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Author (up) Chung, I.J.
Title Immobilization of arsenic in tailing by using iron and hydrogen peroxide Type Journal Article
Year 2001 Publication Environ. Technol. Abbreviated Journal
Volume 22 Issue 7 Pages 831-835
Keywords mine water treatment
Abstract Under environmental conditions, arsenic (As) reveals anionic behavior and is converted into various forms in accordance with the Eh/pH condition. This causes the difficulty of treating As with other heavy metals in tailing. This study was carried out to develop the immobilization method of arsenic in tailing as ferric arsenate (FeAsO4) using hydrogen peroxide. According to experimental results, the extracted concentrations of arsenic and iron (Fe) from tailing were reduced up to 84% and 93%, respectively. In the experiment using pure Pyrite (FeS2) and As solution, As concentration decreased with an increase of hydrogen peroxide dosage. The experimental results of re-extraction showed that only 10% of As and 20% of Fe were extracted in the case of using hydrogen peroxide. As a result, the long-term stability of this method was clarified.
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Notes Immobilization of arsenic in tailing by using iron and hydrogen peroxide; Wos:000170195000008; Times Cited: 0; ISI Web of Science Approved no
Call Number CBU @ c.wolke @ 17046 Serial 123
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Author (up) Conca, J.L.; Wright, J.
Title An Apatite II permeable reactive barrier to remediate groundwater containing Zn, Pb and Cd Type Journal Article
Year 2006 Publication Appl. Geochem. Abbreviated Journal
Volume 21 Issue 12 Pages 2188-2200
Keywords 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
Abstract 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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ISSN 0883-2927 ISBN Medium
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Notes Dec.; An Apatite II permeable reactive barrier to remediate groundwater containing Zn, Pb and Cd; Science Direct Approved no
Call Number CBU @ c.wolke @ 17248 Serial 44
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Author (up) Costigan, P.A.
Title The reclamation of acidic colliery spoil .3. Problems associated with the use of high-rates of limestone Type Journal Article
Year 1982 Publication Journal of Applied Ecology Abbreviated Journal
Volume 19 Issue 1 Pages 193-201
Keywords mine water treatment
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Notes The reclamation of acidic colliery spoil .3. Problems associated with the use of high-rates of limestone; Wos:A1982nq52600017; Times Cited: 5; ISI Web of Science Approved no
Call Number CBU @ c.wolke @ 9185 Serial 96
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Author (up) Coulton, R.; Bullen, C.; Hallett, C.
Title The design and optimisation of active mine water treatment plants Type Journal Article
Year 2003 Publication Land Contam. Reclam. Abbreviated Journal
Volume 11 Issue 2 Pages 273-280
Keywords sludge mine water treatment mine water active treatment precipitation iron manganese high density sludge sulphide Groundwater problems and environmental effects Pollution and waste management non radioactive manganese sulfide pollutant removal iron water treatment mine drainage
Abstract This paper provides a 'state of the art' overview of active mine water treatment. The paper discusses the process and reagent selection options commonly available to the designer of an active mine water treatment plant. Comparisons are made between each of these options, based on technical and financial criteria. The various different treatment technologies available are reviewed and comparisons made between conventional precipitation (using hydroxides, sulphides and carbonates), high density sludge processes and super-saturation precipitation. The selection of reagents (quick lime, slaked lime, sodium hydroxide, sodium carbonate, magnesium hydroxide, and proprietary chemicals) is considered and a comparison made on the basis of reagent cost, ease of use, final effluent quality and sludge settling criteria. The choice of oxidising agent (air, pure oxygen, peroxide, etc.) for conversion of ferrous to ferric iron is also considered. Whole life costs comparisons (capital, operational and decommissioning) are made between conventional hydroxide precipitation and the high density sludge process, based on the actual treatment requirements for four different mine waters.
Address R. Coulton, Unipure Europe Ltd., Wonastow Road, Monmouth NP25 5JA, United Kingdom
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ISSN 0967-0513 ISBN Medium
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Notes The design and optimisation of active mine water treatment plants; 2530436; United-Kingdom 4; Geobase Approved no
Call Number CBU @ c.wolke @ 17513 Serial 59
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Author (up) Coulton, R.H.; Williams, K.P.
Title Active treatment of mine water; a European perspective Type Journal Article
Year 2005 Publication Mine Water Env. Abbreviated Journal
Volume 24 Issue 1 Pages 23-26
Keywords 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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ISSN 1025-9112 ISBN Medium
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Notes Active treatment of mine water; a European perspective; 2007-023995; illus. incl. 3 tables Federal Republic of Germany (DEU); GeoRef; English Approved no
Call Number CBU @ c.wolke @ 5412 Serial 20
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