00000nam 2200000zi 4500 9.874368 CaOODSP 20241203113649 m o d f cr bn||||||||| 190606s1995 onca ob f000 0 eng d CaOODSP eng rda CaOODSP n-cn-on En13-5/95-10E-PDF Blowes, David, 1956- author. In situ treatment of mine drainage water using porous reactive walls / by D. Blowes, C. Ptacek, K. Waybrant, J. Bain, W. Robertson. [Ottawa] : Environment Canada, Water Science and Technology Directorate = Environnement canada, Direction générale des sciences et de la technologie, eau, [1995] 1 online resource (8 unnumbered pages) : illustrations. text txt rdacontent computer c rdamedia online resource cr rdacarrier NWRI contribution ; 95-10 Cover title. "In: The "New Economy" Green Needs and Opportunities, Environment and Energy Conference of Ontario, November 15 & 16, 1994, Toronto, Ontario." Digitized edition from print [produced by Environment and Climate Change Canada]. Includes bibliographical references. "Porous reactive walls installed in the path of plumes of tailings-derived groundwater have the potential to prevent and remediate acid mine drainage and dissolved metal release. Various forms of organic carbon were added to a reactive wall located in an aquifer downgradient from a mine-tailings impoundment at the Nickel Rim mine site, Sudbury, Ontario. Bacterially catalyzed sulphate reduction and metal sulphide precipitation reactions decreased SO₄ concentrations from 3500 to 7 mg/L and Fe concentrations from 1000 to <5 mg/L, and increased pH and alkalinity. These results indicate that sulphate-reducing reactive walls represent an effective and economically viable alternative solution to many acid mine drainage problems. Laboratory tests indicate treatment of other metals, Pb, Zn, Cu, Cd, and Ni is possible using this technology." Ptacek, Carol Jane, 1959- author. Waybrant, K. R., author. Bain, J. G. (Jeffrey G.) author. Robertson, William Dean, 1953- author. Canada. Environment Canada. Canada. Water Science and Technology Directorate. Waterloo Centre for Groundwater Research‏. National Water Research Institute (Canada) NWRI contribution ; 95-10. (CaOODSP)9.844121 PDF 1.45 MB https://publications.gc.ca/collections/collection_2019/eccc/en13-5/En13-5-95-10-eng.pdf