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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)
Issue Date:
Research Org.:
ASSOC UNIVERSITIES INC
OSTI Identifier:
872180
Patent Number(s):
5880045
Application Number:
09/122,470
Assignee:
Brookhaven Science Associates (Upton, NY) BNL
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. Tue . "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 = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1999},
month = {3}
}

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