| dc.description.abstract | The waste produced by sweet orange peel (Citrus sinensis) contains lignocellulosic compounds which can be used as basic ingredients in making activated carbon. The purpose of this research are to determine how to produce activated carbon by using orange peel waste and the characteristic of activated carbon made from sweet orange peel waste. Orange peel waste is cleaned with flowing water and then dried. After that, it was carbonized in a furnace at a temperature of 300℃ for an hour and then chemically activated with ZnCl2 at varying concentrations were 10%, 15%, 20%, 25% and 30% for 24 hours. Adsorption of Pb (II) metal ions was carried out using a batch method where the apparatus used to measure Pb (II) metal content was an Atomic Absorption Spectrophotometer (AAS) instrumentation. Activated carbon with the highest reduction effectiveness was characterized the crystallinity pattern by using X-Ray Diffraction (XRD) and characterized based on SNI Number 06-3730-1995 which includes water content (%), ash content (%), and iodine absorption capacity (mg/g). The activated carbon obtained was further analyzed for its absorption capacity depending on the amount of contact time that occurred, namely, 6 hours, 12 hours and 24 hours. The percentage reduction in Pb (II) metal content with variations in ZnCl2 concentration was 39,77%; 49,06%; 56,79; 50,87%; and 49,11%. The percentage reduction in Pb (II) metal content with respect to the length of contact time was 85,5%; 96,7%; and 95,1%. The best activated carbon in this study was activated carbon which activated with ZnCl2 20% with an effectiveness of 56,79% and the optimum contact time occurred at an adsorption time of 12 hours with an effectiveness was 96,7%. The nature of the activated carbon obtained is amorphous with a water content was 3,6%; ash content value was 5,6%; and the iodine absorption value was 989,82 mg/g. | en_US |
