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Filtering by: Creator Istok, Jonathan D. Decade 2010-2019

Transient groundwater chemistry near a river: Effects on U(VI) transport in laboratory column experiments

Creator:

Yin, Jun, Haggerty, Roy, Stoliker, Deborah L., Kent, Douglas B., Istok, Jonathan D., Greskowiak, Janek, and Zachara, John M.

Abstract:

In the 300 Area of a U(VI)-contaminated aquifer at Hanford, Washington, USA, inorganic carbon and major cations, which have large impacts on U(VI) transport, change on an hourly and seasonal basis near the Columbia River. Batch and column experiments were conducted to investigate the factors controlling U(VI) adsorption/desorption by changing...

Resource Type:

Article
In situ mobility of uranium in the presence of nitrate following sulfate-reducing conditions

Creator:

Paradis, Charles J., Jagadamma, Sindhu, Watson, David B., McKay, Larry D., Hazen, Terry C., Park, Melora, and Istok, Jonathan D.

Abstract:

Reoxidation and mobilization of previously reduced and immobilized uranium by dissolved-phase oxidants poses a significant challenge for remediating uranium-contaminated groundwater. Preferential oxidation of reduced sulfur-bearing species, as opposed to reduced uranium-bearing species, has been demonstrated to limit the mobility of uranium at the laboratory scale yet field-scale investigations are lacking....

Resource Type:

Article