The author used a recent article on lindane (gamma-hexachloro-cyclohexane) reductive dechlorination by Fe/Pd bimetallics to point out that many other of published works in several journals do not conform to the state-of-the-art knowledge on the mechanism of aqueous contaminant removal by metallic iron (e.g. in Fe-0/H2O systems). It is the author's view that the contribution of adsorbed Fe-II to the process of contaminant reduction has been neglected while discussing the entire process of contaminant reduction in the presence of bimetallics. (C) 2011 Elsevier B.V. All rights reserved.