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Composition, stability, and measurement of reduced uranium phases for groundwater bioremediation at Old Rifle, CO
Reductive biostimulation is currently being explored as a possible remediation strategy for uranium (U) contaminated groundwater, and is currently being investigated at a field site in Rifle, CO, USA. The long-term stability of the resulting U(IV) phases is a key component of the overall performance and depends upon a variety of factors, including rate and mechanism of reduction, mineral associations in the subsurface, and propensity for oxidation. To address these factors, several approaches were used to evaluate the redox sensitivity of U: measurement of the rate of oxidative dissolution of biogenic uraninite (UO{sub 2(s)}) deployed in groundwater at Rifle, characterization of a zone of natural bioreduction exhibiting relevant reduced mineral phases, and laboratory studies of the oxidative capacity of Fe(III) and reductive capacity of Fe(II) with regard to U(IV) and U(VI), respectively.
Date:
October 15, 2011
Creator:
Campbell, K. M.; Davis, J. A.; Bargar, J.; Giammar, D.; Bernier-Latmani, R.; Kukkadapu, R. et al.
System:
The UNT Digital Library
Abraham Model Correlations for Transfer of Neutral Molecules and Ions to Sulfolane
Article on Abraham model correlations for the transfer of neutral molecules and ions to sulfolane.
Date:
October 15, 2011
Creator:
Stephens, Timothy W.; De la Rosa, Nohelli E.; Saifullah, Mariam; Ye, Shulin; Chou, Vicky; Quay, Amanda N. et al.
System:
The UNT Digital Library
The transfer of neutral molecules, ions and ionic species from water to benzonitrile; comparison with nitrobenzene
Article on the transfer of neutral molecules, ions and ionic species from water to benzonitrile and a comparison with nitrobenzene.
Date:
October 15, 2011
Creator:
Acree, William E. (William Eugene) & Abraham, M. H. (Michael H.)
System:
The UNT Digital Library