Vitrification of Simulated Fernald K-65 Silo Waste at Low Temperature

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Vitrification is the technology that has been chosen to solidify approximately 18,000 tons of geologic mill tailings, designated as K-65 wastes, at the Fernald Environmental Management Project (FEMP) in Fernald, Ohio. The glass formula developed in this study for the FEMP wastes is a lithia substituted soda-lime-lithia-silica (SLLS) composition which melts at 1050 degrees Celsius. Low melting formulations minimize volatilization of hazardous species such as arsenic, selenium, chromium, and lead during vitrification. Formulation in the SLLS system avoids problematic phase separation known to occur in the MO-B2O3-SiO2 glass forming system (where MO = CaO, MgO, BaO, and PbO which are ... continued below

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10 p. p.

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Jantzen, C.M. & Pickett, J.B. July 7, 1998.

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Description

Vitrification is the technology that has been chosen to solidify approximately 18,000 tons of geologic mill tailings, designated as K-65 wastes, at the Fernald Environmental Management Project (FEMP) in Fernald, Ohio. The glass formula developed in this study for the FEMP wastes is a lithia substituted soda-lime-lithia-silica (SLLS) composition which melts at 1050 degrees Celsius. Low melting formulations minimize volatilization of hazardous species such as arsenic, selenium, chromium, and lead during vitrification. Formulation in the SLLS system avoids problematic phase separation known to occur in the MO-B2O3-SiO2 glass forming system (where MO = CaO, MgO, BaO, and PbO which are all constituents of the FEMP wastes). The SLLS glass passed the Environmental Protection Agency (EPA) Toxic Characteristic Leach Procedure (TCLP) for all the hazardous constituents of concern under the current regulations. The SLLS glass is as durable as the high melting soda-lime-silica glasses and is more durable than the borosilicate glasses previously developed for the K-65 wastes. Optimization of glass formulations in the SLLS glass forming system should provide glasses which will pass the newly promulgated Universal Treatment Standards which take effect of August 28, 1998.

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10 p. p.

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OSTI as DE98058319

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  • 100. annual meeting of the American Ceramic Society, Cincinnati, OH (United States), 3-6 May 1998

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  • Other: DE98058319
  • Report No.: WSRC-MS--97-00854-Rev.1
  • Report No.: CONF-980521--
  • Grant Number: AC09-96SR18500
  • DOI: 10.2172/626443 | External Link
  • Office of Scientific & Technical Information Report Number: 301991
  • Archival Resource Key: ark:/67531/metadc688085

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  • July 7, 1998

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  • July 25, 2015, 2:20 a.m.

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  • Feb. 10, 2016, 2:44 p.m.

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Jantzen, C.M. & Pickett, J.B. Vitrification of Simulated Fernald K-65 Silo Waste at Low Temperature, article, July 7, 1998; Aiken, South Carolina. (digital.library.unt.edu/ark:/67531/metadc688085/: accessed September 21, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.