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| Author |
Diamond, J.M.; Bower, W.; Gruber, D. |
| Title |
Use of man-made impoundment in mitigating acid mine drainage in the North Branch Potomac River |
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Journal Article |
| Year |
1993 |
Publication |
Environ. Manage. |
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17 |
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14 |
| Keywords |
Acid mine drainage Potomac River Reservoir macroinvertebrate Fish Mayflies |
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The US Department of the Army, Baltimore District Corps of Engineers, oversees a long-term monitoring study to assess and evaluate effects of the Jennings-Randolph reservoir on biota in the North Branch Potomac River. The reservoir was intended, in part, to mitigate effects of acid mine drainage originating in upstream and headwater areas. The present study assessed recovery of benthos and fish in this system, six years after completion of the reservoir. Higher pH and lower iron and sulfate concentrations were observed upstream of the reservoir compared to preimpoundment conditions, suggesting better overall water quality in the upper North Branch. Water quality improved slightly directly downstream of the reservoir. However, the reservoir itself was poorly colonized by macrophytes and benthic organisms, and plankton composition suggested either metal toxicity and/or nutrient limitation. One large tributary to the North Branch and the reservoir (Stony River) was shown to have high (and possibly toxic) levels of manganese, iron, zinc, and aluminum due to subsurface coal mine drainage. Macroinvertebrate diversity and number of taxa were higher in sites downstream of the reservoir in the present study. Compared with previous years, the present study suggested relatively rapid recovery in the lower North Branch due to colonization from two major unimpacted tributaries in this system: Savage River and South Branch Potomac. Abundance of certain mayfly species across sites provided the most clear evidence of longitudinal gradients in water quality parameters and geomorphology. Fish data were consistent with macroinvertebrate results, but site-to-site variation in species composition was greater. Data collected between 1982 and 1987 suggested that certain fish species have unsuccessfully attempted to colonize sites directly downstream of the reservoir despite the more neutral pH water there. Our results show that recovery of biota in the North Branch Potomac was attributed to decreased acid inputs from mining operations and dilution from the Savage River, which contributed better water quality. Continued improvement of North Branch Potomac biota may not be expected unless additional mitigation attempts, either within the reservoir or upstream, are undertaken. |
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0364-152x |
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Feb.; Use of man-made impoundment in mitigating acid mine drainage in the North Branch Potomac River; New York, NY ; Heidelberg ; Berlin : Springer; file:///C:/Dokumente%20und%20Einstellungen/Stefan/Eigene%20Dateien/Artikel/7016.pdf; Opac |
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CBU @ c.wolke @ 7016 |
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79 |
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| Author |
Kothe, E. |
| Title |
Molecular mechanisms in bio-geo-interaactions: From a case study to general mechanisms |
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Journal Article |
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2005 |
Publication |
Chemie Der Erde-Geochemistry |
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65 |
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7-27 |
| Keywords |
mine water treatment |
| Abstract |
The understanding of molecular mechanisms in the cycling of elements in general is essential to our alteration of current processes. One field where such geochemical element cycles are of major importance is the prevention and treatment of acid mine drainage waters (AMD) which are prone to occur in every anthropogenic, modified landscape where sulfidic rock material has been brought to the surface during mine operations. Microbiologically controlled production of AMD leads not only to acidification, but at the same time the dissolution of heavy metals makes them bioavailable posing a potential ecotoxicological risk. The water path then can contaminate surface and ground water resources which leads to even bigger problems in large catchment areas. The investigation of mechanisms in natural attenuation has already provided first ideas for applications of naturally occurring bioremediation schemes. Especially an improved soil microflora can enhance the natural attenuation when adapted microbes are applied to contaminated areas. Future schemes for plant extraction, control of water efflux by increasing evapotranspiration, and by subsequent land use with agricultural plants with biostabilization and phytosequestration potential will provide putative control measures. The mechanisms in parts of these processes have been evaluated and the resulting synthesis applied to derive a bioremediation plan using the former uranium mine in Eastern Thuringia as a case study. (c) 2005 Elsevier GrnbH. All rights reserved. |
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Molecular mechanisms in bio-geo-interaactions: From a case study to general mechanisms; Wos:000233975000002; Times Cited: 0; ISI Web of Science |
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CBU @ c.wolke @ 16965 |
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114 |
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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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Journal Article |
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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 |
| Keywords |
mine water treatment |
| Abstract |
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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| Author |
Banks, S.B.; Banks, D. |
| Title |
Abandoned mines drainage; impact assessment and mitigation of discharges from coal mines in the UK |
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Book Chapter |
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2001 |
Publication |
Geoenvironmental engineering Engineering Geology |
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31-37 |
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abandoned mines coal mines cost discharge drainage England environmental effects Europe feasibility studies Great Britain mine drainage mines mitigation pollution remediation Scotland United Kingdom Western Europe 22, Environmental geology |
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The UK has a legacy of pollution caused by discharges from abandoned coal mines, with the potential for further pollution by new discharges as groundwaters continue to rebound to their natural levels. In 1995, the Coal Authority initiated a scoping study of 30 gravity discharges from abandoned coal mines in England and Scotland. Mining information, geological information and water quality data were collated and interpreted in order to allow a preliminary assessment of the source and nature of each of the discharges. An assessment of the potential for remediation was made on the basis of the feasibility and relative costs of alternative remediation measures. Environmental impacts of the discharges and of the proposed remediation schemes were also assessed. The results, together with previous Coal Authority studies of discharges in Wales, were used by the Coal Authority, in collaboration with the former National Rivers Authority and the former Forth and Clyde River Purification Boards, to rank discharge sites in order of priority for remediation. |
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60 |
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Yong, R.N.; Thomas, H.R. |
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Abandoned mines drainage; impact assessment and mitigation of discharges from coal mines in the UK; GeoRef; English; 2001-052748; British Geotechnical Society, second conference on Geoenvironmental engineering, London, United Kingdom, Sept. 1999 References: 12; illus. incl. 2 tables |
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CBU @ c.wolke @ 16515 |
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31 |
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| Author |
McKenzie, R. |
| Title |
Software Update to Better Predict Costs of Treating Mine Drainage |
Type |
Journal Article |
| Year |
2005 |
Publication |
Mine Water Env. |
Abbreviated Journal |
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| Volume |
24 |
Issue |
4 |
Pages |
213-215 |
| Keywords |
AMD prediction software |
| Abstract |
The U.S. Office of Surface Mining (OSM) is updating a popular software program that helps government agencies and mine water practioners predict what it will cost to treat acid mine drainage (AMD). Developers expect to release the update, AMDTreat Version 4.0, before the end of 2005. The new version will offer additional tools, expanded features, and a better user interface. |
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1025-9112 |
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Software Update to Better Predict Costs of Treating Mine Drainage; 1; Fg; AMD ISI | Wolkersdorfer |
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CBU @ c.wolke @ 17389 |
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303 |
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