| Records |
| Author |
Blowes, D.W.; Ptacek, C.J.; Benner, S.G.; McRae, C.W.T.; Bennett, T.A.; Puls, R.W. |
| Title |
Treatment of inorganic contaminants using permeable reactive barriers |
Type |
Journal Article |
| Year |
2000 |
Publication |
J Contam Hydrol |
Abbreviated Journal |
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| Volume |
45 |
Issue |
1-2 |
Pages |
123-137 |
| Keywords |
acid mine drainage; adsorption; agricultural waste; aquifers; chemical reactions; chromium; concentration; contaminant plumes; decontamination; disposal barriers; dissolved materials; drainage; ground water; heavy metals; metals; nitrate ion; nutrients; permeability; phosphate ion; pollution; pump-and-treat; remediation; sulfate ion; waste disposal; water treatment mine water treatment Remediation Groundwater Metals Nutrients Radionuclides |
| Abstract |
Permeable reactive barriers are an emerging alternative to traditional pump and treat systems for groundwater remediation. This technique has progressed rapidly over the past decade from laboratory bench-scale studies to full-scale implementation. Laboratory studies indicate the potential for treatment of a large number of inorganic contaminants, including As, Cd, Cr, Cu, Hg, Fe, Mn, Mo, Ni, Pb, Se, Tc, U, V, NO3, PO4 and SO4. Small-scale field studies have demonstrated treatment of Cd, Cr, Cu, Fe, Ni, Pb, NO3, PO4 and SO4. Permeable reactive barriers composed of zero-valent iron have been used in full-scale installations for the treatment of Cr, U, and Tc. Solid-phase organic carbon in the form of municipal compost has been used to remove dissolved constituents associated with acid-mine drainage, including SO4, Fe, Ni, Co and Zn. Dissolved nutrients, including NO3 and PO4, have been removed from domestic septic-system effluent and agricultural drainage. |
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0169-7722 |
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Sept.; Treatment of inorganic contaminants using permeable reactive barriers; file:///C:/Dokumente%20und%20Einstellungen/Stefan/Eigene%20Dateien/Artikel/9401.pdf; Science Direct |
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no |
| Call Number |
CBU @ c.wolke @ 9401 |
Serial |
46 |
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| Author |
Matlock, M.M.; Howerton, B.S.; Atwood, D.A. |
| Title |
Chemical precipitation of heavy metals from acid mine drainage |
Type |
Journal Article |
| Year |
2002 |
Publication |
Water Res |
Abbreviated Journal |
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| Volume |
36 |
Issue |
19 |
Pages |
4757-4764 |
| Keywords |
mine water treatment BDET Acid mine drainage Water treatment Remediation Heavy metals Chemical precipitation Mercury Iron |
| Abstract |
The 1,3-benzenediamidoethanethiol dianion (BDET, known commercially as MetX) has been developed to selectively and irreversibly bind soft heavy metals from aqueous solution. In the present study BDET was found to remove >90% of several toxic or problematic metals from AMD samples taken from an abandoned mine in Pikeville, Kentucky. The concentrations of metals such as iron, may be reduced at pH 4.5 from 194 ppm to below 0.009 ppm. The formation of stoichiomietric BDET-metal precipitates in this process was confirmed using X-ray powder diffraction (XRD), proton nuclear magnetic resonance (1H NMR), and infrared spectroscopy (IR). |
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0043-1354 |
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Nov.; Chemical precipitation of heavy metals from acid mine drainage; file:///C:/Dokumente%20und%20Einstellungen/Stefan/Eigene%20Dateien/Artikel/15005.pdf; Science Direct |
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no |
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CBU @ c.wolke @ 15005 |
Serial |
48 |
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| Author |
Tsukamoto, T.K.; Miller, G.C. |
| Title |
Methanol as a Carbon Source for Microbiological Treatment of Acid Mine Drainage |
Type |
Journal Article |
| Year |
1999 |
Publication |
Water Res. |
Abbreviated Journal |
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| Volume |
33 |
Issue |
6 |
Pages |
1365-1370 |
| Keywords |
mine water treatment mining activity sulfate-reducing bacteria microbial activity acid mine drainage methanol passive treatment systems sulfate-reducing bacterium sp-nov |
| Abstract |
