| Records |
| Author |
Eger, P.; Melchert, G.; Antonson, D.; Wagner, J. |
| Title |
Magnesium hydroxide as a treatment for acid mine drainage in northern Minnesota |
Type |
Book Chapter |
| Year |
1993 |
Publication |
Proceedings of the Annual National Meeting – American Society for Surface Mining and Reclamation, vol.10 |
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| Volume |
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Issue |
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Pages |
204-217 |
| Keywords |
acid mine drainage acidification alkaline earth metals chemical properties cobalt copper drainage experimental studies hydroxides laboratory studies lime magnesium magnesium hydroxide metals Minnesota nickel northern Minnesota oxides pH pollution porous materials reagents remediation residence time trace metals United States waste disposal zinc 22, Environmental geology |
| Abstract |
Three alkaline materials were investigated for their suitability to treat acid mine drainage generated by a research facility located at a remote site in northern Minnesota. The materials investigated were hydrated lime, sodium hydroxide, and magnesium hydroxide. All three reagents were successful at raising pH and removing trace metals from the drainage, but the magnesium hydroxide had the added benefit of producing a maximum pH of approximately 9.5, while the other two reagents resulted in pH values of 12 and greater. In addition, the magnesium hydroxide was available as a high solid content slurry (58%) which simplified application and handling, and which produced the lowest volume of sludge of the materials tested. |
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Zamora, B.A.; Connolly, R.E. |
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The challenge of integrating diverse perspectives in reclamation |
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| Notes |
Magnesium hydroxide as a treatment for acid mine drainage in northern Minnesota; GeoRef; English; 2002-028930; 10th annual national meeting of the American Society for Surface Mining and Reclamation, Spokane, WA, United States, May 16, 1993 References: 7; illus. incl. 4 tables |
Approved |
no |
| Call Number |
CBU @ c.wolke @ 16743 |
Serial |
393 |
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| Author |
Burnett, M.; Skousen, J.G.; Skousen, J.G.; Ziemkiewicz, P.F. |
| Title |
Injection of limestone into underground mines for AMD control |
Type |
Book Chapter |
| Year |
1996 |
Publication |
Acid mine drainage control and treatment |
Abbreviated Journal |
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Issue |
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Pages |
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| Keywords |
acid mine drainage; acidification; alkalinity; carbonate rocks; chemical composition; coal fields; concentration; environmental analysis; environmental management; experimental studies; geologic hazards; ground water; hazardous waste; heavy metals; hydrology; land subsidence; limestone; mines; mining; mining geology; pH; pollution; Preston County West Virginia; reclamation; runoff; sedimentary rocks; Sovern Run Mine; surface water; underground mining; United States; waste management; water quality; West Virginia 22, Environmental geology |
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West Virginia University and the National Mine Land Reclamation Center |
Place of Publication |
Morgantown |
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| Notes |
Injection of limestone into underground mines for AMD control; GeoRef; English; 2004-051160; Edition: 2 References: 2; illus. incl. 1 table |
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no |
| Call Number |
CBU @ c.wolke @ 6370 |
Serial |
427 |
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| Author |
Benzaazoua, M.; Bussiere, B. |
| Title |
Desulphurization of tailings with low neutralizing potential; kinetic study and flotation modeling |
Type |
Book Chapter |
| Year |
1999 |
Publication |
Sudbury '99; Mining and the environment II; conference proceedings |
Abbreviated Journal |
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acid mine drainage chemical properties chemical reactions environmental analysis environmental effects experimental studies flotation geochemistry kinetics laboratory studies mathematical models neutralization pH pollution sulfur tailings 22 Environmental geology 02A General geochemistry |
| Abstract |
