Initial Experience to Determine the Solubility of Salts in Low-Level Mix Waste Glasses

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Description

Glass may be used to immobilize low-level mixed waste (LLMW) at the Savannah River Site because of its ability to accept a wide variety of components into its network structure. However, many common salts (sulfates, chlorides, phosphates, and chromates) present in the LLMW streams have limited solubility in glass. Processing and product problems may arise if the solubility of these salts is exceeded. In an effort to determine the factors that most affect salt solubilities, a statistical screening experiment was performed. The screening experiment, a Plackett-Burman design, allowed efficient estimation of the effects of variables, such as the composition of ... continued below

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7 p.

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Andrews, M.K. & Saur, C.C. February 17, 1995.

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Description

Glass may be used to immobilize low-level mixed waste (LLMW) at the Savannah River Site because of its ability to accept a wide variety of components into its network structure. However, many common salts (sulfates, chlorides, phosphates, and chromates) present in the LLMW streams have limited solubility in glass. Processing and product problems may arise if the solubility of these salts is exceeded. In an effort to determine the factors that most affect salt solubilities, a statistical screening experiment was performed. The screening experiment, a Plackett-Burman design, allowed efficient estimation of the effects of variables, such as the composition of the glass, the temperature of the melt, the duration of melting, and the cooling rate. Each of these factors, along with a combination of sulfate, chloride, phosphate and chromate concentrations, were examined to provide an estimate of the solubility of each salt. The results of the screening experiment were interpreted to determine which variables should be further examined. The composition of the glass, especially the concentrations of boron, calcium and the alkalis, was found to have the greatest effect on the solubilities of the salts. This paper will discuss the results of the screening experiment and describe a path forward.

Physical Description

7 p.

Notes

INIS; OSTI as DE95060113

Source

  • 3. American Society for Mechanical Engineers (ASME) biennial mixed waste symposium, Baltimore, MD (United States), 7-11 Aug 1995

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  • Other: DE95060113
  • Report No.: WSRC-MS--95-0087
  • Report No.: CONF-950877--9
  • Grant Number: AC09-89SR18035
  • Office of Scientific & Technical Information Report Number: 64294
  • Archival Resource Key: ark:/67531/metadc697988

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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  • February 17, 1995

Added to The UNT Digital Library

  • Aug. 14, 2015, 8:43 a.m.

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  • Feb. 10, 2016, 1:55 p.m.

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Andrews, M.K. & Saur, C.C. Initial Experience to Determine the Solubility of Salts in Low-Level Mix Waste Glasses, article, February 17, 1995; Aiken, South Carolina. (digital.library.unt.edu/ark:/67531/metadc697988/: accessed December 15, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.