This letter presents ways for an improved discussion of the data provided in a recent article on aqueous removal of Cu-II complexes from aqueous solutions using metallic iron (Fe-0) by Gyliene and his co-workers. It is shown that the authors have furnished another brilliant validation of the concept that adsorption onto iron corrosion products and co-precipitation with iron corrosion products are the fundamental mechanisms of dissolved contaminant removal in Fe-0/H2O systems. (C) 2009 Elsevier B.V. All rights reserved.