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Bolzicco, J.; Carrera, J.; Ayora, C. |
| Title |
Eficiencia de la barrera permeable reactiva de Aznalcollar (Sevilla, Espana) como remedio de aguas acidas de mina. Reactive permeable disposal barrier at Aznalcollar Mine, Seville, Spain; as remediation for acid mine drainage |
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Journal Article |
| Year |
2004 |
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Revista Latino-Americana de Hidrogeologia |
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4 |
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27-34 |
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abandoned mines acid mine drainage Agrio River Andalusia Spain aquifers Aznalcollar Mine Cenozoic chemical composition chemical ratios copper ores dams disposal barriers drainage basins Europe geochemistry ground water Guadiamar River hydrochemistry Iberian Peninsula Iberian pyrite belt igneous rocks metal ores mineral composition mines mining Miocene Neogene permeability pH pollution reactive barriers remediation sedimentary rocks sediments Seville Spain Southern Europe Spain surface water tailings Tertiary volcanic rocks waste disposal water treatment zinc ores 22, Environmental geology |
Abstract  |
As a result of the collapse of a mine tailing dam in april 1998 about 40 km of the Agrio and Guadiamar valleys were covered with a layer of pyrite sludge. Although most of the sludge was removed, a small amount remains in the soil of the Agrio valley and the aquifer remains polluted with acid water (ph<4) and metals (10 mg/L Zn, 5 mg/L Cu and Al). A permeable reactive barrier was build across the aquifer to increase the alcalinity and retain the metals. The barrier is made up of three sections of 30 m longX1.4 m thickX5 m deep (average) containing different proportions of limestone gravel, organic compost and zero-valent iron. The residence time of the water in the barrier is about two days. Within the barrier, the pH values increase to near neutral mainly due to calcite dissolution. Metals co-precipitate as oxyhydroxides, and they are also adsorbed on the organic matter surface. Down-stream the barrier, the total pollution removal is around 60-90% for Zn and Cu, and from 50 to 90% for Al and acidity. |
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Eficiencia de la barrera permeable reactiva de Aznalcollar (Sevilla, Espana) como remedio de aguas acidas de mina. Reactive permeable disposal barrier at Aznalcollar Mine, Seville, Spain; as remediation for acid mine drainage; 2004-072864; References: 7; illus. incl. geol. sketch map Brazil (BRA); GeoRef; Spanish |
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CBU @ c.wolke @ 16471 |
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443 |
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Goodman, G.T. |
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Ecology and the problems of rehabilitating wastes from mineral extraction |
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Journal Article |
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1974 |
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Proceedings of the Royal Society of London, Series A Mathematical and Physical Sciences |
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339 |
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1618 |
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373-387 |
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minerals mining natural resources pollution waste disposal ecology mineral extraction visual ugliness health hazards safety hazards reclamation process development planning site purchase land clearance land forming stabilisation drainage revegetation rehabilitation of wastes Physics Manufacturing and Production |
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Environmental problems which may be associated with mineral extraction are: (a) the visual ugliness of open pits, waste tips, and working mess; (b) the nuisance of wind- and water-borne dusts; (c) the health hazards to wildlife, crops, livestock and man of locally increased environmental burdens of potentially toxic metals (e.g. Pb, Cd, As, Zn, Cu, Ni) derived from wind- and water-borne mine dusts and smelter smokes; (d) the safety hazards of surface subsidence and tip-slippage from deep-mining. All these disamenities can be cured or reduced by the reclamation process which involves a blend of socio-economic, legal, planning, civil engineering and biological expertise devoted to development planning, site purchase, land clearance, land forming, stabilization, drainage and revegetation of the affected site |
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0080-4630 |
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Ecology and the problems of rehabilitating wastes from mineral extraction; 669765; Conference Paper; Journal Paper; SilverPlatter; Ovid Technologies |
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CBU @ c.wolke @ 16789 |
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369 |
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Adam, K. |
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Solid wastes management in sulphide mines: From waste characterisation to safe closure of disposal sites |
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Journal Article |
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2003 |
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Minerals and Energy Raw Materials Report |
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18 |
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4 |
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25-35 |
