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Simmons, J.A.; Andrew, T.; Arnold, A.; Bee, N.; Bennett, J.; Grundman, M.; Johnson, K.; Shepherd, R. |
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Title |
Small-Scale Chemical Changes Caused by In-stream Limestone Sand Additions to Streams |
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Journal Article |
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Year |
2006 |
Publication |
Mine Water Env. |
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Volume |
25 |
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4 |
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241-245 |
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acid mine drainage aluminum calcium limestone sand sediment stream liming West Virginia |
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Abstract |
In-stream limestone sand addition (ILSA) has been employed as the final treatment for acid mine drainage discharges at Swamp Run in central West Virginia for six years. To determine the small-scale longitudinal variation in stream water and sediment chemistry and stream biota, we sampled one to three locations upstream of the ILSA site and six locations downstream. Addition of limestone sand significantly increased calcium and aluminum concentrations in sediment and increased the pH, calcium, and total suspended solids of the stream water. Increases in alkalinity were not significant. The number of benthic macroinvertebrate taxa was significantly reduced but there was no effect on periphyton biomass. Dissolved aluminum concentration in stream water was reduced, apparently by precipitation into the stream sediment. |
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1025-9112 |
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Small-Scale Chemical Changes Caused by In-stream Limestone Sand Additions to Streams; 1; FG 4 Abb., 2 Tab.; AMD ISI | Wolkersdorfer |
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CBU @ c.wolke @ 17420 |
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248 |
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Author |
Edraki, M. |
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Title |
Post closure management of the Mt Leyshon Gold Mine – Water the integrator |
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Journal Article |
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2006 |
Publication |
Water in Mining 2006, Proceedings |
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233-242 |
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mine water treatment |
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Mining at the Mt Leyshon Gold Mine in semi-arid north Queensland stopped in 2002. Newmont Australia has recently initiated a thorough post-closure water management study of the site by revisiting the existing information and conducting new water-related investigations. The focus of this paper. which is the first publication on post-closure environmental management of the site. is an overview of the site water quality in view of the sources and spatial distribution of polluted mine water, and also the performance of cover systems in controlling water flux though mine wastes. |
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Post closure management of the Mt Leyshon Gold Mine – Water the integrator; Isip:000243724400032; Times Cited: 0; ISI Web of Science |
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CBU @ c.wolke @ 16925 |
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150 |
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Totsche, O.; Fyson, A.; Kalin, M.; Steinberg Christian, E.W. |
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Title |
Titration curves: A useful instrument for assessing the buffer systems of acidic mining waters |
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Journal Article |
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2006 |
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ESPR Environmental Science and Pollution Research |
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13 |
Issue |
4 |
Pages |
215-224 |
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Abwasseraufbereitung Bergbau Titration Säuregehalt Grundwasser Pufferlösung Neutralisation Titrationskurve Bergbauabwasser |
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The acidification of mine waters is generally caused by metal sulfide oxidation, related to mining activities. These waters are characterized by low pH and high acidity due to strong buffering systems. The standard acidity parameter, the BNC (Base Neutralization Capacity), is determined by endpoint titration, and reflects a cumulative parameter of both hydrogen ions and all buffering systems, but does not give information on the individual buffer systems. It is demonstrated that a detailed interpretation of titration curves can provide information about the strength of the buffering systems. The buffering systems are of importance for environmental studies and treatment of acidic mining waters. Titrations were carried out by means of an automatic titrator using acidic mining waters from Germany and Canada. The curves were interpreted, compared with each other, to endpoint titration results and to elemental concentrations contained therein. The titration curves were highly reproducible, and contained information about the strength of the buffer systems present. Interpretations are given, and the classification and comparison of acidic mining waters, by the nature and strength of their buffering systems derived from titration curves are discussed. The BNC-values calculated from the curves were more precise than the ones determined by the standard endpoint titration method. Due to the complex buffer mechanisms in acidic mining waters, the calculation of major metal concentrations from the shape of the titration curve resulted in estimates, which should not be confused with precise elemental analysis results. Conclusion. Titration curves provide an inexpensive, valuable and versatile tool, by which to obtain sophisticated information of the acidity in acidic water. The information about the strength of the present buffer systems can help to understand and document the complex nature of acidic mining water buffer systems. Finally, the interpretation of titration curves could help to improve treatment measurements and the ecological understanding of these acidic waters. |
