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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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Journal Article |
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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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Abstract |
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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Sottnik, P.; Sucha, V. |
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Title |
Moznosti upravy kysleho banskeho vytoku loziska Banska Stiavnica-Sobov. Remediation of acid mine drainage from Sobov Mine, Banska Stiavnica |
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Journal Article |
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2001 |
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Mineralia Slovaca |
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33 |
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1 |
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53-60 |
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acid mine drainage aluminum Banska Stiavnica Slovakia Central Europe copper Eh Europe gangue heavy metals iron manganese metals metamorphic rocks oxidation pH pollution precipitation pyrite quartzites reduction remediation Slovakia Sobov Mine sulfides vegetation waste disposal wetlands 22, Environmental geology |
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A waste dump formed during the exploitation of quartzite deposit in Sobov mine (Slovakia) produces large quantity of acid mine drainage (AMD) which is mainly a product of pyrite oxidation. Sulphuric acid--the most aggressive oxidation product--attacks gangue minerals, mainly clays, as well. This process lead to a sharp decrease of the pH values (2-2.5) and increase of Fe, Al and SO (super 2-) (sub 4) contents (TDS = 20-30 mg/1). Passive treatment system was designed to remediate AMD. Chemical redox reactions along with microbial activity cause a precipitation of mobile contamination into a more stable forms. The sulphides are formed in the anaerobic cell, under reducing conditions. Fe-, Al- oxyhydroxides are precipitated in the aerobic part of the system. Precipitation decreases the Fe and Al contents along with immobilization of some heavy metal closely related to oxyhydroxides. Besides oxidation, the wetland vegetation is an active part of on aerobic cell. The system has been working effectively since September 1999. The pH values of outflowing water are apparently higher (6.2-6.8) and contents of dissolved elements (Fe from 2.260 to 4.1; Al from 900 to 0.18; Mn from 51 to 23; Cu from 4.95 to 0.03 mg/l) is significantly lowers. |
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0369-2086 |
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Moznosti upravy kysleho banskeho vytoku loziska Banska Stiavnica-Sobov. Remediation of acid mine drainage from Sobov Mine, Banska Stiavnica; 2004-084366; References: 21; illus. incl. sects. Slovak Republic (SVK); GeoRef; Slovakian |
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CBU @ c.wolke @ 16534 |
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235 |
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Scharp, R.A.; Kawahara, F.; Burckle, J.; Allan, J.; Govind, R. |
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Recovery of metals from acid mine drainage Hardrock mining 2002; issues shaping the industry |
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2002 |
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acid mine drainage; bacteria; Berkeley Pit; Butte Montana; cost; decontamination; metals; mining; Montana; pH; pollution; recovery; remediation; Silver Bow County Montana; smelting; sulfates; United States 22, Environmental geology |
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Recovery of metals from acid mine drainage Hardrock mining 2002; issues shaping the industry; GeoRef; English; 2007-046147; Hardrock mining 2002; issues shaping the industry, Westminster, CO, United States, May 7-9, 2002 U. S. Environmental Protection Agency, Office of Research and Development, Washington, DC, United States |
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CBU @ c.wolke @ 5614 |
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251 |
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Robinson, J.D.F. |
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Title |
Wetland treatment of coal-mine drainage |
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1998 |
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Coal International |
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246 |
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3 |
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114-115 |
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coal mines; Europe; mine drainage; mines; pH; pollution; UK Coal Authority; United Kingdom; water; water treatment; Western Europe; wetlands 22, Environmental geology |
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1357-6941 |
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Wetland treatment of coal-mine drainage; 2000-013457; References: 1; illus. incl. 2 tables United Kingdom (GBR); GeoRef; English |
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CBU @ c.wolke @ 6129 |
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260 |
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Rees, B.; Bowell, R.; Dey, M.; Williams, K. |
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Title |
Passive treatment; a walk away solution? |
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Year |
2001 |
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Mining Environmental Management |
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9 |
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2 |
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7-8 |
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acid mine drainage; acidification; alkalinity; bacteria; bioremediation; buffers; chemical reactions; cost; effluents; ferric iron; ferrous iron; filtration; ground water; hydrolysis; iron; metals; monitoring; oxidation; permeability; pH; pollution; remediation; substrates; sulfate ion; suspended materials; water management; water pollution; water quality; water treatment; wetlands 22, Environmental geology |
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0969-4218 |
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Passive treatment; a walk away solution?; 2001-050826; References: 3; illus. United Kingdom (GBR); GeoRef; English |
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CBU @ c.wolke @ 5722 |
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265 |
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