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Rabenhorst, M.C.; James, B.R. |
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Acid mine drainage remediation via sulfidization in wetlands Fiscal year 1992 annual report |
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1993 |
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acid mine drainage; anaerobic environment; Appalachians; concentration; decontamination; ferric iron; iron; manganese; marshes; Maryland; metals; mires; North America; oxidation; pollutants; pollution; pore water; remediation; sulfidization; transport; United States; water quality; water treatment; wetlands 22, Environmental geology |
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University of Maryland, W.R.R.C.C.P.M.D.U.S. |
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Acid mine drainage remediation via sulfidization in wetlands Fiscal year 1992 annual report; 1998-034327; GeoRef; English; illus. incl. 1 table University of Maryland, Water Resources Research Center, College Park, MD, United States |
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CBU @ c.wolke @ 6684 |
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267 |
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Bochkarev, G.R.; Beloborodov, A.V.; Kondrat'ev, S.A.; Pushkareva, G.I. |
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Title |
Intensification of Aeration in treating Natural-Water and Mine Water |
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Journal Article |
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1994 |
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J. Min. Sci. |
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30 |
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6 |
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5 |
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mine water treatment |
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1062-7391 |
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Nov; Intensification of Aeration in treating Natural-Water and Mine Water; New York: Consultants Bureau; file:///C:/Dokumente%20und%20Einstellungen/Stefan/Eigene%20Dateien/Artikel/7033.pdf; Opac |
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CBU @ c.wolke @ 7033 |
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15 |
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Author |
Bechard, G. |
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Title |
Use Of Cellulosic Substrates For The Microbial Treatment Of Acid-Mine Drainage |
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Journal Article |
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1994 |
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Journal of Environmental Quality |
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23 |
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1 |
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111-116 |
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mine water treatment |
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A mixed aerobic-anaerobic microbial treatment process was developed previously for acid mine drainage (AMD) using straw as a substrate. The process was effective only if AMD was supplemented with sucrose. The present study was conducted to determine which, if any, of three cellulosic materials could sustain the microbial treatment of AMD without the addition of a sucrose amendment and to determine the effect of the retention time on the performance of the reactors. The performance of small reactors that treated simulated AMD in the continuous mode was evaluated using alfalfa (Medicago sativa L.) hay, timothy (Phleum pratense L.) hay, and straw with a 5 d retention time. Parameters measured were pH, Fe, Al, sulfate, and ammonium. Timothy hay and straw sustained AMD mitigation for 3 wk, and thereafter all activity ceased. After the reactors ceased treating AMD, the mitigative activities were reinitiated by the addition of sucrose, but not by urea. Alfalfa sustained AMD mitigation for a longer time period than either straw or timothy. The effect of three retention times, 3.5, 7, and 35 d, was then investigated for reactors containing fresh alfalfa. Increasing the retention time resulted in better metal removal and a greater pH increase. With a 7-d retention time, 75 L of simulated AMD were neutralized from a pH of 3.5 to a pH value greater than 6.5. Reactors operating with a 3.5-d retention time treated only 58.3 L of simulated AMD before failing. Ammonium was detected in effluents of active reactors. The results of this study indicate that a low maintenance microbial treatment system can be developed with alfalfa as a substrate without the addition of a sucrose amendment. |
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Use Of Cellulosic Substrates For The Microbial Treatment Of Acid-Mine Drainage; Wos:A1994mu33000017; Times Cited: 22; ISI Web of Science |
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CBU @ c.wolke @ 17194 |
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89 |
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Author |
Bhole, A.G. |
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Title |
Acid-Mine Drainage And Its Treatment |
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Journal Article |
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Year |
1994 |
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Impact of Mining on the Environment |
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131-141 |
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mine water treatment |
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Acid-Mine Drainage And Its Treatment; Isip:A1994ba02k00015; Times Cited: 0; ISI Web of Science |
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CBU @ c.wolke @ 8945 |
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146 |
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Swoboda-Colberg, N.; Colberg, P.; Smith, J.L. |
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Title |
Constructed vertical flow aerated wetlands |
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1994 |
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acid mine drainage; aeration; Butte Montana; carbonate rocks; case studies; clastic sediments; Clear Creek County Colorado; Colorado; construction; controls; fluid dynamics; gravel; heavy metals; Idaho Springs Colorado; limestone; Montana; pollution; rates; sedimentary rocks; sediments; Silver Bow County Montana; substrates; tailings; United States; waste water; water; water management; water quality; water treatment; wetlands 22, Environmental geology |
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In the report, wetland technology is described in which the main reactive layer is limestone gravel (rather than organic material) which is overlain by a fine gravel filter and soil. The three-year project included laboratory and field studies. Vertical aerated wetlands, simulated by columns, constructed in the field and in the laboratory, were operated during the project. The report presents a summary of results given in previous reports and summaries of results obtained using water from Butte, MT, and field studies at the Rockford Tunnel, near Idaho Springs, CO. |
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University of Wyoming, L.W.Y.U.S. performer |
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Constructed vertical flow aerated wetlands; 1998-003373; GeoRef; English; Final report. Grant DI-196561 National Technical Information Service, (703)605-6000, order number PB96-196811NEG, Springfield, VA, United States |
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CBU @ c.wolke @ 6506 |
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226 |
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