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chromite mining water pollution

chromite mining water pollution

Chromite mining pollution, environmental impact,

2020-9-24  Dewatering of open pits during the rainy season to enable continuous mining activities may also heavily contaminate nearby places or water bodies into which the excess water is discarded. The chromite mining

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Potential Toxic Effects of Chromium, Chromite Mining

2019-10-11  Chromite ore mining and concentration produces overburden and waste rock, dust, tailings and tailings water. Ferrochrome production creates air pollution, dust, slag (waste produced during ferrochrome separation from other ore elements) and process water. These waste materials have the potential to be contaminated with chromium and other heavy metals and chemicals of concern.

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REPORT ON ENVIRONMENTAL ISSUES OF CHROMITE

2012-9-17  Opencast chromite mining generate huge volumes of seepage water. Eventhough chromium in chromite is in the trivalent state, some hexavalent Cr(VI) is always formed due to certain complex reactions. If Cr(VI) containing mine drainage water is released untreated, can severely contaminate the nearby water bodies.

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Biochars evaluation for chromium pollution

2020-7-2  The chromite mining sites and activities in Sukinda generate a huge amount of waste rocks as overburden along with wastewater, which contaminates the surrounding environment (primarily soil and water) leading to pollution. In Sukinda mining area, around 7.6 million tons of solid waste in the form of rejected minerals, overburden material/waste rock, and sub-grade ore cause environmental

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Environmental Scenario of Chromite Mining at Sukinda ...

2013-11-13  Hexavalent chromium contamination has generally been assumed to be anthropogenic, since it is used in a number of industrial applications, including mining, electroplating, tanning, industrial water cooling and petroleum refining (Das and Mishra 2008). Cr+6 is extremely toxic and is considered by the World Health Organisation (WHO) and United States Environmental Protection Agency (USEPA)

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Chromite Mining in Sukinda Valley in Odisha

Extensive mining of chromite in the area since several areas poses serious threats to the environment through pollution of toxic hexavalent chromium in soil and water bodies.

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Chromite - ScienceDirect

2016-1-1  Mishra and Sahu (2013) reported that the environmental impacts of chromite mining in Sukinda Valley are caused by the presence of hexavalent Cr in mine drainage water, dust generation, overburden generation, and loss of biodiversity and forest. Open cast chromite mining generates a large quantity of overburden (Mishra and Sahu, 2013). If overburden is not protected or treated properly, the runoff from the overburden can pollute

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(PDF) An overview of chromite mining in Sukinda

Extensive mining of chromite in the area since several areas poses serious threats to the environment through pollution of toxic hexavalent chromium in soil and water bodies.[ii] Water naturally occurring and discharged from mine quarries Purged - Preeti Tej Singh due to excavation is also invariably contaminated with Cr(VI) and other heavy metal ions which are usually discharged into the

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Case Study: Chromite mining and processing

Chromium mining and processing In nature, chromium is found as chromite ore, composed of elemental iron, oxygen and chromium (FeOCr 2 O 3). 1,2 heavily in about a 700 m vicinity around the Countries with commercially significant chromite mines include Russia, South Africa, Zimbabwe, Turkey, the Philippines and India.2 Chromite ore is initially

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Mining and Water Pollution — Safe Drinking Water

2016-12-17  This kind of pollution occurs when chemical agents (such as cyanide or sulphuric acid used by mining companies to separate the target mineral from the ore) spill, leak, or leach from the mine site into nearby water bodies. These chemicals can be highly toxic to humans and wildlife. 4.

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Occurrence and Evaluation of Chromium Reducing

2014-6-19  Chromium pollution due to leaching and weathering of chromite mine overburden in mine seepage water is a serious environmental problem. In an attempt to explore the indigenous chromate resistant and reducing bacteria from chromite mine quarry seepage, 145 aerobic, heterotrophic bacteria were isolated from 14 mine seepage samples derived from chromite mines of Sukinda valley and

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Occupational health assessment of chromite toxicity

2011-1-1  According to Odisha State Pollution Control Board Analysis report of 2004-05, the hexavalent chromium concentration in overburden is varied in the range of 12-311 mg/kg. About 7000 people are directly employed by chromite mines while that depends on Brahmani river for water and sustenance is around 2.6 million.

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Occurrence and Evaluation of Chromium Reducing

2013-12-24  Chromium pollution due to leaching and weathering of chromite mine overburden in mine seepage water is a serious environmental problem. In an attempt to explore the indigenous chromate resistant and reducing bacteria from chromite mine quarry seepage, 145 aerobic, heterotrophic bacteria were isolated from 14 mine

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Environmental Scenario of Chromite Mining at Sukinda ...

