The heating value of EFB was determined by burning a weighed sample in an adiabatic oxygen-bomb calorimeter (model Parr 1341, USA) following the ASTM D240 method. EFB (0.5 g) was placed in a metal cup connected with a fuse wire; the cup was placed inside the bomb calorimeter and charged with oxygen to approximately 200 psi. The heat of combustion was computed from the temperature observations before, during, and after combustion, with proper allowance for thermochemical and heat transfer corrections. The bomb calorimeter was calibrated by combusting a known mass, m, of standard benzoic acid which has a known heat of combustion of 26.453 kJ/g. Three benzoic acid samples of size around one gram were tested. The calibration factor for the bomb calorimeter, C, was calculated from the benzoic acid calibrations as: C = (m26.453 kJ/g)/(Tmax − To).