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Monitoring and Modeling of Sand-Bentonite Cover for ARD Mitigation

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Abstract

This paper deals with field measurements and hydraulic, oxygen transport and geochemical speciation modeling undertaken to evaluate the performance of a sand-bentonite test cover overlying a 20% sloping waste rock platform. A pit run (gravelly sand) layer protected the sand-bentonite layer. The study site was the Whistle Mine near Capreol, Ontario, Canada. The purpose of the study was to evaluate a number of test covers and select a final cover for the decommissioning of 7 million tonnes of acid-generating waste rock at the site. The sand-bentonite test plot and a control plot consisting of waste rock without cover were monitored over 3 years for water content, suction, soil temperature, gaseous oxygen concentrations, and water percolation. Air temperature, rainfall, snow pack and potential evaporation were also monitored. Finite element modeling showed very good agreement between modeled and measured cumulative precipitation, daily potential evaporation and cumulative evaporation, and to a lesser extent, the cumulative water percolation through the test cover. Due to construction difficulties in the field, the back of the waste rock platform was not covered with the test cover. This resulted in oxygen ingress from the back side of the waste rock. Oxygen transport modeling showed that if the entire waste rock pile had been covered, the daily oxygen flux would have been reduced by 90% to only 0.003 g/m2/day. Such low oxygen flux would minimize sulphide oxidation and hence acid generation in the waste rock. Aqueous equilibrium speciation modeling suggested that the concentrations of sulphate \(\left( {{\text{SO}}_{\text{4}}^{{\text{2 - }}} } \right)\), iron (Fe), and aluminum (Al) in percolate water in contact with waste rock were controlled by secondary minerals such as gypsum, alunite, and ferrihydrite.

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References

  • Adu-Wusu, C. (2005). Performance evaluation of engineered soil cover system. PhD Thesis, Department of Civil and Environmental Engineering. London, Ontario, Canada: The University of Western Ontario.

  • Adu-Wusu, C., & Yanful, E. K. (2006). Performance of engineered test covers on acid-generating waste rock at Whistle mine, Ontario. Canadian Geotechnical Journal, 43, 1–18.

    Article  CAS  Google Scholar 

  • Adu-Wusu, C., & Yanful, E. K. (2007). Post-closure investigation of engineered test covers on acid-generating waste rock at Whistle Mine, Ontario. Canadian Geotechnical Journal, 44, 496–506.

    Article  Google Scholar 

  • Adu-Wusu, C., Yanful, E. K., Lanteigne, L., & O’Kane, M. (2007). Prediction of the water balance of two soil cover systems. Geotechnical and Geological Engineering, 25, 215–237.

    Article  Google Scholar 

  • Allison, J. D., Brown, D. S., & Novo-Gradac, K. J. (1991). MINTEQA2/PRODEFA2, a geochemical assessment model for environmental systems: version 3.0 user’s manual. Washington, D.C.: US Environmental Protection Agency, Office of Research and Development.

    Google Scholar 

  • Benson, C. H., Bohnhoff, G. L., Apiwantragoon, P., Ogorzalek, A. S., Shackelford, C. D., & Albright, W. H. (2004). Comparison of model predictions and field data for an ET cover. In L. Hinshaw (Ed.), Tailings and mine waste ‘04: Proceedings of the eleventh tailings and mine waste conference, Vail, Colorado (pp. 137–142). Leiden: A. A. Balkema.

    Google Scholar 

  • Blowes, D. W., & Jambor, J. L. (1990). The pore-water geochemistry and the minerology of the vadose zone of sulfide tailings, Waite Amulet, Quebec. Applied Geochemistry, 5, 327–346.

    Article  Google Scholar 

  • Brenner, F. J. (2001). Use of constructed wetlands for acid mine drainage abatement and stream restoration. Water Science & Technology, 44, 449–454.