2013-11-13  The South Kaliapani chromite mining area alone contributes about 97% of the total chromite reserve of the state (IBM, 2010).The chromite ore belt at Sukinda is spread over an area of approximately 200 sq. km. in Jajpur district and is well-known chromite hub in the world (Das et al., 2010). Chromite, the only economic ore of

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Heavy metal contamination, physico-chemical and

2013-3-11  chromite deposits in the county [2]. Extensive mining of chromite in this area in the past several years poses serious threat to the environment through pollution of toxic hexavalent chromium in soil and water bodies. As a result of heavy mining, a large volume of over burdens (OB), comprising of chromite ores and waste rock

Get Price

Case Study: Chromite mining and processing

Chromium mining and processing In nature, chromium is found as chromite ore, composed of elemental iron, oxygen and chromium (FeOCr 2 O 3). 1,2 heavily in about a 700 m vicinity around the Countries with commercially significant chromite mines include Russia, South Africa, Zimbabwe, Turkey, the Philippines and India.2 Chromite ore is initially

Get Price

Chromite mining in Salcedo and killing of activist ...

Chromite mining in Salcedo is composed of a network of several legal and illegal small-scale miners, which extract chromite ore over a large area and sell it to larger companies. ... Waste overflow, Surface water pollution / Decreasing water (physico-chemical, biological) quality, Groundwater pollution or depletion, Reduced ecological ...

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Chromium Pollution in European Water, Sources,

Chromium is a potentially toxic metal occurring in water and groundwater as a result of natural and anthropogenic sources. Microbial interaction with mafic and ultramafic rocks together with geogenic processes release Cr (VI) in natural environment by chromite oxidation. Moreover, Cr (VI) pollution

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Sukinda, India - The World's Most Polluted Places - TIME

Women draw water from a well. Groundwater in Sukinda is believed to be contaminated with chromium. Number of people potentially affected: 2,600,000. Type of pollutant: Hexavalent chromium and other metals. Source of pollution: Chromite mines and

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Northern Ontario chromite mining has first nation

2012-12-28  Chromite mining is new to Canada. Proposals by Cliffs Natural Resources would see open-pit mining as well as underground operations over the next 30 to 40 years.

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Unsafe Chromium and its Environmental Health Effects of ...

2010-4-13  Chromite mining has vastly improved the economic ... But it has severely affected the ecology and reduced the forest cover. Pollution from these mines is mainly in the form of dust, slag and process water [5]. A huge amount of dust is released ... bichromate factories or chromite mine water discharge points. Under low acidic conditions Cr(III ...

Get Price

Occurrence and Evaluation of Chromium Reducing

2013-12-24  Chromium pollution due to leaching and weathering of chromite mine overburden in mine seepage water is a serious environmental problem. In an attempt to explore the indigenous chromate resistant and reducing bacteria from chromite mine quarry seepage, 145 aerobic, heterotrophic bacteria were isolated from 14 mine

Get Price

Occurrence and Evaluation of Chromium Reducing

Chromium pollution due to leaching and weathering of chromite mine overburden in mine seepage water is a serious environmental problem. In an attempt to explore the indigenous chromate resistant and reducing bacteria from chromite mine quarry seepage, 145 aerobic, heterotrophic bacteria were isolated from 14 mine seepage samples derived from chromite mines of Sukinda valley and Baula-Nuasahi ...

Get Price

Assessment of Hexavalent Chromium in Ground

The sustainable chromite mining in the valley is a major issue so far as the concentration of Cr(VI) is concerned. The production strategies in the mining need to be modified and mining activity below the ground water table should be done by following advanced and sustainable mining techniques.

Get Price

Heavy metal contamination, physico-chemical and

2013-3-11  chromite deposits in the county [2]. Extensive mining of chromite in this area in the past several years poses serious threat to the environment through pollution of toxic hexavalent chromium in soil and water bodies. As a result of heavy mining, a large volume of over burdens (OB), comprising of chromite ores and waste rock

Get Price

Chromium Pollution in European Water, Sources,

Chromium is a potentially toxic metal occurring in water and groundwater as a result of natural and anthropogenic sources. Microbial interaction with mafic and ultramafic rocks together with geogenic processes release Cr (VI) in natural environment by chromite oxidation. Moreover, Cr (VI) pollution

Get Price

Chromite mining in Salcedo and killing of activist ...

Chromite mining in Salcedo is composed of a network of several legal and illegal small-scale miners, which extract chromite ore over a large area and sell it to larger companies. ... Waste overflow, Surface water pollution / Decreasing water (physico-chemical, biological) quality, Groundwater pollution or depletion, Reduced ecological ...

