The use of Anthocephalus cadamba Miq which focuses on the wood makes other parts such as the fruit neglected. The fruit which contains cellulose can be used as a biosorbent in the form of activated charcoal to adsorb mercury ions in waters. The aim of this study was to determine the kinetics model and adsorption isotherm of mercury ion by the fruit biosorbent. Carbonized wind-dried Anthocephal…