| Records |
| Author |
Jarvis, A.P.; Younger, P.L. |
| Title |
Passive treatment of ferruginous mine waters using high surface area media |
Type |
Journal Article |
| Year |
2001 |
Publication |
Water Res. |
Abbreviated Journal |
|
| Volume |
35 |
Issue |
15 |
Pages |
3643-3648 |
| Keywords |
mine water treatment passive treatment mine water accretion oxidation iron manganese water treatment |
| Abstract |
Rapid oxidation and accretion of iron onto high surface area media has been investigated as a potential passive treatment option for ferruginous, net-alkaline minewaters. Two pilot-scale reactors were installed at a site in County Durham, UK. Each 2.0m high cylinder contained different high surface area plastic trickling filter media. Ferruginous minewater was fed downwards over the media at various flow-rates with the objective of establishing the efficiency of iron removal at different loading rates. Residence time of water within the reactors was between 70 and 360s depending on the flow-rate (1 and 12l/min, respectively). Average influent total iron concentration for the duration of these experiments was 1.43mg/l (range 1.08-1.84mg/l; n=16), whilst effluent iron concentrations averaged 0.41mg/l (range 0.20-1.04mg/l; n=15) for Reactor A and 0.38mg/l (range 0.11-0.93mg/l; n=16) for Reactor B. There is a strong correlation between influent iron load and iron removal rate. Even at the highest loading rates (approximately 31.6g/day) 43% and 49% of the total iron load was removed in Reactors A and B, respectively. At low manganese loading rates (approximately 0.50-0.90g/day) over 50% of the manganese was removed in Reactor B. Iron removal rate (g/m3/d) increases linearly with loading rate (g/day) up to 14g/d and the slope of the line indicates that a mean of 85% of the iron is removed. In conclusion, it appears that the oxidation and accretion of ochre on high surface area media may be a promising alternative passive technology to constructed wetlands at certain sites. |
Address  |
|
| Corporate Author |
|
Thesis |
|
| Publisher |
|
Place of Publication |
|
Editor |
|
| Language |
|
Summary Language |
|
Original Title |
|
| Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
| Series Volume |
|
Series Issue |
|
Edition |
|
| ISSN |
0043-1354 |
ISBN |
|
Medium |
|
| Area |
|
Expedition |
|
Conference |
|
| Notes |
Oct; Passive treatment of ferruginous mine waters using high surface area media; 9; file:///C:/Dokumente%20und%20Einstellungen/Stefan/Eigene%20Dateien/Artikel/9698.pdf; AMD ISI | Wolkersdorfer |
Approved |
no |
| Call Number |
CBU @ c.wolke @ 9698 |
Serial |
27 |
| Permanent link to this record |
| |
|
| |
| Author |
Younger, P.L. |
| Title |
Holistic remedial strategies for short- and long-term water pollution from abandoned mines |
Type |
Journal Article |
| Year |
2000 |
Publication |
Transactions of the Institution of Mining and Metallurgy Section a-Mining Technology |
Abbreviated Journal |
|
| Volume |
109 |
Issue |
|
Pages |
A210-A218 |
| Keywords |
abandoned mines acid mine drainage Europe mines mining planning pollution remediation United Kingdom water pollution Western Europe |
| Abstract |
Where mining proceeds below the water-table-as it has extensively in Britain and elsewhere-water ingress is not only a hindrance during mineral extraction but also a potential liability after abandonment. This is because the cessation of dewatering that commonly follows mine closure leads to a rise in the water-table and associated, often rapid, changes in the chemical regime of the subsurface. Studies over the past two decades have provided insights into the nature and time-scales of these changes and provide a basis for rational planning of mine-water management during and after mine abandonment. The same insights into mine-water chemistry provide hints for the efficient remediation of pollution (typically due to Fe, Mn and Al and, in some cases, Zn, Cd, Pb and other metals). Intensive treatment (by chemical dosing with enhanced sedimentation or alternative processes, such as sulphidization or reverse osmosis) is often necessary only during the first few years following complete flooding of mine voids. Passive treatment (by the use of gravity-flow geochemical reactors and wetlands) may be both more cost-effective and ecologically more responsible in the long term. By the end of 1999 a total of 28 passive systems had been installed at United Kingdom mine sites, including examples of system types currently unique to the United Kingdom. Early performance data for all the systems are summarized and shown to demonstrate the efficacy of passive treatment when appropriately applied. |
| Address |
|
| Corporate Author |
|
Thesis |
|
| Publisher |
|
Place of Publication |
|
Editor |
|
| Language |
|
Summary Language |
|
Original Title |
|
| Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
| Series Volume |
|
Series Issue |
|
Edition |
|
| ISSN |
0371-7844 |
ISBN |
|
Medium |
|
| Area |
|
Expedition |
|
Conference |
|
| Notes |
Holistic remedial strategies for short- and long-term water pollution from abandoned mines; Wos:000167240600013; Times Cited: 2; ISI Web of Science |
Approved |
no |
| Call Number |
CBU @ c.wolke @ 17458 |
Serial |
126 |
| Permanent link to this record |
| |
|
| |
| Author |
Younger, P.L. |
| Title |
Passive in situ remediation of acidic mine waste leachates: progress and prospects |
Type |
Journal Article |
