Platinum-group elements: So many excellent properties

Zientek, Michael L.; Loferski, Patricia J.

doi:10.3133/fs20143064

Cited by 16 publications

(13 citation statements)

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“…The PGEs are much less abundant than gold and silver in the Earth's crust and have unique physical and chemical propierties that are critical to many technological applications, making them prime targets for mineral exploration (Cole and Ferron, 2002;Koek et al, 2009;Gunn and Benham, 2009;Zientek and Loferski, 2014;EC, 2014). Rhodium, platinum and palladium are among the five most expensive metals and they have historically traded at a higher price than gold.…”

Section: Introductionmentioning

confidence: 98%

An overview of the platinum-group element nanoparticles in mantle-hosted chromite deposits

Gonzáléz-Jiménez

Reich

2017

Ore Geology Reviews

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Section: Introductionmentioning

confidence: 98%

An overview of the platinum-group element nanoparticles in mantle-hosted chromite deposits

Gonzáléz-Jiménez

Reich

2017

Ore Geology Reviews

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“…Precious metals from the platinum group (PMs) have various applications in different fields due to their physical and chemical properties, such as catalytic activity, good electrical conductivity, corrosion resistance, etc. [1,2]. Over the last 40 years, considerable amounts of gold have been used in the electronics industry [3,4].…”

Section: Introductionmentioning

confidence: 99%

Full Factorial Design for Gold Recovery from Industrial Solutions

Mihăilescu

Negrea

Ciopec

et al. 2021

Toxics

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Gold is one of the precious metals with multiple uses, whose deposits are much smaller than the global production needs. Therefore, extracting maximum gold quantities from industrial diluted solutions is a must. Am-L-GA is a new material, obtained by an Amberlite XAD7-type commercial resin, functionalized through saturation with L-glutamic acid, whose adsorption capacity has been proved to be higher than those of other materials utilized for gold adsorption. In this context, this article presents the results of a factorial design experiment for optimizing the gold recovery from residual solutions resulting from the electronics industry using Am-L-GA. Firstly, the material was characterized using atomic force microscopy (AFM), to emphasize the material’s characteristics, essential for the adsorption quality. Then, the study showed that among the parameters taken into account in the analysis (pH, temperature, initial gold concentration, and contact time), the initial gold concentration in the solution plays a determinant role in the removal process and the contact time has a slightly positive effect, whereas the pH and temperature do not influence the adsorption capacity. The maximum adsorption capacity of 29.27 mg/L was obtained by optimizing the adsorption process, with the control factors having the following values: contact time ~106 min, initial Au(III) concentration of ~164 mg/L, pH = 4, and temperature of 25 °C. It is highlighted that the factorial design method is an excellent instrument to determine the effects of different factors influencing the adsorption process. The method can be applied for any adsorption process if it is necessary to reduce the number of experiments, to diminish the resources or time consumption, or for expanding the investigation domain above the experimental limits.

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“…PRECIOUS metals, including gold (Au), silver (Ag), and platinum group metals, are widely used in the electronics industry and auto-catalyst industry, due to their properties of good electrical conductivity, high melting point, and corrosion resistance. [1,2] The current higher demand for precious metals and the depletion of natural resources result in an urgent need to recover precious metals from more complicated secondary materials, especially from waste electrical and electronic equipment (WEEE), [3] in which concentrations of precious metals are significantly higher than those of natural ores. [4,5] The most typical industrial methods for WEEE reprocessing are primary and secondary copper smelting, [6][7][8][9] followed by hydrometallurgical and electrochemical techniques.…”

Section: Introductionmentioning

confidence: 99%

Precious Metal Distributions Between Copper Matte and Slag at High $$ P_{{{\text{SO}}_{ 2} }} $$ in WEEE Reprocessing

Chen

Avarmaa

Klemettinen

et al. 2021

Metall Mater Trans B

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The distributions of precious metals (gold, silver, platinum, and palladium) between copper matte and silica-saturated FeOx-SiO2/FeOx-SiO2-Al2O3/FeOx-SiO2-Al2O3-CaO slags were investigated at 1300 °C and $$ P_{{{\text{SO}}_{ 2} }} $$ P SO 2 = 0.5 atm. The experiments were carried out in silica crucibles under flowing CO-CO2-SO2-Ar gas atmosphere. The concentrations of precious metals in matte and slag were analyzed by Electron Probe X-ray Microanalysis and Laser Ablation-High-Resolution Inductively Coupled Plasma-Mass Spectrometry, respectively. The precious metal concentrations in matte and slag, as well as the distribution coefficients of precious metals between matte and slag, were displayed as a function of matte grade. The present results obtained at $$ P_{{{\text{SO}}_{ 2} }} $$ P SO 2 of 0.5 atm were compared with previous results at $$ P_{{{\text{SO}}_{ 2} }} $$ P SO 2 of 0.1 atm for revealing the effects of $$ P_{{{\text{SO}}_{ 2} }} $$ P SO 2 and selected slag modifiers (CaO and Al2O3) on precious metal distributions at copper matte smelting conditions. The present results also contribute experimental thermodynamic data of precious metal distributions in pyrometallurgical reprocessing of electronic waste via copper smelting processes.

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Platinum-group elements: So many excellent properties

Abstract: The PGE could play a crucial role in fuel cell technology, which could revolutionize clean energy production for cars, homes, and businesses. From http://www.platinum. matthey.com/about-pgm/image-gallery/.

Cited by 16 publications

References 0 publications

An overview of the platinum-group element nanoparticles in mantle-hosted chromite deposits

An overview of the platinum-group element nanoparticles in mantle-hosted chromite deposits

Full Factorial Design for Gold Recovery from Industrial Solutions

Precious Metal Distributions Between Copper Matte and Slag at High $$ P_{{{\text{SO}}_{ 2} }} $$ in WEEE Reprocessing

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