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Barton, C.D.; Karathanasis, A.D. |
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Title |
Aerobic and anaerobic metal attenuation processes in a constructed wetland treating acid mine drainage |
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Journal Article |
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Year |
1998 |
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Environ Geosci |
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5 |
Issue |
2 |
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43-56 |
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Keywords |
acid mine drainage aerobic environment anaerobic environment attenuation chemical fractionation chemical properties concentration constructed wetlands controls degradation detection environmental analysis ferric iron goethite heavy metals iron jarosite Kentucky McCreary County Kentucky metals oxides pollutants pollution seepage soils solubility sulfates surface water United States water treatment wetlands X-ray diffraction data 22, Environmental geology |
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1075-9565 |
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Aerobic and anaerobic metal attenuation processes in a constructed wetland treating acid mine drainage; 2001-034195; References: 41; illus. incl. 1 table United States (USA); GeoRef; English |
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CBU @ c.wolke @ 16623 |
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61 |
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Gale, J.E.; MacLeod, R.; Bursey, G. |
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The role of hydrogeology in developing effective mine water control programs in fractured porous rocks Resources development and Earth science; environmental and economic issues (Abstract) |
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Book Chapter |
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1999 |
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Atlantic Geology |
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172 |
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anisotropy; bedrock; controls; fractured materials; fractures; geometry; ground water; heterogeneity; mine dewatering; mines; mining; mining geology; numerical models; permeability; porous materials; remediation; three-dimensional models; underground mining; velocity 21, Hydrogeology |
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35 |
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Pickerill, R.K.; Barr, S.M.; Williams, G.L. |
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The role of hydrogeology in developing effective mine water control programs in fractured porous rocks Resources development and Earth science; environmental and economic issues (Abstract); GeoRef; English; 2000-073328; Geological Association of Canada, 1999 annual technical meeting, Newfoundland Section, Saint Johns, NL, Canada, Feb. 22-23, 1999 |
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CBU @ c.wolke @ 5958 |
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69 |
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Author |
Barton, C.D.; Karathanasis, A.D. |
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Title |
Aerobic and anaerobic metal attenuation processes in a constructed wetland treating acid mine drainage |
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Book Chapter |
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Year |
1997 |
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AAPG Eastern Section and the Society for Organic Petrology joint meeting; abstracts |
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1545 |
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acid mine drainage aerobic environment air-water interface anaerobic environment attenuation buffers constructed wetlands controls diffusion iron manganese metals mineral composition pollution precipitation processes SEM data solubility solution sulfate ion sulfur wetlands X-ray diffraction data 22, Environmental geology |
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Abstract |
The use of constructed wetlands for acid mine drainage amelioration has become a popular alternative to conventional treatment methods, however, the metal attenuation processes of these systems are poorly understood. Precipitates from biotic and abiotic zones of a staged constructed wetland treating high metal load (approx. equal to 1000 mg L (super -1) ) and low pH (approx. 3.0) acid mine drainage were characterized by chemical dissolution, x-ray diffraction, thermal analysis and scanning electron microscopy. Characterization of abiotic/aerobic zones within the treatment system suggest the presence of crystalline iron oxides and hydroxides such as hematite, lepidocrocite, goethite, and jarosite. At the air/water interface of initial abiotic treatment zones, SO (sub 4) /Fe ratios were low enough (<2.0) for the formation of jarosite and goethite, but as the ratio increased due to treatment and subsequent reductions in iron concentration, jarosite was transformed to other Fe-oxyhydroxysulfates and goethite formation was inhibited. In addition, elevated pH conditions occurring in the later stages of treatment promoted the formation of amorphous iron oxyhydroxides. Biotic wetland cell substrate characterizations suggest the presence of amorphous iron minerals such as ferrihydrite and Fe(OH) (sub 3) . Apparently, high Fe (super 3+) activity, low Eh and low oxygen diffusion rates in the anaerobic subsurface environment inhibit the kinetics of crystalline iron precipitation. Some goethite, lepidocrocite and hematite, however, were observed near the surface in biotic areas and are most likely attributable to increased oxygen levels from surface aeration and/or oxygen transport by plant roots. Alkalinity generation from limestone dissolution within the substrate and bacterially mediated sulfate reduction also has a significant role on the mineral retention process. The formation of gypsum, rhodochrocite and siderite are by-products of alkalinity generating reactions in this system and may have an impact on S, Mn, and Fe solubility controls. Moreover, the buffering of acidity through excess alkalinity appears to facilitate the precipitation and retention of metals within the system. |
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AAPG Bulletin |
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Aerobic and anaerobic metal attenuation processes in a constructed wetland treating acid mine drainage; GeoRef; English; 1997-067790; AAPG Eastern Section and the Society for Organic Petrology joint meeting, Lexington, KY, United States, Sep. 27-30, 1997 |
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CBU @ c.wolke @ 16630 |
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70 |
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Ziemkiewicz, P.F.; Skousen, J.G.; Brant, D.L.; Sterner, P.L.; Lovett, R.J.; Skousen, J.G.; Ziemkiewicz, P.F. |
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Acid mine drainage treatment with armored limestone in open limestone channels |
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Book Chapter |
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1996 |
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Acid mine drainage control and treatment |
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abandoned mines; acid mine drainage; acidification; carbonate rocks; case studies; chemical reactions; coal mines; controls; decontamination; effluents; environmental management; experimental studies; ground water; heavy metals; hydrology; limestone; mines; Pennsylvania; pollution; reclamation; sedimentary rocks; soils; surface water; United States; water treatment; watersheds; West Virginia 22, Environmental geology |
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West Virginia University and the National Mine Land Reclamation Center |
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Morgantown |
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Acid mine drainage treatment with armored limestone in open limestone channels; GeoRef; English; 2004-051155; Edition: 2 References: 14; illus. incl. 6 tables |
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Call Number |
CBU @ c.wolke @ 6365 |
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189 |
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Wilmoth, R.C.; Mason, D.G.; Gupta, M. |
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Title |
Treatment of ferrous iron acid mine drainage by reverse osmosis |
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Journal Article |
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Year |
1972 |
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acid mine drainage; coal; controls; environmental geology; Environmental Protection Agency; experimental studies; ferrous iron; iron; metals; methods; mining; Mocanaqua; organic residues; Pennsylvania; pollution; reverse osmosis; sedimentary rocks; treatment; United States 22, Environmental geology |
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0085-7068 |
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Treatment of ferrous iron acid mine drainage by reverse osmosis; 1976-011825; illus. incl. tables United States (USA); GeoRef; English |
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CBU @ c.wolke @ 6846 |
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208 |
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