Removal of Sulfate Ion From AN-107 by Evaporation

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Description

Hanford low-activity waste solutions contain sulfate, which can cause accelerated corrosion of the vitrification melter and unacceptable operating conditions. A method is needed to selectively separate sulfate from the waste. An experiment was conducted to evaluate evaporation for removing sulfate ion from Tank AN-107 low-activity waste. Two evaporation steps were performed. In the first step, the volume was reduced by 55% while in the second step, the liquid volume was reduced another 22%. Analysis of the solids precipitated during these evaporations revealed that large amounts of sodium nitrate and nitrite co-precipitated with sodium sulfate. Many other waste components precipitated as ... continued below

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Medium: P; Size: 51 pages

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Lumetta, GJ; Klinger, GS; Kurath, DE; Sell, RL; Darnell, LP; Greenwood, LR et al. August 2, 2000.

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Description

Hanford low-activity waste solutions contain sulfate, which can cause accelerated corrosion of the vitrification melter and unacceptable operating conditions. A method is needed to selectively separate sulfate from the waste. An experiment was conducted to evaluate evaporation for removing sulfate ion from Tank AN-107 low-activity waste. Two evaporation steps were performed. In the first step, the volume was reduced by 55% while in the second step, the liquid volume was reduced another 22%. Analysis of the solids precipitated during these evaporations revealed that large amounts of sodium nitrate and nitrite co-precipitated with sodium sulfate. Many other waste components precipitated as well. It can be concluded that sulfate removal by precipitation is not selective, and thus, evaporation is not a viable option for removing sulfate from the AN-107 liquid.

Physical Description

Medium: P; Size: 51 pages

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INIS; OSTI as DE00759180

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  • Other Information: PBD: 2 Aug 2000

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  • Report No.: PNWD-3036
  • Report No.: BNFL-RPT-018
  • Grant Number: AC06-76RL01830
  • DOI: 10.2172/759180 | External Link
  • Office of Scientific & Technical Information Report Number: 759180
  • Archival Resource Key: ark:/67531/metadc707322

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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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Creation Date

  • August 2, 2000

Added to The UNT Digital Library

  • Sept. 12, 2015, 6:31 a.m.

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  • April 6, 2016, 2:50 p.m.

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Lumetta, GJ; Klinger, GS; Kurath, DE; Sell, RL; Darnell, LP; Greenwood, LR et al. Removal of Sulfate Ion From AN-107 by Evaporation, report, August 2, 2000; Richland, Washington. (digital.library.unt.edu/ark:/67531/metadc707322/: accessed December 10, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.