Chromium contamination and effect on environmental
The occurrence of Cr(VI) pollution from the mining of chromites, dumping of chromium-bearing waste, leaching and mine-tailing infiltration, tannery effluent, and other expanding industrial activities are the significant source of water pollution and soil Mining activities trigger this phenomenon by exposing walls of open pits, underground structures, and crushed waste rock and Process effluents and mine tailings: sources, effects and
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Chromite mining pollution, environmental impact, toxicity and
Coal mining damages the kinetic equilibrium inside the Earth's crust, and this gives rise to wide spread surface subsidence, variation in the underground This review presents the effect of chromium pollution caused by chromite-mining and ferrochrome industries to the environment, its possible toxic effects on Chromium in Environment, Its Toxic Effect from Chromite
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Chromite mining pollution, environmental impact, toxicity and
Exposure of toxic heavy met- als in and around the mining sites during the mining pro- cess contributes largely to pollution of the air, water, and soil.Hexavalent chromium is water soluble and severely toxic as its soluble nature [ 14] allows it to penetrate the biological membrane of the human body leading to Eco-toxicity of hexavalent chromium and its adverse impact on
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Chromite ScienceDirect
This chapter provides information regarding chromite resources in the world: specifically in Turkey, the raw materials used in the Cr industry and waste that is Prior to commencing chromite mining in the Ring of Fire, baseline studies should be undertaken to determine the possible natural occurrence of Cr(VI) in soils, Review of Cr(VI) environmental practices in the chromite
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Chromium in Environment, Its Toxic Effect from
Request PDF Chromium in Environment, Its Toxic Effect from Chromite-Mining and Ferrochrome Industries, and Its Possible Bioremediation Chromium has long been recognized as a toxic, Chromite mining areas and its neighborhoods in Sukinda belongs to Jajpur district, Odisha. Distribution of water samples under varied ranges of Cr(VI) concentration. Data represent mean of n ¼ 5(PDF) Effectiveness of common macrophytes for
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Review of Cr(VI) environmental practices in the chromite mining
Review of Cr(VI) environmental practices in the chromite mining and organ damage in crayfish (Bollinger et al., 1997), detrimental effects on survivability, growth and post-exposure reproduction of marine fish larvae and copepods (Hutchinson et al., 1994), toxic effects on gill, kidney and liver cells of fresh water fishThe groundwater sources of mining and non-mining areas and chromite mines water showed saturation due to mineral dissolution and a higher interaction time with Kim Y.-H. Effect of amorphous silica and silica sand on removal of chromium (VI) by zero-valent iron. Chemosphere. 2007; 66:858–865. doi: 10.1016/j.chemosphere.2006.06Groundwater Quality, Health Risk Assessment, and Source
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Unsafe Chromium and its Environmental Health Effects of Orissa Chromite
Surface water and ground water in Sukinda region contain hexavent chromium Cr(VI), well above the permissible limits of 0.05 mg/l (ppm). There are clusters of chromiteThe ground water in Sukinda valley occurs at a depth of 8 to 11metres, and when it comes in contact with atmospheric air and chrome ore during mining, it gets contaminated with hexavalent chromium(PDF) Environmental scenario of chromite ore mining at Sukinda
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Mechanism of Cr (VI) reduction by an indigenous Springer
Toxicological assessment of CMQW generated due to chromite mining activities at Sukinda Valley has revealed high chromium contamination along with Zn and Fe. The present study focused on the mechanism of chromate reduction by an indigenous multi-metal tolerant bacterium, Rhizobium pusense CR02, isolated from CMQW. The The produced solid wastes, deposited after the magnesite mineral recovery from the respective ores, in the "Grecian Magnesite SA" (Northern Greece) open mining site, are currently estimated to be more than 35 × 10 6 tons in total. The possible valorization and further exploitation of these mining wastes, consisting mainly from Chromite ore addition to serpentinized magnesite mining wastes
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Case Study: Chromite mining and processing Public Health
Case Study: Chromite mining and health concerns 4 Human exposure Although humans are exposed to chromium through air, water, food or supplements containing chromium, the primary exposure source for the general population is food.8 including almost 40,000 Ontarians Foods that contain chromium include cannedThe HQ values of chromium in drinking water ( (2.13, 3.22) were very close to the threshold limit (HQ > 1) in both adults and children. Chromium levels in drinking water exceeded the acceptable limit. In adults, chromium posed a high risk of carcinogenicity. [ 50] Max concentration of Cr: 12.2 × 10 −4 mg/L.Chromium in Water and Carcinogenic Human Health Risk MDPI
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Chromite mining pollution, environmental impact, toxicity and
Request PDF Chromite mining pollution, environmental impact, toxicity and phytoremediation: (VI) into the water bodies, its adverse effects, and remediation of these emerging problems.Sukinda valley in Jajpur and Dhenkanal district of Odisha contains about 98% of the chromite reserve and it is being exploited by Opencast Mining since 1950. Out of six chromite ore bandsProduction of chromite ore from Odisha
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Cleaner Production of Chromium Oxide from Low
Sulfuric acid-based leaching is a promising cleaner method to produce chromium salts, but its feasibility for treating low Fe(II)-chromite still remains to be proven. A Box–Behnken design (BBD)-based set of Case Study: Chromite mining and health concerns 4 Human exposure Although humans are exposed to chromium through air, water, food or supplements containing chromium, the primary exposure source for the general population is food.8 including almost 40,000 Ontarians Foods that contain chromium include cannedCase Study: Chromite mining and processing Public Health
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Chromite
Chromite mining, chromium, and ferrochrome production can toxically effect the environment. Chromite mining is necessary when it comes to the production of economic commodities. Things such as the temperature of the water, its alkalinity, salinity, pH, and other contaminants will also impact these toxic effects on organisms.Mining operation, grinding, concentrating ores and disposal of tailings, provide obvious sources of contamination in the environment, along with mine and mill waste water (Adriano 1986). Even after the cessation of the mining works, huge tailing ponds, as a result of the accumulation of the wastes in pyramidal structures remain in the area with Assessment of heavy metal contamination in soils around chromite mining
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Economic analysis of the Ring of Fire chromite mining play
Most chromite extraction is through open pit mining operations. As with any open pit operation inflows of water have to be managed and controlled, and overburden, waste rock and the ore have to be removed. Then ore is then crushed to release the chromite. Usually a “jaw crusher” is employed. Initial processing of chromite sorts ore intoThe possibility of producing chrome(VI) oxide from domestic chromite concentrates was investigated by carrying out laboratory-scale alkali fusion and water leaching experiments. The effects of(PDF) Processing of Chromite Overburden by Soda Roasting to
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PGM recovery from chromite tailings ResearchGate
This has presented some challenges unique to processing the traditional chromite reefs (ie LG and MG reefs) for the recovery of PGM’s. This paper briefly outlines the background and some currentThus, ingested Cr (VI) through contaminated food and water may produce effects on the liver, kidney, gastrointestinal, immune systems, and blood [94,96]. Ingesting less than 2 g of Cr (VI) compound can result in kidney and liver damage after 1–4 days of exposure, while a dose of 2–5 g of a soluble hexavalent chromium compound can be Chromium Pollution in European Water, Sources, Health Risk,
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Chromite ScienceDirect
Potential Toxic Effects of Chromium, Chromite Mining and Ferrochrome Production: A Literature Review (2012) 56 p. Assessment and prediction of contaminant migration in ground water from chromite waste dump. Environmental Geology, 48 (2005), pp. 420-429. CrossRef View in Scopus Google Scholar.
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