    CAS  Google Scholar 

  • Bussière, B., & Aubertin, M. (1999). Clean tailings as cover material for preventing acid mine drainage: an in situ experiment. In D. Goldsack, N. Belzile, P. Yearwood, & G. Hall (Eds.), Proceedings of the Sudbury‘99 conference, Mining and the Environmental II, Sudbury, Ontario (pp. 19–28). Sudburry, Ont: Centre in Mining and Mineral Exploration Research, Laurentian University.

    Google Scholar 

  • Bussière, B., Aubertin, M., & Chapuis, R. P. (2003). The behavior of inclined covers used as oxygen barriers. Canadian Geotechnical Journal, 40, 512–535.

    Article  Google Scholar 

  • Choo, L.-P., & Yanful, E. K. (2000). Water flow through cover soils using modeling and experimental methods. Journal of Geotechnical and Geoenvironmental Engineering, 126, 324–334.

    Article  Google Scholar 

  • Dawes, W. R., Zhang, L., Hatton, T. J., Reece, P. H., Beale, G. T. H., & Packer, I. (1997). Evaluation of a distributed parameter ecohydrological model (TOPOG_IRM) on a small cropping rotation catchment. Journal of Hydrology, 191, 64–86.

    Article  CAS  Google Scholar 

  • de Jonge, J., Xie, M., & Kolditz, O. (2003). Numerical implementation of thermally and hydraulically coupled processes in non-isothermal porous media. In O. Stephansson, J. A. Hudson, & L. Jing (Eds.), GeoProc 2003 — International conference on coupled T-H-M-C processes in geosystems: Fundaments, modelling, experiments & application (pp. 193–198). Stockholm: KTH.

    Google Scholar 

  • Egiebor, N. O., & Oni, B. (2007). Acid rock drainage formation and treatment: A review. Asia-Pacific Journal of Chemical Engineerin, 2, 47–62.

    Article  CAS  Google Scholar 

  • Evangelou, V. P. (1995). Pyrite oxidation and its control (p. 293). Boca Raton: CRC Press Inc.

    Google Scholar 

  • Fala, O., Molson, J., Aubertin, M., & Bussière, B. (2005). Numerical modeling of flow and capillary barrier effects in unsaturated waste rock piles. Mine Water and the Environment, 24, 172–185.

    Article  CAS  Google Scholar 

  • Fayer, M. J. (2000). UNSAT-H version 3.0: Unsaturated soil water and heat flow model, Theory, User manual, and Examples. Richland, Washington: Pacific Northwest National Laboratory.

    Google Scholar 

  • Flerchinger, G. N., & Saxton, K. E. (1989). Simultaneous heat and water model of a freezing snow-residue-soil system. I. Theory and development. Transactions of the ASAE, 32, 565–571.

    Google Scholar 

  • Fredlund, D. G., & Xing, A. (1994). Equations for the soil–water characteristic curve. Canadian Geotechnical Journal, 31, 521–532.

    Article  Google Scholar 

  • Gazea, B., Adam, K., & Kontopoulos, A. (1996). A review of passive systems for the treatment of acid mine drainage. Minerals Engineering, 9, 23–42.

    Article  CAS  Google Scholar 

  • GEO-SLOPE (1993). SEEP/W user’s manual. Calgary, Alberta: GEO-SLOPE International Limited.

    Google Scholar 

  • GEO-SLOPE (2004). VADOSE/W 2004 User’s guide. Calgary, Alberta: GEO-SLOPE International Limited.

    Google Scholar 

  • Healy, R. W. (1990). Simulation of solute transport in variably saturated porous media with supplemental information on modifications to the U.S. Geological Survey’s computer program VS2D. U.S. Geological Survey. Water-Resources Investigations Report, 90-4025, 125.

    Google Scholar 

  • Herbert, R. B. (2006). Seasonal variations in the composition of mine drainage-contaminated groundwater in Dalarna, Sweden. Journal of Geochemical Exploration, 90, 197–214.

