U.S. Department of Energy Office of Biological and Environmental Research

BER Research Highlights


Three Publications in the April Issue of ES&T Highlight Complex Physical, Chemical and Biological Processes that Influence Contaminant Transport
Published: May 12, 2008
Posted: June 06, 2008

To more accurately predict the mobility of contaminants in the environment and to devise new remediation techniques, DOE site managers need to understand the complex physical, chemical and biological processes that influence the mobility of metal and radionuclide contaminants in the subsurface. Three Office of Science, BER research activities, reported in the April 15, 2008, issue of Environmental Science & Technology ( ES&T), highlight the factors affecting the fate of radionuclide contaminants in subsurface environments. The articles highlight results obtained from three different DOE sites and demonstrate the importance of understanding complex biogeochemical processes influencing the mobility of radionuclide contaminants in the subsurface. In one article, researchers from the Lawrence Berkeley National Laboratory used a variety of synchrotron-based techniques to evaluate the potential of persistent iron (III) oxides present under reducing-conditions in sediment columns to reoxidize uranium to a more mobile phase. In a second article, researchers from the University of Massachusetts and the Pacific Northwest National Laboratory examined the sorption of oxidized uranium on cell surfaces in uranium-contaminated sediments during biostimulation as a contributing mechanism to immobilizing uranium in situ. In a third article, researchers from the Idaho National Laboratory examined a biological mechanism for stimulating calcite precipitation in subsurface sediments as means to facilitate precipitation, and therefore immobilization, of Sr-90 in subsurface environments.

  • Tokunaga, TK; Wan, JM; Kim, YM; et al. , Real-time X-ray absorption spectroscopy of uranium, iron, and manganese in contaminated sediments during bioreduction. ENVIRON. SCI. & TECHNOL., 42 (8): 2839-2844 APR 15 2008

  • N'Guessan, AL; Vrionis, HA; Resch, CT; et al., Sustained removal of uranium from contaminated groundwater following stimulation of dissimilatory metal reduction. ENVIRON. SCI. & TECHNOL., 42 (8): 2999-3004 APR 15 2008

  • Fujita, Y; Taylor, JL; Gresham, TLT; et al. , Stimulation of microbial urea hydrolysis in groundwater to enhance calcite precipitation. ENVIRON. SCI. & TECHNOL., 42 (8): 3025-3032

Contact: Robert T. Anderson, SC-23.4, (301) 903-5549
Topic Areas:

  • Research Area: Subsurface Biogeochemical Research

Division: SC-23.1 Climate and Environmental Sciences Division, BER
      (formerly SC-23.4 Environmental Remediation Sciences Division, OBER)

 

BER supports basic research and scientific user facilities to advance DOE missions in energy and environment. More about BER

Recent Highlights

May 10, 2019
Quantifying Decision Uncertainty in Water Management via a Coupled Agent-Based Model
Considering risk perception can improve the representation of human decision-making processes in age [more...]

May 09, 2019
Projecting Global Urban Area Growth Through 2100 Based on Historical Time Series Data and Future Scenarios
Study provides country-specific urban area growth models and the first dataset on country-level urba [more...]

May 05, 2019
Calibrating Building Energy Demand Models to Refine Long-Term Energy Planning
A new, flexible calibration approach improved model accuracy in capturing year-to-year changes in bu [more...]

May 03, 2019
Calibration and Uncertainty Analysis of Demeter for Better Downscaling of Global Land Use and Land Cover Projections
Researchers improved the Demeter model’s performance by calibrating key parameters and establi [more...]

Apr 22, 2019
Representation of U.S. Warm Temperature Extremes in Global Climate Model Ensembles
Representation of warm temperature events varies considerably among global climate models, which has [more...]

List all highlights (possible long download time)