Instrumentation of a waste-rock pileInstrumentation of a test-scale waste-rock pile.

Sinclair, S.A., Pham, N., Amos, R.T., Blowes, D.W., Sego, D.C., Smith, L. (2015). Influence of Freeze-Thaw Dynamics on Internal Geochemical Evolution of Low Sulfide Waste Rock. Applied Geochemistry, 61, 160-174.

Langman, J.B., Blowes, D.W., Sinclair, S.A., Krentz, A., Amos, R.T., Smith, L.J.D., Pham, N.H., Sego, D.C., Smith, L. (2015). Early evolution of weathering and sulfide depletion of a low-sulfur, granitic, waste rock in an Arctic climate: a laboratory and field site comparison. Accepted J. Geochemical Exploration May 2015.

Ng, G.-H. C., Bekins, B.A., Cozzarelli, I.M., Baedecker, M.J., Bennett, P.C., Amos, R.T. Herkelrath, W. (2015). Reactive Transport Modeling of Geochemical Controls on Secondary Water Quality Impacts at a Crude Oil Spill Site near Bemidji, MN. Water Resources Research DOI: 10.1002/2015WR016964.

Jamieson-Hanes, J.H., Amos, R.T., Blowes, D.W. Ptacek, C.J. (2015). Dual mechanism conceptual model for Cr(VI) isotope fractionation during reduction by zero-valent iron under saturated flow conditions. Environmental Science & Technology, 49, 5467-5475.

Amos, R.T., Blowes, D.W., Bailey, B.L., Sego, D.C., Smith, L., Ritchie, A.I.M. (2015). Waste-Rock hydrogeology and geochemistry. Applied Geochemistry, 57, 140-156.

Jamieson-Hanes, J.H., Lentz, A.M., Amos, R.T., Ptacek, C.J., Blowes, D.W. (2014). Examination of Cr(VI) treatment by zero-valent iron using in situ, real-time X-ray absorption spectroscopy and Cr isotope measurements. Geochimica et Cosmochimica Acta, 142, 299-313.

Wanner, C., Druhan, J.L., Amos, R.T., Alt-Epping, P., Steefel, C.I. (2014). Benchmarking the simulation of Cr isotope fractionation. In press; Computational Geosciences.

Ng, G.-H. C., Bekins, B.A., Cozzarelli, I.M., Baedecker, M.J., Bennett, P.C., Amos, R.T. (2013). A Mass Balance Approach to Investigating Geochemical Controls on Secondary Water Quality Impacts at a Crude Oil Spill Site near Bemidji, MN. Journal of Contaminant, Hydrology, 164, 1-15. 

Weber, A., Ruhl, A.S., Amos, R.T. (2013). Investigating dominant processes in ZVI permeable reactive barriers using reactive transport modeling. Journal of Contaminant Hydrology, 151, 68-82.

Bilardi, S., Amos, R.T., Blowes, D.W., Calabro, P.S., Moraci, N. (2013). Reactive Transport Modeling of ZVI Column Experiments for Nickel Remediation. Ground Water Monitoring and Remediation, 33, 97-104. DOI: 10.1111/j.1745-6592.2012.01417.

Pham, N.H., Sego, D.C., Arenson, L.U., Blowes, D.W., Amos, R.T., Smith, L. (2013). The Diavik Waste Rock Project: Measurement of the thermal regime of a waste rock pile in a permafrost environment. Applied Geochemistry, 36, 234-245.

Chi, X.*, Amos, R.T., Stastna, M., Blowes, D.W., Sego, D.C., Smith, L. (2013) Implications of wind-induced gas transport in a waste rock pile. Applied Geochemistry, 36, 246-255.

Mayer, K.U., Amos, R.T., Molins, S., Gérard, F. (2012). Reactive transport modeling in variably saturated media with MIN3P: Basic model formulation and model enhancements. in   Groundwater Reactive Transport Models, editors Zhang, F, Yeh, G-T, Parker, J. Bentham Open E-Books. DOI: 10.2174/97816080530631120101       

Jamieson-Hanes, J.H., Amos, R.T., Blowes, D.W. (2012). Chromium Isotope Fractionation During Reduction of Cr(VI) Under Saturated Flow Conditions. Environmental Science & Technology, 46, 13311–13316.

