Uranium transport models
Uranyl transport models prepared using WPHAST models show impact of different model assumptions on uranyl mobility, See Mahoney, Jakubowski, and Cadle, 2009 for details
Uranyl transport models prepared using WPHAST models show impact of different model assumptions on uranyl mobility, See Mahoney, Jakubowski, and Cadle, 2009 for details

Presentations / Publications

Bird, D.A., and Mahoney, J.J., 1994, Estimating post-mining pit lake geochemis­try utilizing geochemical and numerical modeling: Reprint of paper presented at 1994 Annual Meeting of Society for Mining, Metallurgy, and Exploration, Albuquerque, New Mexico, 5 p.

Bird, D.A., and Mahoney, J.J., 2000, Hydrogeochemical tools to define sources of ground-water inflow to surface and underground mines: Proceedings of the XXX IAH Congress on Groundwater: Past Achievements and Future Challenges, Cape Town, South Africa, p. 1091-1097.

Bursey, G.G., Mahoney, J.J., Gale, J.E., Dignard, S.E., Napier, W., Reihm, D., and Downing, B., 1997, Approach used to model pit filling and pit lake chemistry on mine closure - Voisey's Bay, Labrador: Paper presented at Fourth International Conference on Acid Rock Drainage, Vancouver, B.C., Proceedings, vol. 1, p. 255-276.

Coles, D.G., Mahoney, J.J., and Burnell, J.R., 1986, Observations of selected actinide and fission product chemistry during basalt-repository waste-package hydrothermal experiments containing spent fuel: Paper presented at Northwest Section Meeting of American Chemical Society, Portland, Oregon.

Emerson, D., Bessler, J., Podolski, M., and Mahoney, J., 2006, Hydrogeologic Characterization of the Gahcho Kué Diamond Project.  Presented at 59th Canadian Geotechnical Conference and 7th Joint CGS/IAH-CNC Groundwater Specialty Conference (seatoskygeo.ca), October 2006, Vancouver. Sea to Sky Geotechnique 2006, p. 1723-1728.

Howell, R.L., Ugorets V.I., and Mahoney, J.J., 2006, Challenges to Hydrogeologic Investigations in the Canadian North.  Presented at 59th Canadian Geotechnical Conference and 7th Joint CGS/IAH-CNC Groundwater Specialty Conference (seatoskygeo.ca), October 2006, Vancouver. Sea to Sky Geotechnique 2006, p. 1608-1612.

Langmuir, D., and Mahoney, J.J., 1984, Chemical equilibrium and kinetics of geochemical processes in ground water studies: in Hitchon, B., and Wallick, E., eds., Practical Applications of Ground Water Geochemistry, National Water Well Association, Dublin, Ohio.

Langmuir, D., and Mahoney, J.J., 1997, Geochemical controls on arsenic levels in some mine tailings and groundwaters associated with saturated zone tailings disposal: paper presented at International Symposium on Geology and the Environment GeoEnv '97, Istanbul, Turkey, September 1-5.

Langmuir, D., Mahoney, J.J., MacDonald, A.K., and Rowson, J., 1999, Predicting the arsenic source-term from buried uranium mill tailings: in Proceedings of Tailings and Mine Waste '99, Fort Collins, Colorado, 503-514.

Langmuir, D., Mahoney, J., MacDonald, A., and Rowson, J., 1999, Predicting arsenic concentrations in the porewaters of buried uranium mill tailings: Geochimica et Cosmochimica Acta, vol. 63, p. 3379-3394.

Langmuir, D., Mahoney, J.J., Slaughter, M., and Rowson, J.W., 2002, Controlling arsenic concentrations in buried uranium mill tailings: Goldschmidt Conference Abstracts 2002, p. A430.

Langmuir, D., Mahoney, J.J., and Rowson, J.W., 2002, Arsenic releases from buried uranium mill tailings at McClean Lake: Application of geochemical concepts and license approval by the Canadian Government:  Geological Society of America Annual Meeting.  Denver. Abstract 201-7.

Langmuir, D., Mahoney, J., and Rowson, J., 2006, Solubility products of amorphous ferric arsenate and crystalline scorodite (FeAsO4.2H2O) and their application to arsenic behavior in buried mine tailings: Geochimica et Cosmochimica Acta., vol. 70, p. 2942-2956.

Liu, H., Mahoney, J.J., and Langmuir, D., 2002, Further refinements of the Davis-Ritchie model of pyrite oxidation in geologic materials associated with mining. Geological Society of America Annual Meeting. Denver. Abstract 84-2.  POSTER  

Mahoney, J.J., 1989, Adsorption of strontium on kaolinite and montmorillonite at high ionic strengths: Ph.D. Dissertation, Colorado School of Mines.

Mahoney, J.J., 1998, Incorporation of coprecipitation reactions in predictive geochemical models:  in Proceedings of Tailings and Mine Waste '98, Fort Collins, Colorado, p. 689-697.

