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Wisotzky, F. |
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Saure Bergbauwässer (Acid Mine Drainage) und deren Qualitätsverbesserung durch Zugabe von alkalisch wirkenden Zuschlagstoffen zum Abraum : Untersuchungen im Rheinischen Braunkohlenrevier |
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2003 |
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Deutsches gewässerkundliches Jahrbuch |
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167 |
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Rheinisches Braunkohlenrevier Grubenwasser Versauerung Pyrit Oxidation Braunkohlentagebau Bergbaurestsee Gewässerversauerung Hydrogeochemie Neutralisation Zuschlagstoff |
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Saure Bergbauwässer (Acid Mine Drainage) und deren Qualitätsverbesserung durch Zugabe von alkalisch wirkenden Zuschlagstoffen zum Abraum : Untersuchungen im Rheinischen Braunkohlenrevier; Nordrhein-Westfalen / Landesumweltamt; Zugl.: Bochum, Univ., Habil.-Schr., 2003; Opac |
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CBU @ c.wolke @ 6918 |
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205 |
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Catalan, L.J.J.; Yin, G. |
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Comparison of calcite to quicklime for amending partially oxidized sulfidic mine tailings before flooding |
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Journal Article |
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2003 |
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Environ Sci Technol |
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37 |
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7 |
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1408-1413 |
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mine water treatment |
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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 |
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CBU @ c.wolke @ 7917 |
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118 |
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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. |
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Title |
Treatment of mine drainage using permeable reactive materials |
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Journal Article |
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2003 |
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Environmental Aspects of Mine Wastes |
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31 |
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361-376 |
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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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McLeod, K.W.; Ciravolo, T.G. |
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Title |
Sensitivity of water tupelo (Nyssa aquatica) and bald cypress (Taxodium distichum) seedlings to manganese enrichment under water-saturated conditions |
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Journal Article |
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2003 |
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Environmental Toxicology and Chemistry |
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22 |
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12 |
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2948-2951 |
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Heavy metals ecological abstracts: pollution (73 7 3) seedling saturated medium biomass manganese sensitivity analysis bioaccumulation Nyssa aquatica Taxodium distichum |
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In anaerobic soils of wetlands, Mn is highly available to plants because of the decreasing redox potential and pH of flooded soil. When growing adjacent to each another in wetland forests, water tupelo (Nyssa aquatica L.) had 10 times greater leaf manganese concentration than bald cypress (Taxodium distichum [L.] Richard). This interspecific difference was examined over a range of manganese-enriched soil conditions in a greenhouse experiment. Water tupelo and bald cypress seedlings were grown in fertilized potting soil enriched with 0, 40, 80, 160, 240, 320, and 400 mg Mn/L of soil and kept at saturated to slightly flooded conditions. Leaf Mn concentration was greater in water tupelo than bald cypress for all but the highest Mn addition treatment. Growth of water tupelo seedlings was adversely affected in treatments greater than 160 mg Mn/L. Total biomass of water tupelo in the highest Mn treatment was less than 50% of the control. At low levels of added Mn, bald cypress was able to restrict uptake of Mn at the roots with resulting low leaf Mn concentrations. Once that root restriction was exceeded, Mn concentration in bald cypress leaves increased greatly with treatment; that is, the highest treatment was 40 times greater than control (4,603 vs 100 < mu >g/g, respectively), but biomass of bald cypress was unaffected by manganese additions. Bald cypress, a tree that does not naturally accumulate manganese, does so under manganese-enriched conditions and without biomass reduction in contrast to water tupelo, which is severely affected by higher soil Mn concentrations. Thus, bald cypress would be less affected by increased manganese availability in swamps receiving acidic inputs such as acid mine drainage, acid rain, or oxidization of pyritic soils. |
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K.W. McLeod, Savannah River Ecology Laboratory, University of Georgia, P.O. Drawer E, Aiken, SC 29802, United States mcleod@srel.edu |
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0730-7268 |
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Sensitivity of water tupelo (Nyssa aquatica) and bald cypress (Taxodium distichum) seedlings to manganese enrichment under water-saturated conditions; 2574798; United-States 15; Geobase |
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CBU @ c.wolke @ 16010 |
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302 |
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Author |
Banks, S.B. |
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The UK coal authority minewater-treatment scheme programme: Performance of operational systems |
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2003 |
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Jciwem |
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17 |
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2 |
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117-122 |
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mine water treatment |
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This paper summarises the performance of minewater-treatment schemes which are operated under the Coal Authority's National Minewater Treatment Programme. Commonly-used design criteria and performance indicators are briefly discussed, and the performance of wetland systems which are operated by the Coal Authority is reviewed. Most schemes for which data are available remove more than 90% iron, and average area-adjusted iron-removal rates range from 1.5 to 5.5 g Fe/m(2). d. These values, which are based on performance calculations, can be distorted by several factors, including the practice of maximising wetland areas to make best use of available land. Removal rates are limited by influent iron loadings, and area-adjusted iron-removal rates should be used with caution when assessing wetland performance. Sizing criteria for all types of treatment system might be refined if more detailed data become available. |
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0951-7359 |
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May; The UK coal authority minewater-treatment scheme programme: Performance of operational systems; Wos:000183641000009; Times Cited: 1; file:///C:/Dokumente%20und%20Einstellungen/Stefan/Eigene%20Dateien/Artikel/10018.pdf; ISI Web of Science |
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CBU @ c.wolke @ 17457 |
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9 |
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