Rare earth metals from secondary sources: Review of potential supply from waste and byproducts

Gaustad, Gabrielle; Williams, Eric; Leader, Alexandra

doi:10.1016/j.resconrec.2020.105213

Cited by 117 publications

(44 citation statements)

References 50 publications

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“…Here, a promising research avenue is urban mining, that is, the process of recovering resources from the existing stocks of products, materials, buildings, and infrastructure dispersed in urban systems that would otherwise end up in a landfill. 98,99 In situations where the use of a critical material cannot be completely avoided or minimized, product design, policy, technology, and business models-in concert-can improve circular economy prospects and reduce criticality risks over a product's life cycle (Figure 5). Keeping products, components, and materials in circulation by design through reuse, remanufacturing, and recycling will require thoughtful and proactive consideration.…”

Section: Enabling Critical Materials Circularity Through Designmentioning

confidence: 99%

The role of design in circular economy solutions for critical materials

et al. 2021

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Section: Enabling Critical Materials Circularity Through Designmentioning

confidence: 99%

The role of design in circular economy solutions for critical materials

et al. 2021

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“…Due to the critical need for these materials, alternative sources need to be investigated, particularly in the context of the circular economy [17,18]. Valorisation of secondary or unconventional sources becomes more and more relevant, both from economic and environmental perspectives [19].…”

Section: Use and Sourcing Of Rare Earths Elementsmentioning

confidence: 99%

Recovery of Rare Earth Elements (REEs) Using Ionic Solvents

et al. 2021

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Rare earth elements (REEs) are becoming more and more significant as they play crucial roles in many advanced technologies. Therefore, the development of optimized processes for their recovery, whether from primary resources or from secondary sources, has become necessary, including recovery from mine tailings, recycling of end-of-life products and urban and industrial waste. Ionic solvents, including ionic liquids (ILs) and deep-eutectic solvents (DESs), have attracted much attention since they represent an alternative to conventional processes for metal recovery. These systems are used as reactive agents in leaching and extraction processes. The most significant studies reported in the last decade regarding the recovery of REEs are presented in this review.

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“…Rare-Earth metal oxides (REOs) possess hydrophobic properties [1]. Cerium dioxide (ceria), which cation is the most abundant lanthanide in the Earth's crust [2], exhibits a large bandgap between 3.0-3.6 eV [3]- [5] which makes this material promising for the above-mentioned applications. The original explanation of the ceria wetting behavior was based on its electronic structure [1].…”

Section: Introductionmentioning

confidence: 99%

Enhanced Hydrophobicity of CeO2 Thin Films by Surface Engineering

Mamedov

Åsland

Cooil

et al. 2022

Preprint

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Due to its advanced surface properties and many technologically important applications, cerium dioxide (CeO2, ceria) has become the focus of extensive research. This work presents a study of factors influencing the wetting properties of ceria. For this, CeO2 thin films were deposited on substrates with different morphologies and characterized by means of XRD, SEM, XPS and water contact angle (WCA) measurements. The obtained results on wetting behavior were expanded using different organic materials on top of the CeO2 thin films to enhance their hydrophobicity. The achieved WCAs were compared with those from samples without ceria to find the effect of the material on the water repelling properties. The results revealed that all factors – the surface material, adsorbed organic molecules and surface texturization – modify the wetting properties of CeO2 thin films independently. This indicates that to achieve a superhydrophobic condition it is necessary to assess all the parameters which may control water behavior on the surface.

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Rare earth metals from secondary sources: Review of potential supply from waste and byproducts

Cited by 117 publications

References 50 publications

The role of design in circular economy solutions for critical materials

The role of design in circular economy solutions for critical materials

Recovery of Rare Earth Elements (REEs) Using Ionic Solvents

Enhanced Hydrophobicity of CeO2 Thin Films by Surface Engineering

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