Research shows that iron tailings containing heavy metals can widely pollute the environment through dissolution and migration, and have significant biological toxicity effects.
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Pollutant discharge from mine wastes highlights the complex physical character these pollutants possess as they move from ground-based to water or airborne contaminants. The latter types, ... Within the Lake Superior basin, the most notorious case involving water pollution from iron tailings was the Reserve Mining Company case. In 1947, the ...
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Sulfur iron tailings also consist of ferrous iron in a structural form along with other low-valence sulfide species that are reductive (Carvalho et al. 2023), but a large number of piled tailings cannot be used, resulting in a series of environmental problems (Zhang et al. 2024b)pared with the raw ore, the sulfur iron tailings have a price advantage.
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Solid waste and water pollution are global environmental problems that need to be urgently solved. Using industrial solid waste to treat organic pollutant wastewater might be a good strategy to solve two problems. Herein, iron tailings were used to prepare iron-containing mesoporous silica (MFS) materials under a one-step hydrothermal route. The as-prepared MFS showed …
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Iron ore tailing is a major solid waste requiring advanced recycling methods because ore tailing powder is polluting air and water resources. For instance, about 300 million tons of tailings are disposed yearly in 1229 iron ore tailings dams in the Hebei province in China. Iron ore tailings can be recycled as functional materials because these tailings are similar to natural silicate …
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Pollution of soils may be due to water discharge, seepage, runoff from IOT heaps, pits and mines directly to soils. Along with this, deposition of air blown matters from dry IOT …
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Rapid economic development and increased demand for mineral products in China have led to extensive extraction of various ores, resulting in significant environmental challenges associated with the generation of …
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The biotite loaded with nano FeC 2 O 4 (CFS90) was prepared directly from rubidium tailings with oxalic acid (OA) modification, which takes biotite as a matrix and is equipped with FeC 2 O 4 nanosphere. Compared with raw iron-containing silicate tailings (ICSTs) and pure FeC 2 O 4, the degradation efficiency of Cr(III)-EDTA
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The most recent permitting effort for the Minntac tailings basin focused on specific steps to reduce the pollutant levels of the water within the tailings basin, resulting in a reduced concentration of pollutants in the seepage …
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Effective tailings management is crucial for any mining operation, especially in handling iron ore tailings. This section offers insights into the importance of tailings …
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The pollutants degradation rate of iron ore tailings-based heterogeneous catalysts is the main factor limiting its application. Herein, an iron ore tailings-based Fenton-like catalyst(I/W(3:1)-900 ...
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Studies have suggested that weathering of mine tailings could result in the depletion of sulfide minerals and neutralization of carbonate minerals, together with the formation of secondary minerals (e.g., clay minerals and iron/aluminum oxyhydroxides) (Charuseiam et al., 2022; Yi et al., 2021), which was in accordance with the XRD spectra.
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In this study, an iron tailings reservoir was sampled along a particle flow path to compare the pollution characteristic and microbial communities across regions with different particle sizes. The results revealed a gradual reduction in tailings particle size along the flow …
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Iron tailings, a kind of industrial solid waste produced by the iron and steel industry, is a fine grained mixed metal composite material composed of Fe 2 O 3, Al 2 O 3, SiO 2, CaO, MgO, etc. [18].
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DOI: 10.1016/j.cej.2022.137044 Corpus ID: 248900343; Efficient activation of peroxymonosulfate by iron-containing mesoporous silica catalysts derived from iron tailings for degradation of organic pollutants
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In this sense, two kinds of bricks were produced, one of them combining iron ore tailings and polyester fabric wastes, and the other, combining iron ore tailings and PET plastic wastes. Both the bricks were evaluated for the construction of social housing. The results show that these bricks are similar to soil-cement bricks, with which ...
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Based on this, we propose to use the spheres prepared from needle coke loaded with iron and copper bimetals as particle electrodes for 3DEF. Iron tailings are the waste remaining after the separation of iron ore mining, mainly composed of Si, Ca, Fe, Al, Mg elements, which can be developed and utilized as secondary resources [38], [39], [40].
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The characteristics of MTs in terms of the level of contamination and the amounts of pollutants largely depend on the type of processed ore and mining processes used. Tailings often still contain some sulfide minerals after processing, which is a potential environmental hazard. ... [24], iron tailings (0.015–0.08 wt%) [78], lead-zinc tailings ...
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Tailings from iron mining are characterized by high concentrations of iron and manganese oxides, as well as high pH values. With these characteristics, most of the potentially toxic elements …
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Iron tailings, generated from the beneficiation and metallurgy of iron ore, are hazardous wastes that pose significant environmental challenges due to their large-scale disordered storage, resulting in widespread damage and safety concerns [1], [2].The annual worldwide deposition of over 10 billion tons of iron tailings in tailings dams has made it …
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We map historic sites and quantities of iron mining, ore processing, water use, and tailings deposition within subwatershed boundaries. We then map the locations of impaired lakes …
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tailings). Iron ore with high clay content, for example, tends . to generate ne particles. 33. ... to adsorb the most different types of pollutants, whether . organic or inorganic.
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This study investigates the use of iron mine tailings (ITs) as a fine aggregate and a clinker-free binder composed of ground granulated blast-furnace slag (GBFS), desulfurization gypsum (DG), and basic oxygen furnace slag (BOFS) to produce low-cost ultra-high-performance concrete (UHPC). The research optimizes the UHPC base by evaluating the impact of key …
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The use of iron tailings as the primary material used in developing and preparing porous materials is particularly appealing considering the enormous global stockpile of iron tailings, which continues to grow at a rate of 1.4 billion tons per year [19]. This approach could significantly reduce production costs.
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Semantic Scholar extracted view of "Co-utilization of iron ore tailings and coal fly ash for porous ceramsite preparation: Optimization, mechanism, and assessment." ... Effects of flue gas pollutants and production quality indexes. Hexi Zhao Xiangyang Xu Junzhe Zhang Weiming Huang Lixin Qian Hongming Long. Environmental Science, Chemistry.
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The reserves of iron tailings exceed 5 billion tones, ... This may be caused by the adsorption of pollutants onto the PCG sample by the benzene ring in the phenol molecule and the benzene ring in the PCG sample through π-π interaction [59]. Download: Download high-res image (702KB) Download: Download full-size image;
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Efficient activation of peroxymonosulfate by iron-containing mesoporous silica catalysts derived from iron tailings for degradation of organic pollutants Chem. Eng. J., 446 ( 2022 ), Article 137044, 10.1016/j.cej.2022.137044
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Solid iron mining tailings are some of the most relevant pollutants because dam failures release huge amounts of such materials into the environment. These pollutants …
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Lamellar mesoporous Mg-containing silicate adsorbents derived from iron ore tailings for high-efficient adsorption of mycotoxins and antibiotics. Author links open overlay panel Guangyan Tian a b c, Xue Hua a b c ... Among the organic pollutants, new appearing ones, including antibiotics and mycotoxins, are getting more and more attention in ...
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In this study, an iron tailings reservoir was sampled along a particle flow path to compare the pollution characteristic and microbial communities across regions with different …
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