Search Results - "Scherer, Michelle M."

Spectroscopic Evidence for Fe(II)–Fe(III) Electron Transfer at Clay Mineral Edge and Basal Sites by Neumann, Anke, Olson, Tyler L, Scherer, Michelle M

“…Despite the importance of Fe redox cycling in clay minerals, the mechanism and location of electron transfer remain unclear. More specifically, there is some…”
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The Role of Defects in Fe(II)–Goethite Electron Transfer by Notini, Luiza, Latta, Drew E, Neumann, Anke, Pearce, Carolyn I, Sassi, Michel, N’Diaye, Alpha T, Rosso, Kevin M, Scherer, Michelle M

“…Despite substantial experimental evidence for Fe­(II)–Fe­(III) oxide electron transfer, computational chemistry calculations suggest that oxidation of sorbed…”
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Fe Electron Transfer and Atom Exchange in Goethite: Influence of Al-Substitution and Anion Sorption by Latta, Drew E, Bachman, Jonathan E, Scherer, Michelle M

“…The reaction of Fe(II) with Fe(III) oxides and hydroxides is complex and includes sorption of Fe(II) to the oxide, electron transfer between sorbed Fe(II) and…”
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Atom Exchange between Aqueous Fe(II) and Goethite: An Fe Isotope Tracer Study by Handler, Robert M, Beard, Brian L, Johnson, Clark M, Scherer, Michelle M

“…The reaction of aqueous Fe(II) with Fe(III) oxides is a complex process, comprising sorption, electron transfer, and in some cases, reductive dissolution and…”
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Fe(II)-Catalyzed Recrystallization of Goethite Revisited by Handler, Robert M, Frierdich, Andrew J, Johnson, Clark M, Rosso, Kevin M, Beard, Brian L, Wang, Chongmin, Latta, Drew E, Neumann, Anke, Pasakarnis, Timothy, Premaratne, W. A. P. J, Scherer, Michelle M

“…Results from enriched 57Fe isotope tracer experiments have shown that atom exchange can occur between structural Fe in Fe­(III) oxides and aqueous Fe­(II) with…”
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Determination of the Fe(II)aq–magnetite equilibrium iron isotope fractionation factor using the three-isotope method and a multi-direction approach to equilibrium by Frierdich, Andrew J., Beard, Brian L., Scherer, Michelle M., Johnson, Clark M.

“…Magnetite is ubiquitous in the Earth's crust and its presence in modern marine sediments has been taken as an indicator of biogeochemical Fe cycling. Magnetite…”
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Coal Fly Ash as a Source of Iron in Atmospheric Dust by Chen, Haihan, Laskin, Alexander, Baltrusaitis, Jonas, Gorski, Christopher A, Scherer, Michelle M, Grassian, Vicki H

“…Anthropogenic coal fly ash (FA) aerosol may represent a significant source of bioavailable iron in the open ocean. Few measurements have been made that compare…”
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Iron isotope fractionation between aqueous Fe(II) and goethite revisited: New insights based on a multi-direction approach to equilibrium and isotopic exchange rate modification by Frierdich, Andrew J., Beard, Brian L., Reddy, Thiruchelvi R., Scherer, Michelle M., Johnson, Clark M.

“…The Fe isotope compositions of naturally occurring Fe oxide minerals provide insights into biogeochemical processes that occur in modern and ancient…”
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Fe Atom Exchange between Aqueous Fe2+ and Magnetite by Gorski, Christopher A, Handler, Robert M, Beard, Brian L, Pasakarnis, Timothy, Johnson, Clark M, Scherer, Michelle M

“…The reaction between magnetite and aqueous Fe2+ has been extensively studied due to its role in contaminant reduction, trace-metal sequestration, and microbial…”
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Iron isotope fractionation between aqueous ferrous iron and goethite by Beard, Brian L., Handler, Robert M., Scherer, Michelle M., Wu, Lingling, Czaja, Andrew D., Heimann, Adriana, Johnson, Clark M.

