on the use of a catalytic fast pyrolysis system for selective agricultural residues namely orange, mango and watermelon peels and effect of feed size on production of bio-oil.

One of the product obtained using catalytic pyrolysis (different Si/Al ratio zeolite catalysts), i.e. biofuel is considered in respect of moisture, pH, heating value and fourier transform infrared spectroscopy (FTIR) and gas chromatography - mass spectrometry (GC-MS). It is noted that with the varied Si/Al ratio of the Zeolite catalyst, the char yield is reduced and of bio-fuel yield and quality is improved. In addition, properly sieved feed provide better yield than vice versa.