reducing iron content in coal mine discharge

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ESTIMATING IRON AND ALUMINUM CONTENT OF ACID MINE DISCHARGE FROM A NORTH-CENTRAL PENNSYLVANIA COAL …

ESTIMATING IRON AND ALUMINUM CONTENT OF ACID MINE DISCHARGE FROM A NORTH-CENTRAL PENNSYLVANIA COAL FIELD BY USE OF ACIDITY TITRATION CURVES By Arthur N. Ott U.S. GEOLOGICAL SURVEY Water-Resources 1986

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(PDF) Iron Removal by a Passive System Treating …

The Marchand passive treatment system was constructed in 2006 for a 6,000L/min discharge from an abandoned underground bituminous coal mine located in western Pennsylvania, USA. a …

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Wastewater Characteristics, Management and Reuse in Mining …

14 and 7.0 is termed "neutral pH." An important consideration with high sulfur content coal is the reaction of sulfur, oxygen and water and in the presence of bacteria forms sulfuric acid and lowers the pH. A pH of below 6.5 may be corrosive to plumbing

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(PDF) In-line aeration and treatment of acid mine …

Field tests of this system as an aeration process involved near-neutral mine water with high ferrous iron (Fe/sup 2 +/) concentrations which were causing discharge pollution problems.

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Seasonal blooms of neutrophilic Betaproteobacterial …

Microbial ecology of iron-rich sediments at an abandoned circumneutral coal mine drainage site in the South Wales Coalfield. The Ynysarwed mine adit (51 42′05.9''N, 3 43′33.1''W) (Fig. 1) is situated in the Lower Neath Valley and during operation mainly worked the notoriously pyritic Rhondda No. 2 coal seam of the Upper Coal Measures.

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How far off is the steel industry from decarbonising?

 · The Cumbria mine will see five million tonnes of coal removed per year from beneath the Irish Sea for steelmaking – an industry where decarbonisation is particularly difficult. Steel is an alloy that consists mostly of iron.

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Long-Term Changes in Water Chemistry as a Result of Mine Flooding in Closed Mines of the Pittsburgh Coal …

Pittsburgh coal basin (Pennsylvania, USA). The Montour mine is a 5650-hectare below-drainage coal mine of maximum 260 metres depth. Montour was closed in 1980 and flooded to within 38 metres of land surface within 4.8 years. Pumping averaging 210 L/s

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(PDF) Remediation of coal-mine drainage by a sulfate …

One of these passive technologies involves a SO 4 -reducing bioreactor and is similar to a successive alkalinity producing system (SAPS), which has been widely used in remediation of coal-mine drainage in Appalachia (Kepler and McCleary, 1994;Watzlaf, 1997).

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Mining for iron oxides in coal mine sludge | EARTH Magazine

During the first year of operation, the Marchand treatment reduced iron concentrations in Sewickley Creek from an average of 74 milligrams per liter to less than 1 milligram per liter, which means the stream now meets the Pennsylvania Department of Environmental Protection''s water quality standards.

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Iron mining in the United States

Iron mining in the United States produced 48 million metric tons of iron ore in 2019. Iron ore was the third-highest-value metal mined in the United States, after gold and copper. Iron ore was mined from nine active mines and three reclamation operations in Michigan, Minnesota, and Utah..

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Reducing iron content in coal mine discharge – Grinding …

Limestone Drains to Increase pH and Remove Dissolved Metals from an Acidic CoalMine Discharge in Effects of iron effectively reducing the contact between » Learn More Senate bill would encourage use of coal mine water to frack A bill that would encourage

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REMOVAL OF MANGANESE FROM ACID MINE DRAINAGE

manganese is stable under reducing conditions (typical mine drainage conditions) up to pH 10 or so, consistent with conventional wisdom. Raising the pH under reducing conditions produces large the hydroxide. Another aspect of an Eh‐pH diagram is the lowered

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Investigation of pyrite oxidation and acid mine drainage …

Acid mine drainage (AMD) pollution is considered to be the most serious water pollution problem in mining areas. AMD containing iron sulfates and other components can affect the receiving water bodies. Pyrite oxidation and AMD generation can be considered as important processes that may take place in the wastes produced by coal mining and coal washing operations in the Golestan province ...

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Estimating iron and aluminum content of acid mine …

Estimating iron and aluminum content of acid mine discharge from a north-central Pennsylvania coal field by use of acidity titration curves Series title Water-Resources Investigations Report Series number 84-4335 DOI 10.3133/wri844335 Year Published 1986 ...

