Stabilization of Mercury in High pH Tank Sludges

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Description

DOE complex contains many tank sludges contaminated with mercury. The high pH of these tank sludges typically fails to stabilize the mercury, resulting in these radioactive wastes also being characteristically hazardous or mixed waste. The traditional treatment for soluble inorganic mercury species is precipitation as insoluble mercuric sulfide. Sulfide treatment and a commercial mercury-stabilizing product were tested on surrogate sludges at various alkaline pH values. Neither the sulfide nor the commercial product stabilized the mercury sufficiently at the high pH of the tank sludges to pass the Toxicity Characteristic Leach Procedure (TCLP) treatment standards of the Resource Conservation and Recovery ... continued below

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12 pages

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Spence, R. & Barton, J. February 24, 2003.

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Description

DOE complex contains many tank sludges contaminated with mercury. The high pH of these tank sludges typically fails to stabilize the mercury, resulting in these radioactive wastes also being characteristically hazardous or mixed waste. The traditional treatment for soluble inorganic mercury species is precipitation as insoluble mercuric sulfide. Sulfide treatment and a commercial mercury-stabilizing product were tested on surrogate sludges at various alkaline pH values. Neither the sulfide nor the commercial product stabilized the mercury sufficiently at the high pH of the tank sludges to pass the Toxicity Characteristic Leach Procedure (TCLP) treatment standards of the Resource Conservation and Recovery Act (RCRA). The commercial product also failed to stabilize the mercury in samples of the actual tank sludges.

Physical Description

12 pages

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  • Waste Management 2003 Symposium, Tucson, AZ (US), 02/23/2003--02/27/2003

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  • Report No.: none
  • Office of Scientific & Technical Information Report Number: 826047
  • Archival Resource Key: ark:/67531/metadc782433

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  • February 24, 2003

Added to The UNT Digital Library

  • Dec. 3, 2015, 9:30 a.m.

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  • Aug. 3, 2016, 1:48 p.m.

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Spence, R. & Barton, J. Stabilization of Mercury in High pH Tank Sludges, article, February 24, 2003; Tucson, Arizona. (digital.library.unt.edu/ark:/67531/metadc782433/: accessed August 18, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.