Amos, R.T., Bekins, B.A., Cozzarelli, I.M., Voytek, M., Kirshtein, J., Jones, E.J.P., Blowes, D.W. (2012) Methane oxidation in a crude oil contaminated aquifer: Part II – Evidence for coupling to oxygen and to iron reduction. Geobiology, 10, 506-517.

Jeen, S.-W., Amos, R.T., Blowes, D.W. (2012). Modeling Gas Formation and Mineral Precipitation in a Granular Iron Column. Environmental Science & Technology, 46, 6742–6749.

Amos, R.T., Bekins, B.A., Delin, G.N., Cozzarelli, I.M., Blowes, D.W. (2011). Methane oxidation in a crude oil contaminated aquifer: Part I – Delineation of fringe reaction zones by high resolution sampling and cluster analysis. Journal of Contaminant Hydrology, 125, 13-25.

Gibson, B., Amos, R.T., Blowes, D.W.  (2011) Reactive transport modeling of isotope fractionation in permeable reactive barriers. Environmental Science & Technology 45, 2863–2870.

Stewart, B.D., Amos, R.T., Fendorf. S. (2011). Effect of Uranium(VI) Speciation on Simultaneous Microbial Reduction of Uranium(VI) and Iron(III).  Journal of Environmental Quality, 40, 90-97.

Stewart, B.D., Amos, R.T., Nico, P.S., Fendorf, S. (2011). Influence of uranyl speciation and iron oxides on uranium biogeochemical redox reactions. Geomicrobiology Journal, 28, 444-456.

Molins, S., Mayer, K. U., Amos, R. T., Bekins, B.A. (2010), Vadose zone attenuation of organic compounds at a crude oil spill site - Interactions between biogeochemical reactions and multicomponent gas transport. Journal of Contaminant Hydrology, 112, 15-29, doi:10.1016/j.jconhyd.2009.09.002.

Amos, R.T., Blowes, D.W., Smith, L., Sego, D.C. (2009). Measurement of wind induced pressure gradients in a waste rock pile. Vadose Zone Journal, 8, 953-962. doi:10.2136/vzj2009.0002.

Amos, R.T., Blowes, D.W. (2008). Versatile direct-push profiler for the investigation of volatile compounds near the water table. Water Resources Research, 44, W00D17, doi:10.1029/2008WR006936.

Williams, R.L., Mayer, K.U., Amos, R.T., Blowes, D.W., Ptacek, C.J. (2007). Using dissolved gas analysis to investigate the performance of an organic carbon permeable reactive barrier for the treatment of mine drainage. Applied Geochemistry, 22, 90-108.

Amos, R.T., Mayer, K.U. (2006b). Investigating ebullition in a sand column using dissolved gas analysis and reactive transport modelling. Environmental Science & Technology, 40, 5361-5367.

Amos, R.T., Mayer, K.U. (2006a). Investigating the role of gas bubble formation and entrapment in ontaminated aquifers: Reactive transport modelling. Journal of Contaminant Hydrology, 87, 123-154.

Amos, R. T., Mayer, K. U., Bekins, B. A., Delin, G. N., Williams, R. L. (2005). Use of dissolved and vapor-phase gases to investigate methanogenic degradation of petroleum hydrocarbon contamination in the subsurface. Water Resources Research, 41, W02001, doi:10.1029/2004WR003433.

Amos, R.T., Mayer, K.U., Blowes, D.W., Ptacek, C.J. (2004). Reactive transport modeling of column experiments for the remediation of acid mine drainage. Environmental Science & Technology, 38, 3131-3138.

Amos, R.T., Henderson, G.S. (2003). The effects of alkali cation mass and radii on the density of alkali germanate and alkali germanophosphate glasses. Journal of Non-Crystalline Solids, 331, 108-121.

Henderson, G.S., Amos, R.T. (2003). The structure of alkali germanophosphate glasses by Raman spectroscopy. Journal of Non-Crystalline Solids, 328, 1-19.