UTILIZATION OF COFFEE GROUNDS ACTIVATED CARBON BIOADSORBENT FOR RODHAMIN B REMOVAL

Abstract

Coffee grounds are coffee's starch essence that can be used as activated carbon. Because activated carbon has a high adsorption power and a huge surface area, its utilization is highly maximized. The purpose of this study is to give findings on the utilization of coffee grounds, which may be converted into activated carbon, as a bioadsorbent for the dye Rhodamine B. The study's findings indicate that the larger the surface area of the activated carbon, the greater the adsorption capacity. The production of activated carbon involves two processes: the carbonation process at a high temperature between 400 and 850°C to produce ideal carbon, and the physical activation process at a high temperature between 650 and 900°C. The percentage of Rhodamine B adsorbed by chemically and physically activated coffee grounds activated carbon was 89.1125% and 60.7923%, respectively, indicating that chemically activated carbon is more effective than physical activated carbon in adsorbing Rhodamine B dye waste.