Pyrolysis of babool seeds (Acacia nilotica) in a fixed bed reactor and bio-oil characterization


Babool seeds were used as biomass feedstock to produce biocrude.

Pyrolysis was performed in a fixed-bed reactor.

Highest liquid yield from babool seed pyrolysis was 49%.

GC/MS analysis of bio-oil confirms the presence of oxygenated compounds with aliphatics and aromatics.


With the growing awareness of environmental issues, production of biofuel has a potential to provide an alternative source of renewable energy sources. In the present work, the effect of pyrolysis temperature, particle size and sweep gas flow rate (N2) was investigated for production of bio-oil from pyrolysis of babool seeds (Acacia nilotica). Optimum conditions obtained for the maximum liquid and bio-oil yield (∼49% & 38.3%, respectively) were 500 °C, 100 cm3/min sweep gas flow rate (N2) and particle size range upto 0.4 mm. Bio-oil with a calorific value of 36.45 MJ/kg was characterized by FT-IR, 1H NMR, GC/MS. The characterization of bio-oil indicates that it can be an alternative fuel for transportation sector.

Graphical abstract


  • Babool seed;
  • Pyrolysis;
  • Bio-oil;
  • FT-IR;
  • 1H NMR;
  • GC/MS

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