| Records |
Author  |
Zhuang, J.M. |
| Title |
Lignor(TM) process for acidic rock drainage treatment |
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Journal Article |
| Year |
2004 |
Publication |
Environ. Technol. |
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| Volume |
25 |
Issue |
9 |
Pages |
1031-1040 |
| Keywords |
mine water treatment |
| Abstract |
The process using lignosulfonates for acidic rock drainage (ARD) treatment is referred to as the Lignor(TM) process. Lignosulfonates are waste by-products produced in the sulfite pulping process. The present study has shown lignosulfonates are able to protect lime from developing an external surface coating, and hence to favor its dissociation. Further, the addition of lignosulfonates to ARD solutions increased the clotting and settling rate of the formed sludge. The capability of lignosulfonates to form stable metal-lignin complexes makes them very useful in retaining metal ions and thus improving the long-term stability of the sludge against leaching. The Lignor(TM) process involves metal sorption with lignosulfonates, ARD neutralization by lime to about pH 7, pH adjustment with caustic soda to 9.4 – 9.6, air oxidation to lower the pH to a desired level, and addition of a minimum amount of FeCl3 for further removal of dissolved metals. The Lignor(TM) process removes all concerned metals (especially Al and Mn) from the ARD of the Britannia Mine (located at Britannia Beach, British Columbia, Canada) to a level lower than the limits of the B.C. Regulations. Compared with the high-density sludge (HDS) process, the Lignor(TM) process has many advantages, such as considerable savings in lime consumption, greatly reduced sludge volume, and improved sludge stability. |
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Lignor(TM) process for acidic rock drainage treatment; Wos:000224971800006; Times Cited: 0; ISI Web of Science |
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CBU @ c.wolke @ 16998 |
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117 |
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| Author |
Zamzow, M.J.; Schultze, L.E. |
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Treatment of acid mine drainage using natural zeolites |
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Journal Article |
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1993 |
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International Conference on the Occurrence, Properties, and Utilization of Natural Zeolites |
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1993 |
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220-221 |
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abandoned mines; acid mine drainage; clinoptilolite; experimental studies; feasibility studies; framework silicates; hydrochemistry; mines; Nevada; northeastern Nevada; phillipsite; remediation; Rio Tinto Deposit; silicates; surface water; United States; zeolite group abandoned mines acid mine drainage clinoptilolite experimental studies feasibility studies framework silicates hydrochemistry mines Nevada northeastern Nevada phillipsite remediation Rio Tinto Deposit silicates surface water United States zeolite group |
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Treatment of acid mine drainage using natural zeolites; GeoRef: 95-04036 1 table; AMD ISI | Wolkersdorfer |
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CBU @ c.wolke @ 9998 |
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192 |
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Zaluski, M. |
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Design and construction of bioreactors with sulfate-reducing bacteria for acid mine drainage control |
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Journal Article |
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1999 |
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Phytoremediation and Innovative Strategies for Specialized Remedial Applications |
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205-210 |
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mine water treatment |
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At many abandoned mine sites in the Western U.S., conventional treatment of AMD is not feasible due to the of lack of power and limited site accessibility. Therefore, three bioreactors were built at an abandoned mine site in Montana to demonstrate feasibility of treating AMD using sulphate reducing bacteria (SRB) in a passive water treatment train. The SRB are capable of increasing the pH and reducing the load of dissolved metals in the effluent. The reactors, constructed in the Fall of 1998, were designed to evaluate the SRB technology applied under different environmental conditions. Each bioreactor was designed with mechanisms to enable simulation of seasonal dry and wet climatic conditions. Two bioreactors were placed in trenches and one was constructed above the ground to investigate impact of seasonal freezing and thawing on SRB activity. Two bioreactors contain a passive pretreatment section to increase pH of water before the AMD enters the bioreactor chamber. |
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Design and construction of bioreactors with sulfate-reducing bacteria for acid mine drainage control; Isip:000082416500033; Times Cited: 0; ISI Web of Science |
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CBU @ c.wolke @ 17136 |
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177 |
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Younger, P.L.; Neal, C.; House, W.A.; Leeks, G.J.L.; Marker, A.H. |
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The longevity of minewater pollution; a basis for decision-making U.K. fluxes to the North Sea; Land Ocean Interaction Study (LOIS); river basins research, the first two years |
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Journal Article |
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1997 |
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The Science of the Total Environment |
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194-195 |
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457-466 |
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acid mine drainage; acidic composition; acidification; Cornwall England; decision-making; degradation; discharge; England; Europe; Great Britain; hydrolysis; mines; planning; pollutants; pollution; remediation; retention; Scotland; soils; surface water; United Kingdom; Wales; waste disposal; water quality; Western Europe 22, Environmental geology |
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0048-9697 |
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The longevity of minewater pollution; a basis for decision-making U.K. fluxes to the North Sea; Land Ocean Interaction Study (LOIS); river basins research, the first two years; 1997-078352; Special issue References: 30; illus. Netherlands (NLD); GeoRef; English |
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CBU @ c.wolke @ 6259 |
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193 |
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Younger, P.L.; Cornford, C. |
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Mine water pollution from Kernow to Kwazulu-Natal; geochemical remedial options and their selection in practice |
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Journal Article |
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2002 |
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Africa Bolivia case studies Cornwall England cost decision-making decontamination Durham England England Europe geochemistry Great Britain Hlobane Colliery hydrology Kernow England KwaZulu-Natal South Africa metals Milluni Mine mine drainage monitoring pollutants pollution Quaking Houses England remediation South Africa South America South Crofty Mine South-West England Southern Africa United Kingdom water treatment Western Europe Wheal Jane Mine 22, Environmental geology |
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Pollution by mine drainage is a major problem in many parts of the world. The most frequent contaminants are Fe, Mn, Al and SO (sub 4) with locally important contributions by other metals/metalloids including (in order of decreasing frequency) Zn, Cu, As, Ni, Cd and Pb. Remedial options for such polluted drainage include monitored natural attenuation, physical intervention to minimise pollutant release, and active and passive water treatment technologies. Based on the assessment of the key hydrological and geochemical attributes of mine water discharges, a rational decision-making framework has now been developed for deciding which (or which combinations) of these options to implement in a specific case. Five case studies illustrate the application of this decision-making process in practice: Wheal Jane and South Crofty (Cornwall), Quaking Houses (Co Durham), Hlobane Colliery (South Africa) and Milluni Tin Mine (Bolivia). In many cases, particularly where the socio-environmental stakes are particularly high, the economic, political and ecological issues will prove even more challenging than the technical difficulties involved in implementing remedial interventions which will be robust in the long term. Hence truly “holistic” mine water remediation is a multi-dimensional business, involving teamwork by a range of geoscientific, hydroecological and socio-economic specialists. |
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Proceedings of the Ussher Society, vol.10, Part 3 |
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40th annual meeting of the Ussher Society |
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2004-019557; 40th annual meeting of the Ussher Society, Saint Austell, United Kingdom, Jan. 3-4, 2002 Scott Simpson lecture References: 39; illus. incl. 3 tables; GeoRef; English |
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CBU @ c.wolke @ 16506 |
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194 |
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