Multifunctional Effect of the Polymer Extractant Thiomethylbenzoxazoyl-α-Methylstyrene on the Extraction of Au(III)

Hanada, Takafumi; Iwakuma, Minako; Goto, Masahiro

doi:10.15261/serdj.26.91

Cited by 2 publications

(2 citation statements)

References 20 publications

(17 reference statements)

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“…Among these residues, the materials generated from the electronic and communication industries are of importance [1,2] because they contain, among other valuable metals, gold. Thus, there is an interest from worldwide researchers to investigate methods for the recovery of this precious metal from these residues or, in general, gold-bearing wastes [3][4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Permeation of AuCl4− Across a Liquid Membrane Impregnated with A324H+Cl− Ionic Liquid

López

2020

Metals

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In the system Au(III)-HCl-A324H+Cl−, liquid-liquid extraction experiments were used to define the extraction equilibrium and the corresponding extraction constant; furthermore, the facilitated transport of this precious metal from HCl solutions across a flat-sheet supported liquid membrane was investigated using the same ionic liquid as a carrier, and as a function of different variables: hydrodynamic conditions, concentration of gold(III) (0.01–0.1 g/L), and HCl (0.5–6 M) in the feed phase, and carrier concentration (0.023–0.92 M) in the membrane. An uphill transport equation was derived considering aqueous feed boundary layer diffusion and membrane diffusion as controlling steps. The aqueous diffusional resistance (Δf) and the membrane diffusional resistance (Δm) were estimated from the proposed equation with values of 241 s/cm and 9730 s/cm, respectively. The performance of the present carrier was compared against results yielded by other ionic liquids, and the influence that other metals had on gold(III) transport from both binary or quaternary solutions was also investigated. Gold was finally recovered from receiving solutions as zero valent gold nanoparticles.

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Section: Introductionmentioning

confidence: 99%

Permeation of AuCl4− Across a Liquid Membrane Impregnated with A324H+Cl− Ionic Liquid

López

2020

Metals

View full text Add to dashboard Cite

show abstract

“…Among these residues, the materials generated from the electronic and communication industries are of importance [1,2], because they contained, among other valuable metals, gold. Thus, there is an interest, from worldwide researchers, to investigate methods for the recovery of this precious metal from these residues or, in general, gold-bearing wastes [3][4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Permeation of AuCl4- across a Liquid Membrane Impregnated with A324H+Cl- Ionic Liquid

López¹

2020

Preprint

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On the system Au(III)-HCl-A324H+Cl-, liquid-liquid extraction experiments were used to define the extraction equilibrium and the corresponding extraction constant, and the facilitated transport of this precious metal, from HCl solutions, across a flat-sheet supported liquid membrane was investigated, using the ionic liquid as carrier, as a function of hydrodynamic conditions, concentration of gold(III) (0.01-0.1 g/L), and HCl (0.5-6 M) in the feed phase, and carrier concentration (0.023-0.92 M) in the membrane. An uphill transport equation was derived considering aqueous feed boundary layer diffusion and membrane diffusion as controlling steps. The aqueous diffusional resistance (Δf) and the membrane diffusional resistance (Δm) were estimated from the proposed equation, being their values 241 s/cm an 9730 s/cm, respectively. The performance of the present carrier was compared against results yielded by other ionic liquids, and also it was investigated the influence that other metals had on gold(III) transport both from binary or quaternary solutions. Gold was finally recovered from receiving solutions as zero valent gold nanoparticles.

show abstract

Multifunctional Effect of the Polymer Extractant Thiomethylbenzoxazoyl-α-Methylstyrene on the Extraction of Au(III)

Cited by 2 publications

References 20 publications

Permeation of AuCl4− Across a Liquid Membrane Impregnated with A324H+Cl− Ionic Liquid

Permeation of AuCl4− Across a Liquid Membrane Impregnated with A324H+Cl− Ionic Liquid

Permeation of AuCl<sub>4</sub><sup>-</sup> across a Liquid Membrane Impregnated with A324H<sup>+</sup>Cl<sup>-</sup> Ionic Liquid

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