Abstract
Surface complexation model DLM was coupled with groundwater flow transport model to simulate the transport of U(VI) in shallow groundwaters around a uranium mill tailing site in southern China. The sorption of U(VI) onto clayey soils has a non-linear relationship with pH, reaching maximum around neutral pH and sharply decreasing under acidic and alkaline conditions. According to our modeling results, after 1000a of decommissioning, the vertical transport of U(VI) could be down to 19m, and the direction of transport turn horizontally; on the plane, the transport could extend 800m to west, 1500m to the south and 2000m to the north, with a total contaminated area up to about 9 km2.
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Wang, Y., Ma, T., Xu, L. (2002). A 3-D numerical modeling of reactive transport of U(VI) in shallow groundwaters: a case study at a uranium mill tailing site in southern China. In: Merkel, B.J., Planer-Friedrich, B., Wolkersdorfer, C. (eds) Uranium in the Aquatic Environment. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-55668-5_34
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DOI: https://doi.org/10.1007/978-3-642-55668-5_34
Publisher Name: Springer, Berlin, Heidelberg
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