ENVRMonday, March 26, 2007

8:30 AM-12:30 PM McCormick Place South -- Room S403B, Level 4, Oral
Abiotic and Biotic Factors Affecting Contaminant Transformation at Iron Oxide Surfaces
Green Rusts and Uranium Complexation/Reduction
Organizer:Michael L. McCormick
Organizer, Presidings:Daniel E. Giammar
Edward J. O'Loughlin
8:30 AMIntroductory Remarks
8:35 AMContaminant interactions with green rusts: Abiotic and biotic pathways
Michelle M. Scherer, Hashim Ali, Maxim I. Boyanov, John D. Coates, Christopher A. Gorski, Kenneth M. Kemner, Philip Larese-Casanova, Drew E. Latta, Edward J. O'Loughlin, Sharon L. Smith, Marty St. Clair, Karrie A. Weber
9:20 AMMechanisms of U(VI) uptake and reduction by carbonate, sulfate and chloride green rusts studied by XAFS
Maxim I. Boyanov, Edward J. O'Loughlin, Sharon L. Smith, Shelly D. Kelly, Drew E. Latta, Bruce D. Ravel, Marty St. Clair, Michelle M. Scherer, Kenneth M. Kemner
9:45 AMEffect of uranium complexation on aging of iron oxyhydroxides
Gary P. Halada, Michael Cuiffo, A. J. Francis, Cleveland J. Dodge
10:10 AMIntermission
10:30 AMCoupled processes involved in the heterogeneous reduction of U(VI) by Fe(II) at Fe(III)-oxide surfaces
William D. Burgos, Je-Hun Jang, Brian A. Dempsey
11:15 AMReduction of uranium under abiotic iron reducing conditions: A macroscopic and spectroscopic study
Vasso G. Alexandratos, Thilo Behrends, Philippe Van Cappellen
11:40 AMX-ray micro(spectro)scopy investigations of transformations at the mineral-metal-microbe interface
Kenneth M. Kemner, Terry J. Beveridge, Maxim I. Boyanov, Russell E. Cook, Alice Dohnalkova, Jim K. Fredrickson, Susan Glasauer, Shelly D. Kelly, Barry Lai, Matthew J. Marshall, Edward J. O'Loughlin, Bruce D. Ravel, Deirdre Sholto-Douglas
12:05 PMGeochemical and mineralogical controls on the oxidation of biogenic uraninite by ferrihydrite
Matthew Ginder-Vogel, Scott Fendorf

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The 233rd ACS National Meeting, Chicago, IL, March 25-29, 2007