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Author Banks, S.B.; Banks, D. url  openurl
  Title Abandoned mines drainage; impact assessment and mitigation of discharges from coal mines in the UK Type Book Chapter
  Year 2001 Publication Geoenvironmental engineering Engineering Geology Abbreviated Journal  
  Volume Issue Pages (down) 31-37  
  Keywords 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  
  Abstract 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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  Publisher Place of Publication 60 Editor Yong, R.N.; Thomas, H.R.  
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  Notes 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 Approved no  
  Call Number CBU @ c.wolke @ 16515 Serial 31  
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Author Carlson, L.; Kumpulainen, S. openurl 
  Title Retention of harmful elements by ochreous precipitates of iron Type Journal Article
  Year 2001 Publication Tutkimusraportti Geologian Tutkimuskeskus Abbreviated Journal  
  Volume - Issue 154 Pages (down) 30-33  
  Keywords Surface water quality Pollution and waste management non radioactive geographical abstracts: physical geography hydrology (71 6 9) geological abstracts: environmental geology (72 14 2) iron oxide precipitation chemistry sulfate arsenate heavy metal pH water pollution remediation  
  Abstract The capability of soil fines to fix harmful elements, e.g. heavy metals and arsenic, depends on specific surface area and other characteristics, such as surface charge. In the pH-range typical of natural waters (pH 5,5-7,5), the surfaces of fine-grained silicate particles and manganese oxides are negatively charged; consequently cations, such as heavy metals, fix effectively to them. The iron oxide surfaces are usually positively charged and typically fix anions, such as sulphate and arsenate. Retention of anions is especially extensive to precipitates formed from acid mine drainage (pH 2,5-5,0). For example, precipitates found at Paroistenjarvi mine, Finland, contain more than 70 g/kg of arsenic (dry matter). Adsorbed anions, e.g. sulphate, enhance the capacity of precipitate to fix heavy metal cations in low-pH environments.  
  Address L. Carlson, Tehtaankatu 25 A 4, Helsinki FIN-00150, Finland liisa.carlson@kolumbus.fi  
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  ISSN 0781-4240 ISBN Medium  
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  Notes Retention of harmful elements by ochreous precipitates of iron; 2392974; Oksidiset rautasaostumat haitallisten aineiden pidattajina. Finland 7; Geobase Approved no  
  Call Number CBU @ c.wolke @ 17533 Serial 421  
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Author Fernandez Rubio, R. openurl 
  Title Un recurso valioso las aguas de mina. A valuable resource, mine waters Type Journal Article
  Year 2001 Publication Industria y Mineria Abbreviated Journal  
  Volume 345 Issue Pages (down) 14-22  
  Keywords acid mine drainage; Africa; aquifers; case studies; East Africa; Europe; ground water; hydrogeochemical exploration; hydrogeological survey; Iberian Peninsula; injection; mining; mining geology; open-pit mining; pollution; Portugal; Southern Europe; surface mining; surface water; underground mining; water supply; water treatment; Zambia 21, Hydrogeology  
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  ISSN 1137-8042 ISBN Medium  
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  Notes Un recurso valioso las aguas de mina. A valuable resource, mine waters; 374358-2; illus. Spain (ESP); GeoRef In Process; Spanish Approved no  
  Call Number CBU @ c.wolke @ 5784 Serial 381  
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Author Schoeman, J.J.; Steyn, A. url  openurl
  Title Investigation into alternative water treatment technologies for the treatment of underground mine water discharged by Grootvlei Proprietary Mines Ltd into the Blesbokspruit in South Africa Type Journal Article
  Year 2001 Publication Desalination Abbreviated Journal  
  Volume 133 Issue 1 Pages (down) 13-30  
  Keywords underground mine water treatment technologies reverse osmosis electrodialysis reversal ion-exchange water quality brine disposal treatment costs  
