| Records |
| Author |
McConchie, D.M.; Clark, M.; Hanahan, C.; Baun, R. |
| Title |
New treatments for the old problems of acid mine drainage and sulphidic mine tailings storage |
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Journal Article |
| Year |
2000 |
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acid mine drainage; ash; carbonate rocks; clastic sediments; construction materials; crushed stone; hydroxides; iron hydroxides; iron oxides; mines; mud; oxides; pH; pollution; reclamation; red mud; remediation; sea water; sedimentary rocks; sediments; storage; sulfides; tailings; waste management 22, Environmental geology |
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Programme & Abstracts - International Symposium on Environmental Geochemistry (ISEG), vol.5 |
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5th international symposium on Environmental geochemistry; conference abstracts and scientific programme |
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2006-033067; 5th international symposium on Environmental geochemistry, Cape Town, South Africa, April 2004; GeoRef; English |
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| Call Number |
CBU @ c.wolke @ 5858 |
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304 |
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| Author |
Landers, J. |
| Title |
Bioremediation method could cut cost of treating acid rock drainage |
Type |
Journal Article |
| Year |
2006 |
Publication |
Civil Engineering |
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| Volume |
76 |
Issue |
7 |
Pages |
30-31 |
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Pollution and waste management non radioactive geological abstracts: environmental geology (72 14 2) bioremediation cost benefit analysis water treatment acid mine drainage pollutant removal lake water heavy metal Lawrence County South Dakota South Dakota United States North America |
| Abstract |
The Gilt Edge Mine in South Dakota's Lawrence County was a gold mine that was abandoned later when its recent owner went bankrupt. Seeking a cost-effective method for treating millions of gallons of acid rock drainage (ARD), CDM partnered with Green World Science, Inc. (GWS) of Boise, Idaho, for the development of an in situ bioremediation process that can be used to remove metals from pit lake water. Recent testing revealed that the in situ bioremediation method can successfully remove metals from highly acidic water without the need to construct costly water treatment facilities. |
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0885-7024 |
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Trade-; Bioremediation method could cut cost of treating acid rock drainage; 2896866; United-States; Geobase |
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no |
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CBU @ c.wolke @ 17490 |
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318 |
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| Author |
Kuyucak, N. |
| Title |
Acid mining drainage prevention and control |
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Journal Article |
| Year |
2001 |
Publication |
Mining Environmental Management |
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9 |
Issue |
1 |
Pages |
12-15 |
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acid mine drainage; bacteria; biodegradation; chemical properties; controls; disposal barriers; dissolved materials; geomembranes; heavy metals; hydrolysis; leaching; migration of elements; moisture; oxidation; permeability; pollution; ponds; preventive measures; reclamation; retention; risk assessment; sulfate ion; sulfides; synthetic materials; tailings; toxic materials; underground installations; underground storage; waste disposal; waste management; water pollution; water treatment 22, Environmental geology |
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0969-4218 |
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Acid mining drainage prevention and control; 2001-050583; References: 21; illus. incl. 1 table United Kingdom (GBR); GeoRef; English |
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no |
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CBU @ c.wolke @ 5741 |
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323 |
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Eger, P.; Melchert, G.; Wagner, J. |
| Title |
Using passive treatment systems for mine closure – A good approach or a risky alternative? |
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Journal Article |
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2000 |
Publication |
Min. Eng. |
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52 |
Issue |
9 |
Pages |
78-83 |
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Pollution and waste management non radioactive Groundwater problems and environmental effects geological abstracts: environmental geology (72 14 2) geomechanics abstracts: excavations (77 10 10) acid mine drainage decommissioning mine waste open pit mine pH remediation |
| Abstract |
In 1991, LTV Steel Mining decided to close an open-pit taconite mine in northeastern Minnesota using a passive-treatment approach consisting of limiting infiltration into the stockpiles and wetland treatment to remove metals. More than 50 Mt (55 million st) of sulfide-containing waste had been stockpiled adjacent to the mine during its 30 years of operation. Drainage from the stockpiles contained elevated levels of copper, nickel, cobalt and zinc. Nickel is the major trace metal in the drainages. Before the closure, the annual median concentrations ranged from 1.5 to 50 mg/L. Copper, cobalt and zinc are also present but they are generally less than 5% of the nickel values. Median pH levels range from 5 to 7.5, but most of the stockpile drainages have pH levels greater than 6.5. Based on the chemical composition of each stockpile, a cover material was selected. The higher the potential that a stockpile had to produce acid drainage, the lower the permeability of the capping material required. Covers ranged from overburden soil removed at the mine to a flexible plastic liner. Predictions of the reduction in infiltration ranged from 40% for the native soil to more than 90% for the plastic liner. Five constructed wetlands have been installed since 1992. They have removed 60% to 90% of the nickel in the drainages. Total capital costs for all the infiltration reduction and wetlands exceeded $6.5 million, but maintenance costs are less than 1% of those for an active treatment plant. Because mine-drainage problems can continue for more than 100 years, the lower annual operating costs should pay for the construction of the wetland-treatment systems within seven years. |
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P. Eger, Minnesota Dept. of Natural Rsrces., St. Paul, MN, United States |
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0026-5187 |
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Using passive treatment systems for mine closure – A good approach or a risky alternative?; 2285715; United-States 19; Geobase |
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no |
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CBU @ c.wolke @ 17539 |
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392 |
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| Author |
Carlson, L.; Kumpulainen, S. |
| Title |
Retention of harmful elements by ochreous precipitates of iron |
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Journal Article |
| Year |
2001 |
Publication |
Tutkimusraportti Geologian Tutkimuskeskus |
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| Volume |
- |
Issue |
154 |
Pages |
30-33 |
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Surface water quality Pollution and waste management non radioactive geographical abstracts: physical geography hydrology (71 6 9) geological abstracts: environmental geology (72 14 2) iron oxide precipitation chemistry sulfate arsenate heavy metal pH water pollution remediation |
| Abstract |
The capability of soil fines to fix harmful elements, e.g. heavy metals and arsenic, depends on specific surface area and other characteristics, such as surface charge. In the pH-range typical of natural waters (pH 5,5-7,5), the surfaces of fine-grained silicate particles and manganese oxides are negatively charged; consequently cations, such as heavy metals, fix effectively to them. The iron oxide surfaces are usually positively charged and typically fix anions, such as sulphate and arsenate. Retention of anions is especially extensive to precipitates formed from acid mine drainage (pH 2,5-5,0). For example, precipitates found at Paroistenjarvi mine, Finland, contain more than 70 g/kg of arsenic (dry matter). Adsorbed anions, e.g. sulphate, enhance the capacity of precipitate to fix heavy metal cations in low-pH environments. |
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L. Carlson, Tehtaankatu 25 A 4, Helsinki FIN-00150, Finland liisa.carlson@kolumbus.fi |
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0781-4240 |
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Retention of harmful elements by ochreous precipitates of iron; 2392974; Oksidiset rautasaostumat haitallisten aineiden pidattajina. Finland 7; Geobase |
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no |
| Call Number |
CBU @ c.wolke @ 17533 |
Serial |
421 |
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