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Aytas, S.O.; Akyil, S.; Aslani, M.A.A.; Aytekin, U. |
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Title |
Removal of uranium from aqueous solutions by diatomite (Kieselguhr) |
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Journal Article |
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1999 |
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Journal of Radioanalytical and Nuclear Chemistry |
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240 |
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3 |
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973-976 |
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acid mine drainage; actinides; adsorption; aqueous solutions; clastic rocks; concentration; decontamination; diatomite; experimental studies; isotherms; laboratory studies; metals; pH; physicochemical properties; pollution; remediation; sedimentary rocks; solutes; sorption; techniques; uranium; uranyl ion; waste disposal; waste water 22, Environmental geology |
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0236-5731 |
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Removal of uranium from aqueous solutions by diatomite (Kieselguhr); 2000-058980; References: 18; illus. incl. 3 tables International (III); GeoRef; English |
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CBU @ c.wolke @ 5964 |
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471 |
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Fischer, R.; Luckner, L.; Peukert, D.; Reißig, H.; Roßbach, B. |
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Title |
Einsatz alkalischer Substanzen zur Verbesserung der Wasserqualität in Bergbaukippen. Use of alcine substances for the improvement of water quality in mining areas |
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Journal Article |
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2002 |
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Das Gas und Wasserfach. Ausgabe Wasser, Abwasser |
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143 |
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12 |
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891-898 |
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Abraum Braunkohlenbergbau Pyrit Eisensulfid Sulfidmineral Verwitterung Gewässerschutz Schadstoffbelastung Schwermetalle Sulfat pH-Wert Abwasserbehandlung Enteisenung alkalischer-Abbau chemischer-Abbau Alkalisierung Zusatzstoff Kalk Dolomit Flugasche Umweltbelastung Grundwasser Gewässergüte Eisendisulfitverwitterung Pyritverwitterung Bergbauabwasser Bergbauwasser Sulfatbelastung Undergrundwasserbehandlung alkalischer Stoff alkalische Substanz |
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Eisendisulfidminerale im Abraum von Braunkohlentagebauen können nach ihrer Verwitterung im wiederaufsteigenden Grundwasser erhebliche Güteverschlechterungen hinsichtlich pH-Wert, Schwermetall- und Sulfatgehalt verursachen. Diesen kann durch Zusätze alkalischer Substanzen zum Abraum wie Kalkstein, Dolomit und Kraftwerksasche bzw. Gemischen dieser Stoffe entgegengewirkt werden. Die Ergebnisse entsprechender Untersuchungen sowie die naturwissenschaftlichen Grundlagen der Eisendisulfidverwitterung werden im Beitrag dargestellt und ein Anwendungsbeispiel beschrieben. Grundlagen zur Berechnung der einzusetzenden Kalk- oder Aschemengen (bzw. Gemische der beiden Substanzen) sind die Bestimmung der oxidierbaren Sulfidminerale in den einzelnen geologischen Schichten sowie die Bestimmung der Pufferkapazität der Asche bzw. des Kalksteins. Besonders Vorteilhaft ist der Einsatz alkalischer Substanzen dort, wo durch vorhandene hohe Pyrit- und Markasitkonzentrationen mit einer erheblichen Versauerung des Grundwassers gerechnet und dadurch eine potentielle Beeinträchtigung von Grundwassernutzern erwartet werden muss. Solche Bedingungen sind im Rheinischen Braunkohlerevier, insbesondere im Umfeld des Tagebaus Garzweiler II (RWE Rheinbraun AG) gegeben. Derzeit werden im Tagebau Garzweiler bereits 40000 t Kalkstein dem Abraum beigemischt. Auch für das Lausitzer Braunkohlenrevier könnte ein Einsatz alkalischer Substanzen in Betracht gezogen werden. |
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TU Dresden, DE; Sächsisches Oberbergamt, Dresden, DE; RWE Rheinbraun, Köln, DE; Ingenieurbüro für Wassergütefragen, Dresden, DE; Bundesanstalt für Wasserbau (BAW), Karlsruhe, DE |
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0016-3651 |
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Einsatz alkalischer Substanzen zur Verbesserung der Wasserqualität in Bergbaukippen. Use of alcine substances for the improvement of water quality in mining areas; 27888, BERG , 03.03.03; Words: 569; 200301 05520; 8 Seiten, 3 Bilder, 34 Quellen 3UXX *Belastung von Wasser, Wasserreinhaltung, Abwasser* 3MZ *Bergbau, Tunnelbau, Erdöl /Erdgasförderung, Bohrtechnik* 3BX *chemische Grundlagen* 3PH *Trennen fest/flüssig/gasförm. Stoffe, dispers. Stoffsysteme*; BERG, Copyright FIZ Technik e.V.; DE Deutsch |
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CBU @ c.wolke @ 17587 |
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379 |
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Author |
Gemmell, R.P. |
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Title |
The reclamation of acidic colliery spoil .2. The use of lime wastes |
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Year |
1981 |
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Journal of Applied Ecology |
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18 |
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3 |
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879-887 |
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mine water treatment |
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The reclamation of acidic colliery spoil .2. The use of lime wastes; Wos:A1981mx25300019; Times Cited: 3; ISI Web of Science |
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CBU @ c.wolke @ 9196 |
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97 |
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Kuyucak, N. |
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Conventional and new methods for treating acid mine drainage |
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1995 |
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Cami'95 – Computer Applications in the Mineral Industry |
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863-872 |
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mine water treatment |
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Conventional and new methods for treating acid mine drainage; Isip:A1995bg01c00099; Times Cited: 0; ISI Web of Science |
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CBU @ c.wolke @ 8880 |
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144 |
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Author |
Burgess, J.E.; Stuetz, R.M. |
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Title |
Activated Sludge for the Treatment of Sulphur-rich Wastewaters |
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Journal Article |
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2002 |
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Miner. Eng. |
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15 |
Issue |
11 |
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839-846 |
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acid rock drainage biooxidation biotechnology environmental waste processing acid-mine drainage sulfate-reducing bacteria biological treatment waste-water metals acclimation remediation oxidation reduction removal |
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The aim of this investigation was to assess the potential of activated sludge for the remediation of sulphur-rich wastewaters. A pilot-scale activated sludge plant was acclimatised to a low load of sulphide and operated as a flow-through unit. Additional sludge samples from different full-scale plants were compared with the acclimatised and unacclimatised sludges using batch absorption tests. The effects of sludge source and acclimatisation on the ability of the sludge to biodegrade high loads of sulphide were evaluated. Acclimatisation to low-sulphide concentrations enabled the sludge to degrade subsequent high loads which were toxic to unacclimatised sludge. Acclimatisation was seen to be an effect of selection pressure on the biomass, suggesting that the treatment capability of activated sludge will develop after acclimation, indicating potential for treatment of acid mine drainage (AMD) by a standard wastewater treatment process. Existing options for biological treatment of AMD are described and the potential of activated sludge treatment for AMD discussed in comparison with existing technologies. (C) 2002 Elsevier Science Ltd. |
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0892-6875 |
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Nov.; Activated Sludge for the Treatment of Sulphur-rich Wastewaters; Isi:000179970500009; file:///C:/Dokumente%20und%20Einstellungen/Stefan/Eigene%20Dateien/Artikel/10093.pdf; AMD ISI | Wolkersdorfer |
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CBU @ c.wolke @ 10093 |
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40 |
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