Fig. 1 shows that for particle size dp1 heated at 50°C/min, the amount of char left at the end of pyrolysis
process is 22.47% for EFB and 24.49% for OPT. Larger particle size decreases the amount of biomass
conversion whereby the final residue is 32.28 % and 25.35% for EFB and OPT respectively as shown in
Fig. 3.