ABSTRACT Copper (Cu2+) is one of the heavy metals that is toxic to aquatic organisms and humans, copper tends to be dangerous when the concentration is more than 0.5 mg/L. To reduce the content of copper can be done by the adsorption process. Spent bleaching earth (SBE) and spent mushroom substrate (SMS) were used as adsorbents by combining them into composites to increase the adsorption a…