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Coulton, R.H.; Williams, K.P. |
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Title |
Active treatment of mine water; a European perspective |
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Journal Article |
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Year |
2005 |
Publication |
Mine Water Env. |
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24 |
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1 |
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23-26 |
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abandoned mines; Europe; ground water; mines; mining; pollutants; pollution; protection; surface water; water pollution; water quality; water treatment 22, Environmental geology |
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1025-9112 |
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Active treatment of mine water; a European perspective; 2007-023995; illus. incl. 3 tables Federal Republic of Germany (DEU); GeoRef; English |
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CBU @ c.wolke @ 5412 |
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20 |
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Author |
Smyth, D.; Blowes, D.; Ptacek, C.; Bain, J. |
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Title |
Application of permeable reactive barriers for treating mine drainage and dissolved metals in groundwater |
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Journal Article |
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Year |
2004 |
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Geotechnical News |
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22 |
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1 |
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39-44 |
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acid mine drainage; acid rock drainage; aquifers; Canada; Cochrane District Ontario; concentration; disposal barriers; Eastern Canada; ground water; Kidd Creek; mine drainage; mines; Ontario; oxidation; permeability; permeable reactive barrier; pollutants; pollution; remediation; sulfates; sulfides; tailings; testing; Timmins Ontario; waste disposal; waste management; waste rock; waste water; water treatment 22, Environmental geology |
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0823-650x |
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Application of permeable reactive barriers for treating mine drainage and dissolved metals in groundwater; 2006-058196; References: 20; sects. Canada (CAN); GeoRef; English |
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CBU @ c.wolke @ 5457 |
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66 |
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McLeod, K.W.; Ciravolo, T.G. |
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Sensitivity of water tupelo (Nyssa aquatica) and bald cypress (Taxodium distichum) seedlings to manganese enrichment under water-saturated conditions |
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Journal Article |
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2003 |
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Environmental Toxicology and Chemistry |
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22 |
Issue |
12 |
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2948-2951 |
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Heavy metals ecological abstracts: pollution (73 7 3) seedling saturated medium biomass manganese sensitivity analysis bioaccumulation Nyssa aquatica Taxodium distichum |
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In anaerobic soils of wetlands, Mn is highly available to plants because of the decreasing redox potential and pH of flooded soil. When growing adjacent to each another in wetland forests, water tupelo (Nyssa aquatica L.) had 10 times greater leaf manganese concentration than bald cypress (Taxodium distichum [L.] Richard). This interspecific difference was examined over a range of manganese-enriched soil conditions in a greenhouse experiment. Water tupelo and bald cypress seedlings were grown in fertilized potting soil enriched with 0, 40, 80, 160, 240, 320, and 400 mg Mn/L of soil and kept at saturated to slightly flooded conditions. Leaf Mn concentration was greater in water tupelo than bald cypress for all but the highest Mn addition treatment. Growth of water tupelo seedlings was adversely affected in treatments greater than 160 mg Mn/L. Total biomass of water tupelo in the highest Mn treatment was less than 50% of the control. At low levels of added Mn, bald cypress was able to restrict uptake of Mn at the roots with resulting low leaf Mn concentrations. Once that root restriction was exceeded, Mn concentration in bald cypress leaves increased greatly with treatment; that is, the highest treatment was 40 times greater than control (4,603 vs 100 < mu >g/g, respectively), but biomass of bald cypress was unaffected by manganese additions. Bald cypress, a tree that does not naturally accumulate manganese, does so under manganese-enriched conditions and without biomass reduction in contrast to water tupelo, which is severely affected by higher soil Mn concentrations. Thus, bald cypress would be less affected by increased manganese availability in swamps receiving acidic inputs such as acid mine drainage, acid rain, or oxidization of pyritic soils. |
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K.W. McLeod, Savannah River Ecology Laboratory, University of Georgia, P.O. Drawer E, Aiken, SC 29802, United States mcleod@srel.edu |
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0730-7268 |