| Year |
2003 |
Publication |
Land Reclamation: Extending the Boundaries |
Abbreviated Journal |
|
| Volume |
|
Issue |
|
Pages |
253-264 |
| Keywords |
mine water treatment |
| Abstract |
The reclamation of former mining sites is a major challenge in many parts of the world. In relation to the restoration of spoil heaps (mine waste rock piles) and similar bodies of opencast backfill, key challenges include (i) the establishment of stable slopes and minimization of other geotechnical hazards (ii) developing and maintaining a healthy vegetative cover (iii) managing the hydrological behaviour of the restored ground. Significant advances have been made over the past four decades in relation to all four of these objectives. One of the most recalcitrant problems is the ongoing generation and release of acidic leachates, which typically emerge at the toes of (otherwise restored) spoil heaps in the form of springs and seepage areas. Such features are testament to the presence of a “perched” groundwater circulation system within the spoil, and their acidity reflects the continued penetration of oxygen to zones within the heaps which contain reactive pyrite (and other iron sulphide minerals). Two obvious strategies for dealing with this problem are disruption of the perched groundwater system and/or exclusion of oxygen entry. These strategies are now being pursued with considerable success where spoil is being reclaimed for the first time, by the installation of two types of physical barrier (dry covers and water covers). However, where a spoil heap has already been revegetated some decades ago, the destruction of an established sward or woodland in order to retro-fit a dry cover or water cover is rarely an attractive option for dealing with the “secondary dereliction” represented by ongoing toe seepages of acidic leachates. More attractive by far are passive treatment techniques, in which the polluted water is forced to flow through reactive media which serve to neutralize its acidity and remove toxic metals from solution. A brief historical review of the development of such systems reveals a general progression from using limestone as the key neutralizing agent, through a combined use of limestone and compost, to systems in which almost all of the neutralization is achieved by means of bacterial sulphate reduction in the saturated compost media of subsurface-flow bioreactors. In almost all cases, these passive treatment systems include an aerobic, surface flow wetland as the final “polishing” step in the treatment process. Such wetlands combine treatment functions (efficient removal of metals from the now-neutralized waters down to low residual concentrations, and re-oxygenating the water prior to discharge to receiving watercourses) with amenity value (attractive areas for recreational walking, bird-watching etc) and ecological value. |
| Address |
|
| Corporate Author |
|
Thesis |
|
| Publisher |
|
Place of Publication |
|
Editor |
|
| Language |
|
Summary Language |
|
Original Title |
|
| Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
| Series Volume |
|
Series Issue |
|
Edition |
|
| ISSN |
|
ISBN |
|
Medium |
|
| Area |
|
Expedition |
|
Conference |
|
| Notes |
Passive in situ remediation of acidic mine waste leachates: progress and prospects; Isip:000183447100035; Times Cited: 0; ISI Web of Science |
Approved |
no |
| Call Number |
CBU @ c.wolke @ 17016 |
Serial |
158 |
| Permanent link to this record |
| |
|
| |
| Author |
Younger, P.L.; Neal, C.; House, W.A.; Leeks, G.J.L.; Marker, A.H. |
| Title |
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 |
Type |
Journal Article |
| Year |
1997 |
Publication |
The Science of the Total Environment |
Abbreviated Journal |
|
| Volume |
194-195 |
Issue |
|
Pages |
457-466 |
| Keywords |
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 |
| Abstract |
|
| Address |
|
| Corporate Author |
|
Thesis |
|
| Publisher |
|
Place of Publication |
|
Editor |
|
| Language |
|
Summary Language |
|
Original Title |
|
| Series Editor |
|
Series Title |
|
Abbreviated Series Title |
|
| Series Volume |
|
Series Issue |
|
Edition |
|
| ISSN |
0048-9697 |
ISBN |
|
Medium |
|
| Area |
|
Expedition |
|
Conference |
|
| Notes |
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 |
Approved |
no |
| Call Number |
CBU @ c.wolke @ 6259 |
Serial |
193 |
| Permanent link to this record |
| |
|
| |
| Author |
Younger, P.L.; Cornford, C. |
| Title |
Mine water pollution from Kernow to Kwazulu-Natal; geochemical remedial options and their selection in practice |
Type |
Journal Article |
| Year |
2002 |
Publication |
|
Abbreviated Journal |
|
| Volume |
|
Issue |
|
Pages |
|
| Keywords |
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 |
| Abstract |
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. |
| Address |
|
| Corporate Author |
|
Thesis |
|
| Publisher |
Proceedings of the Ussher Society, vol.10, Part 3 |
Place of Publication |
|
Editor |
|
| Language |
|
Summary Language |
|
Original Title |
|
| Series Editor |
|
Series Title |
40th annual meeting of the Ussher Society |
Abbreviated Series Title |
|
| Series Volume |
|
Series Issue |
|
Edition |
|
| ISSN |
|
ISBN |
|
Medium |
|
| Area |
|
Expedition |
|
Conference |
|
| Notes |
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 |
Approved |
no |
| Call Number |
CBU @ c.wolke @ 16506 |
Serial |
194 |
| Permanent link to this record |
