| Records |
| Author |
Eger, P. |
| Title |
Sulfate reduction for the treatment of acid mine drainage; Long term solution or short term fix? |
Type |
Journal Article |
| Year |
1995 |
Publication |
Sudbury '95 – Mining and the Environment, Conference Proceedings, Vols 1-3 |
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Issue |
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Pages |
515-524 |
| Keywords |
mine water treatment |
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Notes  |
Sulfate reduction for the treatment of acid mine drainage; Long term solution or short term fix?; Isip:A1995bg39j00052; Times Cited: 0; ISI Web of Science |
Approved |
no |
| Call Number |
CBU @ c.wolke @ 8887 |
Serial |
139 |
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| Author |
Al, T.A. |
| Title |
Storm-water hydrograph separation of run off from a mine-tailings impoundment formed by thickened tailings discharge at Kidd Creek, Timmins, Ontario |
Type |
Journal Article |
| Year |
1996 |
Publication |
Journal of Hydrology |
Abbreviated Journal |
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| Volume |
180 |
Issue |
1-4 |
Pages |
55-78 |
| Keywords |
mine water treatment |
| Abstract |
The Kidd Creek Cu-Zn sulphide mine is located near Timmins, Ontario. Mill tailings are thickened and deposited as a thickened slurry in a circular, conical-shaped pile with an area of approximately 1200 ha. Deposition of tailings as a thickened slurry results in a relatively uniform grain-size distribution and hydraulic conductivity, and a thick tension-saturated zone above the water table. The tailings are drained by numerous small, ephemeral stream channels, which have developed in a radial pattern. During storms, water from these streams collects in catchment ponds where it is held before treatment. The contribution of tailings pore water to the run off is of interest because of the potential for discharge of pore water containing high concentrations of Fe(II)-acidity, metals and SO4 to the stream. Hydraulic head measurements, measurements of water-table elevation and groundwater how modelling were conducted to determine the mechanisms responsible for tailings pore water entering the surface streams. Chemical hydrograph separation of storm run off in one of these streams, during three rainfall events, using Na and Cl as conservative tracers, indicates that the integrated tailings pore water fraction makes up between less than 1% and 20% of the total hydrograph. This range is less than the maximum fraction of tailings pore water of 22-65% reported for run off from a conventional tailings deposit. At this site, preferential flow through permeable fractures may be the dominant mechanism causing discharge of tailings pore water to storm run off. Estimates of the mass of Fe(II) that discharges to the surface run off from the pore water range up to 2800 mg s(-1) during a moderate intensity, long duration rainfall event. The greatest potential for discharge of significant masses of solutes derived from the pore water exists during long duration rainfall events, when the water table rises to the surface over large areas of the tailings impoundment. |
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Storm-water hydrograph separation of run off from a mine-tailings impoundment formed by thickened tailings discharge at Kidd Creek, Timmins, Ontario; Wos:A1996up76700004; Times Cited: 7; ISI Web of Science |
Approved |
no |
| Call Number |
CBU @ c.wolke @ 17162 |
Serial |
85 |
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| Author |
Bell, A.V. |
| Title |
Some Recent Experiences In Treatment Of Acidic, Metal-Bearing Mine Drainages |
Type |
Journal Article |
| Year |
1975 |
Publication |
CIM Bull. |
Abbreviated Journal |
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| Volume |
68 |
Issue |
764 |
Pages |
39-46 |
| Keywords |
mine water treatment |
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Some Recent Experiences In Treatment Of Acidic, Metal-Bearing Mine Drainages; Wos:A1975az60400006; Times Cited: 1; ISI Web of Science |
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no |
| Call Number |
CBU @ c.wolke @ 9249 |
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99 |
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| Author |
Mitchell, P. |
| Title |
Silica micro encapsulation: An innovative commercial technology for the treatment of metal and radionuclide contamination in water and soil |
Type |
Journal Article |
| Year |
2000 |
Publication |
Environmental Issues and Management of Waste in Energy and Mineral Production |
Abbreviated Journal |