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Leibniz-Institut für Gewässerökologie und Binnenfischerei, Berlin, DE; Boojum Research, Toronto, CA; Humboldt-Universität Berlin, DE |
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0944-1344 |
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Titration curves: A useful instrument for assessing the buffer systems of acidic mining waters; 39481, BERG , 13.11.06; Words: 519; 200610 05282; 10 Seiten, 15 Bilder, 2 Tabellen, 39 Quellen 3UXX *Belastung von Wasser, Wasserreinhaltung, Abwasser* 3BX *chemische Grundlagen* 3IFC *Messung und Prüfung chemischer Größen, chemische Analytik* 3MZ *Bergbau, Tunnelbau, Erdöl /Erdgasförderung, Bohrtechnik*; BERG, Copyright FIZ Technik e.V.; EN Englisch |
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CBU @ c.wolke @ 17580 |
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224 |
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Sierra-Alvarez, R. |
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Biological treatment of heavy metals in acid mine drainage using sulfate reducing bioreactors |
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2006 |
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Water Sci. Technol. |
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54 |
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2 |
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179-185 |
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mine water treatment |
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The uncontrolled release of acid mine drainage (AMD) from abandoned mines and tailing piles threatens water resources in many sites worldwide. AMD introduces elevated concentrations of sulfate ions and dissolved heavy metals as well as high acidity levels to groundwater and receiving surface water. Anaerobic biological processes relying on the activity of sulfate reducing bacteria are being considered for the treatment of AMD and other heavy metal containing effluents. Biogenic sulfides form insoluble complexes with heavy metals resulting in their precipitation. The objective of this study was to investigate the remediation of AMD in sulfate reducing bioreactors inoculated with anaerobic granular sludge and fed V with an influent containing ethanol. Biological treatment of an acidic (pH 4.0) synthetic AMD containing high concentrations of heavy metals (100 Mg Cu2+vertical bar(-1); 10 mg Ni2+vertical bar(-1), 10 mg Zn2+vertical bar(-1)) increased the effluent pH level to 7.0-7.2 and resulted in metal removal efficiencies exceeding 99.2%. The highest metal precipitation Cn rates attained for Cu, Ni and Zn averaged 92.5, 14.6 and 15.8 mg metal l(-1) of reactor d(-1). The results of this work demonstrate that an ethanol-fed sulfidogenic reactor was highly effective to remove heavy metal contamination and neutralized the acidity of the synthetic wastewater. |
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Biological treatment of heavy metals in acid mine drainage using sulfate reducing bioreactors; Wos:000240449300024; Times Cited: 0; ISI Web of Science |
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CBU @ c.wolke @ 16943 |
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106 |
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Curi, A.C.; Granda, W.J.V.; Lima, H.M.; Sousa, W.T. |
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Title |
Zeolites and their application in the decontamination of mine waste water |
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2006 |
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Informacion Tecnologica |
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17 |
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6 |
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111-118 |
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adsorption decontamination effluents industrial waste ion exchange metallurgical industries metallurgy mining mining industry porosity wastewater treatment zeolites zeolites decontamination mine waste water genesis porosity adsorption ionic exchange mineral metallurgical effluents mercury pollution artisan mining activities heavy metals removal metal mining effluents mercury vapors ovens fire amalgams Manufacturing and Production |
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This paper describes the genesis, structure and classification of natural zeolites, including their most relevant properties such as porosity, adsorption and ionic exchange. The use of natural zeolites in the treatment of effluents containing heavy metals is reviewed based on current literature. These uses are focused on mineral-metallurgical effluents and mercury pollution related to artisan mining activities. The study shows that natural zeolites are efficient in removal of heavy metals in metal mining effluents, can be produced and improved at a low cost, and can also be used to adsorb mercury vapors from ovens used to fire amalgams. |
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0716-8756 |
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Zeolites and their application in the decontamination of mine waste water; 9532002; Journal Paper; SilverPlatter; Ovid Technologies |
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CBU @ c.wolke @ 16784 |
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409 |
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