coal mining selenium

Linking Selenium Sources to Ecosystems: Mining

Selenium release to the environment during coal burning for power generation can be direct during combustion or indirect from disposal of solid combustion waste (i.e., fly ash). Large-scale land disturbance is associated with mountaintop coal mining and waste

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Selenium from coal mining in the Elk River Valley - UBC ...

Coal mining in the Elk River Valley, B.C. enhances natural release of selenium (Se), resulting in elevated concentrations of selenium downstream of the mines. Studies to determine the extent and significance of Se in Valley waters began in 1996. Selenium concentrations downstream of the five coal mines have increased in some areas. However, the same magnitude of increases has not occurred in ...

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EFFECTS OF SELENIUM AND OTHER SURFACE COAL MINE

surface mining accounts for approximately 40% of the over 8 billion tonnes of annual global coal production (World Coal Institute 2005). Surface mining is a process by which shallow coal seams are accessed through the removal and relocation of overburden rock using explosives and large mechanical equipment. Canada’s largest coal producers are

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Coal mine selenium found in bighorn herds in Alberta ...

May 11, 2021  He was investigating selenium, a naturally occurring element associated with coal mines that is healthy in small doses but toxic in excess. Kneteman's study looked at what levels of selenium were normal for animals such as bighorns, deer, elk and caribou by considering 85 different herds from across North America.

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Selenium from coal mining in the Elk River Valley - UBC ...

Coal mining in the Elk River Valley, B.C. enhances natural release of selenium (Se), resulting in elevated concentrations of selenium downstream of the mines. Studies to determine the extent and significance of Se in Valley waters began in 1996. Selenium concentrations downstream of the five coal mines have increased in some areas. However, the same magnitude of increases has not occurred in ...

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Decrease in selenium status in relation to coal dust ...

Selenium (Se) plasma levels were studied in 222 coal miners to assess whether selenium is decreased in relation to coal dust exposure, taking age, alcohol, and tobacco consumption into account. Selenium levels decreased significantly with age and current

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EFFECTS OF SELENIUM AND OTHER SURFACE COAL MINE

surface mining accounts for approximately 40% of the over 8 billion tonnes of annual global coal production (World Coal Institute 2005). Surface mining is a process by which shallow coal seams are accessed through the removal and relocation of overburden rock using explosives and large mechanical equipment. Canada’s largest coal producers are

More

Selenium solutions for mining, power plants, oil refining

Selenium is a naturally-occurring element that is present in certain rocks, soil, coal, and oil. Runoff, wastewater and emissions from mining operations, agricultural activities, power generation, and oil refining can mobilize and redistribute selenium throughout the environment. Selenium is used industrially as a glass additive and as a ...

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Solving the selenium problem - CIM

Nov 04, 2016  Selenium is a slippery, multi-headed problem for mining. For starters, any technology has to treat large volumes of water to remove tiny traces of selenium. Any given wastewater can contain various selenium species with different solubility, toxicity and oxidization states that react differently to treatments and water temperature, and compete ...

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Selenium from open-pit coal mining may pose downstream ...

Apr 08, 2021  In studying the impacts of open-pit coal mining in B.C.’s Elk Valley, Lars Sander-Green has seen how selenium leaching from four metallurgical coal mines contaminated the local drinking water supply and devastated fish populations before flowing south into Montana and Idaho with levels of selenium significantly higher than state regulations allow.

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Mining Regulations and Elk River Selenium Pollution - Elk ...

The bad news: the new regulations have some serious loopholes — and they won’t reduce selenium pollution in the Elk Valley until 2025 at the earliest. We need strong federal regulation for selenium pollution from coal mines as soon as possible, because the long-term selenium problem in the Elk Valley is getting worse every day.

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Alberta to study selenium in wake of coal controversy ...

Jul 02, 2021  The selenium management review will complement the work of the committee, said Nixon. It provides “an avenue for Albertans who are participating in the coal consultation process to actually ...

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U.S. EPA releases selenium limits for lake downstream of ...

Mar 08, 2021  Ninety-five per cent of the selenium entering Lake Koocanusa comes from the Elk River, which has been contaminated by current and historic coal mining in the Elk Valley, according to a September 2020 presentation by the Montana environment department.. Experts have long warned about negative impacts to fish from selenium in Elk Valley waterways where selenium levels as high as

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Coal mining, selenium, and the costs of toxic pollutants ...

Jan 20, 2014  Selenium is a naturally occurring chemical element, but it can be harmful in even very tiny amounts. It is of concern in B.C. because selenium is released into the environment by coal mining

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Coal mine selenium in bighorn sheep known to Alberta ...

May 11, 2021  Referring to unpublished government data, that plan says: “High selenium levels in blood samples from bighorns feeding in reclamation areas associated with a coal

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Coal Mining Industry Influences EPA’s Selenium Pollution ...

Jul 26, 2013  Selenium is of particular concern in Kentucky and other Central Appalachian states because it is often released into streams through mountaintop removal coal mining and is toxic to aquatic life at very low levels. Even though many high-selenium coal seams are mined in Kentucky, companies typically claim there will be no selenium discharge when ...

