have been performed. The sago stem midrib firstly dried before carbonized using kiln drum
method. Subsequently, the sago stem midrib charcoal was activated using electric furnace
with 650 C of temperature for 5 minutes. Then, the activated briquette mashed and sieved by
80-mesh strainer before moulded into a compaction pressure. The pressure that applied
were 34.66 kg/cm 2, 69, 32 kg/cm 2 and 103, 98 kg/cm 2. Ignition time, burning rate, and …