Immobilization of simulated radioactive fluoride waste in phosphate glass

Immobilization of Radioactive Waste in Fly Ash Based Geopolymers

The low-level salt waste (LAW) associated with the production of nuclear materials at US Department of Energy (DOE) facilities will be disposed of in shallow land burial sites managed by the DOE. Two of the primary contaminants of interest are Tc-99 and I-129, both soluble and long-lived radionuclides. Cs-137, a short-lived, strong gamma emitter is also a soluble contaminant of concern. In addi...

Foaming in Radioactive Waste Treatment and Immobilization Processes

“Foaming and Antifoaming in Radioactive Waste Pretreatment and Immobilization”

The objective of this research is to develop a fundamental understanding of the physico-chemical mechanisms that cause foaminess in the DOE High Level (HLW) and Low Activity radioactive waste separation processes and to develop and test advanced antifoam/defoaming agents. Antifoams developed for this research will be tested using simulated defense HLW radioactive wastes obtained from the Hanfor...

Project Title : Foaming in Radioactive Waste Treatment and Immobilization Processes

Enhanced Hlw Glass Formulations for the Waste Treatment & Immobilization Plant

Current estimates and glass formulation efforts are conservative vis-à-vis achievable waste loadings. These formulations have been specified to ensure that glasses are homogenous, contain essentially no crystalline phases, are processable in jouleheated, ceramic-lined melters and meet WTP Contract terms. The WTP’s overall mission will require the immobilization of tank waste compositions that a...