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Acid Mine Drainage

Acid mine drainage (AMD), which can have pH values as low as –3.6 (Nordstrom et al., 2000), can contain high concentrations of many solutes, including iron and arsenic (see Chapter 11.5). The highest reported arsenic concentration, 850 000 μg l −1, was found in an acid seep in Richmond mine, California ( Nordstrom and Alpers, 1999 ).

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Iron pollution from old coal mine shaft turns River Wear …

 · The Coal Authority has records of the discharge, which is coloured by iron reaching the surface and oxidising, dating back to at least 1986. The issue is widespread across the ...

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Acid mine drainage

Lime neutralization. By far, the most commonly used commercial process for treating acid mine drainage is lime ( CaO) precipitation in a high-density sludge (HDS) process. In this application, a slurry of lime is dispersed into a tank containing acid mine drainage and recycled sludge to increase water pH to about 9.

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Performance and microbial community dynamics of a …

Performance and microbial community dynamics of a sulfate-reducing bioreactor treating coal generated acid mine drainage. Burns AS(1), Pugh CW, Segid YT, Behum PT, Lefticariu L, Bender KS. Author information: (1)Department of Microbiology, Southern Illinois University, 1125 Lincoln Drive, Mail Code 6508, Carbondale, IL 62901, USA.

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Dewatering of Mine Drainage Sludge

Sludge Recirculation (39) Bituminous Coal Research briefly attempted sludge recirculation with two natural mine waters and found that recirculated sludge aided reducing the iron content in the raw water to a satisfactory level.

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Coal and Coal Mine Drainage

Coal and coal mine drainage James F. Boyer, Bituminous Coal Research, Inc., Pittsburgh, Pa. ia E. Gleason, Bituminous Coal ... the possibility of reducing the iron content of the discharge from a deep mine shaft by aerating and treating the water in the ...

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Coal and Coal Mine Drainage

Energy content, composition, and associated water chemistry of wastes in the coal-preparation plant of the Green Valley-Wabash Mine, Vigo County, Ind. The leaching and reclamation of low-grade mineralized stockpiles.

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Effects of Abandoned Coal-Mine Drainage on Streamflow and …

Effects of Abandoned Coal-Mine Drainage on Streamflow and Water Quality in the Mahanoy Creek Basin, Schuylkill, Columbia, and Northumberland Counties, Pennsylvania, 2001 by Charles A. Cravotta III U.S. Department of the Interior U.S. Geological Survey In

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John Sabraw is Turning Acid Mine Pollution Into Paint | Time

 · According to Shively, the Truetown Discharge now sends more than 1,000 tons of granular iron oxide into Sunday Creek each year. Commercial ventures have harvested iron oxide from acid mine ...

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Opinion | Precluding coal redux in iron ore mining

Opinion | Precluding coal redux in iron ore mining As things stand, much of the states'' actual auction gains will depend on how the Indian Bureau of Mines prices iron ore and how these prices ...

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Coal and Coal Mine Drainage

iron in the mine. The basic materials studied included lime, lime slurry, and 50 percent sodium hydroxide solution. Re sults of analyses of the mine discharge indicate that less than 50 percent of the iron was removed. A combination biological-limestone treat

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NIOSHTIC-2 Publications Search

Objective: Determine the effectiveness of remining operations in reducing contaminant load (acidity, iron, and sulfate) of discharges emanating from abandoned surface and underground coal mines. Background: Until the implementation of remining initiatives, most States had regulations that held the operator remining an abandoned site responsible for preexisting acid mine drainage (AMD) discharges.

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Remediation of coal-mine drainage by a sulfate-reducing …

 · This study reports changes in coal-mine drainage constituent concentrations through an anaerobic SO 4 -reducing bioreactor monitored over a 3-a period. The purpose of the study was to identify and monitor over time the biogeochemical mechanisms that control the attenuation of toxic compounds in the mine drainage.

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Comprehensive review on wastewater discharged from …

For example, different coal mine subsidiaries in India release 0.07–0.41 Mm 3 of MW every day and the total amount of water released per day is 1.24 Mm 3 (Debnath 2013). The mine water is characterized by dissolved solids, hardness, alkalinity, calcium, magnesium, iron and manganese ( Table 1 ), at concentrations which are comparatively higher than the standard drinking water limits ( BIS ...

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Iron Removal by a Passive System Treating Alkaline Coal Mine …

The discharge and treatment system are located on a 8 ha (20 acre) flat site that formerly contained railroad tracks, coke ovens, coal refuse, a steam plant, and mine buildings. The site location is 40 001500.50N, 99 45052.00W. The property was purchased by

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