ENVRMonday, March 26, 2007

1:30 PM-5:10 PM McCormick Place South -- Room S403B, Level 4, Oral
Abiotic and Biotic Factors Affecting Contaminant Transformation at Iron Oxide Surfaces
Biotic Processes, Uranium, Arsenic
Organizer:Michael L. McCormick
Presiding:Maxim I. Boyanov
Organizer, Presiding:Daniel E. Giammar
1:30 PMIntroductory Remarks
1:35 PMRedox transformations of metals and radionuclides: Unraveling biotic and abiotic mechanisms through geomicrobiological studies
Jon R. Lloyd
2:20 PMQuantitatively describing and predicting electron balance between competitive iron and uranium reduction
Brandy D. Stewart, Peter S. Nico, Rich Amos, Scott Fendorf
2:45 PMComparison of arsenic removal from groundwater by iron oxide coated sand: Mechanisms, kinetics and influence of anions
S. R. Kanel, O. K. Hartzog, V. A. Loganathan, M. O. Barnett, T. P. Clement
3:10 PMIntermission
3:30 PMTransformation and mobilization of arsenic adsorbed on granular ferric hydroxide under bioreductive conditions
Souhail R. Al-Abed, Gautham Jegadeesan, Patricio Pinto
3:55 PMCatalytic effect of arsenic on iron reduction in freshwater sediments
Stephanie Chow, Martial Taillefert
4:20 PMBiologically-enhanced sequestration of phosphate in iron-enriched sediments
Lindsay Sandersfeld, Maureen Clayton, Edward J. Brown
4:45 PMHow the oxidation of Fe(II) affects cadmium immobilization by bacterial surfaces
Xavier Châtellier, Mohamad Fakih, Christopher J. Daughney

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