Search results for "cloud point extraction"

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Surfactant-based enrichment of rare earth elements from NdFeB magnet e-waste: Optimisation of cloud formation and rare earths extraction

2023

Appropriate waste and resource management are essential for a sustainable circular economy with reduced environmental impact. With critical resources, e-waste may serve as indirect raw material. For example, with NdFeB permanent magnets, Neodymium (Nd) and the co-present Dysprosium (Dy) are critical rare earth elements (REEs). However, there exists no economically viable technology for recycling them from electronic waste (e-waste). Here, a method is presented based on cloud point extraction (CPE). The work involves basic complexation chemistry in a cloud medium with pure REE salts, as well as, with real NdFeB-magnets (nearly 28% REE content by weight) from an old hard disk drive (5.2 g mag…

Critical raw materialsCircular economymagneetitgreen processrecyclingE-wasteCloud point extractionRare earthsMaterials ChemistryRecyclingresource managementPhysical and Theoretical Chemistrypinta-aktiiviset aineetSpectroscopyrare earthsResource managemente-wastecircular economycritical raw materialsharvinaiset maametallitsustainabilityCondensed Matter PhysicsAtomic and Molecular Physics and OpticsElectronic Optical and Magnetic MaterialsSustainabilitytalteenottouuttoGreen processkiertotaloussähkö- ja elektroniikkaromucloud point extractionkierrätysCircular economy; Sustainability; Rare earths; Recycling; E-waste; Cloud point extraction; Resource management; Critical raw materials; Green processJournal of Molecular Liquids
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