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Mahdi Sadeghi, Hossein Afarideh, Gholamreza Raisali, P. van den Winkel

Electroplating/electrodissolution/recovery cycle for rhodium target used for an industrial scale cyclotron production of palladium-l03

Keywords: Palladium-103, Production, Separation, Electroplating, Electrodissolution

Electrodeposition of rhodium metal on a copper backing was performed in acidic sulfate media using RhCl₃ · 3 H₂O, Rh₂(SO₄)₃ (recovered from hydrochloric acid solution) and also the commercially available Rhodex plating baths. This work describes the development of a high current density (2.4 A·cm^-2) electrodissolution system that allows solubilisation of rhodium fragments, powder and pieces of foils and wires in the presence of hydrochloric and chlorine gas. Solvent-solvent extraction of no-carrier-added ¹⁰³Pd from the irradiated rhodium target with a-furyldioxime into chloroform under the influence of hydrochloric acid concentration was investigated. The extraction yield was 85.3% for a single extraction with 0.37 M HCl, and ¹⁰³Pd was more than 99% pure.

Radiochimica Acta, Oldenbourg Wissenschaftsverlag

Print ISSN: 0033-8230
Volume: 94, 04/2006
Pages: 217 - 221

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