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Author |
Sato, D.; Tazaki, K. |
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Title |
Calcification treatment of mine drainage and depositional formula of heavy metals |
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Journal Article |
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Year |
2000 |
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Chikyu Kagaku = Earth Science |
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54 |
Issue |
5 |
Pages |
328-336 |
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acid mine drainage Asia calcification deposition ettringite Far East heavy metals Ishikawa Japan Japan lime Ogoya Mine pollution sulfates waste water water treatment 22, Environmental geology |
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Abstract |
Depositional formula of heavy metals after disposal of the mine drainage from the Ogoya Mine in Ishikawa Prefecture, Japan, was mineralogically investigated. Strong acidic wastewater (pH 3.5) from pithead of the mine contains high concentration of heavy metals. In this mine, neutralizing coagulation treatment is going on by slaked lime (calcium hydroxides: Ca(OH) (sub 2) ). Core samples were collected at disposal pond to which the treated wastewater flows. The core samples were divided into 44 layers based on the color variation. The mineralogical and chemical compositions of each layer were analyzed by an X-ray powder diffractometer (XRD), an energy dispersive X-ray fluorescence analyzer (ED-XRF) and a NCS elemental analyzer. The upper parts are rich in brown colored layers, whereas discolored are the deeper parts. The color variation is relevant to Fe concentration. Brown colored core sections are composed of abundant hydrous ferric oxides with heavy metals, such as Cu, Zn, and Cd. On the other hand, S concentration gradually increases with depth. XRD data indicated that calcite decreases with increasing depth, and ettringite is produced at the deeper parts. Cd concentration shows similar vertical profile to those of calcite and ettringite. The results revealed that hydrous ferric oxides, calcite and ettringite are formed on deposition, whereby incorporating the heavy metals. |
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0366-6611 |
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Calcification treatment of mine drainage and depositional formula of heavy metals; 2001-032610; References: 19; illus. incl. 1 table, sketch map Japan (JPN); GeoRef; Japanese |
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CBU @ c.wolke @ 16543 |
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252 |
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Author |
Matsuoka, I. |
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Title |
Mine drainage treatment |
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Journal Article |
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Year |
1996 |
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Shigen to Sozai = Journal of the Mining and Materials Processing Institute of Japan |
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112 |
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5 |
Pages |
273-281 |
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Keywords |
acid mine drainage; Asia; Far East; Japan; mine dewatering; mine drainage; mines; pollution; water treatment 22, Environmental geology |
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0916-1740 |
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Mine drainage treatment; 1997-062437; References: 66; illus. incl. 9 tables Japan (JPN); GeoRef; Japanese |
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CBU @ c.wolke @ 6342 |
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305 |
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Author |
Lin, C.; Lu, W.; Wu, Y. |
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Title |
Agricultural soils irrigated with acidic mine water: Acidity, heavy metals, and crop contamination |
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Journal Article |
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2005 |
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Australian Journal of Soil Research |
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43 |
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7 |
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819-826 |
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Contamination and remediation Irrigated agriculture Soil studies geographical abstracts: physical geography soils (71 5 14) international development abstracts: agriculture and rural development (74 1 8) ecological abstracts: terrestrial ecology (73 4 2) bioaccumulation irrigation agricultural soil acid mine drainage pH crop plant heavy metal China Far East Asia Eurasia |
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Abstract |
Agricultural soils irrigated with acidic mine water from the Guangdong Dabaoshan Mine, China, were investigated. The pH of the soils could be as low as 3.9. However, most of the mineral acids introduced into the soils by irrigation were transformed to insoluble forms through acid buffering processes and thus temporarily stored in the soils. Different heavy metals exhibited different fraction distribution patterns, with Zn and Cu being mainly associated with organic matter and Pb being primarily bound to oxides (statistically significant at P = 0.05). Although the mean of exchangeable Cd was greatest among the Cd fractions, there was no statistically significant difference between the exchangeable Cd and the oxide-bound Cd (the 2nd greatest fraction) or between the exchangeable Cd and the carbonate-bound Cd (the 3rd greatest fraction). It was also found that there were generally good relationships between the concentrations of various Zn, Cu, Pb, and Cd fractions and pH, suggesting that a major proportion of each heavy metal in the soils was mainly derived from the acidic irrigation water. The results also show that the crops grown in these soils were highly contaminated by heavy metals, particularly Cd. The concentration of Cd in the edible portions of most crops was far in excess of the limits set in China National Standards for Vegetables and Fruits and this can be attributable to the extremely high transfer rate of Cd from the soils to the crops under the cropping system adopted in the study area. < copyright > CSIRO 2005. |
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C. Lin, College of Resources and Environment, South China Agricultural University, Guangzhou 510642, China cxlin@scau.edu.cn |
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0004-9573 |
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Agricultural soils irrigated with acidic mine water: Acidity, heavy metals, and crop contamination; 2828050; Australia 29; Geobase |
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Call Number |
CBU @ c.wolke @ 17496 |
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314 |
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Author |
Guo, F.; Yu, H. |
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Title |
Hydrogeochemistry and treatment of acid mine drainage in southern China |
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Book Chapter |
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Year |
1993 |
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Proceedings of the Annual National Meeting – American Society for Surface Mining and Reclamation, vol.10 |
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277-283 |
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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 |
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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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Zamora, B.A.; Connolly, R.E. |
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The challenge of integrating diverse perspectives in reclamation |
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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 |
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Call Number |
CBU @ c.wolke @ 16744 |
Serial |
366 |
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Author |
Gong, Z.; Huang, J.; Jiang, H. |
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Title |
Study of comprehensive retrieval utilization and the treatment of acid mine wastewater |
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Journal Article |
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Year |
1996 |
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Zhongnan Gongye Daxue Xuebao = Journal of Central South University of Technology |
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27 |
Issue |
4 |
Pages |
432-435 |
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Keywords |
acid mine drainage Asia China copper Far East heavy metals metals pH pollution sulfides utilization waste water water 22, Environmental geology |
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Abstract |
Impact of precipitating on removing harmful metal ion in the acid mine wastewater with pH neutralizer and sulfide was studied. The possible way of retrieving heavy metal ion in wastewater was probed. The techniques for lime carbonate to reject iron for hydrogen sulfide to precipitate copper and for zinc-lime cream neutralization flocculation to treat, mine acid wastewater were chosen. The final water quality may reach national effluent standard; the copper content was 32% in the sulfide slag. |
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1005-9792 |
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Study of comprehensive retrieval utilization and the treatment of acid mine wastewater; 1998-066886; References: 4; 4 tables China (CHN); GeoRef; Chinese |
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Call Number |
CBU @ c.wolke @ 16650 |
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370 |
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