Biosorption of copper (II) ions from synthetic aqueous solutions by drying bed activated sludge

► Dried activated sludge has been investigated for the removal of copper ions from aqueous synthetic solutions, in batch conditions. ► Copper uptake was time contact, initial copper concentration, initial pH solution and copper salt type dependent. ► Maximum copper uptake obtained was qm = 62.50 mg/g (0.556 mmol/g) under the investigated experimental conditions.