Get Price

Case Study: Chromite mining and processing

Chromium mining and processing In nature, chromium is found as chromite ore, composed of elemental iron, oxygen and chromium (FeOCr 2 O 3). 1,2 heavily in about a 700 m vicinity around the Countries with commercially significant chromite mines include Russia, South Africa, Zimbabwe, Turkey, the Philippines and India.2 Chromite ore is initially

Get Price

MINE WATER QUALITY AND ITS MANAGEMENT - IMWA

2006-4-24  The extraction of the metals is done by both opencast and underground mining methods. Large volumes of mine water are discharged in underground operations while minor volumes are discharged in hill mining. Some mine water, in the case of lead zinc, copper, manganese and chromite is slightly acidic and contains toxic heavy metals.

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Zimbabwean mine dumps and their impacts on river

Zimbabwean mine dumps and their impacts on river water quality a reconnaissance study. Zimbabwe has a substantial number of mines and 67 minerals have been mined in the country since 1900 but at present only 30 different minerals are being mined. Exploitation of a variety of ores, in rocks of diverse composition, provides the potential for a ...

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Occurrence and Evaluation of Chromium Reducing

2013-12-24  Chromium pollution due to leaching and weathering of chromite mine overburden in mine seepage water is a serious environmental problem. In an attempt to explore the indigenous chromate resistant and reducing bacteria from chromite mine quarry seepage, 145 aerobic, heterotrophic bacteria were isolated from 14 mine

Get Price

Assessment of Hexavalent Chromium in Ground

The sustainable chromite mining in the valley is a major issue so far as the concentration of Cr(VI) is concerned. The production strategies in the mining need to be modified and mining activity below the ground water table should be done by following advanced and sustainable mining techniques.

Get Price

Unsafe Chromium and its Environmental Health Effects of ...

2010-4-13  Chromite mining has vastly improved the economic ... But it has severely affected the ecology and reduced the forest cover. Pollution from these mines is mainly in the form of dust, slag and process water [5]. A huge amount of dust is released ... bichromate factories or chromite mine water discharge points. Under low acidic conditions Cr(III ...

Get Price

Chromite mining in Salcedo and killing of activist ...

Chromite mining in Salcedo is composed of a network of several legal and illegal small-scale miners, which extract chromite ore over a large area and sell it to larger companies. ... Waste overflow, Surface water pollution / Decreasing water (physico-chemical, biological) quality, Groundwater pollution or depletion, Reduced ecological ...

Get Price

Chromite mining in Salcedo and killing of activist ...

2015-3-29  Philippine anti-mining activist Francisco Canayoung was murdered after opposing chromite mining in Salcedo, Eastern Samar, which drastically destroys the health of local communities and the environment. ... Waste overflow, Surface water pollution / Decreasing water (physico-chemical, biological) quality, Groundwater pollution

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Valley of despair - Down To Earth

2002-7-31  This finding runs contrary to the theory presented by the Orissa Pollution Control Board (opcb) and mine owners, who contend that hexavalent chromium was present in the water body even before mining operations commenced. Chromite mining

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Munich Personal RePEc Archive - CORE

2019-7-16  The SPCB assessed the performance of chromite mining firms on four indicators namely: Overburden management, quality of mine drainage water, air pollution, and CVI in different water sources. The performance of each firm varied in different indicators. Therefore, it is hard

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Phytoremediation of industrial mines wastewater

The wastewater at Sukinda chromite mines (SCM) area of Orissa (India) showed high levels of toxic hexavalent chromium (Cr VI). Wastewater from chromium-contaminated mines exhibit potential threats for biotic community in the vicinity. The aim of the present investigation is to develop a suitable phy

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Research Journal of Recent Sciences : Chromite

Dutta K. and Ghosh A.R., Analysis of physico-chemical characteristics and metals in water sources of chromite mining in Sukinda Valley, Odisha, India, JEB, 34(4), 783-788, (2013) , 80-93 (2015) APHA (American Public Health Association), Standard Methods for the Examination of Water and Waste Water, 20th Eds., Washington, DC, (1998) ...

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MINE WATER QUALITY AND ITS MANAGEMENT - IMWA

2006-4-24  The extraction of the metals is done by both opencast and underground mining methods. Large volumes of mine water are discharged in underground operations while minor volumes are discharged in hill mining. Some mine water, in the case of lead zinc, copper, manganese and chromite is slightly acidic and contains toxic heavy metals.

Get Price