  Abstract Grootvlei Proprietary Mines Ltd is discharging between 80 and 100 Ml/d underground water into the Blesbokspruit. This water is pumped out of the mine to keep the underground water at such a level as to make mining possible. The water is of poor quality because it contains high TDS levels (2700-3800 mg/l) including high concentrations of iron, manganese, sulphate, calcium, magnesium, sodium and chloride. This water will adversely affect the water ecology in the Blesbokspruit, and it will significantly increase the TDS concentration of one of the major water resources if not treated prior to disposal into the stream. Therefore, alternative water desalination technologies were evaluated to estimate performance and the economics of the processes for treatment of the mine water. It was predicted that water of potable quality should be produced from the mine water with spiral reverse osmosis (SRO). It was demonstrated that it should be possible to reduce the TDS of the mine water (2000-2700-3400-4500 mg/l) to potable standards with SRO (85% water recovery). The capital costs (pretreatment and desalination) for a 80 Ml/d plant (worst-case water) were estimated at US$35M. Total operating costs were estimated at 88.1c/kl. Brine disposal costs were estimated at US$18M. Therefore, the total capital costs are estimated at US$53M. It was predicted that it should be possible to produce potable water from the worst-case feed water (80 Ml/d) with the EDR process. It was demonstrated that the TDS in the feed could be reduced from 4178 to 246 mg/l in the EDR product (65% water recovery). The capital costs (pretreatment plus desalination) to desalinate the worst-case feed water to potable quality with EDR is estimated at US$53.3M. The operational costs are estimated at 47.6 c/kl. Brine disposal costs were estimated at US$42M. Therefore, the total capital costs are estimated at US$95.3 M. It was predicted that it should be possible to produce potable water from the mine water with the GYP-CIX ion- exchange process. It was demonstrated that the feed TDS (2000- 4500 mg/l) could be reduced to less than 240 mg/l (54% water recovery for the worst-case water). The capital cost for an 80 Ml/d ion-exchange plant (worst-case water) was estimated at US$26.7M (no pretreatment). Operational costs were estimated at 60.4 c/kl. Brine disposal costs were estimated at US$55.1M. Therefore, the total desalination costs were estimated at US$81.8M. The capital outlay for a SRO plant will be significantly less than that for either an EDR or a GYP-CIX plant. The operating costs, however, of the RO plant are significantly higher than for the other two processes. Potable water sales, however, will bring more in for the RO process than for the other two processes because a higher water recovery can be obtained with RO. The operating costs minus the savings in water sales were estimated at 17.2; 6.7 and US$8.6M/y for the RO, EDR and GYP-CIX processes, respectively (worst case). Therefore, the operational costs of the EDR and GYP-CIX processes are the lowest if the sale of water is taken into consideration. This may favour the EDR and GYP-CIX processes for the desalination of the mine water.  
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  ISSN 0011-9164 ISBN Medium  
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  Notes Feb. 10; Investigation into alternative water treatment technologies for the treatment of underground mine water discharged by Grootvlei Proprietary Mines Ltd into the Blesbokspruit in South Africa; Isi:000167087500002; file:///C:/Dokumente%20und%20Einstellungen/Stefan/Eigene%20Dateien/Artikel/10184.pdf; AMD ISI | Wolkersdorfer Approved no  
  Call Number CBU @ c.wolke @ 17480 Serial 23  
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Author Kuyucak, N. openurl 
  Title Acid mining drainage prevention and control Type Journal Article
  Year 2001 Publication Mining Environmental Management Abbreviated Journal  
  Volume 9 Issue 1 Pages (down) 12-15  
  Keywords acid mine drainage; bacteria; biodegradation; chemical properties; controls; disposal barriers; dissolved materials; geomembranes; heavy metals; hydrolysis; leaching; migration of elements; moisture; oxidation; permeability; pollution; ponds; preventive measures; reclamation; retention; risk assessment; sulfate ion; sulfides; synthetic materials; tailings; toxic materials; underground installations; underground storage; waste disposal; waste management; water pollution; water treatment 22, Environmental geology  
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  ISSN 0969-4218 ISBN Medium  
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  Notes Acid mining drainage prevention and control; 2001-050583; References: 21; illus. incl. 1 table United Kingdom (GBR); GeoRef; English Approved no  
  Call Number CBU @ c.wolke @ 5741 Serial 323  
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