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  • Coal mine water Canadian Mining JournalCanadian Mining

    Of primary concern is small (but significant) quantities of selenium that can be released from coal mines into groundwater or surface waters when precipitation percolates through waste rock or runs through mining operations. Selenium is sometimes referred to as the "essential toxin."

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  • Selenium and Other Trace Elements in Aquatic Insects in

    2006130&ensp·&enspCoal has been mined in the Rocky Mountains of Alberta and British Columbia since the late 19th century (Ryan and Dittrick 2000 Alberta Energy 2005).The many small, underground mines that predominated in the early years have been replaced by fewer, large, openpit mines

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  • Inside Teck's Selenium Treatment Plant BCBusiness

    201363&ensp·&enspIn small doses, selenium is critical for life, but it's deadly in high concentrations—and a big problem for watersheds with coal mines in their midst. Selenium, a naturally occurring element, has been a hot topic lately—and not for good reasons.

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  • Koocanusa Exceeds Selenium Standard Elk Valley Coal News

    20181129&ensp·&enspSelenium is a naturally occurring element in sedimentary rocks and coal and can be toxic to fish at elevated levels, which are exacerbated by mining operations and the accumulation of waste rock, according to the EPA.

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  • Toxic Metals Removed from Wastewater at Canadian Coal

    2014419&ensp·&enspThe coal mine has been operating since 2006, and new regulations prompted Anglo American to build a new wastewater treatment plant to remove nitrate and selenium in the wastewater. Currently under construction, the new facility is turnkey, providing a

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  • Category Archive for "Selenium" Coal Tattoo

    A West ia bill passed in 2009 ordered a study of selenium's effect on aquatic life in West ia to be completed by 2010. It also ordered coal mines to have selenium monitoring systems in

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  • Coal Mining Industry Influences EPA's Selenium Pollution

    A recent victory in a lawsuit over illegal selenium discharges from a ia surface mining operation indies that selenium pollution is a widespread problem at mountaintop removal mines

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  • Selenium Removal Technologies: A Review Water Online

    2016116&ensp·&enspThe 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, and R&D to improve selenium management (Missoulian, 2013).

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  • SELENIUM MONITORING AND MANAGEMENT – NEW

    2012517&ensp·&enspSelenium is a contaminant of particular concern for coal, phosphate, uranium and some precious and base metal mines. Regulators require reasonable assurances that environmental risks will be

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  • CiteSeerX — SELENIUM FROM COAL MINING IN THE ELK

    2018818&ensp·&enspSelenium concentrations downstream of the five coal mines have increased in some areas. However, the same magnitude of increases has not occurred in lotic (flowing water) fauna, and Se concentrations in fish from lotic areas have not increased from 1996 to 2003.

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  • Treatment of SeleniumContaining Coal Mining

    201261&ensp·&enspTreatment of SeleniumContaining Coal Mining Wastewaters 5 Figure 2: Redox Profile of Biological Reduction From a practical standpoint, these relationships are critical. The presence of either oxygen or nitrate will limit selenium reduction. Even in anoxic

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  • Coal Mine's Selenium Discharge Violates CWA, Judge Says

    2013724&ensp·&enspiabased mining firm A&G Coal Corp. is liable for Clean Water Act violations stemming from a selenium discharge from one of its surface mines in the state, even though it has permits to run

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  • Selenium transformation in coal mine spoils (Technical

    20181123&ensp·&enspThe objective of this part of the study is to investigate the oxidationreduction (redox) environment that favor the release of selenium from coal mine spoils. It is anticipated that the study will help answer critical questions as to the form, solubility, and mobility of selenium from the spoil

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  • Selenium from coal mining in the Elk River Valley UBC

    Selenium concentrations downstream of the five coal mines have increased in some areas. However, the same magnitude of increases has not occurred in lotic (flowing water) fauna, and Se concentrations in fish from lotic areas have not increased from 1996 to 2003.

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  • Environmental impact assessment and selenium

    199161&ensp·&enspEnvironmental impact assessment and selenium transformation in coal mine spoils. Seventh quarterly report.. [University of Oklahoma. School of Civil Engineering and Environmental Science. This quarterly report addresses the continued field investigation of a selected coal mining site in Oklahoma. Table 1 (appendix) portrays all the data

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  • Selenium in coal: A review ScienceDirect

    The "coal affinity" of Se is like that for Ge, As, and S. 2. Both organic (Se org) and inorganic selenium (Se min) may exist in coal. Besides, Se can occur not only as a chemicalbound form, but also in sorbed (acid leachable) selenate form in the oxydized coals.

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  • Canada suppressing data on coal mine pollution, say U.S

    Frustrated U.S. representatives on a commission tasked with protecting the quality of water flowing across the Canada/U.S. border have gone public with claims that Canadian commissioners are refusing to accept scientific data that shows an increase in selenium pollution from B.C.'s Elk Valley coal mines.

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  • The geochemistry of selenium associated with coal waste in

    200385&ensp·&enspAbstract. Selenium (Se) concentrations more than 12 times greater than the provincial freshwater quality guideline (2 µg/L) were detected in the Elk River downstream from the five openpit coal mines in southeastern British Columbia's Elk River Valley.

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  • Coal Mine Planning and Selenium in British Columbia

    2017329&ensp·&enspMine Effects on Selenium • Primary driver for effects on selenium is from unsaturated spoils • Loadings from exposed, open pit walls are typically much lower than spoils • Saturated spoils and coal refuse (tailings and CCR) Se loadings are typically negligible

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  • Mines blamed for high selenium levels in B.C.'s Elk River

    2013726&ensp·&enspThe study found the selenium levels at five sites in the Elk River Basin downsteam from the coal mines ranged from 10 ug/L to 4 ug/L, compared with levels of less than 1 ug/L upstream of the coal

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  • Will new federal coal mining regulations stop Elk Valley

    Selenium pollution coming from the Elk Valley coal mines is a major problem and polluted water is harming fish as far downstream as Koocanusa Reservoir.So why isn't government regulating selenium levels to protect fish, birds and all kinds of life that depend on clean water?

