2 edition of Open limestone channel for treating acid mine drainage found in the catalog.
Open limestone channel for treating acid mine drainage
Paul F. Ziemkiewicz
Open limestone channels were analyzed as a simpler alternative to anoxic limestone drains for treating high acidic mine drainage. Results showed up to 100% acidity reduction on the tested sites.
|Statement||P. Ziemiewicz, J. Skousen, and R. Lovett|
|Contributions||Skousen, Jeffrey G., Lovett, Ray.|
|The Physical Object|
|Pagination||p. 36-41 :|
|Number of Pages||41|
Runoff and drainage from active and inactive mines are someof the most environmentally damaging land uses i the US. Acid Mine drainage (AMD) from mining sites across the country requires treatment because of high metal concentrations that exceed regulatory standards for safe discharge to the environment. The purpose of this study is to provide an initial, bench scale, . MINE, WATER & ENVIRONMENT. IMW A Congress. Sevilla, Spain ACID MINE DRAINAGE PREVENTION AND CONTROL OPTIONS Nural Kuyucak Golder Associates Ltd. Courtwood Crescent Ottawa, Ontario, Canada K2C 2B5 Phone:+ 1 , Fax:+ 1 e-mail: [email protected] ABSTRACT.
Table 1 shows the Shur River runoff data, accumulated in the upstream of the waste dump No (UD). Also, Table 2 shows the Shur River runoff data, accumulated in the downstream of the waste dump No. 11 (DD). Comparison the up and downstream dump No. 11 data show that the metal concentrations increase in the dump downstream. Cu, Fe, Mn and Zn concentration . The water treatment performances of two anoxic limestone drains (ALDs) were evaluated. Anoxic limestone drains are buried beds of limestone that are intended to add bicarbonate alkalinity to flow-through acid mine drainage. Both ALDs received mine water contaminated with Fe2+ ( mg L-1) and Mn ( mg L-1).
Anoxic Limestone Drain Ponds Ver2cal Flow Pond Oxic Limestone Bed Wetland Ponds Ponds Oxic Limestone Bed (drainable) Net Alkaline Net alkaline Net acid Net acid DO, Fe3+, Al all 1 mg/L DO, Fe3+, Al any > 1 mg/L High Fe2+ Ponds Repeat As Needed Mn. Acid mine drainage and coal fly ash both are the sibling products from man’s increasing demand for power. Mining of coal from coal mines generates acid mine drainage (AMD), and burning of coal for thermal power generation produces fly ash (FA). Although both are hazardous to the ecosystem and human health, reunion of them into one would reduce their toxic effect on by: 2.
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Open limestone channels, though armored, reduced more acidity in AMD (%) than the sandstone channel (2%). The results from open limestone channels were compared to. Acid Mine Drainage Treatment With Open Limestone Channels Paul F.
Ziemkiewicz David L. Brant and Jeffrey G. Skousen National Mine Land Reclamation Center and West Virginia University Abstract Acid mine drainage (AMD) is often.
Rose AW, Lourenso FJ () Evaluation of two open limestone channels for treating acid mine drainage. in Proceedings of the 17th Annual National Meeting of the American Society for Surface Mining and Reclamation, Florida, pp. –Cited by: 1. An open limestone channel (OLC) was constructed within an existing drain to treat the acidic and metal-rich drainage waters generated from an acid sulfate soil (ASS) catchment.
An open limestone channel (OLC) was constructed within an existing drain to treat the acidic and metal-rich drainage waters generated from an acid sulfate soil (ASS) catchment.
The OLC was constructed downstream of a catchment pump and it consisted of a series of ponds and limestone sections. The accumulation of sediment over the limestone, preventing contact Cited by: 9. acid (Brick ). However, the primary metal related to AMD is iron.
Combined with sulfate and/or sulfide, iron can cause real problems. Pyrite, an iron sulfide found in both coal and metal mines, has the potential to produce more acid than any other mineral.
It can produce 16 units of acid for each unit of pyrite (Brick ). v List of Figures Figure 1 (A) All Abandoned Mine Land Sites, Current AMLIS Database (B) Mine Drainage Sites Listed, Current AMLIS Database Figure 2 All Drainage sites in AMLIS Database by Year Figure 3 Non-Point Source Projects and Grants Figure 4 (A) Acidity Reduction by Open Limestone Channel Length 1.
