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Author |
Guay, R.; Cantin, P.; Karam, A.; Vezina, S.; Paquet, A.; Ballester, R.A. and A. |
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Title |
Effect of flooding of oxidized mine tailings on T. ferrooxidans and T. thiooxidans survival and acid mine drainage production: a 4 year restoration-environmental follow-up |
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Book Chapter |
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Year |
1999 |
Publication |
Process Metallurgy |
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635-643 |
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Abstract |
A pilot-scale study on the effect of flooding unoxidized and oxidized Cu/Zn tailings demonstrated the technical feasability of this technology to remediate a mining site where over 3 million tons of tailings were impounded. Full-scale flooding of the tailing pond with free running water was undertaken after the construction of an impervious dam; approximately 2 million m3 of surface water at pH 7,4 completely covered the tailings after 16 months. The minimal water column over the tailings was established at 1,20 m and reached 4,5 m, depending on the site topography. Water and tailings samples were collected from 9 different locations from the surface of the man-made lake using a specially designed borer and were analyzed for pH, conductivity, iron- and sulfur-oxidizing bacteria activity and numbers as well as the sulfate reducing bacteria (SRB) population. We showed that over a four year period of flooding, the overall population of iron-oxidizers decreased considerably; their numbers drastically fell from 1x106 to 1x102 active cells per g of oxidized tailings while the SRBs increased from 101 to 105/g. The pH of the influent, the reservoir and the effluent water remained fairly constant between 6,9 up to 7,4 over the entire period. During this time, interstitial water pH increased from 2,9 to 4,3 in flooded tailings where lime could not be incorporated in the first 20 cm of tailings; elsewhere, the pH of the tailings suspensions remained fairly constant around neutral values (pH 7,0). Dissolved oxygen was measured at fixed intervals and remained also constant between 6 and 7.5 mg/L while water temperatures fluctuated below freezing point to +20C respectively in winter and summer season. |
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Elsevier Science B.V. |
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Volume 9, Part 2 |
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Effect of flooding of oxidized mine tailings on T. ferrooxidans and T. thiooxidans survival and acid mine drainage production: a 4 year restoration-environmental follow-up; Science Direct |
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CBU @ c.wolke @ 17271 |
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33 |
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Agency, U.S.E.P.; Development, O. of R. and |
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Title |
Active and semi-passive lime treatment of acid mine drainage at Leviathan Mine, California |
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RPT |
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Year |
2006 |
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94 |
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National Risk Management Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency |
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Cincinnati, OH |
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Mar; Active and semi-passive lime treatment of acid mine drainage at Leviathan Mine, California; file:///C:/Dokumente%20und%20Einstellungen/Stefan/Eigene%20Dateien/Artikel/7171.pdf; Opac |
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CBU @ c.wolke @ 7171 |
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62 |
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Laboratory, N.R.M.R. |
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Title |
Demonstration of Aquafix and SAPS passive mine water treatment technologies at the Summitville Mine site |
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2004 |
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Cincinnati, Ohio : National Risk Management Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency |
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Cincinnati, Ohio |
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June; Demonstration of Aquafix and SAPS passive mine water treatment technologies at the Summitville Mine site; file:///C:/Dokumente%20und%20Einstellungen/Stefan/Eigene%20Dateien/Artikel/7186.pdf; Opac |
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CBU @ c.wolke @ 7186 |
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63 |
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Author |
Herbert, R.B., Jr.; Benner, S.G.; Blowes, D.W. |
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Title |
Reactive barrier treatment of groundwater contaminated by acid mine drainage; sulphur accumulation and sulphide formation |
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Book Chapter |
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Year |
1998 |
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Groundwater Quality: Remediation and Protection |
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451-457 |
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Keywords |
acid mine drainage Canada chemical analysis contaminant plumes Eastern Canada ground water hydraulic conductivity hydrolysis Nickel Rim Mine Ontario pH pollution porosity pyrrhotite remediation sample preparation Sudbury Basin sulfides sulfur tailings water pollution 22, Environmental geology |
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Abstract |
A permeable reactive barrier was installed in August 1995 at the Nickel Rim Mine near Sudbury, Ontario, Canada, for the passive remediation of groundwater contaminated with acid mine drainage. The reactive component of the barrier consists of a mixture of municipal and leaf compost and wood chips: the organic material promotes bacterially-mediated sulphate reduction. Hydrogen sulphide, a product of sulphate reduction, may then complex with aqueous ferrous iron and precipitate as iron sulphide. This study presents the solid phase sulphur chemistry of the reactive wall after two years of operation, and discusses the formation and accumulation of iron sulphide minerals in the reactive material. The results from the solid-phase chemical analysis of core samples indicate that there is an accumulation of reduced inorganic sulphur in the reactive wall, with levels reaching 190 mu mol g (super -1) (dry weight) by July 1997. |
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IAHS-AISH Publication, vol.250 |
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Herbert, M.; Kovar, K. |
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1901502554 |
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Reactive barrier treatment of groundwater contaminated by acid mine drainage; sulphur accumulation and sulphide formation; GeoRef; English; 1999-065115; GQ 98 conference, Tubingen, Federal Republic of Germany, Sept. 21-24, 1998 References: 15; illus. |
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CBU @ c.wolke @ 16621 |
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65 |
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Author |
Gale, J.E.; MacLeod, R.; Bursey, G. |
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The role of hydrogeology in developing effective mine water control programs in fractured porous rocks Resources development and Earth science; environmental and economic issues (Abstract) |
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Book Chapter |
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Year |
1999 |
Publication |
Atlantic Geology |
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Volume |
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172 |
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Keywords |
anisotropy; bedrock; controls; fractured materials; fractures; geometry; ground water; heterogeneity; mine dewatering; mines; mining; mining geology; numerical models; permeability; porous materials; remediation; three-dimensional models; underground mining; velocity 21, Hydrogeology |
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35 |
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Pickerill, R.K.; Barr, S.M.; Williams, G.L. |
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The role of hydrogeology in developing effective mine water control programs in fractured porous rocks Resources development and Earth science; environmental and economic issues (Abstract); GeoRef; English; 2000-073328; Geological Association of Canada, 1999 annual technical meeting, Newfoundland Section, Saint Johns, NL, Canada, Feb. 22-23, 1999 |
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CBU @ c.wolke @ 5958 |
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69 |
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