Tests of a system to exclude roots from buried radioactive waste in a warm, humid climate [electronic resource].
- Washington, D.C. : United States. Dept. of Energy, 1989. and Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
- Physical Description:
- 2 pages : digital, PDF file
- Additional Creators:
- Westinghouse Savannah River Company, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information
- Vegetation is commonly used to stabilize the ground covering buried waste sites. However, constituents of buried waste can be brought to the surface if the waste is penetrated by plant roots. An ideal waste burial system would allow the use of vegetation to stabilize the soil above the buried waste but would exclude roots from the waste. One system that shows considerable promise is a slow release encapsulation of a root growth inhibitor (Trifluralin). Projected lifetimes of the capsule are in the order of 100 years. The capsule is bonded to a geotextile, which provides an easy means of distributing the capsule evenly over the area to be protected. Vegetation grown in the soil above the barrier has provided good ground cover, although some decrease in growth has been found in some species. Of the species tested the sensitivity to the biobarrier, as measured by the distance root growth stops near the barrier, is bamboo> bahia grass> bermuda grass> soybean. Potential uses for the biobarrier at the Savannah River Site (SRS) include the protection of clay caps over buried, low-level saltstone and protection of gravel drains and clay caps over decommissioned seepage basins. Trails of the biobarrier as part of waste site caps are scheduled to begin during the next 12 months.
- Published through SciTech Connect., 12/31/1989., "wsrc-rp--89-16", " conf-890854--16", "DE92011178", 11. annual DOE low level waste management conference,Pittsburgh, PA (United States),22-24 Aug 1989., and Murphy, C.E. Jr.; Corey, J.C.; Adriano, D.C.; Griggs, R.D.; Decker, O.D.
- Funding Information:
- AC09-89SR18035 and AC09-76SR00001
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