Sulfate reducing passive bioreactors are increasingly being used to remove metals and raise the pH of acidic waste streams from abandoned mines. These systems commonly use a variety of organic substrates (i.e. manure, wood chips) for sulfate reduction. The effectiveness of these systems decreases as easily accessible reducing equivalents are consumed in the substrate through microbial activity. Using column studies at room temperature (23-26 degrees C), we investigated the addition of lactate and methanol to a depleted manure substrate as a method to reactivate a bioreactor that had lost >95% of sulfate reduction activity. A preliminary experiment compared sulfate removal in gravity fed, flow through bioreactors in which similar masses of each substrate were added to the influent solution. Addition of 148 mg/l lactate resulted in a 69% reduction in sulfate concentration from 300 to 92 mg/l, while addition of 144 mg/l methanol resulted in an 88% reduction in sulfate concentration from 300 to 36 mg/l. Because methanol was found to be an effective sulfate reducing substrate, it was chosen for further experiments due to its inherent physical properties (cost, low freezing point and low viscosity liquid) that make it a superior substrate for remote, high elevation sites where freezing temperatures would hamper the use of aqueous solutions. In these column studies, water containing sulfate and ferrous iron was gravity-fed through the bioreactor columns, along with predetermined methanol concentrations containing reducing equivalents to remove 54% of the sulfate. Following an acclimation period for the columns, sulfate concentrations were reduced from of 900 mg/l in the influent to 454 mg/l in the effluent, that reflects a 93% efficiency of electrons from the donor to the terminal electron acceptor. Iron concentrations were reduced from 100 to 2 mg/l and the pH increased nearly 2 units. (C) 1999 Elsevier Science Ltd. |
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0043-1354 |
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| Notes |
Apr; Methanol as a Carbon Source for Microbiological Treatment of Acid Mine Drainage; Isi:000079485400004; file:///C:/Dokumente%20und%20Einstellungen/Stefan/Eigene%20Dateien/Artikel/10197.pdf; AMD ISI | Wolkersdorfer |
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no |
| Call Number |
CBU @ c.wolke @ 10197 |
Serial |
50 |
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| Author |
Kuyucak, N. |
| Title |
Mining, the Environment and the Treatment of Mine Effluents |
Type |
Journal Article |
| Year |
1998 |
Publication |
Int. J. Environ. Pollut. |
Abbreviated Journal |
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| Volume |
10 |
Issue |
2 |
Pages |
315-325 |
| Keywords |
mine water treatment acid mine drainage high density sludge lime neutralization mining environment passive treatment sulfate-reducing bacteria |
| Abstract |
The environmental impact of mining on the ecosystem, including land, water and air, has become an unavoidable reality. Guidelines and regulations have been promulgated to protect the environment throughout mining activities from start-up to site decommissioning. In particular, the occurrence of acid mine drainage (AMD), due to oxidation of sulfide mineral wastes, has become the major area of concern to many mining industries during operations and after site decommissioning. AMD is characterized by high acidity and a high concentration of sulfates and dissolved metals. If it cannot be prevented or controlled, it must be treated to eliminate acidity, and reduce heavy metals and suspended solids before release to the environment. This paper discusses conventional and new methods used for the treatment of mine effluents, in particular the treatment of AMD. |
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0957-4352 |
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Mining, the Environment and the Treatment of Mine Effluents; Isi:000078420600009; AMD ISI | Wolkersdorfer |
Approved |
no |
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CBU @ c.wolke @ 17477 |
Serial |
56 |
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| Author |
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 |
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| 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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0967-0513 |
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The design and optimisation of active mine water treatment plants; 2530436; United-Kingdom 4; Geobase |
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no |
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CBU @ c.wolke @ 17513 |
Serial |
59 |
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