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Title: Low-temperature setting phosphate ceramics for stabilization of DOE problem low level mixed-waste: I. Material and waste form development

Abstract

Chemically bonded phosphate ceramics are proposed as candidates for solidification and stabilization of some of the {open_quotes}problem{close_quotes} DOE low-level mixed wastes at low-temperatures. Development of these materials is crucial for stabilization of waste streams which have volatile species and any use of high-temperature technology leads to generation of off-gas secondary waste streams. Several phosphates of Mg, Al, and Zr have been investigated as candidate materials. Monoliths of these phosphates were synthesized using chemical routes at room or slightly elevated temperatures. Detailed physical and chemical characterizations have been conducted on some of these phosphates to establish their durability. Magnesium ammonium phosphate has shown to possess excellent mechanical and as well chemical properties. These phosphates were also used to stabilize a surrogate ash waste with a loading ranging from 25-35 wt.%. Characterization of the final waste forms show that waste immobilization is due to both chemical stabilization and physical encapsulation of the surrogate waste which is desirable for waste immobilization.

Authors:
; ;  [1];  [2]
  1. Argonne National Lab., Argonne, IL (United States)
  2. Science Applications International Corp., Idaho Falls, ID (United States)
Publication Date:
Research Org.:
Argonne National Lab., IL (United States)
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
10142406
Report Number(s):
ANL/ET/CP-80828; CONF-940225-94
ON: DE94009818; TRN: 94:008531
DOE Contract Number:  
W-31109-ENG-38
Resource Type:
Conference
Resource Relation:
Conference: Waste management `94: working towards a cleaner environment,Tucson, AZ (United States),27 Feb - 3 Mar 1994; Other Information: PBD: Mar 1994
Country of Publication:
United States
Language:
English
Subject:
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES; 36 MATERIALS SCIENCE; CERAMICS; TECHNOLOGY ASSESSMENT; MAGNESIUM PHOSPHATES; MECHANICAL PROPERTIES; CHEMICAL PROPERTIES; LOW-LEVEL RADIOACTIVE WASTES; SOLIDIFICATION; ENCAPSULATION; WASTE FORMS; TEMPERATURE RANGE 0065-0273 K; RADIOACTIVE WASTE PROCESSING; 052001; 360202; 360203; WASTE PROCESSING; STRUCTURE AND PHASE STUDIES

Citation Formats

Singh, D, Wagh, A, Knox, L, and Mayberry, J. Low-temperature setting phosphate ceramics for stabilization of DOE problem low level mixed-waste: I. Material and waste form development. United States: N. p., 1994. Web.
Singh, D, Wagh, A, Knox, L, & Mayberry, J. Low-temperature setting phosphate ceramics for stabilization of DOE problem low level mixed-waste: I. Material and waste form development. United States.
Singh, D, Wagh, A, Knox, L, and Mayberry, J. Tue . "Low-temperature setting phosphate ceramics for stabilization of DOE problem low level mixed-waste: I. Material and waste form development". United States. https://www.osti.gov/servlets/purl/10142406.
@article{osti_10142406,
title = {Low-temperature setting phosphate ceramics for stabilization of DOE problem low level mixed-waste: I. Material and waste form development},
author = {Singh, D and Wagh, A and Knox, L and Mayberry, J},
abstractNote = {Chemically bonded phosphate ceramics are proposed as candidates for solidification and stabilization of some of the {open_quotes}problem{close_quotes} DOE low-level mixed wastes at low-temperatures. Development of these materials is crucial for stabilization of waste streams which have volatile species and any use of high-temperature technology leads to generation of off-gas secondary waste streams. Several phosphates of Mg, Al, and Zr have been investigated as candidate materials. Monoliths of these phosphates were synthesized using chemical routes at room or slightly elevated temperatures. Detailed physical and chemical characterizations have been conducted on some of these phosphates to establish their durability. Magnesium ammonium phosphate has shown to possess excellent mechanical and as well chemical properties. These phosphates were also used to stabilize a surrogate ash waste with a loading ranging from 25-35 wt.%. Characterization of the final waste forms show that waste immobilization is due to both chemical stabilization and physical encapsulation of the surrogate waste which is desirable for waste immobilization.},
doi = {},
url = {https://www.osti.gov/biblio/10142406}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1994},
month = {3}
}

Conference:
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