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Author O'Sullivan, A.D.; McCabe, O.M.; Murray, D.A.; Otte, M.L.
Title Wetlands for rehabilitation of metal mine wastes Type Journal Article
Year 1999 Publication Biology and Environment-Proceedings of the Royal Irish Academy Abbreviated Journal
Volume 99b Issue 1 Pages 11-17
Keywords mine water treatment
Abstract Aspects of research work undertaken by the Wetland Ecology Research Group at University College Dublin are summarised here. Wastes from mining activities generally contain high concentrations of heavy metals and other toxic substances. Reclamation methods to treat these wastes include the use of wetlands, for revegetation of mine tailings under flooded conditions and for the treatment of tailings water. Both natural and constructed wetlands are frequently employed for the treatment of mine wastes. Through a complex array of plant, soil and microbial interactions contaminants, such as heavy metals and sulphates, can be successfully removed from wastewater. Suitable vegetation can stabilise the tailings sediment, thereby preventing it from being dust-blown or leached into the surrounding environment. Our research suggests that these two techniques for treatment of mine wastes are successful and economically viable.
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Notes (down) Wetlands for rehabilitation of metal mine wastes; Wos:000083281300003; Times Cited: 4; ISI Web of Science Approved no
Call Number CBU @ c.wolke @ 17127 Serial 130
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Author Oleary, W.
Title Wastewater recycling and environmental constraints at a base metal mine and process facilities Type Journal Article
Year 1996 Publication Water Sci. Technol. Abbreviated Journal
Volume 33 Issue 10-11 Pages 371-379
Keywords mine water treatment
Abstract In temperate areas of abundant freshwater there is seldom an urgency to recycle. The statutory protection of inland waters for beneficial uses such as drinking, food processing and game fishing is requiring industries to choose recycling. A European success in this trend is a base metal mining/milling industry which, since 1977, is implementing hydraulic, hydrological, treatment and ecological studies with wastewaters and mine tailings. A model activity, located 50 km from Dublin is considered. Zinc and lead concentrates produced and exported to smelters ultimately yield approximately 194,000 t and 54,000 t of these respective metals (32 and 21 percent of European production). Water use as originally planned would have been approximately 6m(3)/t of ore milled. While ore milling increased by 25 percent to 8,500t/d in 1993, water use declined by 33 percent to 4m(3)/t. The components making up this reduction range from milling technology efficiency to greater recycling from the 165 ha tailings pond. Environmental standards, based on framework regulations originating in EU Directives, have been instrumental in achieving wastewater savings. A conclusion is the value of integrating water quantity, quality, recycling, storage, production and other factors early in project planning. Copyright (C) 1996 IAWQ. Published by Elsevier Science Ltd.
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Notes (down) Wastewater recycling and environmental constraints at a base metal mine and process facilities; Wos:A1996vb13300041; Times Cited: 1; ISI Web of Science Approved no
Call Number CBU @ c.wolke @ 17170 Serial 84
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Author Carland, R.M.
Title Use of natural sedimentary zeolites for metal ion recovery from hydrometallurgical solutions and for the environmental remediation of acid mine drainage Type Journal Article
Year 1995 Publication Proceedings of the Xix International Mineral Processing Congress, Vol 4 Abbreviated Journal
Volume Issue Pages 95-100
Keywords mine water treatment
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Notes (down) Use of natural sedimentary zeolites for metal ion recovery from hydrometallurgical solutions and for the environmental remediation of acid mine drainage; Isip:A1995be33e00020; Times Cited: 0; ISI Web of Science Approved no
Call Number CBU @ c.wolke @ 17179 Serial 145
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Author Bechard, G.
Title Use Of Cellulosic Substrates For The Microbial Treatment Of Acid-Mine Drainage Type Journal Article
Year 1994 Publication Journal of Environmental Quality Abbreviated Journal
Volume 23 Issue 1 Pages 111-116
Keywords mine water treatment
Abstract 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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Notes (down) Use Of Cellulosic Substrates For The Microbial Treatment Of Acid-Mine Drainage; Wos:A1994mu33000017; Times Cited: 22; ISI Web of Science Approved no
Call Number CBU @ c.wolke @ 17194 Serial 89
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Author Ye, Z.H.
Title Use of a wetland system for treating Pb/Zn mine effluent: A case study in southern China from 1984 to 2002 Type Journal Article
Year 2004 Publication Wetlands Ecosystems in Asia: Function and Management Abbreviated Journal
Volume 1 Issue Pages 413-434
Keywords mine water treatment
Abstract A constructed wetland system in Guangdong Province, South of China has been used for treating Pb/Zn mine discharge since 1984. In this chapter, the performance of this system in the purification of mine discharge, metal accumulation in different ecological compartments and ecological succession within the system during the period of 1984-2002 has been reviewed. The data show that the wetland system not only effectively remove metals (mainly Pb, Zn, Cd and Cu) and total suspended solids from the mine discharge over a long period leading to significant improvement in water quality, but also gradually increase diversity and abundance of living organisms.
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Notes (down) Use of a wetland system for treating Pb/Zn mine effluent: A case study in southern China from 1984 to 2002; Isip:000226088800023; Times Cited: 0; ISI Web of Science Approved no
Call Number CBU @ c.wolke @ 16997 Serial 155
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