Despite the amount of data available on investigating the process of aqueous contaminant removal by metallic iron (Fe(0)), there is still a significant amount of uncertainty surrounding the design of Fe(0) beds for laboratory testing to determine the suitability of Fe(0) materials for field applications. Available data were obtained under various operating conditions (e.g., column characteristi...

The amendment of the subsurface with nanoscale metallic iron particles (nano-Fe(0)) has been discussed in the literature as an efficient in situ technology for groundwater remediation. However, the introduction of this technology was controversial and its efficiency has never been univocally established. This unsatisfying situation has motivated this communication whose objective was a comprehe...

The interpretation of processes yielding aqueous contaminant removal in the presence of elemental iron (e.g. in Fe(0)/H(2)O systems) is subject to numerous complications. Reductive transformations by Fe(0) and its primary corrosion products (Fe(II) and H/H(2)) as well as adsorption onto and co-precipitation with secondary and tertiary iron corrosion products (iron hydroxides, oxyhydroxides, and...

Chemical reduction has long dominated thinking about the mechanism of aqueous contaminant removal in the presence of metallic iron (e.g. Fe/H2O systems). However, a large body of experimental evidence indicates that chemical reduction is not adequate to satisfactorily explain the efficiency of Fe/H2O systems for several substances or classes of substances. By contrast, the alternative approach,...

Participation of metallic iron in the processes of natural diamond formation has recently been suggested based on experimental studies, as well as the observation of native iron inclusions in natural diamond. The redox conditions of diamond-producing metal-carbon melts in the Earth’s mantle are therefore of interest. We calculated the values of oxygen fugacity, corresponding to the equilibrium ...