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The BioSulphide Process to treat acid mine drainage and Anaconda tailings at Caribou Mine, New Brunswick |
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2002 |
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2002-3 |
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138 |
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acid mine drainage base metals bioremediation BioSulfide Process biosulfides Canada Caribou Mine copper Eastern Canada experimental studies heavy metals laboratory studies lead Maritime Provinces metal ores metals New Brunswick pollution recovery remediation sulfides tailings waste management water treatment zinc 22 Environmental geology 27A Economic geology, geology of ore deposits |
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Biomet Mining Corporation, R.B.C.C. |
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The BioSulphide Process to treat acid mine drainage and Anaconda tailings at Caribou Mine, New Brunswick; 2004-045115; GeoRef; English; 1702-2649 illus. |
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CBU @ c.wolke @ 16509 |
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495 |
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Entrena, A.L.; Serrano, J.R.; Villoria, A. |
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Descontaminacion de aguas de mina con recuperacion de los metales contenidos en ellas. Decontamination of mine waters by recovering the metals contained within them VIII congreso internacional de Mineria y metalurgia; tomo 8. VIII international conference on Mining and metallurgy; Volume 8 |
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1988 |
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Congreso Internacional de Mineria y Metalurgia, vol.8 |
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156-173 |
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actinides; Castilla y Leon Spain; decontamination; Europe; Iberian Peninsula; iron minerals; Leon region; metals; mines; pollution; recovery; remediation; Salamanca Spain; Southern Europe; Spain; uranium; water pollution 22, Environmental geology |
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Asociacion Nacional de Ingenieros de Minas de Espana, O. |
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Descontaminacion de aguas de mina con recuperacion de los metales contenidos en ellas. Decontamination of mine waters by recovering the metals contained within them VIII congreso internacional de Mineria y metalurgia; tomo 8. VIII international conference on Mining and metallurgy; Volume 8; GeoRef; Spanish; 1997-066026; 8. Congreso internacional de Mineria y metalurgia, Oviedo, Spain, 1988 4 tables |
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CBU @ c.wolke @ 6774 |
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389 |
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Mitchell, P.; Wheaton, A. |
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From environmental burden to natural resource; new reagents for cost-effective treatment of, and metal recovery from, acid rock drainage |
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1999 |
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Sudbury '99; Mining and the environment II; Conference proceedings |
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acid mine drainage Bunker Hill Mine cost decontamination Idaho metal ores mines mitigation natural resources pollution reagents recovery Shoshone County Idaho sludge United States zinc ores 22 Environmental geology 27A Economic geology, geology of ore deposits |
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Acid rock drainage remains the greatest environmental issue faced by the mining sector and as the new millennium approaches, low capital/operating cost treatments remain elusive. Therefore as part of an ongoing process to develop a leading edge, innovative and cost-effective approach, pilot trials were conducted by KEECO in collaboration with the New Bunker Hill Mining Company on a substantial and problematic metal-contaminated acid flow, emanating from underground workings at the Bunker Hill Mine, Idaho. The aims of the work were fourfold. First to assess the capacity of KEECO's unique Silica Micro Encapsulation (SME) reagents and associated dosing systems to cost-effectively decontaminate the acid flow to stringent standards set by the U.S. Environmental Protection Agency (USEPA), where alternative and standard technologies had failed. Second, to demonstrate that treatment using a compact system suitable for underground installation. Third, to demonstrate that the treatment sludge had enhanced chemical stability in absolute terms and relative to standard approaches. Fourth, to examine the potential for resource recovery via sequential precipitation. Although the focus to date has been the development of a cost-effective treatment technology, the latter aim was considered essential in light of the growing pressure on all industrial sectors to develop tools for environmentally sustainable economic growth and the growing demands of stakeholders for improved resource usage and recycling. Two phases of work were undertaken: a laboratory-based scoping exercise followed by installation within the mine workings of a compact reagent delivery/shear mixing unit capable of treating the full flow of 31 L s (super -1) . At a dose rate of 2.0 g L (super -1) (equivalent to a final treated water pH range of 7-9), the SME reagent