Electrochemical processing of alkaline nitrate and nitrite wastes

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Description

Processing of high-level waste at the Savannah River Plant (SRP) will produce, as a by-product, a low-level, alkaline salt solution containing approximately 17% sodium nitrate and sodium nitrite. This solution will be incorporated into a cement formulation, saltstone, and placed in an engineered landfill. Electrochemical methods have been investigated to decrease the nitrate and nitrite in this solution in order to lower the leaching of nitrate and nitrite from saltstone and to reduce the volume of saltstone. Laboratory experiments have demonstrated the technical feasibility of electrolytically reducing the nitrate and nitrite in a synthetic salt solution similar in composition to ... continued below

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Pages: 25

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Hobbs, D T & Ebra, M A January 1, 1986.

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Description

Processing of high-level waste at the Savannah River Plant (SRP) will produce, as a by-product, a low-level, alkaline salt solution containing approximately 17% sodium nitrate and sodium nitrite. This solution will be incorporated into a cement formulation, saltstone, and placed in an engineered landfill. Electrochemical methods have been investigated to decrease the nitrate and nitrite in this solution in order to lower the leaching of nitrate and nitrite from saltstone and to reduce the volume of saltstone. Laboratory experiments have demonstrated the technical feasibility of electrolytically reducing the nitrate and nitrite in a synthetic salt solution similar in composition to that expected to be produced at SRP. Greater than 99% of the sodium nitrate and sodium nitrite can be reduced, producing ammonia, nitrogen, oxygen, and sodium hydroxide. In addition, significant reductions in the volume of saltstone may be realized if the sodium hydroxide produced by electrolysis can be recycled.

Physical Description

Pages: 25

Notes

NTIS, PC A02/MF A01.

Source

  • AIChE winter annual meeting, Miami, FL, USA, 2 Nov 1986

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  • Other: DE86015681
  • Report No.: DP-MS-86-10
  • Report No.: CONF-861146-5
  • Grant Number: AC09-76SR00001
  • Office of Scientific & Technical Information Report Number: 5176628
  • Archival Resource Key: ark:/67531/metadc1056158

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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

  • January 1, 1986

Added to The UNT Digital Library

  • Jan. 22, 2018, 7:23 a.m.

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  • May 11, 2018, 10:57 a.m.

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Hobbs, D T & Ebra, M A. Electrochemical processing of alkaline nitrate and nitrite wastes, article, January 1, 1986; Aiken, South Carolina. (digital.library.unt.edu/ark:/67531/metadc1056158/: accessed May 25, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.