Natural analogues to the conditions around a final repository for high-level radioactive wasteRadionuclide migration around uranium ore bodies in the Alligator Rivers Region of the Northern Territory of Australia — Analogue of radioactive waste repositories — A review
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Cited by (39)
The natural denudation rate of the lowlands near the Ranger mine, Australia: A target for mine site rehabilitation
2021, GeomorphologyCitation Excerpt :Results for this sub-catchment are in Table 2. Airey et al. (1982–83) and Airey (1986) calculated the downward migration of the weathering front at Jabiluka, Nabarlek and Ranger in rocks that host uranium mineralization. The open system model used by these authors assumes a steady state between migration of the weathering front, the total denudation, and the time-averaged position of the water table.
Fate of adsorbed arsenate during phase transformation of ferrihydrite in the presence of gypsum and alkaline conditions
2015, Chemical GeologyCitation Excerpt :Ferrihydrite also occurs in sediments receiving acid mine drainage and mine tailings, as exemplified at sites in Ontario, Canada (Mann and Fyfe, 1989; Jambor and Dutrizac, 1998) and Cornwall, England (Bowell and Bruce, 1995). Its presence is also reported in mine wastes ranging from coalfields in the USA (Bigham et al., 1990) to Pb–Zn tailings in England (Hudson-Edwards et al., 1996) to U–Th deposits in Australia (Airey, 1986; Milnes et al., 1992). Ferrihydrite can sequester trace metals and metalloids by surface adsorption (Michel et al., 2007) and thus controls the aqueous concentration of many toxic elements in surface and ground waters, including uranium (U) (Payne et al., 1994), copper and zinc (Johnson, 1986; Fuller and Davis, 1989), lead (Erel and Morgan, 1992), cadmium (Fuller and Davis, 1989), and arsenic (Coston et al., 1995; Belzile and Tessier, 1990; Fuller and Davis, 1989).
<sup>234</sup>U/<sup>238</sup>U signatures associated with uranium ore bodies: Part 1 Ranger 3
2013, Journal of Environmental RadioactivityCitation Excerpt :Isotopic fractionation between 238U and 234U has been used as a natural tracer to characterise water and material transport for over 30 years (Osmond et al., 1983; Laul and Smith, 1988; Ivanovich and Hamon, 1992; Porcelli and Swarzenski, 2003; Hubert et al., 2006) and was employed to study uranium transport in ground waters down gradient of uranium ore bodies in the Alligator Rivers region of northern Australia as natural analogues of radioactive waste repositories (Shirvington, 1979, 1980, 1983; Airey et al., 1982; Airey, 1986; Lowson et al., 1986; Short et al., 1988).
Mineral replacement reactions in naturally occurring hydrated uranyl phosphates from the Tarabau deposit: Examples in the Cu-Ba uranyl phosphate system
2012, Chemical GeologyCitation Excerpt :Apart from technically complex and highly expensive bioremediation methods (e.g. Bargar et al., 2008), in situ stabilization using reactive barriers which inorganically trigger the formation of insoluble uranium-bearing phases in oxidative conditions, is an option under scientific scrutiny (e.g. Naftz et al., 1999; Bostic et al., 2000; Fuller et al., 2002). Among the several possible inorganic mechanisms of uranium removal from a contaminated aqueous fluid, the precipitation of low-solubility uranyl phosphates (e.g. Airey, 1986; Fuller et al., 2002; Jerden and Sinha, 2003) presents several technical–economical advantages. For instance, stability fields well within most natural surface and groundwater conditions (mildly acidic, atmospherically buffered pO2 and pCO2, low temperature, etc.), extremely low mineral reactivity, and cheaper, simpler system maintenance.
Dating of chemical weathering processes by in situ measurement of U-series disequilibria in supergene Fe-oxy/hydroxides using LA-MC-ICPMS
2006, Chemical GeologyCitation Excerpt :U isotopic compositions similar to those presented here have been measured during experimental dissolution of uraninite (Eyal and Fleischer, 1985), in groundwater free of colloidal matter from the Koongarra and Nabarlek U-deposits (Short et al., 1988), and in other U- and Th-rich orebodies (Bonotto, 1998). The 234U/238U AR of groundwater collected near the weathering profiles also shows limited fractionation between the U-isotopes (234U/238U = 1.051 ± 0.006), consistent with previously measured values near the Ranger minesite (Airey, 1986), and with those measured in the microcrystalline Fe-oxy/hydroxides. This suggests that the U mineralization beneath the weathering profiles is the primary source of U in the Ranger Fe-oxy/hydroxides, and that contributions from other sources are not required.
Review on subsurface colloids and colloid-associated contaminant transport in saturated porous media
2006, Advances in Colloid and Interface Science