| Records |
| Author |
Van Hille, R.P.; Boshoff, G.A.; Rose, P.D.; Duncan, J.R. |
| Title |
A continuous process for the biological treatment of heavy metal contaminated acid mine water |
Type |
Journal Article |
| Year |
1999 |
Publication  |
Resour. Conserv. Recycl. |
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| Volume |
27 |
Issue |
1-2 |
Pages |
157-167 |
| Keywords |
mine water treatment biological treatment heavy metal acid mine water alkaline precipitation green-algae chlorella |
| Abstract |
Alkaline precipitation of heavy metals from acidic water streams is a popular and long standing treatment process. While this process is efficient it requires the continuous addition of an alkaline material, such as lime. In the long term or when treating large volumes of effluent this process becomes expensive, with costs in the mining sector routinely exceeding millions of rands annually. The process described below utilises alkalinity generated by the alga Spirulina sp., in a continuous system to precipitate heavy metals. The design of the system separates the algal component from the metal containing stream to overcome metal toxicity. The primary treatment process consistently removed over 99% of the iron (98.9 mg/l) and between 80 and 95% of the zinc (7.16 mg/l) and lead (2.35 mg/l) over a 14-day period (20 l effluent treated). In addition the pH of the raw effluent was increased from 1.8 to over 7 in the post-treatment stream. Secondary treatment and polishing steps depend on the nature of the effluent treated. In the case of the high sulphate effluent the treated stream was passed into an anaerobic digester at a rate of 4 l/day. The combination of the primary and secondary treatments effected a removal of over 95% of all metals tested for as well as a 90% reduction in the sulphate load. The running cost of such a process would be low as the salinity and nutrient requirements for the algal culture could be provided by using tannery effluent or a combination of saline water and sewage. This would have the additional benefit of treating either a tannery or sewage effluent as part of an integrated process. |
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0921-3449 |
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Jul; A continuous process for the biological treatment of heavy metal contaminated acid mine water; Isi:000081142100017; file:///C:/Dokumente%20und%20Einstellungen/Stefan/Eigene%20Dateien/Artikel/9937.pdf; AMD ISI | Wolkersdorfer |
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CBU @ c.wolke @ 9937 |
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26 |
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Amacher, M.C.; Brown, R.W.; Kotuby-Amacher, J.; Willis, A. |
| Title |
Adding sodium hydroxide to study metal removal in a stream affected by acid mine drainage |
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Journal Article |
| Year |
1993 |
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Research Paper, US Department of Agriculture, Forest Service |
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465 |
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17 |
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pH stream mine drainage remediation zinc copper sodium hydroxide USa Montana Beartooth Mountains Fisher Creek 3 Geology |
| Abstract |
Fisher Creek, a stream affected by acid mine drainage in the Beartooth Mountains of Montana, was studied to determine the extent to which copper (Cu) and zinc (Zn) would be removed from stream water when pH was increased by a pulse of sodium hydroxide (NaOH). Although the pH adjustment study indicated that precipitated Fe(OH) “SUB 3” (am) could rapidly remove Cu and Zn from a stream affected by acid mine drainage, the pH should be maintained in an optimal range (7 to 8.5) to maximize removal by adsorption. -from Authors |
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Adding sodium hydroxide to study metal removal in a stream affected by acid mine drainage; (1022908); 94k-02459; Using Smart Source Parsing INT- pp; Geobase |
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no |
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CBU @ c.wolke @ 17566 |
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484 |
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Aljoe, W.W.; Hawkins, J.W. |
| Title |
Neutralization of acidic discharges from abandoned underground coal mines by alkaline injection |
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Journal Article |
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1993 |
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Report of investigations |
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37 |
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Neutralization of acidic discharges from abandoned underground coal mines by alkaline injection; Washington, D.C. : U.S. Dept. of the Interior, Bureau of Mines; Opac |
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CBU @ c.wolke @ 6974 |
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486 |
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Ackman, T.E.; Kleinmann, R.L.P. |
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In-line aeration and treatment of acid mine drainage |
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Journal Article |
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1984 |
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Report of investigations |
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8868 |
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16 |
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In-line aeration and treatment of acid mine drainage; U.S. Dept. of the Interior, Bureau of Mines; Washington, DC; Opac |
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CBU @ c.wolke @ 6963 |
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493 |
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| Author |
Boonstra, J.; van Lier, R.; Janssen, G.; Dijkman, H.; Buisman, C.J.N. |
| Title |
Biological treatment of acid mine drainage |
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Book Chapter |
| Year |
1999 |
Publication |
Process Metallurgy, vol.9, Part B |
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559-567 |
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acid mine drainage adsorption alkaline earth metals arsenic Bingham Canyon Mine bioremediation Budelco Zinc Refinery cadmium copper Cornwall England England Europe Great Britain heavy metals iron magnesium manganese metals Netherlands pH phase equilibria pollution remediation sulfate ion United Kingdom United States Utah Western Europe Wheal Jane Mine zinc 22, Environmental geology |
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Amils, R.; Ballester, A. |
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Biohydrometallurgy and the environment toward the mining of the 21st century; proceedings of the International biohydrometallurgy symposium IBS'99, Part B, Molecular biology, biosorption, bioremediation |
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0444501932 |
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Biological treatment of acid mine drainage; GeoRef; English; 2000-049809; International biohydrometallurgy symposium IBS'99, Madrid, Spain, June 20-23, 1999 References: 11; illus. incl. 5 tables |
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no |
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CBU @ c.wolke @ 16595 |
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442 |
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