| Records |
| Author |
Guo, F.; Yu, H. |
| Title |
Hydrogeochemistry and treatment of acid mine drainage in southern China |
Type |
Book Chapter |
| Year |
1993 |
Publication |
Proceedings of the Annual National Meeting – American Society for Surface Mining and Reclamation, vol.10 |
Abbreviated Journal |
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| Volume |
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Issue |
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Pages |
277-283 |
| Keywords |
acid mine drainage Asia bacteria chemical reactions China coal mines ecology Far East geochemistry hydrochemistry Jiangxi China lime mines oxidation pH pollution sulfides surface water trace elements water quality 22 Environmental geology 02B Hydrochemistry |
| Abstract |
Coal mines and various sulfide ore deposits are widely distributed in Southern China. Acid mine drainage associated with coal and metal sulfide deposits affects water quality in some mined areas of Southern China. Mining operations accelerate this natural deterioration of water quality by exposing greater surface areas of reactive minerals to the weathering effects of the atmosphere, hydrosphere, and biosphere. Some approaches to reduce the effects of acid mine drainage on water quality are adopted, and they can be divided into two aspects: (a) Man-made control technology based on long-term monitoring of acid mine drainage; and, (b) Neutralization of acidity through the addition of lime. It is important that metals in the waste water are removed in the process of neutralization. A new method for calculating neutralization dosage is applied. It is demonstrated that the calculated value is approximately equal to the actual required value. |
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Place of Publication |
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Editor |
Zamora, B.A.; Connolly, R.E. |
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Summary Language |
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Original Title |
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Series Title |
The challenge of integrating diverse perspectives in reclamation |
Abbreviated Series Title |
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| Notes |
Hydrogeochemistry and treatment of acid mine drainage in southern China; GeoRef; English; 2002-028935; 10th annual national meeting of the American Society for Surface Mining and Reclamation, Spokane, WA, United States, May 16, 1993 References: 3; illus. incl. 4 tables |
Approved |
no |
Call Number  |
CBU @ c.wolke @ 16744 |
Serial |
366 |
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| Author |
Parker, G.; Noller, B.; Waite, T.D. |
| Title |
Assessment of the use of fast-weathering silicate minerals to buffer AMD in surface waters in tropical Australia |
Type |
Book Chapter |
| Year |
1999 |
Publication |
Sudbury '99; Mining and the environment II; Conference proceedings |
Abbreviated Journal |
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| Volume |
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Issue |
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Pages |
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| Keywords |
acid mine drainage Australasia Australia buffers carbonate ion geochemistry Northern Territory Australia Pine Creek Geosyncline pollution pyrite sulfides surface water tropical environment water quality 22, Environmental geology |
| Abstract |
Surface waters in the Pine Creek Geosyncline (located in Australia's “Top End”, defined as the area of Australia north of 15 degrees S) are characterized by their low carbonate buffering capacity. These waters are buffered by silicate weathering and hence are slightly acidic, ranging in pH from 4.0 to 6.0. The Pine Creek Geosyncline contains most of the Top Ends' economic mineral deposits and characteristically shows no correlation between carbonate minerals and sulfidic orebodies hosting gold deposits (unlike uranium deposits). Thus many gold mines do not have ready access to carbonate minerals for buffering acid mine drainage (AMD). It is possible that locally available fast-weathering silicate minerals may be used to buffer AMD seeps. The buffering intensity of silicate minerals exceeds that of carbonate minerals, but their slow dissolution kinetics has ensured that these materials have received little attention in treating AMD. In addition, carbonate mineral dissolution is retarded when contacted with intense AMD solutions due to the formation of surface coatings of iron minerals. The lower pH range of silicate mineral dissolution may prevent the formation of such coatings. The Pine Creek Geosyncline consists of a complex geochemistry, and a number of fast-weathering silicate minerals have been noted in various areas. The difficulty in assessing such minerals for use in buffering AMD is the lack of kinetic data available under conditions prevalent AMD (i.e., low pH solutions saturated with aluminium and silica). This study sets out to evaluate the applicability of using such minerals to treat AMD surface seeps. |
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Editor |
Goldsack, D.E.; Belzile, N.; Yearwood, P.; Hall, G.J. |
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Summary Language |
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Original Title |
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Series Title |
