Oil palm fronds have a high cellulose content, so they can be used as raw material for the manufacture of activated carbon because it is very effective at adsorption of waste. Unlicensed gold miners (PETI) in Kuantan Singingi Regency have polluted the water of the Kuantan River and caused a decrease in water quality. The purpose of the study was to test the ability of activated carbon to adsorb…