Physico-chemical properties of chars obtained in the co-pyrolysis of waste mixtures

► Multistep upgrading of chars obtained in the co-pyrolysis of waste mixtures. ► Assessment of their valorisation as precursors of adsorbents. ► Upgrading treatment allowed an efficient decontamination of the pyrolysis chars. ► Chars are meso- and macroporous materials with adsorption capacity to bulky molecules.