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Chemically bonded phosphate ceramics for low-level mixed waste stabilization

Technical Report ·
DOI:https://doi.org/10.2172/10114142· OSTI ID:10114142
; ;  [1];  [2]
  1. Argonne National Lab., IL (United States)
  2. Science Applications International Corp., Idaho Falls, ID (United States)
+ Show Author Affiliations

Novel chemically bonded phosphate ceramics (CBPCs) are being developed and fabricated for low-temperature stabilization and solidification of mixed waste streams which are amenable to conventional high-temperature stabilization processes due to presence of volatiles such as heavy metal chloride and fluorides and/or pyrophorics in the wastes. Phosphates of Mg, Mg-Na and Zr are being developed as candidate matrix materials. In this paper, we present the fabrication procedures of phosphate waste forms using surrogates compositions of three typical mixed wastes streams -- ash, cement sludges, and salts. The performance of the final waste forms such as compression strength, leachability of the contaminants, durability in aqueous environment were conducted. In addition, parameteric studies have been conducted to establish the optimal waste loading in a particular binder system. Based on the results, we present potential applications in the treatment of various mixed waste streams.

Research Organization:
Argonne National Lab., IL (United States)
Sponsoring Organization:
USDOE, Washington, DC (United States)
DOE Contract Number:
W-31109-ENG-38
OSTI ID:
10114142
Report Number(s):
ANL/ET/CP--82489; CONF-9409178--13; ON: DE95005840
Country of Publication:
United States
Language:
English

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Related Subjects

052001
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
36 MATERIALS SCIENCE
360200
CERAMICS
CERAMICS, CERMETS, AND REFRACTORIES
EXPERIMENTAL DATA
HAZARDOUS MATERIALS
LOW-LEVEL RADIOACTIVE WASTES
MAGNESIUM PHOSPHATES
MATERIALS TESTING
MATRIX MATERIALS
MECHANICAL PROPERTIES
MIXTURES
RADIOACTIVE WASTE PROCESSING
SODIUM PHOSPHATES
SOLIDIFICATION
WASTE FORMS
WASTE PROCESSING
ZIRCONIUM PHOSPHATES