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Series Issue |
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Edition |
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ISBN |
0886670470 |
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Expedition |
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Conference |
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| Notes |
Assessment of the use of fast-weathering silicate minerals to buffer AMD in surface waters in tropical Australia; GeoRef; English; 2000-048644; Sudbury '99; Mining and the environment II, Sudbury, ON, Canada, Sept. 13-17, 1999 References: 36; illus. incl. 2 tables |
Approved |
no |
| Call Number |
CBU @ c.wolke @ 16594 |
Serial |
273 |
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| Author |
Pettit, C.M.; Scharer, J.M.; Chambers, D.B.; Halbert, B.E.; Kirkaldy, J.L.; Bolduc, L. |
| Title |
Neutral mine drainage |
Type |
Book Chapter |
| Year |
1999 |
Publication |
Sudbury '99; mining and the environment II; Conference proceedings |
Abbreviated Journal |
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| Volume |
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Issue |
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Pages |
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| Keywords |
acid mine drainage drainage geochemistry mining mining geology models neutral mine drainage pH pollution remediation technology water management water quality water resources 22, Environmental geology |
| Abstract |
Acid mine drainage is recognized as a serious environmental issue at mine sites world wide. While sulphate and metal concentrations in acidic drainage can reach exceptionally high levels, these can also be elevated and of concern in neutral drainage from waste rock and tailings. “Neutral mine drainage” (NMD) has not yet received as widespread attention as acid mine drainage (AMD). The oxidation of sulphide minerals and the production of either acidic or neutral contaminated drainage is affected by many factors. This paper examines the specific factors that result in the production of “neutral mine drainage” from mine wastes. Several case studies are presented which involve predictive geochemical modelling to illustrate the possible time frame and magnitude of contaminated neutral drainage. |
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Thesis |
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| Publisher |
Sudbury Environmental |
Place of Publication |
Sudbury |
Editor |
Goldsack, D.; Belzile, N.; Yearwood, P.; Hall, G.J. |
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Summary Language |
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Series Title |
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Abbreviated Series Title |
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| Series Volume |
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Series Issue |
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Edition |
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| ISSN |
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ISBN |
0886670470 |
Medium |
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Expedition |
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Conference |
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| Notes |
Neutral mine drainage; GeoRef; English; 2000-043769; Sudbury '99; Mining and the environment II--Sudbury '99; L'exploitation miniere et l'environnement II, Sudbury, ON, Canada, Sept. 13-17, 1999 References: 12; illus. incl. 3 tables |
Approved |
no |
| Call Number |
CBU @ c.wolke @ 16589 |
Serial |
270 |
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| Author |
Aube, B.C.; Zinck, J.M. |
| Title |
Comparison of AMD treatment processes and their impact on sludge characteristics |
Type |
Journal Article |
| Year |
1999 |
Publication |
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Abbreviated Journal |
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| Volume |
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Issue |
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Pages |
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| Keywords |
acid mine drainage cost decontamination density discharge geochemistry hydrochemistry leaching lime metals mine dewatering neutralization pH pollution remediation sludge stability tailings toxicity viscosity waste disposal water treatment 22, Environmental geology |
| Abstract |
Lime neutralisation for the treatment of acid mine drainage is one of the oldest water pollution control techniques practised by the mineral industry. Several advances have been made in the process in the last thirty years, particularly with respect to discharge concentrations and sludge density. However, the impact of different treatment processes on metal leachability and sludge handling properties has not been investigated. A study of treatment sludges sampled from various water treatment plants has shown that substantial differences can be related to the treatment process and raw water composition. This study suggests that sludge densities, excess alkalinity, long-term compaction properties, metal leachability, crystallinity and cost efficiency can be affected by the neutralisation process and specific process parameters. The study also showed that the sludge density and dewatering ability is not positively correlated with particle size as previously suggested in numerous studies. The treatment process comparisons include sludge samples from basic lime treatment, the conventional High Density Sludge (HDS) Process, and the Geco HDS Process. |
