Characterization of Activated Carbon from Melinjo (Gnetum gnemon) Shells with Chemical-Physical Activation

—The synthesis of activated carbon derived from biomass melinjo shells has been carried out This research makes activated carbon from the shell of melinjo with active chemicals and chemical-physics so that it can distinguish the activated carbon produced. The carbonization process was carried out at 400 o C, for 15 minutes. The process continues by activating the chemical with a 65% KOH activator by returning the activator mass and activated carbon 4: 1. The activated process is carried out by immersion 24 hours then stirred at ± 110 o C for 5 hours. Furthermore, physics was carried out at variations in temperature of 500 o C, 550 o C, 600 o C and 650 o C for 1 hour. Based on the results of research on activated carbon with active physics at a temperature of 550 o C, the best results were obtained by producing an iodine number of 695.53 mg / g, water content of 4.38%, ash content of 5.955% and area of 412.33 m 2 / g.