| Records |
| Author |
Chen, M.; Li, L.; Grace, J.; Tazaki, K.; Shiraki, K.; Asada, R.; Watanabe, H. |
| Title |
Remediation of acid rock drainage by regenerable natural clinoptilolite |
Type |
Journal Article |
| Year |
2007 |
Publication |
Water, Air, Soil Pollut. |
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| Volume |
180 |
Issue |
1-4 |
Pages |
11-27 |
| Keywords |
mine water treatment |
| Abstract |
Clinoptilolite is investigated as a possible regenerable sorbent for acid rock drainage based on its adsorption capacity for Zn, adsorption kinetics, effect of pH, and regeneration performance. Adsorption of Zn ions depends on the initial concentration and pH. Adsorption/Desorption of Zn reached 75% of capacity after 1-2 h. Desorption depended on pH, with an optimum range of 2.5 to 4.0. The rank of desorption effectiveness was EDTAEDTA > NaCl > NaNO3 > NaOAc > NaHCO3 > Na2CO3 > NaOH > CeCa(OH)(2). For cyclic absorption/desorption, adsorption remained satisfactory for six to nine regenerations with EDTA and NaCl, respectively. The crystallinity and morphology of clinoptilolite remained intact following 10 regeneration cycles. Clinoptilolite appears to be promising for ARD leachate treatment, with significant potential advantages relative to current treatment systems. |
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0049-6979 |
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| Notes |
Mar; Remediation of acid rock drainage by regenerable natural clinoptilolite; Wos:000244030000003; Times Cited: 0; ISI Web of Science |
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Call Number  |
CBU @ c.wolke @ 7319 |
Serial |
17 |
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| Author |
Wolkersdorfer, C. |
| Title |
Tracer tests as a mean of remediation procedures in mines |
Type |
Journal Article |
| Year |
2006 |
Publication |
Uranium in the Environment: Mining Impact and Consequences |
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Issue |
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Pages |
817-822 |
| Keywords |
mine water treatment |
| Abstract |
Mining usually causes severe anthropogenic changes by which the ground- or surface water might be significantly polluted. One of the main problems in the mining industry are acid mine drainage, the drainage of heavy metals, and the prediction of mine water rebound after mine closure. Consequently, the knowledge about the hydraulic behaviour of the mine water within a flooded mine might significantly reduce the costs of mine closure and remediation. In the literature, the difficulties in evaluating the hydrodynamics of flooded mines are well described, although only few tracer tests in flooded mines have been published so far. Most tracer tests linked to mine water problems were related to either pollution of the aquifer or radioactive waste disposal and not the mine water itself. |
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Tracer tests as a mean of remediation procedures in mines; Isip:000233396400084; Times Cited: 0; ISI Web of Science |
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no |
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CBU @ c.wolke @ 7590 |
Serial |
153 |
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Wiseman, I.M.; Rutt, G.P.; Edwards, P.J. |
| Title |
Constructed wetlands for minewater treatment: Environmental benefits and ecological recovery |
Type |
Journal Article |
| Year |
2004 |
Publication |
Water and Environment Journal |
Abbreviated Journal |
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| Volume |
18 |
Issue |
3 |
Pages |
133-138 |
| Keywords |
mine water treatment |
| Abstract |
The ecology of the River Pelenna (in South Wales) was impoverished by polluted discharges from abandoned coal mines. A series of passive constructed wetlands was created in order to treat these discharges and to improve the ecology of the river. A three-year Environment Agency R&D project investigated the performance, environmental benefits and sustainability of the constructed wetlands. It showed that the treatment systems were removing most of the iron contamination. In the reaches downstream from the minewaters, the dissolved-iron concentration quickly dropped below the target level. Invertebrate abundance, trout and riverine bird populations increased in following years. However, occasional overflows from the systems have significantly affected the ecology of one stretch of river The research work has provided an insight into the potential for ecological recovery associated with future minewater treatment. |
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1747-6585 |
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Aug.; Constructed wetlands for minewater treatment: Environmental benefits and ecological recovery; Wos:000230520000002; Times Cited: 0; file:///C:/Dokumente%20und%20Einstellungen/Stefan/Eigene%20Dateien/Artikel/7891.pdf; ISI Web of Science |
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no |
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CBU @ c.wolke @ 7891 |
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68 |
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Blowes, D.W.; Bain, J.G.; Smyth, D.J.; Ptacek, C.J.; Jambor, J.L.; Blowes, D.W.; Ritchie, A.I.M. |
| Title |
Treatment of mine drainage using permeable reactive materials |
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Journal Article |
| Year |
2003 |
Publication |
Environmental Aspects of Mine Wastes |
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| Volume |
31 |
Issue |
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Pages |
361-376 |
| Keywords |
acid mine drainage; acidification; aquatic environment; aquifer vulnerability; aquifers; bacteria; biodegradation; Canada; case studies; chemical reactions; Cochrane District Ontario; concentration; damage; degradation; disposal barriers; Eastern Canada; effluents; environmental analysis; ferric iron; Fry Canyon; ground water; iron; Kidd Creek Site; metal ores; metals; mines; models; Monticello Canyon; Ontario; pollution; preferential flow; reactive barriers; remediation; sediments; solid waste; sulfate ion; sulfates; sulfides; tailings; Timmins Ontario; United States; uranium ores; Utah; waste disposal; waste management; waste rock mine water treatment |
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0144-7815 |
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Treatment of mine drainage using permeable reactive materials; Ccc:000186842900017; Times Cited: 0; ISI Web of Science |
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CBU @ c.wolke @ 7910 |
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182 |
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Catalan, L.J.J.; Yin, G. |
| Title |
Comparison of calcite to quicklime for amending partially oxidized sulfidic mine tailings before flooding |
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Journal Article |
| Year |
2003 |
Publication |
Environ Sci Technol |
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| Volume |
37 |
Issue |
7 |
Pages |
1408-1413 |
| Keywords |
mine water treatment |
| Abstract |
Flooding partially oxidized mine tailings for the purpose of mitigating further oxidation of sulfide minerals and generation of acid drainage is generally preceded by treatment with alkaline amendments to prevent releasing previously accumulated acidity to the water cover. This work compares the ability of calcite (CaCO3) and quicklime (CaO), two common amendments, to establish and maintain pH conditions and dissolved metal concentrations within environmentally acceptable ranges over long time periods. Although higher initial pH values were obtained with quicklime, the pH of quicklime treated tailings decreased over time. This was attributed to the low buffering capacity of quicklime treated tailings and to the consumption of hydroxide ions by incongruent dissolution of water-insoluble iron oxyhydroxysulfate minerals. In contrast, the pH of tailings treated with calcite increased initially and then remained stable at pH approximate to 6.7. This pH behavior was due to the lower reactivity of iron oxyhydroxysulfates with calcite, the increased buffering capacity provided by bicarbonate ions, and the incomplete dissolution of calcite. Overall, calcite was found preferable to quicklime for maintaining long-term neutral pH conditions in the treated tailings. With the exception of zinc, acceptable dissolved metal concentrations were achieved with calcite treated tailings. |
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0013-936x |
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Apr. 01; Comparison of calcite to quicklime for amending partially oxidized sulfidic mine tailings before flooding; Wos:000181977000050; Times Cited: 2; file:///C:/Dokumente%20und%20Einstellungen/Stefan/Eigene%20Dateien/Artikel/7917.pdf; ISI Web of Science |
Approved |
no |
| Call Number |
CBU @ c.wolke @ 7917 |
Serial |
118 |
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