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Title: Galvanic cell for processing of used nuclear fuel

Abstract

A galvanic cell and methods of using the galvanic cell is described for the recovery of uranium from used nuclear fuel according to an electrofluorination process. The galvanic cell requires no input energy and can utilize relatively benign gaseous fluorinating agents. Uranium can be recovered from used nuclear fuel in the form of gaseous uranium compound such as uranium hexafluoride, which can then be converted to metallic uranium or UO.sub.2 and processed according to known methodology to form a useful product, e.g., fuel pellets for use in a commercial energy production system.

Inventors:
; ; ;
Publication Date:
Research Org.:
Savannah River Technology Center (SRTC), Aiken, SC (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1342739
Patent Number(s):
9,562,297
Application Number:
15/083,632
Assignee:
Savannah River Nuclear Solutions, LLC (Aiken, SC) SRNL
DOE Contract Number:
AC09-08SR22470
Resource Type:
Patent
Resource Relation:
Patent File Date: 2016 Mar 29
Country of Publication:
United States
Language:
English
Subject:
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; 36 MATERIALS SCIENCE

Citation Formats

Garcia-Diaz, Brenda L., Martinez-Rodriguez, Michael J., Gray, Joshua R., and Olson, Luke C. Galvanic cell for processing of used nuclear fuel. United States: N. p., 2017. Web.
Garcia-Diaz, Brenda L., Martinez-Rodriguez, Michael J., Gray, Joshua R., & Olson, Luke C. Galvanic cell for processing of used nuclear fuel. United States.
Garcia-Diaz, Brenda L., Martinez-Rodriguez, Michael J., Gray, Joshua R., and Olson, Luke C. Tue . "Galvanic cell for processing of used nuclear fuel". United States. doi:. https://www.osti.gov/servlets/purl/1342739.
@article{osti_1342739,
title = {Galvanic cell for processing of used nuclear fuel},
author = {Garcia-Diaz, Brenda L. and Martinez-Rodriguez, Michael J. and Gray, Joshua R. and Olson, Luke C.},
abstractNote = {A galvanic cell and methods of using the galvanic cell is described for the recovery of uranium from used nuclear fuel according to an electrofluorination process. The galvanic cell requires no input energy and can utilize relatively benign gaseous fluorinating agents. Uranium can be recovered from used nuclear fuel in the form of gaseous uranium compound such as uranium hexafluoride, which can then be converted to metallic uranium or UO.sub.2 and processed according to known methodology to form a useful product, e.g., fuel pellets for use in a commercial energy production system.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Feb 07 00:00:00 EST 2017},
month = {Tue Feb 07 00:00:00 EST 2017}
}

Patent:

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  • A galvanic cell and methods of using the galvanic cell is described for the recovery of uranium from used nuclear fuel according to an electrofluorination process. The galvanic cell requires no input energy and can utilize relatively benign gaseous fluorinating agents. Uranium can be recovered from used nuclear fuel in the form of gaseous uranium compound such as uranium hexafluoride, which can then be converted to metallic uranium or UO.sub.2 and processed according to known methodology to form a useful product, e.g., fuel pellets for use in a commercial energy production system.
  • A process for removing zirconium, niobium, and ruthenium fission products and organic decomposition products from tributyl phosphate solutions by sorption on an aqueous magnesium hydroxide slurry is presented. (AEC)
  • In a fuel cell stack comprising a plurality of fuel cell units, each said fuel cell unit is described comprising an anode, a cathode, an electrolyte in contact on one side with the electrolyte facing face of said anode and in contact on the opposite side with the electrolyte facing face of said cathode, and a separator plate forming an anode chamber between the anode facing face of said separator plate and said separator plate facing face of said anode and said separator plate forming a cathode chamber between the opposite cathode facing face of said separator plate and themore » separator plate facing face of the cathode of an adjacent said fuel cell unit, said anode chamber in gas communication with fuel gas supply and outlet and said cathode chamber in gas communication with oxidant supply and outlet, the improvement comprising; said electrolyte terminating inwardly from the periphery of said separator plate, said separator plate having a electrolyte seal structure extending outwardly from each face, said electrolyte seal structure contacting the periphery of said electrolyte completely around the periphery of said electrolyte forming a separator plate/electrolyte seal under cell operating conditions, said separator plate extending beyond the periphery of said electrolyte and having a separator plate peripheral seal structure spaced beyond the periphery of said electrolyte and extending outwardly from each face of said separator plate, and sealing means at said separator plate peripheral seal structure to form with adjacent separator plates when in said fuel cell stack a peripheral separator plate seal completely around the periphery of said separator plate thereby forming a peripheral compartment between said separator plate/electrolyte seal and said peripheral separator plate seal.« less
  • A fuel cell power plant for producing electricity uses pressurized reactants in the cells. The air is compressed by compressor apparatus which is powered by waste energy produced by the power plant in the form of a hot pressurized gaseous medium, such as the exhaust gases from the cathode side of the cells. For example, the compressor apparatus may comprise a compressor and a turbine which are operably connected. The exhaust gases from the cathode side of the cell are delivered into the turbine which drives the compressor for compressing the air delivered to the cells. 19 Claims, 4 Drawingmore » Figures.« less