Investigations into Alternative Desorption Agents for Amidoxime-Based Polymeric Uranium Adsorbents

Technical Report · Mon Jun 01 00:00:00 EDT 2015

DOI:https://doi.org/10.2172/1322540· OSTI ID:1322540

Gill, Gary A. ^[1]; Kuo, Li-Jung ^[1]; Strivens, Jonathan E. ^[1]; Wood, Jordana R. ^[1]; Wai, Chien ^[2]; Pan, Horng-Bin ^[3]

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1. Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
2. LCW Supercritical Technologies, Inc., Seattle, WA (United States)
3. Univ. of Idaho, Moscow, ID (United States)

Amidoxime-based polymeric braid adsorbents that can extract uranium (U) from seawater are being developed to provide a sustainable supply of fuel for nuclear reactors. A critical step in the development of the technology is to develop elution procedures to selectively remove U from the adsorbents and to do so in a manner that allows the adsorbent material to be reused. This study investigates use of high concentrations of bicarbonate along with targeted chelating agents as an alternative means to the mild acid elution procedures currently in use for selectively eluting uranium from amidoxime-based polymeric adsorbents.

• Research Organization: Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-76RL01830
• OSTI ID: 1322540
• Report Number(s): PNNL-24378; AF5855000; TRN: US1700275
• Country of Publication: United States
• Language: English

Related Subjects

11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
URANIUM
ADSORBENTS
DESORPTION
SEAWATER
CHELATING AGENTS
CONCENTRATION RATIO
ACID CARBONATES
NUCLEAR FUELS
AMIDES
OXIMES
INORGANIC POLYMERS