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  • Passive Treatment Strategies for Selenium at Coal Mines

    2018328&ensp·&enspresidual carbon (e.g., coal), in conjunction with relativelylong water residence times, can promote the development of suboxic conditions. • Under conditions of suboxia, Se is host to a suite of microbiallymediated processes that favour the removal of dissolved Se from solution. Overview

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  • The leaching behavior of arsenic, selenium and other

    2017413&ensp·&enspTHE LEACHING BEHAVIOR OF ARSENIC, SELENIUM AND OTHER TRACE ELEMENTS IN COAL FLY ASH by TIAN WANG A DISSERTATION Presented to the Faculty of the Graduate School of the UNIVERSITY OF MISSOURIROLLA In Partial Fulfillment of the Requirements for the Degree DOCTOR OF PHILOSOPHY in CIVIL ENGINEERING 2007

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  • Selenium: Mountaintop Removal Coal Mining's Toxic Legacy

    The discharges from many mines across Appalachia regularly exceed these limits, endangering aquatic communities. As a result of advocacy by the Sierra Club and other citizen groups, state regulators began incorporating limits on selenium in Clean Water Act discharge permits for coal mines.

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  • Hobet Coal Mine Wikipedia

    20181118&ensp·&enspThe Hobet mine was incorporated into Arch Coal in 1997, along with several other mines, following booming coal demand. The mine was sold two more times: to Magnum Coal in 2005 and to Patriot Coal in 2008. Patriot Coal subsequently went bankrupt in 2015, and the Hobet site was passed into a iabased conservation firm who continued to mine

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  • Regional scale selenium loading associated with surface

    The Appalachian coal industry has been successful in developing technologies to identify, handle, treat and isolate potentially acidforming overburden materials at coal mines in the region.

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  • EFFECTS OF SELENIUM AND OTHER SURFACE COAL MINE

    2015113&ensp·&enspPhysical and chemical influences downstream of surface coal mines, including selenium (Se) release, water quality shifts, and habitat alterations can affect aquatic organisms. To evaluate these influences at the community level of organization, fish and macroinvertebrates were studied in mineaffected and reference streams. Se can be toxic

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  • US to Crack Down on Pollution from BC Coal Mines

    2018122&ensp·&enspSelenium is released from waste rock piled at Teck's largescale openpit coal mines, where rainfall and snowmelt draw it into the Elk and Fording Rivers. Selenium can be harmful to biological organisms at even small amounts and causes deformities in fish and birds.

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  • Hobet Coal Mine Wikipedia

    20181118&ensp·&enspThe Hobet mine was incorporated into Arch Coal in 1997, along with several other mines, following booming coal demand. The mine was sold two more times: to Magnum Coal in 2005 and to Patriot Coal in 2008. Patriot Coal subsequently went bankrupt in 2015, and the Hobet site was passed into a iabased conservation firm who continued to mine

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  • Coal mining and selenium Werner Antweiler

    Selenium is a naturally occurring element (chemical symbol: Se). Coal is a major geologic source of selenium. Natural processes distribute selenium and transform it into different species. In addition to its pure form, selenium is usually found in its oxydized forms selenate and selenite. Selenium species in water can exist in dissolved and

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  • Selenium SourceWatch

    2018828&ensp·&enspSelenium is a metallic gray to black mineral element present in most rocks and soils. In nature it combines with sulfide or with silver, copper, lead, and nickel minerals. Selenium is found in coal waste and sewage sludge.

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  • U.S. Looks to Crack Down on Pollution of Montana River

    20181127&ensp·&enspSelenium is released from waste rock piled at Teck's largescale openpit coal mines, where rainfall and snowmelt draw it into the Elk and Fording Rivers. Selenium can be harmful to biological organisms at even small amounts and causes deformities in fish and birds.

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  • The geochemistry of selenium associated with coal waste

    River downstream from the five openpit coal mines in southeastern British Columbia's Elk River Valley. To identify possible sources of Se to the Elk River, samples from the coalbearing Mist

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  • Recommendations for PreMine Assessment of Selenium

    201231&ensp·&enspselenium at prospective coal mines. It is essential to determine selenium concentrations of coal and overburden that are to be moved because once these materials are exposed to air and precipitation they can leach substantial quantities of selenium (e.g., Davis and Boegly 1981,

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  • No new Elk Valley coal mines until selenium impact

    No new coal mines will be approved in the Elk Valley until the lead company in the region, Teck, develops a valleywide plan to manage the cumulative effects of selenium concentrations in the Elk River, B.C. Environment Minister Terry Lake said Thursday.

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  • Regional scale selenium loading associated with surface

    Concentrations of Se in streams draining surface coal mines in Appalachia nearly always exceed locally set management targets for Se concentrations (Palmer et al., 2010). These increases in Se and other solute concentrations have been shown to have negative impacts on biodiversity (Pond et al., 2008).

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

    2018512&ensp·&enspIt is of concern in B.C. because selenium is released into the environment by coal mining and it has already been detected in the Elk River in the southeast corner of the province, and in the

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  • Alpha settlement over US selenium lawsuit in

    In addition, the Sierra Club and other environmental groups have sued several eastern US coal producers during the past several years over allegedly unsafe levels of selenium

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