Journal article
Review of the application of ion exchange resins for the recovery of platinum-group metals from hydrochloric acid solutions
Mineral Processing and Extractive Metallurgy Review, Vol.35(6), pp.369-389
2014
Abstract
Platinum-group metals (PGMs) have become one of the most sought after rare metals in this modern age of science and they will continue to increase in importance as a result of their advantageous use in clean-air technology. Due to the scarcity of these precious metals, the application of ion exchange processes to recover PGM ions from relatively uncontaminated aqueous solutions, such as produced by the leaching of secondary sources including used automotive catalytic converters and electronic scrap, is becoming an increasingly cost-effective option and hence an important topic for the PGM production industry. This paper provides a general overview of the basic principles and theories relevant to the hydrometallurgical recovery of PGMs using ion exchange resins, along with a review and discussion of the most important factors that affect the separation and purification of PGMs present initially in predominantly ionic state in an aqueous hydrochloric acid solution. It is shown that in these acidic chloride solutions, the current system of choice for the leaching of PGMs, the adsorption behavior of the PGM ions onto chelating ion exchange resins is strongly dependent on the anionic PGM chloro-complex species present. In addition, it is revealed that the main factors affecting this complexation are (i) acidity and chloride ion concentration of the contacting aqueous chloride solution, (ii) "ageing" of the solution, and (iii) temperature of the solution.
Details
- Title
- Review of the application of ion exchange resins for the recovery of platinum-group metals from hydrochloric acid solutions
- Authors/Creators
- A.N. Nikoloski (Author/Creator) - Murdoch UniversityK.L. Ang (Author/Creator) - Murdoch University
- Publication Details
- Mineral Processing and Extractive Metallurgy Review, Vol.35(6), pp.369-389
- Publisher
- Gordon & Breach Science Publ Inc
- Identifiers
- 991005540214807891
- Copyright
- © 2014 Taylor and Francis Group, LLC.
- Murdoch Affiliation
- Parker Cooperative Research Centre for Integrated Hydrometallurgy Solutions
- Language
- English
- Resource Type
- Journal article
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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
- Mining & Mineral Processing
- ESI research areas
- Engineering