| |
Records |
Links |
|
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 |
Abbreviated Journal |
|
|
| |
Volume |
|
Issue  |
|
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. |
|
| |
Address |
|
|
| |
Corporate Author |
|
Thesis |
|
|
| |
Publisher |
|
Place of Publication |
|
Editor |
Zamora, B.A.; Connolly, R.E. |
|
| |
Language |
|
Summary Language |
|
Original Title |
|
|
| |
Series Editor |
|
Series Title |
The challenge of integrating diverse perspectives in reclamation |
Abbreviated Series Title |
|
|
| |
Series Volume |
|
Series Issue |
|
Edition |
|
|
| |
ISSN |
|
ISBN |
|
Medium |
|
|
| |
Area |
|
Expedition |
|
Conference |
|
|
| |
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 |
|
| Permanent link to this record |
| |
|
| |
|
Author |
Edwards, P.J.; Bolton, C.P.; Ranson, C.M.; Smith, A.C. |
|
| |
Title |
|
Type |
Book Whole |
| |
Year |
1997 |
Publication |
|
Abbreviated Journal |
|
|
| |
Volume |
|
Issue |
|
Pages |
17-32 |
|
| |
Keywords |
wetland Pelenna mine water |
|
| |
Abstract |
|
|
| |
Address |
|
|
| |
Corporate Author |
|
Thesis |
|
|
| |
Publisher |
Chartered Institution of Water and Environmental Management |
Place of Publication |
London |
Editor |
Younger Paul, L. |
|
| |
Language |
|
Summary Language |
|
Original Title |
|
|
| |
Series Editor |
|
Series Title |
Minewater Treatment Using Wetlands |
Abbreviated Series Title |
|
|
| |
Series Volume |
|
Series Issue |
|
Edition |
|
|
| |
ISSN |
|
ISBN |
|
Medium |
|
|
| |
Area |
|
Expedition |
|
Conference |
|
|
| |
Notes |
The River Pelenna minewater treatment project; 1; AMD ISI | Wolkersdorfer; Fg |
Approved |
no |
|
| |
Call Number |
CBU @ c.wolke @ 9607 |
Serial |
395 |
|
| Permanent link to this record |
| |
|
| |
|
Author |
Earley, D., III; Schmidt, R.D.; Kim, K. |
|
| |
Title |
Is sustainable mining an oxymoron? |
Type |
Journal Article |
| |
Year |
1997 |
Publication |
|
Abbreviated Journal |
|
|
| |
Volume |
|
Issue |
|
Pages |
|
|
| |
Keywords |
acids data processing development ground water leaching mineral resources mining mining geology models monitoring pollution production solutions 26A Economic geology, general, deposits 22 Environmental geology |
|
| |
Abstract |
Sustainable mining is generally considered to be an oxymoron because mineral deposits are viewed as nonrenewable resources that are fixed in the crust. However, minerals are conserved and recycled by plate tectonics which continually creates and destroys ore deposits. Though it is true that rock cycles have much longer periods than biomass cycles, the crust is essentially an infinite reservoir so long as we continue to invest in mineral exploration and processing technology. Implicit in the definition of sustainable development is the recognition that human development of resources in one reservoir may subsequently degrade resources supplied by another. The depreciation of overlapping and adjacent resources is often externalized in the cost to benefit accounting and cannot be sustained if the integrated cost/benefit ratio is greater than 1. The greatest obstacle to sustainability in mining is the expanding scale of excavation required to develop leaner ores because this activity degrades connected resources. In the case of open pit, sulfide ore mining the disturbed land may produce acid rock drainage (ARD). Because ARD will self-generate over the course of tens to hundreds of years the cost of controlling this pollution and rehabilitating mined lands is large and often spread over many generations. Secondary production of minerals from partially excavated deposits where there are preexisting environmental impacts and mine infrastructure help to reduce the risk of depreciating pristine resources, provided that new mining operations “do no (additional) harm” (Margoles, 1996). In turn, a percentage of the profits derived from secondary mineral production can be used for rehabilitation of the previously mined lands. These lands contain significant, albeit low grade, metal