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Author (up) Benner, S.G.
Title Geochemistry of a permeable reactive barrier for metals and acid mine drainage Type Journal Article
Year 1999 Publication Environmental Science & Technology Abbreviated Journal
Volume 33 Issue 16 Pages 2793-2799
Keywords mine water treatment
Abstract A permeable reactive barrier, designed to remove metals and generate alkalinity by promoting sulfate reduction and metal sulfide precipitation, was installed in August 1995 into an aquifer containing effluent from mine tailings. Passage of groundwater through the barrier results in striking improvement in water quality. Dramatic changes in concentrations of SO4 (decrease of 2000-3000 mg/L), Fe (decrease of 270-1300 mg/L), trace metals (e.g., Ni decreases 30 mg/L), and alkalinity (increase of (800-2700 mg/L) are observed. Populations of sulfate reducing bacteria are 10 000 times greater, and bacterial activity, as measured by dehydrogenase activity, is 10 rimes higher within the barrier compared to the up-gradient aquifer. Dissolved sulfide concentrations increase by 0.2-120 mg/ L, and the isotope S-34 is enriched relative to S-32 in the dissolved phase SO42- within the barrier. Water chemistry, coupled with geochemical speciation modeling, indicates the pore water in the barrier becomes supersaturated with respect to amorphous Fe sulfide. Solid phase analysis of the reactive mixture indicates the accumulation of Fe monosulfide precipitates. Shifts in the saturation states of carbonate, sulfate, and sulfide minerals and most of the observed changes in water chemistry in the barrier and down-gradient aquifer can be attributed, either directly or indirectly, to bacterially mediated sulfate reduction.
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Notes Geochemistry of a permeable reactive barrier for metals and acid mine drainage; Wos:000082074500017; Times Cited: 57; ISI Web of Science Approved no
Call Number CBU @ c.wolke @ 17115 Serial 132
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Author (up) Berthelot, D.; Haggis, M.; Payne, R.; McClarty, D.; Courtain, M.
Title Application of water covers, remote monitoring and data management systems to environmental management at uranium tailings sites in the Serpent River Watershed Type Journal Article
Year 1999 Publication CIM Bull. Abbreviated Journal
Volume 92 Issue 1033 Pages 70-77
Keywords mine water treatment Bergbau Industrieabfall Abwasserbehandlung Umweltschutz Umwelttechnik Umweltüberwachung Umweltverschmutzung Versatzgut Uranbergbau Managementsystem Aufbereitungsrückstand
Abstract Over forty years of uranium mining in the Elliot lake region of Ontario (1956-1996) has resulted in the production of over 300 million pounds of uranium. With the completion of mining activity Rio Algom limited and Denison Mines limited are utilizing progressive environmental technologies and management systems to reduce and manage the environmental risks associated with the 150 million tonnes of potentially acid-generating tailings in nine regional waste management areas. Water covers designed to reduce oxygen entry and, thereby, significantly inhibit acid generation, have been applied at six of the sites with the Quirke site serving as a demonstration site for the Mine Environmental Neutral Drainage program, All five of Rio Algom limited's effluent treatment plants are monitored and controlled from a central control station utilizing a Supervisory Control and Data Acquisition (SCADA) system based on “Fix Dmacs” technology Scheduling, auditing and reporting of plant operating and environmental monitoring programs for the entire watershed are controlled utilizing the Regional Environmental Information Management System (REIMS). Proper application of these technologies and management systems facilitates delivery of cost-effective environmental monitoring, care and maintenance programs at these sites and provides tools to demonstrate compliance with all environmental performance criteria.
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Notes Sept.; Application of water covers, remote monitoring and data management systems to environmental management at uranium tailings sites in the Serpent River Watershed; Wos:000083074000018; Times Cited: 0; ISI Web of Science Approved no
Call Number CBU @ c.wolke @ 8475 Serial 131
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Author (up) Bertrand, S.
Title Performance of a nanofiltration plant on hard and highly sulphated water during two years of operation Type Journal Article
Year 1997 Publication Desalination Abbreviated Journal
Volume 113 Issue 2-3 Pages 277-281
Keywords mine water treatment
Abstract A highly sulphated, hard water from a flooded iron mine was treated by nanofiltration for the production of drinking water (125 m(3)/h). This paper introduces the context and summarizes the configuration and operating conditions of the plant. The process performance in terms of product water quality and permeability during the first 2 years is presented and discussed.
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Notes Performance of a nanofiltration plant on hard and highly sulphated water during two years of operation; Wos:000071218200023; Times Cited: 5; ISI Web of Science Approved no
Call Number CBU @ c.wolke @ 17153 Serial 134
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Author (up) Bhole, A.G.
Title Acid-Mine Drainage And Its Treatment Type Journal Article
Year 1994 Publication Impact of Mining on the Environment Abbreviated Journal
Volume Issue Pages 131-141
Keywords mine water treatment
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Notes Acid-Mine Drainage And Its Treatment; Isip:A1994ba02k00015; Times Cited: 0; ISI Web of Science Approved no
Call Number CBU @ c.wolke @ 8945 Serial 146
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Author (up) Blowes, D.W.
Title Treatment of mine drainage water using in situ permeable reactive walls Type Journal Article
Year 1995 Publication Sudbury '95 – Mining and the Environment, Conference Proceedings, Vols 1-3 Abbreviated Journal
Volume Issue Pages 979-987
Keywords mine water treatment
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Notes Treatment of mine drainage water using in situ permeable reactive walls; Isip:A1995bg39j00098; Times Cited: 0; ISI Web of Science Approved no
Call Number CBU @ c.wolke @ 17191 Serial 137
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