Characterization of liquid and solid product from pyrolysis of Pongamia glabra deoiled cake

In the present study, a new feedstock, Pongamia glabra deoiled cake (PGDC), is reported for pyrolysis. Experiments were conducted in a laboratory scale fixed-bed pyrolyzer at temperatures ranging from 350 to 600 °C with varying heating rates of 10, 20, 40 °C/min in nitrogen atmosphere. The highest liquid yield of 30.60% was observed at 500 °C with heating rate of 40 °C min−1. The biochar obtained had a porous structure and was characterized by powder X-ray diffraction (XRD), Scanning electron microscopy (SEM) and Fourier Transform Infrared (FTIR) spectroscopy along with elemental analysis. The representative bio-oil sample was characterized by CHN analyzer, GC–MS, NMR and FTIR spectroscopy. The bio-oil has a calorific value of 28.19 MJ/kg and contains a higher amount of aliphatic compounds. The present investigation suggests that within the realm of biomass energy conversion technologies the PGDC can be used as a feedstock for pyrolysis conversion, thereby serving the demand of second generation biofuels.