Introduction. Acid mine drainage (AMD) is a major problem all over the world, especially where coal and gold mine activities are common. Once AMD is generated, it is difficult to control the process and the treatment also requires high cost (Aguiar et al.,Baruah and Khare,Grande et al.,Qureshi et al., ).AMD causes severe environmental impacts, Cited by: Open limestone channels, though armored, reduced more acidity in AMD (4–62%) than the sandstone channel (2%).
The results from open limestone channels were compared to an acid neutralization kinetics model that predicts the rate of acid neutralization for a specified channel size, and AMD flow and acidity concentration.
“Anoxic Limestone Drains for Acid Mine Drainage Treatment,” pp. –66 in Acid Mine Drainage: Control and Treatment, J.
Skousen, and P. Ziemkiewicz, eds. Morgantown, WV: West Virginia University and the National Mine Land Reclamation Center. Skousen, J. Overview of Passive Systems for Treating Acid Mine Drainage.
Santofimia, E. Lopez-PamoPerformance of an open limestone channel for treating a stream affected by acid rock drainage (Len, Spain) Environ Sci Cited by: 4.
Steve Fearn dips his hand into drainage from the Elk Tunnel mine, where the BLM has built a limestone channel to treat acid mine drainage. Andrew Cullen Abandoned mine sites dot the hills outside. A Comparative Study of Anoxic Limestone Drain and Open Limestone Channel for Acidic Raw Water Treatment Faradiella Mohd Kusin, Azmi Aris and Amiza Shayeeda Ahmad Misbah Abstract - This study presents the performance of an anoxic limestone drain in comparison to an open limestone channel for treating acidic water.
An open limestone channel (OLC) was constructed within an existing drain to treat the acidic and metal-rich drainage waters generated from an acid sulfate soil (ASS) catchment. The OLC was constructed downstream of a catchment pump and it consisted of a series of ponds and limestone by: 9.
Studies on Limestone TreatmeM&f of Acid Mine Drainage Optimization and Development of Improved Chemical Techniques for the Treatment of Coal Mine Drainage by Bituminous Coal Research, Inc.
Hochberg Road Monroeville, Pennsylvania for the COMMONWEALTH OP PENNSYLVANIA DEPARTMENT OF MINES AND MINERAL INDUSTRIES and THE.
Wetlands: Mechanisms For Treating Acid Mine Drainage David C. Ditsch University of Kentucky, @ Anastasios D. Karathanasis University of Kentucky, [email protected] Right click to open a feedback form in a new tab to let us know how this document benefits you. Follow this and additional works at: Higher solids content and more dense sludges resulted from limestone treat- ment of acid mine drainage at pH levels in excess of pHthan with lime treatment.
Recommendations 1. Further studies should be conducted to determine adequate mixing of limestone in high volume delivery treatment of acid mine drainage. Acid Mine Drainage Research Acid mine drainage (AMD) has been the subject of intensive research since the 's.
Research efforts have proceeded recently through the Acid Drainage Technology Initiative. The major areas of research on AMD are Prediction of AMD and Prevention/Mitigation.
The following is an overview of information on some major File Size: 89KB. assumed that armored limestone was 20% as effective as fresh limestone (Pearson and McDonnell (). In general, the first-order model under-predicted acid neutralization in the open limestone channels they investigated.
Our objective was to develop a model for the neutralization rate of acid mine drainage by Size: 48KB. Open Limestone Channels.
In coal mining regions, limestone is prevalent and therefore is the least expensive buffer material. This led to construction of open limestone channels to pre-treat AMD effluent. Open limestone channels raise the pH of effluent by the reaction of calcite with carbonic acid: CaCO.
3 + H. 3 → Ca. 2+ + 2HCO. File Size: KB. Acid mine drainage can be released anywhere on the mine where sulfides are exposed to air and water — including waste rock piles, tailings, open pits, underground tunnels, and leach pads. Acid drainage is often marked by “yellow boy,” an orange-yellow substance (visible in the photo on this page) that occurs when the pH of acidic mine.Acid mine drainage, acid and metalliferous drainage (AMD), or acid rock drainage (ARD) is the outflow of acidic water from metal mines or coal mines.
Acid rock drainage occurs naturally within some environments as part of the rock weathering process but is exacerbated by large-scale earth disturbances characteristic of mining and other large construction activities, usually.
In a nutshell, acid mine drainage is a form of water pollution that happens when rain, runoff, or streams come in contact with rock that is rich in sulfur. As a result, the water becomes very acidic and damages downstream aquatic ecosystems. In some regions, it is the most common form of stream and river : Frederic Beaudry.