Mahoney, J.J., 2000, Geochemistry of Coal Bed Methane Discharge Waters - Powder River Basin, Wyoming.  Presented at Office of Surface Mining Bond Release Forum, Billings, Montana, September, 2000. 

Mahoney, J.J., 2001, Coprecipitation reactions – verification of computational methods in geochemical models: in Mining Impacted Pit Lakes 2000 Workshop Proceedings: a Multimedia CD Presentation. (Workshop held April 4–6, 2000 Reno, NV) United States Environmental Protection Agency Office of Research and Development. EPA/625/C-00/004. Session 4.  Updated and EXPANDED POWERPOINT PRESENTATION

Mahoney, J.J., 2008, Using Forensic Chemistry to Identify Sources of Mixed Plumes - Stable Isotopes of Water, AFCEE Technology Transfer Workshop. San Antonio TX.  (Power Point Presentation) please contact me for a copy.  

Mahoney, J.J., Cadle, S.A, and Jakubowski, R.T., 2009.  Uranyl adsorption onto hydrous ferric oxide – a re-evaluation for the diffuse layer model database.  Environmental Science and Technology. v. 43, no. 24, p. 9260-9266. DOI 10.1021/es901586w.

Mahoney, J.J., and Coles, D.G., 1986, Examination of spent fuel reactions under hydrother­mal conditions: Final Program and Abstracts, 1986 Fall Meeting of Materials Research Society.

Mahoney, J.J., and Jakubowski, R.T., 2008, Assessment of uranyl sorption constants on ferrihydrite – Comparison of model derived constants and updates to the diffuse layer model database.  in Merkel, B.J. and Hasche-Berger, A., eds., Uranium, Mining and Hydrogeology; Springer, Berlin, p. 919 – 928. (Presented at Uranium Mining and Hydrogeology Congress V, Freiberg, Germany - September 2008).

Mahoney, J.J., Jakubowski, R.T. and Cadle, S.A., 2009, Corrections to the diffuse layer model database for uranyl adsorption onto hydrous ferric oxide - Ramifications for solute transport modeling.  (Poster presented at U2009 Global Uranium Symposium, May 2009 Keystone, CO.) POSTER

Mahoney, J.J., and Howell, R.L., 2006, Presence of Tyrell Sea Water in Deep Ground Water Samples near James Bay, Ontario.  Presented at 59th Canadian Geotechnical Conference and 7th Joint CGS/IAH-CNC Groundwater Specialty Conference (seatoskygeo.ca), October 2006, Vancouver. Sea to Sky Geotechnique 2006, p. 1695-1700. 

Mahoney, J., and Langmuir, D., 1991, Adsorption of Sr on kaolinite, illite and montmorillonite at high ionic strengths, Radiochimica Acta, vol. 54, p. 139-144.

Mahoney, J., and Langmuir, D., 2002, The corrected solubility product of scorodite and its application to arsenic behavior in buried mine tailings. Geological Society of America Annual Meeting. Denver. Abstract 84-17.

Mahoney, J., Langmuir, D., Gosselin, N., and Rowson, J., 2005, Arsenic readily released to pore waters from buried mill tailings. Applied Geochemistry, Vol. 20 (5), p. 947 –959.

Mahoney, J., Langmuir, D., and Rowson, J., 2005, A method to measure arsenic readily released to pore waters from uranium mill tailings, in Merkel, B.J. and Hasche-Berger, A., eds., Uranium in the Environment - Mining Impact and Consequences, Springer, Berlin, p. 97 – 106. (Presented at Uranium Mining and Hydrogeology Congress IV, Freiberg, Germany - September 2005.)

Mahoney, J., Langmuir, D., Slaughter, M., and Rowson, J., 2005, Raffinate neutralization experiments at the McClean Lake Mill – removal of arsenic and nickel, in Merkel, B.J. and Hasche-Berger, A., eds., Uranium in the Environment - Mining Impact and Consequences, Springer, Berlin, p. 225 – 234. (Presented at Uranium Mining and Hydrogeology Congress IV, Freiberg, Germany - September 2005.)

Mahoney, J.J., Liu, H., Warner, J., and Sterrett, R.J., 1996, In-situ measurement of the rate of vinyl chloride degradation in a gravel aquifer: abstract and poster session presentation at the Conference on Intrinsic Remediation of Chlorinated Solvents, Salt Lake City, Utah, April 2.

Mahoney, J., Slaughter, M., Langmuir, D., and Rowson, J., 2007, Control of As and Ni releases from a uranium mill tailings neutralization circuit: Solution chemistry, mineralogy, and geochemical modeling of laboratory study results.  Applied Geochemistry, Vol. 22, (12) p. 2758 – 2776.

Sutphin, J.D, Atkinson, L.C., and Mahoney, J.J., 2006, Monitoring and Sampling of Groundwater from Beneath Deep Permafrost.  Presented at 59th Canadian Geotechnical Conference and 7th Joint CGS/IAH-CNC Groundwater Specialty Conference (seatoskygeo.ca), October 2006, Vancouver. Sea to Sky Geotechnique 2006, p. 1613-1618.