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Selective transfer of gold (III) in chloride solutions through polyurethane films
Journal article   Peer reviewed

Selective transfer of gold (III) in chloride solutions through polyurethane films

M.J. Nicol
Hydrometallurgy, Vol.195, Article 105354
2020
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Abstract

Gold (III) chloride can be extracted by solvating solvents and this extends to polyurethane foams. This study has confirmed that gold (III) chloride can be rapidly transported through polyurethane films. The rate of transfer follows first-order kinetics with the rate-determining step being transport through the film. This has been confirmed by measuring the rate of stripping of gold (III) pre-loaded into the film and by using films of different thicknesses. Diffusion coefficients for the transport of gold (III) are compared with those from studies using liquid supported membranes. The loading isotherm of gold (III) in the polyurethane film has been obtained. Iron (III) and platinum (IV) are transported at negligible rates while tri-iodide ions are strongly absorbed by the film at a lower rate.

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Citation topics
2 Chemistry
2.209 Spectrometry & Separation
2.209.822 Solvent Extraction
Web Of Science research areas
Metallurgy & Metallurgical Engineering
ESI research areas
Materials Science
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