Separation of Pd from Pt and Rh by solvent extraction method from waste solution

The paper investigated the possibility of extractive separation of palladium from platinum and rhodium with ionic liquid Cyphos IL 101. A technological solution obtained by dissolving waste materials was used as the test material. Based on the experiments performed, it was found that a 10% (v/v) sol...

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Published inScientific reports Vol. 14; no. 1; pp. 17806 - 12
Main Authors Pianowska, Karolina, Kluczka, Joanna, Benke, Grzegorz, Goc, Karolina, Malarz, Joanna, Leszczyńska-Sejda, Katarzyna
Format Journal Article
LanguageEnglish
Published England Nature Publishing Group 01.08.2024
Nature Portfolio
Subjects
Analytical chemistry
Chloride
Efficiency
Environmental protection
Hydrochloric acid
Palladium
Palladium recovery
Platinum group metals
Precious metals
Rhodium
Scientific imaging
Separation of PGMs
Solvent extraction
Solvent extraction processes
Toluene
Waste materials
Palladium recovery
Platinum group metals
Solvent extraction
Separation of PGMs
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Summary:The paper investigated the possibility of extractive separation of palladium from platinum and rhodium with ionic liquid Cyphos IL 101. A technological solution obtained by dissolving waste materials was used as the test material. Based on the experiments performed, it was found that a 10% (v/v) solution of the Cyphos IL 101 ionic liquid in toluene allows the extraction of both Pd and Pt with an efficiency of 99% from the initial solution when extraction is carried out at the pH 0.5, v :v phase ratio 1:1 and contact time of 15 min. Moreover, the research proved that it is possible to separate Pd from Pt at the stripping stage using a 0.1 mol/dm thiourea solution while maintaining a high selectivity coefficient.
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ISSN:2045-2322
2045-2322
DOI:10.1038/s41598-024-68687-y