Pengaruh Variasi Konsentrasi NaOH terhadap Nilai Kalor Briket Arang Tandan Kosong Kelapa Sawit

Abstract

Research has been conducted on the effect of NaOH concentration on the calorific value of oil palm empty fruit bunch charcoal briquettes. NaOH solution is used as a pretreatment material for oil palm empty fruit bunches charcoal. Oil palm empty fruit bunches are dried under the sun and carbonized for 1 hour to produce oil palm empty fruit bunches charcoal with 24% yield. Oil palm empty fruit bunches charcoal is characterized by SEM-EDX. Then the charcoal was soaked in the NaOH solution at a concentration variation of 0,1 N; 0,2 N; and 0,3 N for 24 hours. The charcoal is mixed with tapioca gel and the mixture is molded in a cylindrical mold. Each briquette is identified with a bomb calorimeter for calorific value. Briquettes with the highest caloric value are analyzed for quality based on SNI No.01/6325/2000 which includes calorific value, moisture content, ash content, volatile matter content, and fixed carbon content. The caloric value of charcoal briquettes without pretreatment is 5057 cal/g. The caloric value of charcoal briquettes with pretreatment NaOH 0,1 N; 0,2 N; and 0,3 N are respectively 5682 cal/g, 5707 cal/g and 5865 cal/g. The highest calorific value is found in charcoal briquettes with pretreatment NaOH 0,3 N. The results of charcoal SEM-EDX show that charcoal with pretreatment NaOH has a more open pore and higher carbon content compared to charcoal without pretreatment. Charcoal briquettes with pretreatment NaOH 0,3 N have a moisture content of 3.8315%, ash content of 11.0375%, volatile matter content of 25.801%, and fixed carbon content of 59.33%. Charcoal briquettes with pretreatment NaOH 0,3 N do not meet SNI No.01/6325/2000.