Process for gettering gaseous ruthenium onto polyvinylpyridine, in particular useful for the recuperation of radioactive ruthenium from irradiated nuclear fuels

摘要

Process for trapping gaseous ruthenium on polyvinylpyridine, usable in particular for recovering the radioactive ruthenium originating from irradiated nuclear fuels. This process consists in bringing a gas containing ruthenium in gaseous form into contact with an adsorbent (11b) consisting of a vinylpyridine polymer or copolymer to bind the ruthenium onto the latter. The gas may consist of the vapours originating from a concentrate of fission products containing ruthenium which has been heated (in 31) in the presence of an oxidising agent to volatilise the ruthenium.