Linear Free Energy Relationship for Predicting the Rate Constants of Munition Compound Reduction by the Fe(II)–Hematite and Fe(II)–Goethite Redox Couples
Paula A. Cárdenas-Hernández,
Kevin Hickey,
Dominic M. Di Toro
et al.
Abstract:Abiotic reduction by iron minerals is arguably the most
important
fate process for munition compounds (MCs) in subsurface environments.
No model currently exists that can predict the abiotic reduction rates
of structurally diverse MCs by iron (oxyhydr)oxides. We performed
batch experiments to measure the rate constants for the reduction
of three classes of MCs (poly-nitroaromatics, nitramines, and azoles)
by hematite or goethite in the presence of aqueous Fe2+. The surface area-normalized reduction rate consta… Show more
Naturally-occurring iron oxide nanoparticles provide reactive surfaces for the reduction of nitroaromatic compounds, which are common groundwater pollutants, by Fe(II). In many natural aquifer systems, iron oxide minerals continuously react...
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