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Waste Management and Pollution Policy Pollution and waste management non radioactive geographical abstracts: human geography environmental planning (70 11 5) geological abstracts: environmental geology (72 14 2) waste disposal waste management solid waste mining industry acid mine drainage Europe Eurasia |
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Environmentally compatible Waste Management schemes employed by the European extractive industry for the development of new projects, and applied in operating sulphide mines, are presented in this study. Standard methodologies used to assess the geotechnical and geochemical properties of the solid wastes stemming from mining and processing of sulphidic metal ores are firstly given. Based on waste properties, the measures applied to ensure the environmentally safe recycling and disposal of sulphidic wastes are summarised. Emphasis is given on the novel techniques developed to effectively prevent and mitigate the acid drainage phenomenon from sulphidic mine wastes and tailings. Remediation measures taken to minimise the impact from waste disposal sites in the post-closure period are described. |
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K. Adam, ECHMES Ltd, Mikras Asias 40-42, Athens 11527, Greece echmes@otenet.gr |
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1404-1049 |
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Solid wastes management in sulphide mines: From waste characterisation to safe closure of disposal sites; 2582509; Norway 25; Geobase |
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CBU @ c.wolke @ 17510 |
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492 |
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King, T.V.V. |
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Environmental considerations of active and abandoned mine lands: lessons from Summitville, Colorado |
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Journal Article |
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1995 |
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US Geological Survey Bulletin |
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2220 |
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38 |
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acid mine drainage mining environmental effect remediation environmental assessment USA Colorado Summitville 1 Geography |
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Extreme acid-rock drainage is the dominant long-term environmental concern at the Summitville mine and could have been predicted given the geological characteristics of the deposit. Extensive remedial efforts are required to isolate both unweathered sulfides and soluble metal salts in the open-pit area and mine-waste piles from weathering and dissolution. Results of studies as of late 1993 indicate that mining at Summitville has had no discernible short-term adverse effects on barley or alfalfa crops irrigated with Alamosa River water. Remediation of the site will help to ensure that no adverse effects occur over the longer term. -from Editor |
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Environmental considerations of active and abandoned mine lands: lessons from Summitville, Colorado; (1119406); 95j-11521; Using Smart Source Parsing pp; Geobase |
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CBU @ c.wolke @ 17561 |
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332 |
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Dempsey, B.A.; Jeon, B.-H. |
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Characteristics of sludge produced from passive treatment of mine drainage |
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Journal Article |
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2001 |
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Geochem.-Explor. Environ. Anal. |
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1 |
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1 |
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89-94 |
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acid mine drainage; aerobic environment; anaerobic environment; Appalachian Plateau; Appalachians; carbonate rocks; coagulation; compressibility; decontamination; density; drainage; filtration; geochemistry; Howe Bridge; Jefferson County Pennsylvania; limestone; mining geology; North America; passive systems; Pennsylvania; pH; pollution; ponds; rates; reclamation; sedimentary rocks; settling; sludge; slurries; suspended materials; United States; viscosity; wet packing density; wetlands; zeta-potential 22, Environmental geology |
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In the 1994 paper by Brown, Skousen & Renton it was argued that settleability and wet-packing density were the most important physical characteristics of sludge from treatment of mine drainage. These characteristics plus zeta-potential, intrinsic viscosity, specific resistance to filtration, and coefficient of compressibility were determined for several sludge samples from passive treatment sites and for several sludge samples that were prepared in the laboratory. Sludge from passive systems had high packing density, low intrinsic viscosity, low specific resistance to filtration and low coefficient of compressibility compared to sludge that was produced after addition of NaOH. |
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1467-7873 |
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Feb.; Characteristics of sludge produced from passive treatment of mine drainage; 2002-008382; References: 29; illus. incl. 5 tables United Kingdom (GBR); GeoRef; English |
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CBU @ c.wolke @ 5734 |
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57 |
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