PROCEDE POUR LA PURIFICATION ET LA RECUPERATION DE PHOSPHATE DETRIBUTYLE UTILISE POUR LE TRAITEMENT DE RECYCLAGE DES COMBUSTIBLES NUCLEAIRES

摘要

Tributyl phosphate solutions used in reprocessing nuclear fuel are purified and removed by passing them through a bed of particles of a macroreticular anion or cation exchange resin whereby the chemical and radiolytic degradation products and fission products present in the used solution are adsorbed on the resin. The tributyl phosphate used as extractant may be mixed with a diluent, e.g., C10-C14n-paraffins. Utilization of a macroreticular resin bed may eliminate the need to wash the tributyl phosphate extractant with large volumes of dilute Na2CO3 solution and thus avoids generation and disposal of a large volume of radioactive waste.