Abstract
The K/sub d/ values of Rh (III) in the Rh(III)-HCl system were determined with the batch method using Rh/sup 102/ as the tracer. Results with the anion exchange resins Dowex 1-X8 and 1-X4 and the cation exchange resins Dowex 50W-X8 and 50-X4 were described. Rh(III) was not appreciably adsorbed on the cation exchange resins in 0.1 to 12N HCI. Rh(III) was not adsorbed on the anion exchange resins in 3 to 12N HCI but adsorbed to some extent in the concentration range of HCl lower than 3N. When the carrier-free Rh-102(III) solution was passed through either anion or cation exchange resin column, a part of Rh(III) was adsorbed quite strongly, and very slightly recovered. Many chemicals were tested for recovering strongly adsorbed Rh(III). It was found that the best way to recover adsorbed Rh-102(Ill) was to keep it boiling with 6N HCI for many hours. (auth)
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