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Issue |
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Pages |
307-314 |
| Keywords |
mine water treatment |
| Abstract |
Klean Earth Environmental Company (KEECO) has developed the Silica Micro Encapsulation (SME) technology to treat heavy metals and radionuclides in water and soil. Unlike conventional neutralization/precipitation methods, SME encapsulates the contaminants in a permanent silica matrix resistant to degradation under even extreme environmental conditions. Encapsulated metals and radionuclides are effectively immobilized, minimising the potential for environmental contamination and impacts on human or ecosystem health. The effectiveness of SME has been proven through independent reviews, laboratory and field trials and commercial contracts, and the technology can be used to control and prevent acid drainage and the transport of soluble metals from mine sites, tailings areas, landfills and industrial sites. Successful demonstrations in the treatment of sediments and in brownfield redevelopment, treatment of metal-finishing wastewaters, and control of hazardous, low-level, and mixed waste at DOE/DOD sites and commercial nuclear power plants have also been undertaken. This paper describes the reactions involved in the SME process, the methods by which SME chemicals are introduced to various media, and recent project applications relevant to the cost effective remediation and prevention of environmental problems arising from energy and mineral production. |
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Silica micro encapsulation: An innovative commercial technology for the treatment of metal and radionuclide contamination in water and soil; Isip:000088357300049; Times Cited: 0; ISI Web of Science |
Approved |
no |
| Call Number |
CBU @ c.wolke @ 17088 |
Serial |
174 |
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| Author |
Burt, R.A.; Caruccio, F.T. |
| Title |
The effect of limestone treatments on the rate of acid generation from pyritic mine gangue |
Type |
Journal Article |
| Year |
1986 |
Publication |
Environmental geochemistry and health |
Abbreviated Journal |
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| Volume |
8 |
Issue |
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Pages |
8 |
| Keywords |
mine water treatment |
| Abstract |
Surface water enters the Haile Gold Mine, Lancaster County, South Carolina by means of a small stream and is ponded behind a dam and in an abandoned pit. This water is affected by acidic drainage. In spite of the large exposures of potentially acid producing pyritic rock, the flux of acid to the water is relatively low. Nevertheless, the resulting pH values of the mine water are low (around 3.5) due to negligible buffering capacity. In view of the observed low release of acidity, the potential for acid drainage abatement by limestone ameliorants appears feasible. This study investigated the effects of limestone treatment on acid generation rates of the Haile mine pyritic rocks through a series of leaching experiments. Below a critical alkalinity threshold value, solutions of dissolved limestone were found consistently to accelerate the rate of pyrite oxidation by varying degrees. The oxidation rates were further accelerated by admixing solid limestone with the pyritic rock. However, after a period of about a month, the pyrite oxidation rate of the admixed samples declined to a level lower than that of untreated pyrite. Leachates produced by the pyrite and limestone mixtures contained little if any iron. Further, in the mixtures, an alteration of the pyrite surface was apparent. The observed behaviour of the treated pyrite appears to be related to the immersion of the pyrite grains within a high alkalinity/high pH environment. The high pH increases the rate of oxidation of ferrous iron which results in a higher concentration of ferric iron at the pyrite surface. This, in turn, increases the rate of pyrite oxidation. Above a threshold alkalinity value, the precipitation of hydrous iron oxides at the pyrite surface eventually outpaces acid generation and coats the pyrite surface, retarding the rate of pyrite oxidation. |
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0269-4042 |
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| Notes |
Sept; The effect of limestone treatments on the rate of acid generation from pyritic mine gangue; London: Chapman & Hall; file:///C:/Dokumente%20und%20Einstellungen/Stefan/Eigene%20Dateien/Artikel/7021.pdf; Opac |
Approved |
no |
| Call Number |
CBU @ c.wolke @ 7021 |
Serial |
14 |
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