Denitration of Simulated Fast Reactor Highly Active Liquor Waste

摘要

Vitrification of the highly active arisings from PFR fuel reprocessing is proposed as the optimum long-term solution to the disposal problem. During vitrification ruthenium volatilizes as the tetroxide. Evidence is presented which indicates that a substantial reduction in volatility can be effected by denitration of the liquid feed by treatment with formic acid. The kinetics and stoichiometry of the reactions involved in denitration are examined and empirical rate equations developed. The predictions of the empirical rate equation have been confirmed using a one-tenth scale continuous denitrator, thus giving confidence for the design of full-scale units. (Atomindex citation 14:743282)