Activated carbon was produced from Cocos nucifera (coconut) fibers by carbonization and activation processes. The sample first pretreated before processes at 450°C 700°C respectively in an electric furnace. Chemical using Potassium hydroxide (KOH) 4:1 (weight basis) carried out to increase the activated adsorption properties. element contained analyzed Energy Dispersive Spectroscopy (EDS) while...