“…The equilibrium Fe isotope fractionation factor between aqueous Fe(II) and goethite has been experimentally measured to be −1.05±0.08‰ in 56Fe/54Fe (2σ) at…”
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Abiotic reduction of uranium by Fe(II) in soil by Latta, Drew E., Boyanov, Maxim I., Kemner, Kenneth M., O’Loughlin, Edward J., Scherer, Michelle M.

“…► Abiotic reduction and immobilization of U(VI) occurs in a reduced Iowa soil. ► The U is immobilized as U(IV) and non-uranyl U(V) or U(VI) phases. ► Soil…”
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Simulated atmospheric processing of iron oxyhydroxide minerals at low pH: Roles of particle size and acid anion in iron dissolution by Rubasinghege, Gayan, Lentz, Robert W, Scherer, Michelle M, Grassian, Vicki H

“…A number of recent studies have shown that iron dissolution in Fe-containing dust aerosol can be linked to source material (mineral or anthropogenic),…”
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Reduction of PCE and TCE by magnetite revisited by Culpepper, Johnathan D, Scherer, Michelle M, Robinson, Thomas C, Neumann, Anke, Cwiertny, David, Latta, Drew E

“…Here we revisit whether the common mixed-valent Fe mineral, magnetite, is a viable reductant for the abiotic natural attenuation of perchloroethylene (PCE) and…”
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Effects of Bound Phosphate on the Bioreduction of Lepidocrocite (γ-FeOOH) and Maghemite (γ-Fe2O3) and Formation of Secondary Minerals by O’Loughlin, Edward J, Boyanov, Maxim I, Flynn, Theodore M, Gorski, Christopher A, Hofmann, Scott M, McCormick, Michael L, Scherer, Michelle M, Kemner, Kenneth M

“…Natural FeIII oxides typically contain a range of trace elements including P. Although solution phase and adsorbed P (as phosphate) have been shown to impact…”
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Effects of Oxyanions, Natural Organic Matter, and Bacterial Cell Numbers on the Bioreduction of Lepidocrocite (γ-FeOOH) and the Formation of Secondary Mineralization Products by O’Loughlin, Edward J, Gorski, Christopher A, Scherer, Michelle M, Boyanov, Maxim I, Kemner, Kenneth M

“…Microbial reduction of Fe(III) oxides results in the production of Fe(II) and may lead to the subsequent formation of Fe(II)-bearing secondary mineralization…”
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Fe(II) reduction of pyrolusite (β-MnO2) and secondary mineral evolution by Schaefer, Michael V., Handler, Robert M., Scherer, Michelle M.

“…Iron (Fe) and manganese (Mn) are the two most common redox-active elements in the Earth’s crust and are well known to influence mineral formation and…”
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Kinetics of Nitrate, Nitrite, and Cr(VI) Reduction by Iron Metal by Alowitz, Michael J, Scherer, Michelle M

“…The kinetics of nitrate, nitrite, and Cr(VI) reduction by three types of iron metal (Fe0) were studied in batch reactors for a range of Fe0 surface area…”
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Influence of Chloride and Fe(II) Content on the Reduction of Hg(II) by Magnetite by Pasakarnis, Timothy S, Boyanov, Maxim I, Kemner, Kenneth M, Mishra, Bhoopesh, O’Loughlin, Edward J, Parkin, Gene, Scherer, Michelle M

“…Abiotic reduction of inorganic mercury by natural organic matter and native soils is well-known, and recently there is evidence that reduced iron (Fe) species,…”
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Characterization and acid-mobilization study of iron-containing mineral dust source materials by Cwiertny, David M., Baltrusaitis, Jonas, Hunter, Gordon J., Laskin, Alexander, Scherer, Michelle M., Grassian, Vicki H.

“…Processes that solubilize iron in mineral dust aerosol may increase the amount of iron supplied to ocean surface waters, and thereby stimulate phytoplankton…”
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Photoreductive dissolution of Fe-containing mineral dust particles in acidic media by Fu, Hongbo, Cwiertny, David M., Carmichael, Gregory R., Scherer, Michelle M., Grassian, Vicki H.

“…In this study, the photoreductive dissolution of Fe‐containing mineral dust particles in acidic media is investigated. Photolysis experiments were performed…”
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