PENGARUH VARIASI SUHU AKTIVASI FISIKA TERHADAP PEMBUATAN ELEKTRODA KARBON DARI LIMBAH BIJI ALPUKAT

Abstract

The carbon electrode from avocado seed biomass material has been successfully made. The manufacture of carbon electrodes begins with sample preparation, precarbonization processes, crushing using a mortar and ball milling, sieving carbon powder with a size of 53 μm. The pre-carbonized powder is chemically activated using a KOH 0.1 M activator and continued by pellet forming by using Hydraulic Press. The carbonization process is carried out at a temperature of 600˚C using N2 gas and physical activation with temperature variations, namely 700˚C, 800˚C and 900˚C using CO2 gas. The Shrinkage of carbon mass was 24,07% and resulted in carbon powder. The shrinkage density values of each carbon electrode for physical activation temperatures of 700˚C, 800˚C, and 900˚C were 25,52%, 27,56%, and 37,42%.The highest density shrinkage value occurred at a temperature of 900 at 31.76%.