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Karathanasis, A.D.; Barton, C.D. |
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Title |
The revival of a failed constructed wetland treating a high Fe load AMD |
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Book Chapter |
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1999 |
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Proceedings; biogeochemistry of trace elements in coal and coal combustion byproducts |
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abandoned mines acid mine drainage anaerobic environment carbonate rocks characterization composting constructed wetlands design environmental analysis ferrihydrite geologic hazards hydrology hydroxides iron iron hydroxides Kentucky limestone metals minerals mines organic compounds oxides pollution remediation runoff sedimentary rocks sediments solubility sulfate ion United States water quality water treatment wetlands 22, Environmental geology |
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Kluwer Academic/Plenum Publishers |
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New York |
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Sajwan, K.S.; Alva, A.K.; Keefer, R.F. |
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0306462885 |
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The revival of a failed constructed wetland treating a high Fe load AMD; GeoRef; English; 2002-039561; Fourth international conference on the Biogeochemistry of trace elements, Berkeley, CA, United States, June 23, 1997 References: 45; illus. incl. 2 tables, sketch maps |
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CBU @ c.wolke @ 16571 |
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82 |
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Author |
Murayama, T. |
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Title |
Application Of Immobilized Thiobacillus-Ferrooxidans For Large-Scale Treatment Of Acid-Mine Drainage |
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Journal Article |
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1987 |
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Methods Enzymol. |
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136 |
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530-540 |
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mine water treatment |
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Application Of Immobilized Thiobacillus-Ferrooxidans For Large-Scale Treatment Of Acid-Mine Drainage; Wos:A1987m167600047; Times Cited: 6; ISI Web of Science |
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CBU @ c.wolke @ 9106 |
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92 |
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Author |
Kothe, E. |
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Title |
Molecular mechanisms in bio-geo-interaactions: From a case study to general mechanisms |
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2005 |
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Chemie Der Erde-Geochemistry |
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65 |
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7-27 |
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mine water treatment |
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The understanding of molecular mechanisms in the cycling of elements in general is essential to our alteration of current processes. One field where such geochemical element cycles are of major importance is the prevention and treatment of acid mine drainage waters (AMD) which are prone to occur in every anthropogenic, modified landscape where sulfidic rock material has been brought to the surface during mine operations. Microbiologically controlled production of AMD leads not only to acidification, but at the same time the dissolution of heavy metals makes them bioavailable posing a potential ecotoxicological risk. The water path then can contaminate surface and ground water resources which leads to even bigger problems in large catchment areas. The investigation of mechanisms in natural attenuation has already provided first ideas for applications of naturally occurring bioremediation schemes. Especially an improved soil microflora can enhance the natural attenuation when adapted microbes are applied to contaminated areas. Future schemes for plant extraction, control of water efflux by increasing evapotranspiration, and by subsequent land use with agricultural plants with biostabilization and phytosequestration potential will provide putative control measures. The mechanisms in parts of these processes have been evaluated and the resulting synthesis applied to derive a bioremediation plan using the former uranium mine in Eastern Thuringia as a case study. (c) 2005 Elsevier GrnbH. All rights reserved. |
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Molecular mechanisms in bio-geo-interaactions: From a case study to general mechanisms; Wos:000233975000002; Times Cited: 0; ISI Web of Science |
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CBU @ c.wolke @ 16965 |
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114 |
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Author |
Younger, P.L. |
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Title |
Holistic remedial strategies for short- and long-term water pollution from abandoned mines |
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Journal Article |
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2000 |
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Transactions of the Institution of Mining and Metallurgy Section a-Mining Technology |
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109 |
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A210-A218 |
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abandoned mines acid mine drainage Europe mines mining planning pollution remediation United Kingdom water pollution Western Europe |
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Where mining proceeds below the water-table-as it has extensively in Britain and elsewhere-water ingress is not only a hindrance during mineral extraction but also a potential liability after abandonment. This is because the cessation of dewatering that commonly follows mine closure leads to a rise in the water-table and associated, often rapid, changes in the chemical regime of the subsurface. Studies over the past two decades have provided insights into the nature and time-scales of these changes and provide a basis for rational planning of mine-water management during and after mine abandonment. The same insights into mine-water chemistry provide hints for the efficient remediation of pollution (typically due to Fe, Mn and Al and, in some cases, Zn, Cd, Pb and other metals). Intensive treatment (by chemical dosing with enhanced sedimentation or alternative processes, such as sulphidization or reverse osmosis) is often necessary only during the first few years following complete flooding of mine voids. Passive treatment (by the use of gravity-flow geochemical reactors and wetlands) may be both more cost-effective and ecologically more responsible in the long term. By the end of 1999 a total of 28 passive systems had been installed at United Kingdom mine sites, including examples of system types currently unique to the United Kingdom. Early performance data for all the systems are summarized and shown to demonstrate the efficacy of passive treatment when appropriately applied. |
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0371-7844 |
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Holistic remedial strategies for short- and long-term water pollution from abandoned mines; Wos:000167240600013; Times Cited: 2; ISI Web of Science |
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CBU @ c.wolke @ 17458 |
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126 |
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Author |
Zou, L.H. |
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Title |
Sulfide precipitation flotation for treatment of acidic mine waste water |
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Journal Article |
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2000 |
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Transactions of Nonferrous Metals Society of China |
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10 |
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106-109 |
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mine water treatment |
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Sulfide precipitation flotation of copper-iron-bearing acidic waste water from a large copper mine and the stimulated waste water were studied. The pH of the waste water was 2.2, with 130 mg/L Cu2+ and 500 mg/L Fe3+ (Fe2+). Results show that, when Na2S was added as precipitating agent, sodium butylxanthate as collector and at pH 2.0, the removal of copper could be as high as 99.7 % and the residual copper decreased to 0.2 mg/L, however, almost no iron was removed. When the floated solution was neutralized to pH = 8.0, more than 98 % iron was precipitated and the residual iron was less than 10 mg/L. In experiment on actual mine effluents, after the use of precipitate flotation technology to recover copper and pH neutralization to precipitate iron, the treated waste water does meet the emission standards for sewage and valuable floating copper graded 37.12%. The chemical calculation and mechanism of solution were also presented. |
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Sulfide precipitation flotation for treatment of acidic mine waste water; Wos:000088249500025; Times Cited: 0; ISI Web of Science |
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CBU @ c.wolke @ 17086 |
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128 |
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