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Stefanoff, J.G.; Kim, Y.K. |
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Reduction of leachability of heavy metals in acid mine drainage |
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1994 |
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J. Environ. Sci. Health Part A Environ. Sci. Eng. |
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29 |
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2 |
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371-388 |
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1 Geography |
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The leaching characteristics of sludges from the treatment of acid mine drainage(AMD) from Iron Mountain Mine near Redding, California were compared using two different processes: caustic soda treatment and a modified lime/sulfide treatment process. The modified lime/sulfide process produced a sludge with better dewaterability characteristics than sludge from the caustic soda process. The results of the Cal WET indicated that the modified lime/sulfide process sludge had less leachability than that of sludge from the caustic soda process. Both processes could achieve a substantial reduction of heavy metals in leachate to levels below the federal regulatory limits(TCLP). For cadmium and zinc, however, neither process produced a sludge that met the requirements of the Cal WET procedure. |
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CH2M HILL, 2525 Airpark Drive, Redding, CA 96001 |
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Reduction of leachability of heavy metals in acid mine drainage; (1009849); 93x-00709; Using Smart Source Parsing; Geobase |
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CBU @ c.wolke @ 17564 |
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231 |
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Michaud, L.H. |
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Title |
Recent technology related to the treatment of acid drainage |
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Journal Article |
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1994 |
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Earth and Mineral Sciences |
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63 |
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3 |
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53-55 |
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acid mine drainage coal mine remediation passive treatment 3 Geology |
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The generation of acid mine drainage is a serious environmental problem associated with coal mining. The chemistry of acid mine drainage is outlined. The prevention and minimization of acid mine drainage formation is examined. The in situ inhibition and remediation of acid mine drainage is described. Methods for the passive treatment of acid mine drainage after formation are discussed. The design of treatment systems is considered. -P.M.Taylor |
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Recent technology related to the treatment of acid drainage; (1131431); 95k-15099; Using Smart Source Parsing 95. pp; Geobase |
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CBU @ c.wolke @ 17562 |
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300 |
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Evangelou, V.P. |
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Potential microencapsulation of pyrite by artificial inducement of FePO (sub 4) coatings |
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1994 |
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Special Publication – United States. Bureau of Mines, Report: BUMINES-SP-06B-94 |
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96-103 |
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acid mine drainage chemical reactions leaching oxidation pollutants pollution pyrite remediation sulfides tailings theoretical studies waste disposal weathering rinds 22, Environmental geology |
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Proceedings of the International land reclamation and mine drainage conference and Third international conference on The abatement of acidic drainage; Volume 2 of 4; Mine drainage |
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Potential microencapsulation of pyrite by artificial inducement of FePO (sub 4) coatings; GeoRef; English; 2007-045209; International land reclamation and mine drainage conference; International conference on The abatement of acidic drainage, Pittsburgh, PA, United States, April 24-29, 1994 References: 11; illus. |
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CBU @ c.wolke @ 16711 |
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386 |
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Kuyucak, N.; St-Germain, P. |
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Possible options for in situ treatment of acid mine drainage seepages |
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Book Chapter |
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1994 |
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Special Publication – United States. Bureau of Mines, Report: BUMINES-SP-06B-94 |
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311-318 |
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acid mine drainage; bacteria; base metals; biodegradation; bioremediation; carbonate rocks; experimental studies; in situ; limestone; metal ores; pollution; reduction; remediation; sedimentary rocks; seepage 22, Environmental geology |
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Proceedings of the International land reclamation and mine drainage conference and Third international conference on The abatement of acidic drainage; Volume 2 of 4; Mine drainage |
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Possible options for in situ treatment of acid mine drainage seepages; GeoRef; English; 2007-045234; International land reclamation and mine drainage conference; International conference on The abatement of acidic drainage, Pittsburgh, PA, United States, April 24-29, 1994 References: 12; illus. incl. 4 tables |
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CBU @ c.wolke @ 6614 |
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321 |
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Hedin, R.S.; Nairn, R.W.; Kleinmann, R.L.P. |
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Title |
Passive Treatment of Coal Mine Drainage |
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Year |
1994 |
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Bureau of Mines Information Circular |
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Ic-9389 |
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1-35 |
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wetland Grubenwasser treatment Wasserreinigung Wasserbehandlung mine water |
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Passive methods of treating mine water utilize chemical and biological processes that decrease metal concentrations and neutralize acidity. Compared to conventional chemical treatment, passive methods generally require more land area, but utilize less costly reagents and require less operational attention and maintenance. Currently, three types of passive technologies exist: aerobic wetlands, wetlands that contain an organic substrate, and anoxic limestone drains. Aerobic wetlands promote mixed oxidation and hydrolysis reactions, and are most effective when the raw mine water is net alkaline. Organic substrate wetlands promote anaerobic bacterial activity that results in the precipitation of metal sulfides and the generation of bicarbonate alkalinity. Anoxic limestone drains generate bicarbonate alkalinity and can be useful for the pretreatment of mine water before it flows into a wetland. Rates of metal and acidity removal for passive systems have been developed empirically. Aerobic wetlands remove Fe and Mn from alkaline water at rates of 10-20 g×m-2×d-1 and 0.5-1.0 g×m-2×d-1, respectively. |
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0096-1914 |
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Passive Treatment of Coal Mine Drainage; 1; abgegeben an TUFG 100700 / € 0 13 Abb., 19 Tab.; AMD ISI | Wolkersdorfer |
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CBU @ c.wolke @ 17474 |
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355 |
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