KB-1 reduced metal concentrations to levels approaching the U.S. Drinking Water Standards, which no other treatment piloted at the site had achieved. Based on the USEPA's Toxicity Characteristic Leaching Procedure, the sludge arising from the treatment was classified as non-hazardous. Operating costs compared favourably with those of lime use, while estimated capital costs were considerably lower due to the compact nature of the reagent delivery system and the rapid settling characteristics of the treatment sediment. Resource recovery was attempted using a two-stage selective precipitation approach. The first stage involved pH adjustment to 5.5 (by addition of 1.5 g L (super -1) of KB-1) to produce a sludge enriched in aluminium, iron and manganese, with lesser amounts of arsenic, nickel, lead and zinc. Further KB-1 addition to a total of 2.1 g L (super -1) generated sludge enriched in zinc (33% by dry weight), demonstrating that resource recovery is theoretically feasible. Further work on downstream processing is required, although it is considered that the most likely route for zinc metal recovery will be high temperature/pressure due to the chemically inert nature of the zinc-rich sediment. |
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Goldsack, D.E.; Belzile, N.; Yearwood, P.; Hall, G.J. |
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0886670470 |
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From environmental burden to natural resource; new reagents for cost-effective treatment of, and metal recovery from, acid rock drainage; GeoRef; English; 2000-048642; Sudbury '99; Mining and the environment II, Sudbury, ON, Canada, Sept. 13-17, 1999 References: 3; illus. incl. 5 tables |
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CBU @ c.wolke @ 16593 |
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296 |
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Okuda, T.; Ema, S.; Ishizaki, C.; Fujimoto, J. |
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Mine drainage treatment and ferrite sludge application |
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1991 |
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NEC Technical Journal |
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44 |
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5 |
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4-16 |
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ferrite applications mining water treatment mine drainage treatment waste water treatment ions metal recovery catalysts environmental problems solution ferrite sludge application iron oxidation bacteria ferrite formation process mine drainage Matsuo Mine magnetic marking materials magnetic fluid metal separation semiactive magnetic damper batteries fish gathering cement tracer Electrical and Electronic Engineering Manufacturing and Production |
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The `ferrite process' is an excellent method for treating waste water containing iron and arsenic, but cannot be directly applied to mine drainage where silicon and aluminum ions are present, because they strongly inhibit ferrite formation. As a result of the development of related technologies such as the elimination of silicon, the concentration of iron, and the oxidation of ferrous ions using iron-oxidation bacteria, a new ferrite formation process has been developed and applied to the mine drainage of the Matsuo Mine. The paper discusses the application of the ferrite sludge to magnetic marking materials, magnetic fluid for metal separation and recovery, and the semiactive magnetic damper is described. The related technologies which will be expected to play an important role in solving the environmental problems are also described. These technologies will change the ferrite sludge to beneficial materials, which can be used for carbon dioxide decomposing catalysts, reuse of dry batteries, fish gathering blocks, and cement tracer for ground improvement |
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0285-4139 |
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Mine drainage treatment and ferrite sludge application; 3991072; Journal Paper; SilverPlatter; Ovid Technologies |
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CBU @ c.wolke @ 16787 |
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279 |
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Scharp, R.A.; Kawahara, F.; Burckle, J.; Allan, J.; Govind, R. |
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Recovery of metals from acid mine drainage Hardrock mining 2002; issues shaping the industry |
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2002 |
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acid mine drainage; bacteria; Berkeley Pit; Butte Montana; cost; decontamination; metals; mining; Montana; pH; pollution; recovery; remediation; Silver Bow County Montana; smelting; sulfates; United States 22, Environmental geology |
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Recovery of metals from acid mine drainage Hardrock mining 2002; issues shaping the industry; GeoRef; English; 2007-046147; Hardrock mining 2002; issues shaping the industry, Westminster, CO, United States, May 7-9, 2002 U. S. Environmental Protection Agency, Office of Research and Development, Washington, DC, United States |
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CBU @ c.wolke @ 5614 |
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251 |
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