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

BER Research Highlights

New Insight into the Mechanism of Plutonium Transport in the Environment
Published: March 03, 2011
Posted: April 07, 2011

The potential migration of plutonium in the environment is a concern at DOE sites such as the Hanford Nuclear Reservation and the Nevada Test Site, as well as an issue in nuclear waste disposal for nuclear energy development. Using a number of transmission electron microscopy techniques Lawrence Livermore National Laboratory researchers and collaborating Clemson University scientists have provided important new understanding of the formation and the biogeochemical mechanisms controlling plutonium migration. Once thought immobile in the subsurface, it has been recently recognized that plutonium is capable of being transported with the colloidal faction of groundwater. The researchers examined the interaction of plutonium nanocolloids with environmentally relevant minerals such as iron-containing goethite and silicon-containing quartz. The studies revealed the molecular basis of potential binding through epitaxial growth between the plutonium nanocolloids and colloid goethite that may be a possible mechanism for enhanced plutonium transport. The results improve our understanding of how molecular-scale behavior at the mineral-water interface may facilitate transport of plutonium at the field scale, providing important molecular-level input to improve contaminant transport models and the prediction of plutonium behavior.

Reference: Powell, B. A., Z. Dai, M. Zavarin, P. Zhao, and A. B. Kersting. 2011. "Stabilization of Plutonium Nano-Colloids by Epitaxial Distortion on Mineral Surfaces," Environmental Science and Technology 45, 2698–2703. DOI:dx.doi.org/10.1021/es1033487. (Reference link)

Contact: Arthur Katz, SC-23.2, (301) 903-4932
Topic Areas:

  • Research Area: Subsurface Biogeochemical Research
  • Research Area: Research Technologies and Methodologies

Division: SC-23.1 Climate and Environmental Sciences Division, BER


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)