Records |
Author |
Tabak, H.H.; Govind, R. |
Title |
Advances in biotreatment of acid mine drainage and biorecovery of metals 19th annual international conference on Soils, sediments, and water; abstracts |
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Book Chapter |
Year |
2004 |
Publication |
Soil & Sediment Contamination |
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Pages |
171-172 |
Keywords |
acid mine drainage; acid rock drainage; acidification; bacteria; biodegradation; bioreactors; bioremediation; decontamination; effluents; geomembranes; heavy metals; pollutants; pollution; remediation; sulfate reducing bacteria; sulfates; sulfides; Thiobacillus; waste water 22, Environmental geology |
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13 |
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Advances in biotreatment of acid mine drainage and biorecovery of metals 19th annual international conference on Soils, sediments, and water; abstracts; GeoRef; English; 2006-064109; 19th annual international conference on Soils, sediments, and water, Amherst, MA, United States, Oct. 20-23, 2003 |
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CBU @ c.wolke @ 5471 |
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13 |
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Wildeman, T.R.; Bednar, A.J.; Gusek, J.J.; Pinto, A. |
Title |
A review of the passive treatment of arsenic Hardrock mining 2002; issues shaping the industry |
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Book Chapter |
Year |
2002 |
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acid mine drainage; arsenic; case studies; chemical properties; drainage; experimental studies; laboratory studies; metals; mines; Nevada; passive treatment; pollution; tailings; toxic materials; United States; waste water 22, Environmental geology |
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A review of the passive treatment of arsenic Hardrock mining 2002; issues shaping the industry; GeoRef; English; 2007-046184; Hardrock mining 2002; issues shaping the industry, Westminster, CO, United States, May 7-9, 2002 U. S. Environmental Protection Agency, Office of Research and Development, Washington, DC, United States |
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CBU @ c.wolke @ 5627 |
Serial |
210 |
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Author |
Arango, I. |
Title |
Evaluation of the beneficial effects of the acidophilic alga Euglena mutabilis on acid mine drainage systems |
Type ![sorted by Type field, ascending order (up)](img/sort_asc.gif) |
Book Whole |
Year |
2002 |
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acid mine drainage atmospheric precipitation benthic taxa bioremediation dissolved materials dissolved oxygen electron microscopy data Euglena mutabilis Green Valley Mine ICP mass spectra Indiana iron mass spectra metals microorganisms mines oxygen pH photochemistry photosynthesis pollution rain remediation sediments soils spectra temperature United States Vigo County Indiana water 22, Environmental geology |
Abstract |
Euglena mutabilis is an acidophilic, photosynthetic protozoan that forms benthic mats in acid mine drainage (AMD) channels. At the Green Valley mine, western Indiana, E. mutabilis resides in AMD measuring <4.2 pH, with high concentrations of dissolved constituents (up to 22.67 g/l). One of the main factors influencing E. mutabilis distribution is water temperature. The microbe forms thick (>1 mm), extensive mats during spring and fall, when water temperature is between 13 and 28 degrees C. During winter and summer, when temperatures are outside this range, benthic communities have a very patchy distribution and are restricted to areas protected from extreme temperature changes. E. mutabilis also responds to rapid increases in pH, which are associated with rainfall events. During these events pH can increase above 4.0, causing precipitation of Fe and Al oxy-hydroxides that cover the mats. The microbe responds by moving through the precipitates, due to phototaxis, and reestablishing the community at the sediment-water interface within 12 hours. The biological activities of E. mutabilis may have a beneficial effect on AMD systems by removing iron from effluent via oxygenic photosynthesis, and/or by internal sequestration. Photosynthesis by E. mutabilis contributes elevated concentrations of dissolved oxygen (DO), up to 17.25 mg/l in the field and up to 11.83 mg/l in the laboratory, driving oxidation and precipitation of reduced metal species, especially Fe (II), which are dissolved in the effluent. In addition, preliminary electro-microscopic and staining analyses of the reddish intracellular granules in E. mutabilis indicate that the granules contain iron, suggesting that E. mutabilis sequesters iron from AMD. Inductive coupled plasma analysis of iron concentration in AMD with and without E. mutabilis also shows that E. mutabilis accelerates the rate of Fe removal from the media. Whether iron removal is accelerated by internal sequestration of iron and/or by precipitation via oxygenic photosynthesis has yet to be determined. These biological activities may play an important role in the natural remediation of AMD systems. |
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Ph.D. thesis |
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Indiana State University, |
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Terre Haute |
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Evaluation of the beneficial effects of the acidophilic alga Euglena mutabilis on acid mine drainage systems; GeoRef; English; References: 39; illus. incl. 3 tables |
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no |
Call Number |
CBU @ c.wolke @ 16491 |
Serial |
476 |
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Author |
Hill, R.D. |
Title |
Overview of use of carbonate rocks for controlling acid mine drainage |
Type ![sorted by Type field, ascending order (up)](img/sort_asc.gif) |
Journal Article |
Year |
1974 |
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acid mine drainage; carbonate rocks; environmental geology; ground water; lime; limestone; pollution; regional; sedimentary rocks; source; treatment; United States; water 22, Environmental geology |
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Overview of use of carbonate rocks for controlling acid mine drainage; 1976-017404; illus. United States (USA); GeoRef; English |
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CBU @ c.wolke @ 6841 |
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351 |
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Author |
Gong, Z.; Huang, J.; Jiang, H. |
Title |
Study of comprehensive retrieval utilization and the treatment of acid mine wastewater |
Type ![sorted by Type field, ascending order (up)](img/sort_asc.gif) |
Journal Article |
Year |
1996 |
Publication |
Zhongnan Gongye Daxue Xuebao = Journal of Central South University of Technology |
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27 |
Issue |
4 |
Pages |
432-435 |
Keywords |
acid mine drainage Asia China copper Far East heavy metals metals pH pollution sulfides utilization waste water water 22, Environmental geology |
Abstract |
Impact of precipitating on removing harmful metal ion in the acid mine wastewater with pH neutralizer and sulfide was studied. The possible way of retrieving heavy metal ion in wastewater was probed. The techniques for lime carbonate to reject iron for hydrogen sulfide to precipitate copper and for zinc-lime cream neutralization flocculation to treat, mine acid wastewater were chosen. The final water quality may reach national effluent standard; the copper content was 32% in the sulfide slag. |
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1005-9792 |
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Study of comprehensive retrieval utilization and the treatment of acid mine wastewater; 1998-066886; References: 4; 4 tables China (CHN); GeoRef; Chinese |
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CBU @ c.wolke @ 16650 |
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370 |
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