PalmKernelShell composition of PalmKernelShell Moisture wt% 16.8 Mineral wt% 1.6 Volatile matter content wt% 73.9 Fixed carbon content wt% 17.3 Calorific value Kcal/ kg 4100~ 4300 Al2o3 wt% 0.92 SiO3 wt% 4.1 CaO wt% 12 MgO wt% 21 Fe 2O3 wt% 0.92