    Article  CAS  Google Scholar 

  • Hollings, P., Hendry, M. J., Nicholson, R. V., & Kirkland, R. A. (2001). Quantification of oxygen consumption and sulphate release rates for waste rock piles using kenetic cells: Cluff lake uranium mine, northern Saskatchewan, Canada. Applied Geochemistry, 16, 1215–1230.

    Article  CAS  Google Scholar 

  • Hutson, J. L. (2003). Leaching Estimation and Chemistry Model (LEACHM), Model description and User’s Guide (Revision: Jan. 2003). Adelaide: School of Chemistry, Physics and Earth Sciences, the Flinders University of South Australia.

    Google Scholar 

  • Khire, M., Benson, C., & Bosscher, P. (2000). Cappilary barriers: design variables and the water balance. Journal of Geotechnical and Geoenvironmental Engineering, 126, 695–708.

    Article  Google Scholar 

  • Krahn, J. (2004). Vadose zone modeling with VADOSE/W: An engineering methodology. Calgary, Alberta: GEO-SLOPE International Ltd.

    Google Scholar 

  • Leonard, R. A., Knisel, W. G., & Still, D. A. (1987). GLEAMS: Groundwater loading effects of agricultural management systems. Transactions of the ASAE, 30, 1403–1418.

    Google Scholar 

  • Maltby, V., & Eppstein, L. K. (1994). Field-scale study of the use of paper industry sludges as hydraulic barriers in landfill cover systems. ASTM Special Technical Publication, n1142, 546–558.

    Google Scholar 

  • Meshkat, M., Warner, R. C., & Workman, S. R. (1999). Modeling of evaporation reduction in drip irrigation system. Journal of Irrigation and Drainage Engineering, 125, 315–323.

    Article  Google Scholar 

  • Nicholson, R. V., Gillham, R. W., Cherry, J. A., & Reardon, E. J. (1989). Reduction of acid generation in mine tailings through the use of moisture-retaining cover layers as oxygen barriers. Canadian Geotechnical Journal, 26, 1–8.

    CAS  Google Scholar 

  • O’Kane Consultants Inc. (2001). As-built report for the Inco Ltd., Whistle Mine acid-generating waste rock test cover plots. Internal report to INCO Ltd. Ontario Division. Saskatoon, Saskatchewan: O’Kane Consultants Inc.

    Google Scholar 

  • Or, D., & Wraith, J. M. (1999). Temperature effects on soil bulk dielectric permittivity measured by time domain reflectometry: A physical model. Water Resources research, 35, 371–384.

    Article  CAS  Google Scholar 

  • Penman, H. L. (1948). Natural evaporation from open water, bare soil and grass. Proceedings of the Royal Society of London, 193, 120–146.

    Article  CAS  Google Scholar 

  • Renken, K. (2006). Pilot study of soil-based covers for acid rock drainage mitigation. PhD Thesis, Department of Civil and Environmental Engineering. London, Ontario: The University of Western Ontario.

    Google Scholar 

  • Ritchie, A. I. M. (1994). Sulphide oxidation mechanisms: controls and rates of oxygen transport. In D. W. Blowes & J. L. Jambor (Eds.), Environmental geochemistry of sulphide mine-wastes (vol. 22). Quebec: Mineralogical Association of Canada.

    Google Scholar 

  • Schroeder, P. R., Aziz, N. M., Lloyd, C. M., & Zappi, P. A. (1994a). The hydrologic evaluation of landfill performance (HELP) model: User’s guide for version 3. EPA/600/R-94/168a, September 1994. Washington, DC: U.S. Environmental Protection Agency Office of Research and Development.

    Google Scholar 

  • Schroeder, P. R., Dozier, T. S., Zappi, P. A., McEnroe, B. M., Sjostrom, J. W., & Peyton, R. L. (1994b). The hydrologic evaluation of landfill performance (HELP) model: Engineering documentation for version 3. EPA/600/R-94/168b, September 1994. Washington, DC: U.S. Environmental Protection Agency Office of Research and Development.

