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Govind, R. |
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Title |
Treatment of acid mine drainage using membrane bioreactors |
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Journal Article |
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2001 |
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Bioremediation of Inorganic Compounds |
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6 |
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9 |
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1-8 |
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mine water treatment |
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Acid mine drainage is a severe water pollution problem attributed to past mining activities. The exposure of the post-mining mineral residuals to water and air results in a series of chemical and biological oxidation reactions, that produce an effluent which is highly acidic and contains high concentrations of various metal sulfates. Several treatment techniques utilizing sulfate reducing bacteria have been proposed in the past; however few of them have been practically applied to treat acid mine drainage. This research deals with membrane reactor studies to treat the acid mine drainage water from Berkeley Pit in Butte, Montana using hydrogen-consuming sulfate reducing bacteria. Eventually, the membrane reactor system can be applied towards the treatment of acid mine drainage to produce usable water. |
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Treatment of acid mine drainage using membrane bioreactors; Isip:000175098600001; Times Cited: 0; ISI Web of Science |
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CBU @ c.wolke @ 17051 |
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162 |
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Author |
Mosher, J. |
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Title |
Heavy-metal sludges as smelter feedstock |
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Journal Article |
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1994 |
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Engineering and Mining Journal |
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195 |
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9 |
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25-30 |
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Metals Mining Groundwater Pollution USA Colorado California Gulch 3 Geology |
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Many industries produce a waste-water stream high in heavy metals. Disposal of sludge from these wastewater treatment plants has become increasingly difficult and expensive in the US due to passage of the Resource Conservation and Recovery Act's 'land disposal ban' for hazardous wastes. Innovative methods can be found for dealing with such wastes. For example, in performing a mandated clean-up under the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA), Asarco's California Gulch water-treatment plant in Colorado meets CERCLA clean-up goals while using a waste water treatment sludge as a smelter feedstock, recovering incidental saleable metals, and producing non-hazardous products. In this plant, Asarco treats acidic mine-drainage water having high metal concentrations and uses the waste sludge generated as a lime replacement in lead smelting operations. -Author |
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Heavy-metal sludges as smelter feedstock; (1084960); 95t-4357; Using Smart Source Parsing pp; Geobase |
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CBU @ c.wolke @ 17563 |
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293 |
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Maree, J.P.; Du Plessis, P. |
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Neutralization of acid mine water with calcium carbonate |
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1981 |
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Water Sci. Technol. |
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29 |
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9 |
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285 |
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0273-1223 |
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Neutralization of acid mine water with calcium carbonate; Oxford; New York: Pergamon Press; Opac |
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CBU @ c.wolke @ 7221 |
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310 |
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Eger, P.; Melchert, G.; Wagner, J. |
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Using passive treatment systems for mine closure – A good approach or a risky alternative? |
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2000 |
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Min. Eng. |
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52 |
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9 |
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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 |
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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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CBU @ c.wolke @ 17539 |
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392 |
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Author |
Lecuyer, N. |
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Title |
Acid-Mine Water-Treatment at les mines Gallen, Noranda-Mines limited |
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1983 |
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CIM Bull. |
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76 |
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851 |
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107-110 |
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mine water |
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0317-0926 |
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Acid-Mine Water-Treatment at les mines Gallen, Noranda-Mines limited; Isi:A1983qs54800139; AMD ISI | Wolkersdorfer |
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CBU @ c.wolke @ 9762 |
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317 |
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