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Place of Publication |
Sudbury |
Editor |
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Summary Language |
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Original Title |
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| Series Editor |
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Series Title |
Mining and the Environment II |
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Conference |
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| Notes |
2002-060865; Sudbury '99; Mining and the environment II--Sudbury '99; L'exploitation miniere et l'environnement, Sudbury, ON, Canada, Sept. 13-17, 1999 References: 10; illus. incl. 6 tables; GeoRef; English |
Approved |
no |
| Call Number |
CBU @ c.wolke @ 16574 |
Serial |
473 |
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| Author |
Benzaazoua, M.; Bussiere, B. |
| Title |
Desulphurization of tailings with low neutralizing potential; kinetic study and flotation modeling |
Type |
Book Chapter |
| Year |
1999 |
Publication |
Sudbury '99; Mining and the environment II; conference proceedings |
Abbreviated Journal |
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| Volume |
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Issue |
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Pages |
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| Keywords |
acid mine drainage chemical properties chemical reactions environmental analysis environmental effects experimental studies flotation geochemistry kinetics laboratory studies mathematical models neutralization pH pollution sulfur tailings 22 Environmental geology 02A General geochemistry |
| Abstract |
Environmental desulphurization is an attractive alternative for acid generating tailings management as demonstrated during the last few years. In fact, such process placed at the end of the primary treatment circuit allows to reduce greatly the amount of problematic tailings by concentrating the sulphidic fraction. Moreover, the desulphurized tailings (non-acid generating) have the geotechnical and environmental properties for being used as fine material in a cover with capillary barrier effects. To produce desulphurized tailings, non selective froth flotation is the most adapted method as shown in many previous works. Desulphurization level is fixed by tailings sulphur content (or sulphide content) and neutralization potential NP. The final residue should have enough NP to compensate for his acid generating potential AP. In this paper, the authors present the results of laboratory tests conducted in Denver cells for studying the sulphide flotation kinetics of four mine tailings which are characterized by a weak neutralization potential (under 37 kg CaCO (sub 3) /t). Tailings 1, 2, 3 and 4 contain respectively 5.27, 10, 4.25 and 16.9 sulphur Wt. %. Tailings 1 and 2 are cyanide free and are well floated at pH around 11 by using amyl xanthate as collector. Collector dosage was optimized for these tailings and the results show that Tailing 2 need more collector. However, Tailings 3 and 4, which come from a gold cyanidation process, could not provide good sulphide recovery with xanthate collector because of the pyrite depression. To overcome this problem, amine acetate was used successfully but induces important entrainment. The consumption of this collector was also optimized. The results of kinetic tests and collector dosage were combined and modeled to establish relationships which allow to estimate the desulphurization performances. |
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Thesis |
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Place of Publication |
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Editor |
Goldsack, D.; Belzile, N.; Yearwood, P.; Hall, G. |
| Language |
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Summary Language |
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Original Title |
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| Series Editor |
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Series Title |
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Abbreviated Series Title |
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| Series Volume |
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Series Issue |
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Edition |
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| ISSN |
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ISBN |
0886670470 |
Medium |
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| Area |
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Expedition |
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Conference |
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| Notes |
Desulphurization of tailings with low neutralizing potential; kinetic study and flotation modeling; GeoRef; English; 2002-060841; Sudbury '99; Mining and the environment II--Sudbury '99; L'exploitation miniere et l'environnement, Sudbury, ON, Canada, Sept. 13-17, 1999 References: 26; illus. incl. 5 tables |
Approved |
no |
| Call Number |
CBU @ c.wolke @ 16572 |
Serial |
452 |
| Permanent link to this record |
