CURRENT ANSTO RESEARCH ON WASTEFORM DEVELOPMENT

Conference · Thu Feb 27 04:00:00 EST 2003

OSTI ID:825984

Vance, E R; Perera, D S; Stewart, M W.A.; Begg, B D; Carter, M L; Day, R A; Moricca, S; Smith, K L; Lumpkin, G R; Hanna, J V

Current ANSTO scientific research on wasteform development for mainly high-level radioactive waste is directed towards practical applications. Titanate wasteform products we have developed or are developing are aimed at immobilization of: (a) tank wastes and sludges; (b) U-rich wastes from radioisotope production from reactor irradiation of UO2 targets; (c) Al-rich wastes arising from reprocessing of Al-clad fuels; (d) 99Tc; (e) high- Mo wastes arising from reprocessing of U-Mo fuels and (f) partitioned Cs-rich wastes. Other wasteforms include encapsulated zeolites or silica/alumina beads for immobilization of 129I. Wasteform production techniques cover hot isostatic and uniaxial pressing, sintering, and cold-crucible melting. In addition, building on previous work on speciation and leach resistance of Cs in cementitious products, we are studying geopolymers. Although we have a strong focus on candidate wasteforms for actual wastes, we have a considerable program directed at basic understanding of the wasteforms in regard to crystal chemistry, their dissolution behavior in aqueous media, radiation damage effects and processing techniques.

• Research Organization: Materials, Australian Nuclear Science and Technology Organisation, Menai, NSW 2234 (AU)
• Sponsoring Organization: US Department of Energy (US)
• OSTI ID: 825984
• Country of Publication: United States
• Language: English

Related Subjects

11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
ANSTO
DISSOLUTION
HIGH-LEVEL RADIOACTIVE WASTES
IRRADIATION
RADIATIONS
RADIOISOTOPES
REPROCESSING
SINTERING
SLUDGES
TANKS
TARGETS
TITANATES
WASTE FORMS
WASTE MANAGEMENT
ZEOLITES