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Physical Sciences and Mathematics Commons

Open Access. Powered by Scholars. Published by Universities.®

Geology

2013

University of Kentucky

Goethite

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Abiotic Nitrate And Nitrite Reactivity With Iron Oxide Minerals, Prakash Dhakal Jan 2013

Abiotic Nitrate And Nitrite Reactivity With Iron Oxide Minerals, Prakash Dhakal

Theses and Dissertations--Plant and Soil Sciences

Under iron (Fe3+)-reducing conditions where aqueous Fe2+ and unreduced solid Fe3+-oxides commonly coexist, soil Fe2+ oxidation has been shown to be coupled with nitrate (NO3-) reduction. One possible secondary reaction is the involvement of NO3- and nitrite (NO2-) with Fe-oxide minerals found in many natural environments. Yet, spectroscopic measurements and kinetic data on reactivity of NO3- and NO2- with Fe-containing oxide minerals such as goethite (a-FeOOH), and magnetite (Fe34) are not found in the literature. The reactivity of …