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Author Kauffman, J.W.
Title Microbiological Treatment Of Uranium-Mine Waters Type Journal Article
Year (up) 1986 Publication Environ Sci Technol Abbreviated Journal
Volume 20 Issue 3 Pages 243-248
Keywords mine water treatment
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Notes Microbiological Treatment Of Uranium-Mine Waters; Wos:A1986a219600007; Times Cited: 26; ISI Web of Science Approved no
Call Number CBU @ c.wolke @ 14751 Serial 93
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Author Catalan, L.J.J.; Yin, G.
Title Comparison of calcite to quicklime for amending partially oxidized sulfidic mine tailings before flooding Type Journal Article
Year (up) 2003 Publication Environ Sci Technol Abbreviated Journal
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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Notes 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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Author Wingenfelder, U.; Hansen, C.; Furrer, G.; Schulin, R.
Title Removal of heavy metals from mine waters by natural zeolites Type Journal Article
Year (up) 2005 Publication Environ Sci Technol, ES & T Abbreviated Journal
Volume 39 Issue 12 Pages 4606-4613
Keywords Groundwater problems and environmental effects Pollution and waste management non radioactive remediation heavy metal mine drainage acid mine drainage; acidification; Central Europe; chemical composition; chemical fractionation; dissolved materials; Europe; framework silicates; geochemistry; grain size; heavy metals; hydrochemistry; ion exchange; lead; metals; mines; mining; mobilization; models; pH; pollutants; pollution; precipitation; remediation; samples; silicates; spectra; Switzerland; toxic materials; X-ray diffraction data; X-ray fluorescence spectra; zeolite group
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Address G. Furrer, Institute of Terrestrial Ecology, Swiss Federal Institute of Technology, Zurich, Grabenstrasse 3, CH-8952 Schlieren, Switzerland gerhard.furrer@env.ethz.ch
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Notes Removal of heavy metals from mine waters by natural zeolites; 2006-086777; References: 42; illus. incl. 3 tables United States (USA); GeoRef; English Approved no
Call Number CBU @ c.wolke @ 5382 Serial 71
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