RES³T - Rossendorf Expert System for Surface and Sorption Thermodynamics

Paper Details


Bibliographic Data:

Code: WMX02
Paper Type: Contribution to Proceeding
Author(s): Wang Y, Ma T, Xu L
Title: A 3-D numerical modeling of reactive transport of U(VI) in shallow groundwaters: A case study at an uranium mill tailing site in southern China
Book: Uranium in the aquatic environment: Proceedings of the international conference Uranium Mining and Hydrogeology III and the International Mine Water Association Symposium Freiberg, 15-21 September 2002
Year: 2002 Pages: 303-310
Editor(s): Merkel BJ, Planer-Friedrich B, Wolkerdsorfer C
Publisher: Springer   Town: Berlin
ISBN: 3-540-43927-7
Internal Storage: V1672
DOI: 10.1007/978-3-642-55668-5_34
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 1000 a of decommissioning, the vertical transport of U(VI) could be down to 19 m, and the direction of transport turn horizontally; on the plane, the transport could extend 800 m to west, 1500 m to the south and 2000 m to the north, with a total contaminated area up to about 9 km2.
Comment: U (VI) sorption onto montmorillonite; using DLM-model; pH 2-9

Surface Area   |   Site Density / Protolysis   |   Complex Formation   |   Formatted Citation