Conclusion
The experimentally determined total purification factors for palladium relative to silver (first cycle 102, second cycle >103) and rhodium and ruthenium (first cycle >104, second cycle >10) are greater than 105. In connection with the insufficient sensitivity of the atomic absorption method for monitoring and the relatively high value from the control run, we could not determine the true values of the purification factors in some operations of the second extraction cycle and for precipitation of palladosammine. The noted chemical aspects of the behavior of precious metals in extraction systems with petroleum sulfides lead to an estimate of the purification factors for palladium at the 108 level. In particular, the total purification factors increase by 10–100 times when the extraction is carried out in both cycles with W:O=10:1 (F=(W:O)/Dj, where j is the component to be separated [10]). Larger-scale laboratory testing of the proposed flow diagram for recovery and refining of palladium using Ag, Pd, Ru, Rh, and Sb will allow us to experimentally confirm that such estimates are realistic.
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Translated from Atomnaya Énergiya, Vol. 80, No. 4, pp. 267–273, April, 1996.
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Torgov, V.G., Tatarchuk, V.V., Druzhinina, I.A. et al. Behavior of precious metals in extraction recovery and refining of fission product palladium. At Energy 80, 251–256 (1996). https://doi.org/10.1007/BF02419304
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DOI: https://doi.org/10.1007/BF02419304