Precious metal recovery

Chen, Yao; Qiao, Qianyu; Cao, Jiazhen; Li, Hexing; Bian, Zhenfeng

doi:10.1016/j.joule.2021.11.002

Cited by 137 publications

(48 citation statements)

References 64 publications

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“…It is worth noting that we have systematically analyzed and evaluated precious metal recovery systems from environmental and energy perspectives. An article published recently is a comprehensive review from the perspective of energy . Different from that, this perspective is based on the environmental field and pays more attention to the environmental impact of precious metal recycling.…”

Section: Introductionmentioning

confidence: 99%

“…An article published recently is a comprehensive review from the perspective of energy. 16 Different from that, this perspective is based on the environmental field and pays more attention to the environmental impact of precious metal recycling. The purpose is to find a PM recovery method suitable for the coordinated development of environmental and resource protection and put forward the prospect of PM resourcization in the future.…”

Section: ■ Introductionmentioning

confidence: 99%

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Systematic Assessment of Precious Metal Recovery to Improve Environmental and Resource Protection

et al. 2022

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Environmental pollution and resource shortage are two major challenges facing the world today, and resourcization of precious metals is one of the effective strategies to confront these problems. Precious metals, known for their high performance and scarcity, are indispensable our current lives. As nonrenewable resources, the demand and consumption of precious metals are increasing every year. Therefore, it is necessary to develop green and efficient precious metal recovery technologies to alleviate the environmental and resource crisis. This perspective summarizes various typical precious metal recovery strategies and pays attention to innovations from traditional technologies. We also evaluate and prospect the above methods based on secondary pollution and recovery efficiency.

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Section: Introductionmentioning

confidence: 99%

Section: ■ Introductionmentioning

confidence: 99%

Systematic Assessment of Precious Metal Recovery to Improve Environmental and Resource Protection

et al. 2022

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“…Gold (Au), recognised around the world as the "anchor" of financial stability and national economic security, is an extremely important global strategic resource, and the key material for sustainable development, which is closely linked to the development of national defence, science and technology and energy. 1 In recent years, gold has been increasingly used in electronics, catalysis, medicine and jewellery because of its excellent physicochemical properties, such as high-temperature oxidation resistance and corrosion resistance, strong chemical stability, high catalytic activity, stable electrical conductivity and excellent ductility. 2,3 It is reported that the world demand for gold was about 250 tons, and the global gold reserves in 2020 were only about 53 000 tons from the perspective of the global gold resource distribution.…”

Section: Introductionmentioning

confidence: 99%

Turning waste into wealth: efficient and rapid capture of gold from electronic waste with a thiourea functionalised magnetic core stirring rod adsorbent and its application for heterogeneous catalysis

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et al. 2022

Green Chem.

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“…Different processes are already used at an industrial scale for metal recovery. These treatments are usually performed through pyrometallurgy, hydrometallurgy, and leaching methods [15][16][17]. These approaches are highly energy-demanding, expensive, chemically dangerous, and environmentally unfavorable.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Phase Behavior of a Platform of CO2-Soluble Functional Gradient Copolymers Bearing Metal-Complexing Units

et al. 2022

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The synthesis and characterization of a platform of novel functional fluorinated gradient copolymers soluble in liquid and supercritical CO2 is reported. These functional copolymers are bearing different types of complexing units (pyridine, triphenylphosphine, acetylacetate, thioacetate, and thiol) which are well-known ligands for various metals. They have been prepared by reversible addition–fragmentation chain-transfer (RAFT) polymerization in order to obtain well-defined gradient copolymers. The copolymers have been characterized by proton nuclear magnetic resonance (1H-NMR) spectroscopy, matrix-assisted laser desorption/ionization time-of-flight (MALDI-TOF) mass spectrometry, thermal gravimetric analysis (TGA), dynamical scanning calorimetry (DSC) and cloud point measurements in dense CO2. All the investigated metal-complexing copolymers are soluble in dense CO2 under mild conditions (pressure lower than 30 MPa up to 65 °C), confirming their potential applications in processes such as metal-catalyzed reactions in dense CO2, metal impregnation, (e.g., preparation of supported catalysts) or metal extraction from various substrates (solid or liquid effluents). Particularly, it opens the door to greener and less energy-demanding processes for the recovery of metals from spent catalysts compared to more conventional pyro- and hydro-metallurgical methods.

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Precious metal recovery

Cited by 137 publications

References 64 publications

Systematic Assessment of Precious Metal Recovery to Improve Environmental and Resource Protection

Systematic Assessment of Precious Metal Recovery to Improve Environmental and Resource Protection

Turning waste into wealth: efficient and rapid capture of gold from electronic waste with a thiourea functionalised magnetic core stirring rod adsorbent and its application for heterogeneous catalysis

Synthesis and Phase Behavior of a Platform of CO2-Soluble Functional Gradient Copolymers Bearing Metal-Complexing Units

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