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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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Keywords |
abandoned mines acid mine drainage Europe mines mining planning pollution remediation United Kingdom water pollution Western Europe |
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Abstract |
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 |
Zinck, J.M.; Aube, B.C. |
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Title |
Optimization of lime treatment processes |
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Journal Article |
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Year |
2000 |
Publication |
CIM Bull. |
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93 |
Issue |
1043 |
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98-105 |
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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 buffering lime Canada |
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Lime neutralization technology is widely used in Canada for the treatment of acid mine drainage and other acidic effluents. In many locations, improvements to the lime neutralization process are necessary to achieve a maximum level of sludge densification and stability. Conventional lime neutralization technology effectively removes dissolved metals to below regulated limits. However, the metal hydroxide and gypsum sludge generated is voluminous and often contains less than 5% solids. Despite recent improvements in the lime neutralization technology, each year, more than 6 700 000 m3 of sludge are generated by treatment facilities operated by the Canadian mining industry. Because lime neutralization is still seen as the best available approach for some sites, sludge production and stability are expected to remain as issues in the near future. Several treatment parameters significantly impact operating costs, effluent quality, sludge production and the geochemical stability of the sludge. Studies conducted both at CANMET and NTC have shown that through minor modifications to the treatment process, plant operators can experience a reduction in operating costs, volume of sludge generated, metal release to the environment and liability. This paper discusses how modifications in plant operation and design can reduce treatment costs and liability associated with lime treatment. |
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J.M. Zinck, CANMET, Mining and Mineral Sciences Lab., Natural Resources Canada, Ottawa, Ont., Canada |
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0317-0926 |
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Optimization of lime treatment processes; 2291672; Canada 17; Geobase |
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CBU @ c.wolke @ 17537 |
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183 |
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Stoica, L.; Dima, G. |
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Pb(II) removal from aqueous systems by biosorption-flotation on mycelial residues of Penicillium chrysogenum |
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Book Chapter |
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2000 |
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7th international Mine Water Association congress; Mine water and the environment |
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472-481 |
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bioremediation; flotation; ground water; lead; metals; Penicillium; Penicillium chrysogenum; pollution; remediation; sorption; water treatment 22, Environmental geology |
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Uniwersytet Slaski |
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Sosnowiec |
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Rozkowski, A. |
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8387431230 |
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Pb(II) removal from aqueous systems by biosorption-flotation on mycelial residues of Penicillium chrysogenum; GeoRef; English; 2002-018169; 7th international Mine Water Association congress; Mine water and the environment, Katowice-Ustron, Poland, Sept. 11-15, 2000 References: 6; illus. incl. 4 tables |
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CBU @ c.wolke @ 5852 |
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228 |
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Author |
Srivastave, A.; Chhonkar, P.K. |
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Title |
Amelioration of coal mine spoils through fly ash application as liming material |
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Journal Article |
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Year |
2000 |
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J. Ind. Res. |
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59 |
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4 |
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309-313 |
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Groundwater problems and environmental effects Pollution and waste management non radioactive geomechanics abstracts: excavations (77 10 10) geological abstracts: environmental geology (72 14 2) mitigation fly ash feasibility study acid mine drainage lime |
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The feasibility of fly ash as compared to lime to ameliorate the low pH of acidic coal mine spoils under controlled pot culture conditions are reported using Sudan grass (Sorghum studanens) and Oats (Avena sativa) as indicator crops. It is observed that at all levels of applications, fly ash and lime significantly increase the pH of mine spoils, available phosphorus, exchangeable potassium, available sulphur and also uptake of phosphorus, potassium, sulphur and oven-dried biomass of both these test crops. The fly ash significantly decreases the bulk density of coal mine spoils, but, there is no effect on bulk density due to lime application. However, when the spoils are amended with either fly ash or lime, the root growth occurs throughout the material. Fly ash and lime do not cause elemental toxicities to the plants as evidenced from the dry matter production by the test crops. The results indicate that fly ash to be a potential alternative to lime for treating acidic coal mine spoils. |
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P.K. Chhonkar, Div. of Soil Sci. and Agr. Chem., Indian Agricultural Research Inst., New Delhi 110 012, India |
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0022-4456 |
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Amelioration of coal mine spoils through fly ash application as liming material; 2364216; India 18; Geobase |
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Call Number |
CBU @ c.wolke @ 17535 |
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234 |
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Author |
Smit, J.P. |
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Title |
Potable water from sulphate polluted mine sources |
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Journal Article |
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Year |
2000 |
Publication |
Mining Environmental Management |
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8 |
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6 |
Pages |
7-9 |
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Keywords |
acid mine drainage; Africa; cost; drinking water; economics; pollutants; pollution; potability; remediation; South Africa; Southern Africa; sulfates; water quality; water resources 21 Hydrogeology; 22 Environmental geology |
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0969-4218 |
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Potable water from sulphate polluted mine sources; 2001-038331; illus. incl. 5 tables United Kingdom (GBR); GeoRef; English |
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CBU @ c.wolke @ 5799 |
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239 |
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