Leach Rates of Composite Waste Forms of Monazite- and Zirconium Phosphate-Type

Abstract

Leaching behavior of simultaneously synthesized composite waste form of monazite- and zirconium phosphate-type was investigated by making use of simulated high level waste (HLW).

The obtained results showed that the leach rates of the composite forms are very low compared to that of the borosilicate glass waste form, indicating that the composite is regarded as being significant to immobilize HLW grossly like vitrification.

KEYWORDS:

• ceramics
• crystalline phosphates
• high level radioactive waste
• immobilization
• leaching
• monazites
• simulation
• solidification
• vitrification
• waste form
• zirconium phosphates