Apatite- and Monazite-Bearing Glass-Crystal Composites for the Immobilization of Low-Level Nuclear and Hazardous Wastes

Abstract

This study demonstrates that glass-crystal composite waste forms can be produced from waste streams containing high proportions of phosphorus, transition metals, and/or halides. The crystalline phases produced in crucible-scale melts include apatite, monazite, spinels, and a Zr-Si-Fe-Ti phase. These phases readily incorporated radionuclide and toxic metals into their crystal structures, while corrosion tests have demonstrated that glass-crystal composites can be up to 300-fold more durable than simulated high-level nuclear waste glasses, such as SRL 202U.

Meeting Name

1995 MRS Fall Symposium (1995: Nov. 27-30, Boston, MA)

Department(s)

Geosciences and Geological and Petroleum Engineering

Keywords and Phrases

Corrosion; Crystal Structure; Crystals; Glass; Hazardous Materials; Minerals; Monazite; Phosphorus; Radioactive Waste Vitrification; Radioisotopes; Transition Metals; Apatite; Corrosion Tests; Glass Crystal Composite Waste Forms; Halides; Composite Materials

International Standard Serial Number (ISSN)

0272-9172

Document Type

Article - Conference proceedings

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 1996 Materials Research Society (MRS), All rights reserved.

Publication Date

01 Nov 1996

Link to Full Text

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