| Records |
| Author |
Campbell, A. |
Title  |
Mitigation of acid rock drainage at the Summitville Mine Superfund Site, Colorado, USA |
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Journal Article |
| Year |
2000 |
Publication |
ICARD 2000, Vols I and II, Proceedings |
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Pages |
1243-1250 |
| Keywords |
mine water treatment |
| Abstract |
Numerous techniques for treating, controlling, and preventing acid rock drainage have been applied at the Summitville Mine Superfund Site. Challenging aspects of the remote mine site include the wide-spread occurrence of acid-generating soils and rocks, extensive surface and underground mine workings, and a cold and wet climate. Water treatment was an immediate necessity when the Government took control of the abandoned site in December of 1992. Subsequent reclamation activities have emphasized prevention and control of ARD to minimize future water treatment requirements. A combination of conventional, innovative, and experimental methods are being applied to successfully mitigate ARD at Summitville. |
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Mitigation of acid rock drainage at the Summitville Mine Superfund Site, Colorado, USA; Isip:000169875500124; Times Cited: 0; ISI Web of Science |
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CBU @ c.wolke @ 17110 |
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165 |
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| Author |
Mustikkamaki, U.-P. |
| Title |
Metallipitoisten vesien biologisesta kasittelysta Outokummun kaivoksilla. Metal content treated with biological methods at the Outokummun operation |
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Journal Article |
| Year |
2000 |
Publication |
Vuoriteollisuus = Bergshanteringen |
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58 |
Issue |
1 |
Pages |
44-47 |
| Keywords |
acid mine drainage anaerobic environment bacteria biodegradation environmental analysis Europe filters Finland metals Outokummun Mine peat pollutants pollution reduction Scandinavia sediments sulfate ion Western Europe zinc 22, Environmental geology |
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Acid mine drainage (AMD) is one of the most serious environmental problems in the metal-mining industry. AMD is formed by the chemical and bacterial oxidation of sulphide minerals, and it is characterized by low pH values and high sulphate and metals content. The most common method to treat AMD is chemical neutralization. The chemical treatment requires high capital and operating costs and its use is problematic at the closed mines sites. Outokumpu has studied and used sulphate reducing bacteria (SRB) as an alternative method for the treatment of AMD. SRB existing in many natural anaerobic aqueous environments can reduce sulphate to sulphide which precipitates metals as extremely insoluble metal sulphides. Full scale experiments were begun in summer 1995 in the Ruostesuo open pit (depth 46 m) by adding liquid manure as a source of bacteria and press-juice as a growth substrate. The average Zn content of the whole column has decreased from 3,5 mg/l to 0,8 mg/l and below 25 m zinc is 0 mg/l. Similar results have been reached with nickel in the Kotalahti old nickel mine, where bacteria were brought in 1996. We have found that the same bacterial mechanism acts in peat-limestone filters, which Outokumpu has built at several mine sites since 1993. |
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0042-9317 |
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Metallipitoisten vesien biologisesta kasittelysta Outokummun kaivoksilla. Metal content treated with biological methods at the Outokummun operation; 2001-069868; illus. incl. 3 tables Finland (FIN); GeoRef; Finnish |
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CBU @ c.wolke @ 16560 |
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291 |
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Juby, G.J.G.; Schutte, C.F. |
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Membrane Life in a Seeded-slurry Reverse Osmosis System |
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Journal Article |
| Year |
2000 |
Publication |
Water Sa |
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26 |
Issue |
2 |
Pages |
239-248 |
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mine water treatment desalination |
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Membrane replacement can be a major operating cost of a membrane plant. During the development of a novel desalination technique (the SPARRO process) for treating calcium sulphate scaling mine waters the expected life of tubular cellulose acetate membranes operating in the seeded-slurry mode was investigated.During four operating phases of the plant over a five-year period more than 9 000 h of operating data were obtained. Performance data showed that each operating phase was dominated by either membrane fouling or membrane hydrolysis. Membrane fouling was observed to begin near the front-end of the membrane stack and proceed towards the back. Hydrolysis, on the other hand, occurred first in the tail end of the stack and moved backwards towards the Front end modules. Although two detailed membrane autopsies were carried out no definitive statement can be made in respect of the causes of either membrane hydrolysis or membrane fouling. However, suggestions are presented to explain the observed fouling phenomenon in relation to the turbidity of the pretreated feed water and the presence of chlorine. It is proposed that the presence of radioactive isotopes in the mine water which become concentrated in the process contributes to the observed membrane hydrolysis. A membrane life of up to two years is projected for an improved pretreatment arrangement. |
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0378-4738 |
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Membrane Life in a Seeded-slurry Reverse Osmosis System; Isi:000087101400013; file:///C:/Dokumente%20und%20Einstellungen/Stefan/Eigene%20Dateien/Artikel/9715.pdf; AMD ISI | Wolkersdorfer |
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CBU @ c.wolke @ 9715 |
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8 |
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Groudev, S.N.; Georgiev, P.S.; Spasova, I.I.; Nicolova, M.N. |
| Title |
In situ treatment of mine waters by means of a permeable barrier |
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Journal Article |
| Year |
2000 |
Publication |
Groundwater 2000 |
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Pages |
417-418 |
| Keywords |
mine water treatment |
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Acid ground waters contaminated with radioactive elements (U, Ra, Th), toxic heavy metals (Cu, Zn, Cd, Mn, Fe), arsenic and sulphates were treated by means of a permeable barrier. The barrier was filled with a mixture of biodegradable solid organic substrates (spent mushroom compost, sawdust and cow manure) and was inhabited by a mixed microbial community consisting of sulphate-reducing bacteria and other metabolically interdependent microorganisms. An efficient removal of the pollutants was achieved by this barrier during the different climatic seasons, even at ambient temperatures close to degrees C. The microbial dissimilatory sulphate reduction and the sorption of pollutants by the organic matter in the barrier were the main processes involved in this removal. |
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In situ treatment of mine waters by means of a permeable barrier; Isip:000088384300185; Times Cited: 0; ISI Web of Science |
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CBU @ c.wolke @ 8407 |
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173 |
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| Author |
Yernberg, W.R. |
| Title |
Improvements seen in acid-mine-drainage technology |
Type |
Journal Article |
| Year |
2000 |
Publication |
Min. Eng. |
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52 |
Issue |
9 |
Pages |
67-70 |
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acid mine drainage; bacteria; chemical weathering; coal mines; Colorado; copper ores; effects; geochemistry; hydrogen; inorganic acids; international cooperation; ions; lead ores; medical geology; metal ores; mines; molybdenum ores; oxidation; pH; pollution; prediction; pyrite; reclamation; remediation; research; risk assessment; silicates; soil treatment; solid waste; sulfides; sulfuric acid; Summitville Mine; tailings; tailings ponds; technology; United States; waste disposal; weathering; zinc ores 22, Environmental geology |
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0026-5187 |
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Improvements seen in acid-mine-drainage technology; 2000-069686; illus. incl. sect., sketch map United States (USA); GeoRef; English |
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| Call Number |
CBU @ c.wolke @ 5808 |
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73 |
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