concentrations. These concepts are being developed and tested at the Mineral Park Sustainable Mining Research Facility where an in situ copper sulfide mining field experiment was conducted. Monitoring data and computer modeling indicate that ARD is not generated after closure. This is because the ore is not disturbed and is left saturated, whereas unsaturated conditions generate acidic drainage. The short term risk of groundwater contamination is mitigated by utilizing an exempt mine pit to capture any leach solutions that are not intercepted by the wellfield. Using green accounting techniques and transfer models it can be communicated that this mining scenario is an approach to sustainability. |
|
| |
Address |
|
|
| |
Corporate Author |
|
Thesis |
|
|
| |
Publisher |
Abstracts with Programs - Geological Society of America |
Place of Publication |
|
Editor |
|
|
| |
Language |
|
Summary Language |
|
Original Title |
|
|
| |
Series Editor |
|
Series Title |
Geological Society of America, 1997 annual meeting |
Abbreviated Series Title |
|
|
| |
Series Volume |
|
Series Issue |
|
Edition |
|
|
| |
ISSN |
|
ISBN |
|
Medium |
|
|
| |
Area |
|
Expedition |
|
Conference |
|
|
| |
Notes |
1998-051450; Geological Society of America, 1997 annual meeting, Salt Lake City, UT, United States, Oct. 20-23, 1997; GeoRef; English |
Approved |
no |
|
| |
Call Number |
CBU @ c.wolke @ 16638 |
Serial |
396 |
|
| Permanent link to this record |
| |
|
| |
|
Author |
Dumpleton, S. |
|
| |
Title |
Mitigation of minewater pollution; the need for research, monitoring and prevention |
Type |
Journal Article |
| |
Year |
1998 |
Publication |
Earthwise (Keyworth) |
Abbreviated Journal |
|
|
| |
Volume |
12 |
Issue |
|
Pages |
12-13 |
|
| |
Keywords |
acid mine drainage; coal mines; coal seams; disposal barriers; engineering geology; England; Europe; fractures; Great Britain; ground water; hydrogeology; hydrology; inorganic acids; mines; mining; mining geology; mitigation; pollution; pumping; remediation; runoff; sulfuric acid; surface water; United Kingdom; waste disposal; water table; Western Europe 22, Environmental geology |
|
| |
Abstract |
|
|
| |
Address |
|
|
| |
Corporate Author |
|
Thesis |
|
|
| |
Publisher |
|
Place of Publication |
|
Editor |
|
|
| |
Language |
|
Summary Language |
|
Original Title |
|
|
| |
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
| |
Series Volume |
|
Series Issue |
|
Edition |
|
|
| |
ISSN |
0967-9669 |
ISBN |
|
Medium |
|
|
| |
Area |
|
Expedition |
|
Conference |
|
|
| |
Notes |
Mitigation of minewater pollution; the need for research, monitoring and prevention; 1998-075248; illus. incl. sect. United Kingdom (GBR); GeoRef; English |
Approved |
no |
|
| |
Call Number |
CBU @ c.wolke @ 6120 |
Serial |
399 |
|
| Permanent link to this record |
| |
|
| |
|
Author |
Diz, H.R. |
|
| |
Title |
Chemical and biological treatment of acid mine drainage for the removal of heavy metals and acidity |
Type |
Book Whole |
| |
Year |
1997 |
Publication |
|
Abbreviated Journal |
|
|
| |
Volume |
|
Issue |
|
Pages |
|
|
| |
Keywords |
acid mine drainage; copper; effluents; ferrous iron; heavy metals; iron; manganese; metals; nickel; oxidation; pH; pollution; precipitation; rates; tailings; temperature; waste water; zinc 22, Environmental geology |
|
| |
Abstract |
|
|
| |
Address |
|
|
| |
Corporate Author |
|
Thesis |
Ph.D. thesis |
|
| |
Publisher |
Virginia Polytechnic Institute and State University, |
Place of Publication |
Blacksburg |
Editor |
|
|
| |
Language |
|
Summary Language |
|
Original Title |
|
|
| |
Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
|
| |
Series Volume |
|
Series Issue |
|
Edition |
|
|
| |
ISSN |
|
ISBN |
|
Medium |
|
|
| |
Area |
|
Expedition |
|
Conference |
|
|
| |
Notes |
Chemical and biological treatment of acid mine drainage for the removal of heavy metals and acidity; GeoRef; English |
Approved |
no |
|
| |
Call Number |
CBU @ c.wolke @ 6316 |
Serial |
400 |
|
| Permanent link to this record |