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From Canadian Coal Mines, Toxic Pollution That Knows No ...

Apr 01, 2019  The destructive consequences of selenium pollution are well documented in North America. In the 1970s, agricultural runoff carried high selenium loads into a reservoir in California’s San Joaquin Valley, causing deformities in fish, reptiles, and birds. In the early 2000s, a vast mountaintop removal mining operation in West Virginia wrecked ecosystems in the Mud River.

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Two Alberta First Nations want court to allow appeal of ...

Jul 23, 2021  But the panel concluded the mine posed too great an environmental risk to the headwaters of the Oldman River from selenium, an element commonly found in coal

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Bacterial reduction of selenium in coal mine tailings pond ...

Sediment from a storage facility for coal tailings solids was assessed for its capacity to reduce selenium (Se) by native bacterial community. One Se(6+)-reducing bacterium Enterobacter hormaechei (Tar11) and four Se(4+)-reducing bacteria, Klebsiella pneumoniae (Tar1), Pseudomonas fluorescens (Tar3)

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New Options for Treating Selenium in the Coal Industry

selenium over a 10-month period in treating mining leachate at a West Virginia mining site. Similar experience at a Canadian mine now confirms these results – in the presence of high nitrate levels. Our FBR has been used in similar reductive applications for more than 10 years for applications such as perchlorate, where low

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Decrease in selenium status in relation to coal dust ...

Selenium (Se) plasma levels were studied in 222 coal miners to assess whether selenium is decreased in relation to coal dust exposure, taking age, alcohol, and tobacco consumption into account. Selenium levels decreased significantly with age and current

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Treatment of Selenium-Containing Coal Mining Wastewater ...

In the coal mining industry today, selenium, in its many forms, is gaining attention. New regulations covering selenium discharge are either in place or being developed. It has been said that handling selenium wastes will increasingly become a limiting factor on the ability of the coal mining industry to grow. While a number of physical/chemical

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Selenium: Mountaintop Removal Coal Mining's Toxic Legacy ...

Apr 16, 2014  Because valley fills remain in place even after all mining is complete, selenium treatment liability is a problem not only for active coal mines, but also for the owners of so-called "reclaimed" mines. The Sierra Club and its allies have now begun filing lawsuits seeking to compel corporate landowners -- which profited from leasing their land ...

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Alberta to study selenium in wake of coal controversy ...

Jul 02, 2021  The selenium management review will complement the work of the committee, said Nixon. It provides “an avenue for Albertans who are participating in the coal consultation process to actually ...

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Coal Mining Industry Influences EPA’s Selenium Pollution ...

Jul 26, 2013  Selenium is of particular concern in Kentucky and other Central Appalachian states because it is often released into streams through mountaintop removal coal mining and is toxic to aquatic life at very low levels. Even though many high-selenium coal seams are mined in Kentucky, companies typically claim there will be no selenium discharge when ...

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Selenium Removal Technologies A Review - Water Online

Jan 15, 2016  In British Columbia’s Elk River Valley coal mining operations, Teck Resources Ltd. is actively searching for methods to control and treat selenium discharges. The company, which currently operates five coal mines in the region, is in the midst of investing $600 million on water diversion and treatment facilities, aquatic monitoring programs ...

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Coal miner hit with $60M fine for selenium damage Local ...

Canadian investigators found the mining company discharged hazardous amounts of selenium and calcite into the Fording River from two coal mines in the Elk Valley, just north of Eureka, Montana.

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Selenium – Appalachian Voices

TAGS: insects mountaintop removal coal mining Selenium Water Pollution. Advocacy groups sue multiple coal facilities for water violations. By August 6, 2019. CONTACTS: Erin Savage, Appalachian Voices Central Appalachian Program Manager, [email protected], 206-769-8286 August 7, 2019 Charleston, W.Va.

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New state selenium rule could limit Canadian coal mining ...

Coal miner hit with $60M fine for selenium damage Mar 28, 2021 Canadian coal company Teck Resources has paid a $60 million fine after pleading guilty to pollution discharges that have killed ...

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Two Alberta First Nations want court to allow appeal of ...

Jul 23, 2021  But the panel concluded the mine posed too great an environmental risk to the headwaters of the Oldman River from selenium, an element commonly found in coal

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Regional scale selenium loading associated with surface ...

Nov 01, 2015  Selenium (Se) concentrations in surface water downstream of surface mining operations have been reported at levels in excess of water quality guidelines for the protection of wildlife. Previous research in surface mining environments has focused on downstream water quality impacts, yet little is known about the fundamental controls on Se loading.

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Two Alberta First Nations want court to allow appeal of ...

1 天前  But the panel concluded the mine posed too great an environmental risk to the headwaters of the Oldman River from selenium, an element commonly found in coal mines that, in large doses, is toxic to fish. The panel cast doubt on Benga’s promises to capture up to 98 per cent of selenium released.

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