Environmental desulphurization is an attractive alternative for acid generating tailings management as demonstrated during the last few years. In fact, such process placed at the end of the primary treatment circuit allows to reduce greatly the amount of problematic tailings by concentrating the sulphidic fraction. Moreover, the desulphurized tailings (non-acid generating) have the geotechnical and environmental properties for being used as fine material in a cover with capillary barrier effects. To produce desulphurized tailings, non selective froth flotation is the most adapted method as shown in many previous works. Desulphurization level is fixed by tailings sulphur content (or sulphide content) and neutralization potential NP. The final residue should have enough NP to compensate for his acid generating potential AP. In this paper, the authors present the results of laboratory tests conducted in Denver cells for studying the sulphide flotation kinetics of four mine tailings which are characterized by a weak neutralization potential (under 37 kg CaCO (sub 3) /t). Tailings 1, 2, 3 and 4 contain respectively 5.27, 10, 4.25 and 16.9 sulphur Wt. %. Tailings 1 and 2 are cyanide free and are well floated at pH around 11 by using amyl xanthate as collector. Collector dosage was optimized for these tailings and the results show that Tailing 2 need more collector. However, Tailings 3 and 4, which come from a gold cyanidation process, could not provide good sulphide recovery with xanthate collector because of the pyrite depression. To overcome this problem, amine acetate was used successfully but induces important entrainment. The consumption of this collector was also optimized. The results of kinetic tests and collector dosage were combined and modeled to establish relationships which allow to estimate the desulphurization performances. |
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Goldsack, D.; Belzile, N.; Yearwood, P.; Hall, G. |
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0886670470 |
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| Notes |
Desulphurization of tailings with low neutralizing potential; kinetic study and flotation modeling; GeoRef; English; 2002-060841; Sudbury '99; Mining and the environment II--Sudbury '99; L'exploitation miniere et l'environnement, Sudbury, ON, Canada, Sept. 13-17, 1999 References: 26; illus. incl. 5 tables |
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no |
| Call Number |
CBU @ c.wolke @ 16572 |
Serial |
452 |
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| Author |
Aytas, S.O.; Akyil, S.; Aslani, M.A.A.; Aytekin, U. |
| Title |
Removal of uranium from aqueous solutions by diatomite (Kieselguhr) |
Type |
Journal Article |
| Year |
1999 |
Publication |
Journal of Radioanalytical and Nuclear Chemistry |
Abbreviated Journal |
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| Volume |
240 |
Issue |
3 |
Pages |
973-976 |
| Keywords |
acid mine drainage; actinides; adsorption; aqueous solutions; clastic rocks; concentration; decontamination; diatomite; experimental studies; isotherms; laboratory studies; metals; pH; physicochemical properties; pollution; remediation; sedimentary rocks; solutes; sorption; techniques; uranium; uranyl ion; waste disposal; waste water 22, Environmental geology |
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0236-5731 |
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Removal of uranium from aqueous solutions by diatomite (Kieselguhr); 2000-058980; References: 18; illus. incl. 3 tables International (III); GeoRef; English |
Approved |
no |
| Call Number |
CBU @ c.wolke @ 5964 |
Serial |
471 |
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| Author |
Ahmed, S.M. |
| Title |
Surface chemical methods of forming hardpan in pyrrhotite tailings and prevention of the acid mine drainage |
Type |
Journal Article |
| Year |
1994 |
Publication |
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Issue |
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Pages |
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acid mine drainage; chemical composition; experimental studies; mines; oxidation; pollution; pyrite; pyrrhotite; remediation; sulfides; tailings; waste disposal; weathering rinds 22, Environmental geology |
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Special Publication - United States. Bureau of Mines, Report: BUMINES-SP-06B-94 |
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Proceedings of the International land reclamation and mine drainage conference and Third international conference on The abatement of acidic drainage; Volume 2 of 4; Mine drainage |
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2007-045205; International land reclamation and mine drainage conference; International conference on The abatement of acidic drainage, Pittsburgh, PA, United States, April 24-29, 1994 References: 4; illus. incl. 1 table; GeoRef; English |
Approved |
no |
| Call Number |
CBU @ c.wolke @ 6593 |
Serial |
488 |
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