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Sensitivity of water tupelo (Nyssa aquatica) and bald cypress (Taxodium distichum) seedlings to manganese enrichment under water-saturated conditions; 2574798; United-States 15; Geobase |
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CBU @ c.wolke @ 16010 |
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302 |
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Author |
Conca, J.L.; Wright, J. |
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An Apatite II permeable reactive barrier to remediate groundwater containing Zn, Pb and Cd |
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Journal Article |
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2006 |
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Appl. Geochem. |
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21 |
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12 |
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2188-2200 |
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Pollution and waste management non radioactive Groundwater quality apatite groundwater remediation zinc lead cadmium acid mine drainage copper sulfate nitrate permeability water treatment precipitation chemistry |
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Phosphate-induced metal stabilization involving the reactive medium Apatite II(TM) [Ca10-xNax(PO4)6-x(CO3)x(OH)2], where x < 1, was used in a subsurface permeable reactive barrier (PRB) to treat acid mine drainage in a shallow alluvial groundwater containing elevated concentrations of Zn, Pb, Cd, Cu, SO4 and NO3. The groundwater is treated in situ before it enters the East Fork of Ninemile Creek, a tributary to the Coeur d'Alene River, Idaho. Microbially mediated SO4 reduction and the subsequent precipitation of sphalerite [ZnS] is the primary mechanism occurring for immobilization of Zn and Cd. Precipitation of pyromorphite [Pb10(PO4)6(OH,Cl)2] is the most likely mechanism for immobilization of Pb. Precipitation is occurring directly on the original Apatite II. The emplaced PRB has been operating successfully since January of 2001, and has reduced the concentrations of Cd and Pb to below detection (2 μg L-1), has reduced Zn to near background in this region (about 100 μg L-1), and has reduced SO4 by between 100 and 200 mg L-1 and NO3 to below detection (50 μg L-1). The PRB, filled with 90 tonnes of Apatite II, has removed about 4550 kg of Zn, 91 kg of Pb and 45 kg of Cd, but 90% of the immobilization is occurring in the first 20% of the barrier, wherein the reactive media now contain up to 25 wt% Zn. Field observations indicate that about 30% of the Apatite II material is spent (consumed). |
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0883-2927 |
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Dec.; An Apatite II permeable reactive barrier to remediate groundwater containing Zn, Pb and Cd; Science Direct |
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CBU @ c.wolke @ 17248 |
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44 |
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Author |
LaPointe, F.; Fytas, K.; McConchie, D. |
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Title |
Using permeable reactive barriers for the treatment of acid rock drainage |
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Journal Article |
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2005 |
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International journal of surface mining, reclamation and environment |
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19 |
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1 |
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57-65 |
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Pollution and waste management non radioactive Groundwater problems and environmental effects geological abstracts: environmental geology (72 14 2) geomechanics abstracts: excavations (77 10 10) waste management remediation mining industry pollution control acid mine drainage reactive barrier aluminium industry effluents industrial waste mineral processing industry oxidation waste handling permeable reactive barriers acid rock drainage treatment acid mine drainage environmental problem Canadian mineral industry oxidation sulphide minerals mine waste mine tailings heavy metals acid remediation technology metallurgical residues aluminium extraction industry acid mine effluents Manufacturing and Production acid mine drainage Bauxsol Canada disposal barriers effluents experimental studies heavy metals instruments oxidation permeable reactive barriers pollutants pollution pyrite pyrrhotite remediation sulfides tailings waste disposal waste management |
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Acid mine drainage (AMD) is the most serious environmental problem facing the Canadian mineral industry today. It results from oxidation of sulphide minerals (e.g. pyrite or pyrrhotite) contained in mine waste or mine tailings and is characterized by acid effluents rich in heavy metals that are released into the environment. A new acid remediation technology is presented, by which metallurgical residues from the aluminium extraction industry are used to construct permeable reactive barriers (PRBs) to treat acid mine effluents. This technology is very promising for treating acid mine effluents in order to decrease their harmful environmental effects |
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1389-5265 |
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Using permeable reactive barriers for the treatment of acid rock drainage; 8467608; Journal Paper; SilverPlatter; Ovid Technologies |
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CBU @ c.wolke @ 16786 |
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12 |
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