2014318· Sorption characteristics of ion exchange resins 001×7, 005×8, D72 regarding rare earth metals (REM) during extraction from barren solution of uranium sorption in dynamic …
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101· Abstract This study presents a reactive transport model for the in-situ recovery of weathered crust elution-deposited rare earth ores and aims to provide predictive and optimization techniques for rare earth recovery.
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The distribution pattern of rare-earth elements in MZ soil was consistent with that in CK, but at levels exceeding the background total rare-earth content of Jiangxi Province soils. Significantly lower concentrations of Zn, Pb, Cr, and Cd were observed in MZ soil compared to CK.
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85· The in situ leaching technology has been used for exploitation of ion-adsorption rare earth element (REE) deposits in South China for more than 20 years. The present study for the first time fully reveals the heavy REE contamination in groundwater impacted by …
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21· Then, the main methods (e.g. in-situ leaching, leaching and co-extraction, bioleaching) for REE recovery from U mine waste, tailings and AMD, are discussed. Finally, an overview of other REE secondary sources (e.g. bauxite residues, metallurgical slags, bottom and fly ash, spent batteries, permanent magnets) is briefly presented.
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2024111· In addition, the electrokinetic behavior and mechanisms of rare earth ions and various ions in weathering crusts in an electric field have not been studied. Thus, we report a comparative study of rare earth elements recovery using electrokinetic mining technology with three leaching agents.
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202561· As the solid feed mass flow is increased, more rare earth elements enter the leaching process, but at the expense of a lower leaching recovery. Trade-offs also exist in relation to the concentration in the liquid inlet, for example, …
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20241219· Rare earth elements (REE) are important resources, but REE in the environment are also deemed to be a new class of pollutant. Phytoremediation, using the hyperaccumulator Dicranopteris pedata, offers a promising approach for reclaiming and recycling REE from mining tailings. However, how in situ leaching affects the topsoil characteristics of …
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The growing demand for rare earth elements, pivotal for modern technologies, has necessitated the development of efficient and sustainable extraction methods from ionic clays. This review provides a comprehensive analysis of the advancements in rare earth recovery from ionic clays, focusing on the geological, geochemical, and technological aspects of the extraction …
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1210· The chemical reaction of ion-adsorption-type rare earth ore during the in situ leaching process is accompanied by ion migration and …
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202461· Nonetheless, the recovery of rare earth elements faces several challenges. In-situ recovery or leaching is regarded as the most environmentally friendly method and a prospective alternative to conventional soil excavation, shaft, and open-pit mining activities.
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202421· A closed loop of recovering rare-earth elements and transition metals from Nd–Fe–B magnets with the total re-use of the electrolyte using a facile electrolysis-selective precipitation procedure.
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81· A clear understanding of the evolution characteristics of leaching solution''s damage to the basement rock of ion-adsorbed rare earth deposits is essential in the in situ leaching mining. In this study, some laboratory tests were carried out to investigate the deterioration behavior and failure mechanism of rock under the erosion of leaching solution. …
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2020123· Based on the special characteristics of the weathered crust elution-deposited rare earth ore, conventional beneficiation technology cannot separate and enrich rare earth elements. Therefore, the rare earth elements are recovered …
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202541· The global demand for Rare Earth Elements (REEs), critical for high-tech industries, presents significant environmental challenges due to the impacts of traditional mining methods. This review focuses on the potential of electrochemical techniques for the sustainable recovery of REEs, particularly from secondary sources like electronic waste.
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20241219· Rare earth elements (REE) are important resources, but REE in the environment are also deemed to be a new class of pollutant. Phytoremediation, using the hyperaccumulator Dicranopteris pedata, offers a promising approach for reclaiming and recycling REE from mining tailings. However, how in situ leaching affects the topsoil characteristics of …
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2013614· In situ leaching is also used for some rare earth element (REE) deposits. The ion-adsorbed clay deposits of southern China and Myanmar are …
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Ion Exchange Leaching: This method is highly effective for extracting rare earth elements (REEs) from ionic clays, as it targets the ion-exchangeable phase where most REEs are found. In Situ Leaching: This process involves injecting a leaching agent, such as magnesium sulfate, directly into the ore body, which then displaces the REEs through ion exchange reactions. Numerical …
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202531· The rare earth elements (REEs) extraction by chemical leaching from ion-adsorption type rare earth ores (IAREO) has led to serious ecological and environmental risks. Conversely, demand for bioleaching is on the rise with the advantage of being environmental-friendly. As one of the organic acids produced by biological metabolism, citric acid was used to …
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201621· Continuous development of advanced technologies has created increasing demand for rare-earth elements (REE), with global emphasis on …
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2013614· In situ leaching is also used for some rare earth element (REE) deposits. The ion-adsorbed clay deposits of southern China and Myanmar are …
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2025119· Rare earth-citrate complexes in the lixivium were isolated by antisolvent precipitation, demonstrating that rare earth cations can be complexed by citrate. During the column leaching process, the leached rare earth ions were complexed with citrate and then carried away with the flowing liquid phase, which improved the recovery of REEs.
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202541· The global demand for Rare Earth Elements (REEs), critical for high-tech industries, presents significant environmental challenges due to the impacts of traditional mining methods. This review focuses on the potential of electrochemical techniques for the sustainable recovery of REEs, particularly from secondary sources like electronic waste.
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2016121· This paper discusses the history and application of in situ recovery (ISR) to a wide variety of metals. The increasing application of ISR may provide an important method to address a key issue for the mining industry, namely the cost of production.
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21· The study of the kinetics of REEs from secondary resources and the understanding of the mechanisms governing the leaching reactions are fundamental as…
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2024111· In addition, the electrokinetic behavior and mechanisms of rare earth ions and various ions in weathering crusts in an electric field have not been studied. Thus, we report a comparative study of rare earth elements recovery using electrokinetic mining technology with three leaching agents.
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2025310· Commercial in-situ recovery of rare earths has emerged as a transformative extraction process for rare earth elements. This innovative method combines geological engineering with in-depth chemical processing, creating opportunities that are less invasive than traditional mining.
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202421· A closed loop of recovering rare-earth elements and transition metals from Nd–Fe–B magnets with the total re-use of the electrolyte using a facile electrolysis-selective precipitation procedure.
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2024111· In addition, the electrokinetic behavior and mechanisms of rare earth ions and various ions in weathering crusts in an electric field have not been studied. Thus, we report a comparative study of rare earth elements recovery using electrokinetic mining technology with three leaching agents.
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202511· The study examined the environmental impacts of in-situ leaching of rare earth elements from ionic clays in southern China. The study assessed the environmental implications across various impact categories, such as global warming potential, acidification, eutrophication in which a water body becomes overly enriched with nutrients, leading to
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