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Eger, P.; Melchert, G.; Antonson, D.; Wagner, J. |
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Title |
Magnesium hydroxide as a treatment for acid mine drainage in northern Minnesota |
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1993 |
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Proceedings of the Annual National Meeting – American Society for Surface Mining and Reclamation, vol.10 |
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204-217 |
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acid mine drainage acidification alkaline earth metals chemical properties cobalt copper drainage experimental studies hydroxides laboratory studies lime magnesium magnesium hydroxide metals Minnesota nickel northern Minnesota oxides pH pollution porous materials reagents remediation residence time trace metals United States waste disposal zinc 22, Environmental geology |
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Three alkaline materials were investigated for their suitability to treat acid mine drainage generated by a research facility located at a remote site in northern Minnesota. The materials investigated were hydrated lime, sodium hydroxide, and magnesium hydroxide. All three reagents were successful at raising pH and removing trace metals from the drainage, but the magnesium hydroxide had the added benefit of producing a maximum pH of approximately 9.5, while the other two reagents resulted in pH values of 12 and greater. In addition, the magnesium hydroxide was available as a high solid content slurry (58%) which simplified application and handling, and which produced the lowest volume of sludge of the materials tested. |
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Zamora, B.A.; Connolly, R.E. |
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The challenge of integrating diverse perspectives in reclamation |
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Magnesium hydroxide as a treatment for acid mine drainage in northern Minnesota; GeoRef; English; 2002-028930; 10th annual national meeting of the American Society for Surface Mining and Reclamation, Spokane, WA, United States, May 16, 1993 References: 7; illus. incl. 4 tables |
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CBU @ c.wolke @ 16743 |
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393 |
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Bagdy, I.; Kaocsány, L. |
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Title |
Treatment of mine water for the protection of pumps |
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1982 |
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Proceedings, 1st International Mine Water Congress, Budapest, Hungary |
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ABCD Supplementary volume |
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201-214 |
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pumps mine water treatment sediment Hungary karst |
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Treatment of mine water for the protection of pumps; 1; 3 Abb.; AMD ISI | Wolkersdorfer |
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CBU @ c.wolke @ 9509 |
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470 |
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Kepler, D.A.; Mc Cleary, E.C. |
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Title |
Successive Alkalinity-Producing Systems (SAPS) for the Treatment of Acid Mine Drainage |
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1994 |
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Proceedings, International Land Reclamation and Mine Drainage Conference |
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1 |
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195-204 |
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acid mine drainage; alkalinity; anaerobic environment; calcium carbonate; chemical reactions; experimental studies; pH; pollutants; pollution; remediation; water quality SAPS mine water RAPS |
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Constructed wetland treatment system effectiveness has been limited by the alkalinity-producing, or acidity-neutralizing, capabilities of systems. Anoxic limestone drains (ALD's) have allowed for the treatment of approximately 300 mg/L net acidic mine drainage, but current design guidance precludes using successive ALD's to generate alkalinity in excess of 300 mg/L because of concerns with dissolved oxygen. “Compost” wetlands designed to promote bacterially mediated sulfate reduction are suggested as a means of generating alkalinity required in excess of that produced by ALD's. Compost wetlands create two basic needs of sulfate reducing bacteria; anoxic conditions resulting from the inherent oxygen demand of the organic substrate, and quasi-circumneutral pH values resulting from the dissolution of the carbonate fraction of the compost. However, sulfate reduction treatment area needs are generally in excess of area availability and/or cost effectiveness. Second generation alkalinity-producing systems demonstrate that a combination of existing treatment mechanisms has the potential to overcome current design concerns and effectively treat acidic waters ad infinitum. Successive alkalinity-producing systems (SAPS) combine ALD technology with sulfate reduction mechanisms. SAPS promote vertical flow through rich organic wetland substrates into limestone beds beneath the organic compost, discharging the pore waters. SAPS allow for conservative wetland treatment sizing calculations to be made as a rate function based on pH and alkalinity values and associated contaminant loadings. SAPS potentially decrease treatment area requirements and have the further potential to generate alkalinity in excess of acidity regardless od acidity concentrations. |
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Successive Alkalinity-Producing Systems (SAPS) for the Treatment of Acid Mine Drainage; Cn, Kj, Aj; file:///C:/Dokumente%20und%20Einstellungen/Stefan/Eigene%20Dateien/Artikel/9722.pdf; AMD ISI | Wolkersdorfer |
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CBU @ c.wolke @ 9722 |
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55 |
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Author |
Costigan, P.A. |
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Title |
The reclamation of acidic colliery spoil .3. Problems associated with the use of high-rates of limestone |
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1982 |
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Journal of Applied Ecology |
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19 |
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1 |
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193-201 |
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mine water treatment |
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The reclamation of acidic colliery spoil .3. Problems associated with the use of high-rates of limestone; Wos:A1982nq52600017; Times Cited: 5; ISI Web of Science |
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CBU @ c.wolke @ 9185 |
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96 |
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Author |
Rajaram, V. |
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Title |
Methodology for estimating the costs of treatment of mine drainage |
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2001 |
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Proceedings of the Seventeenth International Mining Congress and Exhibition of Turkey |
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191-201 |
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mine water treatment |
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Tetra Tech developed worksheets for the U.S. Department of the Interior, Office of Surface Mining (OSM) to allow a consistent, accurate, and rapid method of estimating the costs of long-term treatment of mine drainage at coal mines, in accordance with the Surface Mining Control and Reclamation Act (SMCRA) of 1977. This paper describes the rationale for the worksheets and how they can be used to calculate costs for site-specific conditions. Decision trees for selection of alternative treatments for acidic or alkaline mine drainage are presented. |
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Methodology for estimating the costs of treatment of mine drainage; Isip:000171428500021; Times Cited: 0; ISI Web of Science |
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CBU @ c.wolke @ 17065 |
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163 |
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