Summary Over the past decade, China has supplied over 90% of global rare earths, and in doing so bore significant environmental burdens from processing its complex ores. In this study, we used life …
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Rare earth elements (REE) include the lanthanide series elements (La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, and Lu) plus Sc and Y. Currently these metals have become very critical to several modern technologies ranging from cell phones and televisions to LED light bulbs and wind turbines.
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Rare earth elements (REEs) are important raw materials for green technologies. However, REE mining and production uses techniques that are often not environmentally sustainable. Life cycle assessment (LCA) is a well-recognized method …
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Heavy rare earth elements are critical for modern technological applications, including renewable energy technologies, but their extraction can have disastrous …
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The regulations specify punishment for illegal activities in areas including rare earth mining, smelting and extraction, product distribution, as well as unlawful imports and exports. Rare earths consist of 17 elements that are widely used in high-tech products ranging from flat-screen TVs to lasers and hybrid cars.
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The core conclusions are as follows: (1) Environmental regulation significantly promotes rather than restrains China's rare earth export. (2) According to the rare earth production process, this paper divides rare earth products into 3 kinds, that is, rare earth raw materials, rare earth useful components and rare earth end-use …
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An EU project called Remanence (rare-earth magnet recovery for environmental and resource protection) aims to identify, extract and re-process neodymium–iron–boron magnets from electronic waste. The project brings together industry and academic partners, including UK research organisation C-Tech Innovation .
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For example, many vehicles control air pollution through the use of rare earth catalysts in their exhaust systems; rare earth metals are used in important alloys; glass, granite, and marble, and precious stones are often polished with cerium oxide powder. Additionally, new energy powered vehicles and generators use magnets made …
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RARE EARTH ELEMENTS: A REVIEW OF PRODUCTION, PROCESSING, RECYCLING, AND ASSOCIATED ENVIRONMENTAL ISSUES. U.S. Environmental …
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China has dominated the market for rare earth elements, but US scientists and companies are scrambling to catch up.
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For example, recovery of rare earth metals (REMs) from molten scraps shows low efficiency, and recovery as REOs also has a low price on the market. Currently, ... the Ministry of Environmental Protection of China (MEP) issued the "Emission Standards of Pollutants from Rare Earths Industry" for environmentally friendly …
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Rare earth elements (REEs) are increasingly being studied mainly due to their economic importance and wide range of applications, but also for their rising environmental concentrations and potential environmental and ecotoxicological impacts.
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The original data on rare earth element reserves and the proportion of medium and heavy rare earth elements are from Rare Earth Mining and Environmental Protection 9.
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Abstract As increasing demand for green energy and high-tech devices grows, so does the rising prospecting of rare earth metals required for their production. Protecting the environment and public …
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Rare earth elements (REEs)—a subset of critical minerals and materials (Figure 1)—are essential materials in a broad range of technologies significant to national security, …
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PROTECTION OF METALS AND PHYSICAL CHEMISTRY OF SURFACES Vol. 58 No. 4 2022 CERIUM AND OTHER RARE EARTH SALTS 803 the cerium oxide layer protects the metal from corro-
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Rare-earth metal based adsorbents for effective removal of arsenic from water: A critical review Yang Yu Guangdong Key Laboratory of Environmental Pollution and Health, and School of Environment, Jinan University, Guangzhou, China; ;Department of Civil and Environmental Engineering, National University of Singapore, Singapore; …
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The rare earth elements (REEs), also called rare earth metals or just rare earths (REs), have been the most prominent and discussed raw materials since about 2009. ... The US Environmental Protection Agency dealt with the negative environmental impacts of REE mining in both China and the US and confirmed reported damage (EPA, …
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The successful recovery of critical rare earth metals could reduce the environmental impact of mine wastes, while providing economic benefits to affected …
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Recovery of rare earth metal oxides from NdFeB magnet leachate by hydrophobic deep eutectic solvent extraction, oxalate stripping and calcination. Hydrometallurgy 2024, 223, 106209. ... Balancing economic growth and environmental protection: A sustainable approach to Malaysia's rare-earth industry. Resources Policy …
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process chain of REEs production that have particularly high environmental impacts are identied. Introduction Ever since the increasing importance of rare earth elements (REEs) for green technologies, such as wind turbines, electric vehicles, and low-energy lighting, there has been a parallel discussion concerning environmental impacts caused ...
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The Chinese government has already been quietly closing rare earth refineries for months at a time in the last year and forcing them to install costly environmental controls.
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The rare earths are of a group of 17 chemical elements, several of which are critical for the energy transition. Neodymium, praseodymium, dysprosium and terbium are key to the …
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Environmental impact of rare earth extraction and Regulatory stipulations. As previously indicated, rare earth mining faces challenges due to detectable radioactive matter. Both coal and traditional rare earth-bearing minerals currently processed contain a considerable amount of thorium and uranium due to isomorphic substitution.
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There is great potential for recovering economic value and reducing environmental impact by recycling devices and extracting various elements. ... and techno-economic feasibility. In fact, a recent publication reports rare earth metals, critical metals and platinum group metals in landfills in the United Kingdom (Gutiérrez-Gutiérrez et al ...
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Rare earth metals are important inputs into the development and manufacturing of many green and high-tech products. ... China has introduced efforts to improve the environmental protection performance of rare earth metal mining and processing through requiring improved standards and slowing the introduction of new …
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Over the past decade, China has supplied over 90% of global rare earths, and in doing so bore significant environmental burdens from processing its complex ores. In this study, we used life cycle …
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Rare earth oxides (REOs) and metals as an important class of materials have generated global interest in modern technology. Here, eight REOs (R 2 O 3, R = Yb, Er, Sm, Eu, Y, Gd, Dy, and Ce) are identified those are mostly used in diverse chemical and industrial sectors.In this concise review the applications of these REOs in corrosion …
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Rare Earth Elements: A Review of Production, Processing, Recycling, and Associated Environmental Issues, U.S. Environmental Protection Agency, Office of Research …
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Protection of Metals and Physical Chemistry of Surfaces - Corrosion is one of the main problems in materials science that represents a high cost to the world economy. Rare earth elements have...
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