Iron tailings used as soil substitute materials to construct reclaimed farmland soil can effectively realize the large-scale resource utilization of iron tailings and reduce environmental risks. It is vital to understand the mechanisms affecting reclaimed soil quality and determine the appropriate pattern for reclamation with iron tailings.
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Iron ore tailings (IOTs) are the indusus solid waste discharged by concentrating mills after processing iron ores and selecting "valuable components" (Yao et al., 2020). In China, 600 million tons of IOTs are discharged every year and the IOTs deposition has reached 5 billion tons.
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Copper-rich tailings can be turned into lightweight ceramics by sintering iron tailings mixed with fly ash and sewage sludge in paint making. Tailings can be used as additives for soil in road construction in the construction industry. In addition, lithium extracted from tailings can be considered both as a mineral and as lithium carbonate in ...
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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)-900-60) with a relatively fast catalysis rate was constructed by co-pyrolysis (900°C, 60 min holding time) of iron ore tailings and wheat straw with a mass ratio of 3:1.
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This set of iron-containing mineral phases, here called the Iron Mineralogical Set (IMS), consists of the main phases of hematite and magnetite and the minority phases of goethite and greenalite and it is used as a marker of tailings. Mass ac magnetic susceptibility measures supported the concept of the IMS as a marker.
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Phytovolatilization means that volatile pollutants absorbed by plants can move into the leaves, where they are discharged into the atmosphere by evaporation. ... Medicago sativa L., establishment in mine mill tailings: II. Root patterns of alfalfa in iron tailings and natural soils. Plant Soil 73:239–246. Google Scholar Shim D, Kim S, Choi Y ...
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Pollutants' migration and transformation behavior in phosphorus ore flotation tailings treated with different additives ... aluminum oxalate, iron oxalate, and organic matter, and is strongly connected to soil parent materials ... Phosphorus ore flotation tailings (PTs) and NG was obtained from phosphate chemical enterprise in Kunming, …
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DOI: 10.1016/j.jece.2023.110143 Corpus ID: 258778591; Electrospun membranes of iron tailings toward peroxymonosulfate activation for efficient photocatalytic degradation of organic pollutants
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Section snippets Sources of raw materials. We utilized high-silica iron tailings containing banded iron formations (BIF) that were collected from typical mines in Liaoning Province, China, where the ore consists mainly of iron and siliceous interlayers dominated by quartz. 100 m isometric sampling was conducted from the discharge port …
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The field capacity under T3 (20-cm iron tailings layer below cinnamon soil (b)) was 19.20% higher than that under T7 (20-cm red clay layer below cinnamon soil …
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Increasing population levels, growing economies, rapid urbanization and changes in consumption patterns have increased the demand for raw materials such as base and precious metals, leading to growing concerns regarding their availability and the global efficiency of the mine supply chain. Mine tailings, consisting of process effluents …
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Nanoparticles also referred to as "ultrafines" in iron ore tailings have been a source of increase total suspended solids and resulting clays that cannot be easily …
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In-depth analysis of how siderite effectively adsorbs inorganic pollutants. ... Abstract. Siderite, extensively mined as a natural iron mineral, is often discarded as tailings due to the low grade of the ore and due to the high cost of current sorting technologies. Yet, this mineral has demonstrated significant potential in several pivotal ...
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Table S5 summarizes the results of individual indices, including I geo, EF, RAC, and PERI.As shown in the table, I geo and EF, which were assessed according to the total amounts of heavy metals, consistently indicated that As, Cu, and Cd in the mine tailings could cause more severe pollution compared to the others (Zn, Pb, Ni, and …
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The removal of heavy metal pollutants from industrial effluents has become an essential condition for the conduct of industrial activities, in accordance with the principles of clean production (Lucaci et al., 2020a; ... Iron tailings, as a valuable secondary resource, is a part with low content of valuable elements produced during the ...
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Mining activities significantly contribute to environmental pollution by releasing chemical contaminants into ecosystems, making natural recovery challenging. In this study, we amended the mining …
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The 3DEF system with Fe/Cu-NCPE was used to treat the landfill leachate, and the reaction setup is shown in Fig. 1.The reactor is a 1000 ml glass beaker with aeration micro-pipes placed at the bottom to provide O 2 for the reaction and to prevent Fe/Cu-NCPE piled up. The nickel /activated carbon fiber composite (Ni/ACF) …
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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 industrial solid waste, particularly iron tailings. Despite being a major mining nation, China faces issues of wasteful practices, …
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compose organic pollutants. The removal efficiency of methylene blue over iron oxides@HTCC at 140 min was 2.86 times that of HTCC. ... zinc extraction tailings of converter dust [13]. The iron in the converter dust transferred to the zinc extraction tailings in the form of Fe(OH)SO4 during the sulfuric acid leaching process under an oxygen ...
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Iron ore tailings (IOTs) are the indusus solid waste discharged by concentrating mills after processing iron ores and selecting "valuable components" (Yao …
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Iron tailings (IOTs) are waste residue with the dual characteristics of secondary resources and environmental pollution produced after ore dressing, which is the main component of industrial solid waste [1,2,3,4].Data show that China's existing IOT stockpile has exceeded 5 billion tonnes, and the annual emissions of new IOTs are …
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The mining industry produces large amounts of tailings which are disposed of in deposits, which neglects their potential value and represents important economic, social and environmental risks. Consequently, implementing circular economy principles using these unconventional geomaterials may decrease the wide-ranging impacts of raw …
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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 …
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As an important subsystem, soil is usually considered as main stack area of various pollutants (Chibuike and Obiora, 2014). Polluted soil by heavy metals not only impairs physical and chemical properties, but also affects the soil organisms. ... Fabrication of glass from iron tailings. Materials Letters, Volume 185, 2016, pp. 511-513.
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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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The preparation of iron ore tailings (IOTs) into supplementary cementitious materials (SCMs) is an effective approach to achieve value-added utilization of industrial solid waste. This study systematically investigates the hydration pattern and strength development of Portland cement systems with the incorporation of IOTs, steel slag (SS), …
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The experimental process was presented in Fig. 1 and comprised three stages, including magnetization roasting of iron tailings, alkaline leaching of roasted products, and magnetic separation of leaching residue. The roasted ore was leached with NaOH solution to remove Si-Al gangue minerals, following a procedure that entailed …
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These types of tailings ponds damage local land resources and produce severe environmental pollution spatially in terms of the storage area and temporally in …
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One of the wastes generated during the iron ore extraction process is Iron Ore Tailings (IOT), which is characterized by the presence of constituents which tend to …
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The phosphate adsorption on the tailings tended to decrease with an increase of pH. A phosphate desorbability of approximately 13-14% was observed, and this low desorbability likely resulted from a strong bonding between the adsorbed PO(4)(3-)and iron oxides in …
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