Skip to Main Content
The use of dynamic modeling in assessing tritium phytoremediationAuthor(s): Karin T. Rebel; Susan J. Riha; John C. Seaman; Clinton d. Barton
Source: Environmental Geosciences, Vol. 12(4): 243-250
Publication Series: Miscellaneous Publication
PDF: View PDF (534 KB)
DescriptionTo minimize movement of tritium into surface waters at the Mixed Waste Management Facility at the Savannah River Site, tritiumcontaminated groundwater released to the surface along seeps in the hillside is being retained in a constructed pond and used to irrigate forest acreage that lies over the contaminated groundwater. Management of the application of tritium-contaminated irrigation water needs to be evaluated in the context of the large amount of rainfall relative to evapotranspiration, the strong seasonality in evapotranspiration, and intra-annual and interannual variability in precipitation in this region. A dynamic simulation model of water and tritium fluxes in the soil-plant-atmosphere continuum was developed to assess the efficiency (tritium transpired/tritium applied) of several irrigation management strategies. The model was parameterized using soil-water content data measured at 18 sites for the first year of the project and evaluated using tritium activity measurements made at the same 18 sites over 2.5 yr. The model was then used to evaluate several irrigation strategies. The 25-yr efficiencies (tritium transpired/tritiumapplied) of the irrigation strategies were related to the quantity of irrigation water applied. There was a strong (r2 = 0.99) negative linear relationship between irrigation water applied and efficiency. When a quasi-steady state has been reached in the system, the annual efficiencies of all the irrigation strategies were negatively correlated with annual rainfall. Quantification of these relationships allows irrigation managers to choose irrigation strategies based on desired long-term system efficiency, which differ with climate and irrigation strategy.
- You may send email to firstname.lastname@example.org to request a hard copy of this publication.
- (Please specify exactly which publication you are requesting and your mailing address.)
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
CitationRebel, Karin T.; Riha, Susan J.; Seaman, John C.; Barton, Clinton d. 2005. The use of dynamic modeling in assessing tritium phytoremediation. Environmental Geosciences, Vol. 12(4): 243-250
- Hydrologic effects of cottonwood trees on a shallow aquifer containing trichloroethene
- Estimating the ratio of pond size to irrigated soybean land in Mississippi: a case study
- An approach for using soil surveys to guide the placement of water quality buffers
XML: View XML