Phosphate glasses for radioactive, hazardous and mixed waste immobilization
Abstract
Lead-free phosphate glass compositions are provided which can be used to immobilize low level and/or high level radioactive wastes in monolithic waste forms. The glass composition may also be used without waste contained therein. Lead-free phosphate glass compositions prepared at about 900 C include mixtures from about 1 mole % to about 6 mole % iron (III) oxide, from about 1 mole % to about 6 mole % aluminum oxide, from about 15 mole % to about 20 mole % sodium oxide or potassium oxide, and from about 30 mole % to about 60 mole % phosphate. The invention also provides phosphate, lead-free glass ceramic glass compositions which are prepared from about 400 C to about 450 C and which includes from about 3 mole % to about 6 mole % sodium oxide, from about 20 mole % to about 50 mole % tin oxide, from about 30 mole % to about 70 mole % phosphate, from about 3 mole % to about 6 mole % aluminum oxide, from about 3 mole % to about 8 mole % silicon oxide, from about 0.5 mole % to about 2 mole % iron (III) oxide and from about 3 mole % tomore »
- Inventors:
- Issue Date:
- Research Org.:
- Associated Universities Inc
- Sponsoring Org.:
- USDOE, Washington, DC (United States)
- OSTI Identifier:
- 335455
- Patent Number(s):
- 5880045
- Application Number:
- TRN: 99:004580
- Assignee:
- Brookhaven Science Associates, Upton, NY (United States)
- DOE Contract Number:
- AC02-76CH00016
- Resource Type:
- Patent
- Resource Relation:
- Other Information: PBD: 9 Mar 1999
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; 05 NUCLEAR FUELS; PHOSPHATE GLASS; LOW-LEVEL RADIOACTIVE WASTES; HIGH-LEVEL RADIOACTIVE WASTES; VITRIFICATION; CHEMICAL COMPOSITION; FABRICATION
Citation Formats
Cao, H, Adams, J W, and Kalb, P D. Phosphate glasses for radioactive, hazardous and mixed waste immobilization. United States: N. p., 1999.
Web.
Cao, H, Adams, J W, & Kalb, P D. Phosphate glasses for radioactive, hazardous and mixed waste immobilization. United States.
Cao, H, Adams, J W, and Kalb, P D. Tue .
"Phosphate glasses for radioactive, hazardous and mixed waste immobilization". United States.
@article{osti_335455,
title = {Phosphate glasses for radioactive, hazardous and mixed waste immobilization},
author = {Cao, H and Adams, J W and Kalb, P D},
abstractNote = {Lead-free phosphate glass compositions are provided which can be used to immobilize low level and/or high level radioactive wastes in monolithic waste forms. The glass composition may also be used without waste contained therein. Lead-free phosphate glass compositions prepared at about 900 C include mixtures from about 1 mole % to about 6 mole % iron (III) oxide, from about 1 mole % to about 6 mole % aluminum oxide, from about 15 mole % to about 20 mole % sodium oxide or potassium oxide, and from about 30 mole % to about 60 mole % phosphate. The invention also provides phosphate, lead-free glass ceramic glass compositions which are prepared from about 400 C to about 450 C and which includes from about 3 mole % to about 6 mole % sodium oxide, from about 20 mole % to about 50 mole % tin oxide, from about 30 mole % to about 70 mole % phosphate, from about 3 mole % to about 6 mole % aluminum oxide, from about 3 mole % to about 8 mole % silicon oxide, from about 0.5 mole % to about 2 mole % iron (III) oxide and from about 3 mole % to about 6 mole % potassium oxide. Method of making lead-free phosphate glasses are also provided. 8 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1999},
month = {3}
}