    Google Scholar 

  • Simunek, J., Sejna, M., & van Genuchten, M. T. (1999). The HYDRUS-2D software package for simulating two-dimensional movement of water, heat, and multiple solutes in variably-saturated media, version 2.0. Riverside, CA: U.S. Salinity Laboratory, USDA, ARS.

    Google Scholar 

  • Simunek, J., van Genuchten, M. T., & Sejna, M. (2005). The HYDRUS-1D software package for simulating the movement of water, heat, and multiple solutes in variably saturated media, version 3.0, HYDRUS software series 1. Riverside, CA: Department of Environmental Sciences, University of California Riverside.

    Google Scholar 

  • Simunek, J., Vogel, T., & van Genuchten, M. T. (1994). The SWMS_2D code for simulating water flow and solute Transport in two-dimensional variably saturated media, Version 1.21. Research report No. 132. Riverside, CA: U.S. Salinity Laboratory, USDA, ARS.

    Google Scholar 

  • Topp, G. C., Davis, J. L., & Annan, A. P. (1980). Electromagnetic detection of soil water content: measurements in coaxial transmission lines. Water Resources Research, 16, 574–582.

    Article  Google Scholar 

  • Verburg, K., Ross, P. J., & Bristow, K. L. (1996). SWIM v2.1 user manual. Division Report, 130. Canberra: Commonwealth Science and Industrial Research Organization.

    Google Scholar 

  • Wheeland, K. G., & Feasby, G. (1991). Innovative decommission technologies via Canada’s MEND program. Proc. of the 12th Nat. Conf., Hazardous Mater. Control/Superfund‘91, Hazardous mater. Control Res. Inst, 23–28.

  • Wilson, G. W. (1990). Soil evaporative fluxes for geotechnical engineering problems. PhD Thesis, Department of Civil Engineering. Saskatoon, Saskatchewan, Canada: University of Saskatchewan.

  • Wilson, G. W., Fredlund, D. G., & Barbour, S. L. (1994). Coupled soil atmosphere modeling for soil evaporation. Canadian Geotechnical Journal, 31, 151–161.

    Google Scholar 

  • Woyshner, M. R., & Yanful, E. K. (1995). Modeling and field measurements of water percolation through an experimental soil cover on mine tailings. Canadian Geotechnical Journal, 32, 601–609.

    CAS  Google Scholar 

  • Yanful, E. K. (1993). Oxygen diffusion through soil covers on sulphidic mine tailings. Journal of Geotechnical Engineering, 119, 1207–1228.

    Article  Google Scholar 

  • Yanful, E. K., Riley, M. D., Woyshner, M. R., & Duncan, J. (1993). Construction and monitoring of a composite soil cover on an experimental waste rock pile near Newcastle, New Brunswick, Canada. Canadian Geotechnical Journal, 30, 588–599.

    Article  Google Scholar 

  • Yanful, E. K., Simms, P. H., & Payant, S. C. (1999). Soil covers for controlling acid generation in mine tailings: A laboratory evaluation of physics and geochemistry. Water, Air, and Soil Pollution, 114, 347–375.

    Article  CAS  Google Scholar 

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Acknowledgements

The work was funded by Inco Ltd. Ontario Division, Copper Cliff, Ontario and the Natural Sciences and Engineering Research Council of Canada (NSERC) in the form of a Collaborative Research and Development Grant No. 238198/00 awarded to E.K. Yanful.

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  1. Geotechnical Research Center, Department of Civil and Environmental Engineering, The University of Western Ontario, London, Ontario, N6A 5B9, Canada

    Qing Song & Ernest K. Yanful

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  1. Qing Song
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Correspondence to Qing Song.

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Song, Q., Yanful, E.K. Monitoring and Modeling of Sand-Bentonite Cover for ARD Mitigation. Water Air Soil Pollut 190, 65–85 (2008). https://doi.org/10.1007/s11270-007-9581-z

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