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Title: 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.degree. 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.degree. C. to about 450.degree. 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 aboutmore » 6 mole % potassium oxide. Method of making lead-free phosphate glasses are also provided.« less

Inventors:
 [1];  [2];  [3]
  1. Middle Island, NY
  2. Stony Brook, NY
  3. Wading River, NY
Publication Date:
Research Org.:
Associated Universities, Inc., Upton, NY (United States)
OSTI Identifier:
872180
Patent Number(s):
US 5880045
Application Number:
09/122,470
Assignee:
Brookhaven Science Associates (Upton, NY)
DOE Contract Number:  
AC02-76CH00016
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
phosphate; glasses; radioactive; hazardous; mixed; waste; immobilization; lead-free; glass; compositions; provided; immobilize; level; wastes; monolithic; forms; composition; contained; therein; prepared; 900; degree; mixtures; mole; iron; iii; oxide; aluminum; 15; 20; sodium; potassium; 30; 60; provides; ceramic; 400; 450; 50; 70; silicon; method; lead-free phosphate; monolithic waste; glass compositions; waste form; glass ceramic; mixed waste; aluminum oxide; radioactive waste; contained therein; silicon oxide; glass composition; radioactive wastes; phosphate glass; sodium oxide; phosphate glasses; level radioactive; waste forms; compositions prepared; waste immobilization; /501/106/588/

Citation Formats

Cao, Hui, Adams, Jay W, and Kalb, Paul D. Phosphate glasses for radioactive, hazardous and mixed waste immobilization. United States: N. p., 1999. Web.
Cao, Hui, Adams, Jay W, & Kalb, Paul D. Phosphate glasses for radioactive, hazardous and mixed waste immobilization. United States.
Cao, Hui, Adams, Jay W, and Kalb, Paul D. 1999. "Phosphate glasses for radioactive, hazardous and mixed waste immobilization". United States. https://www.osti.gov/servlets/purl/872180.
@article{osti_872180,
title = {Phosphate glasses for radioactive, hazardous and mixed waste immobilization},
author = {Cao, Hui and Adams, Jay W and Kalb, Paul 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.degree. 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.degree. C. to about 450.degree. 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.},
doi = {},
url = {https://www.osti.gov/biblio/872180}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Mar 09 00:00:00 EST 1999},
month = {Tue Mar 09 00:00:00 EST 1999}
}