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

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.
Authors:
 [1] ;  [1] ;  [1] ;  [1] ;  [2] ;  [3]
  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)
Publication Date:
OSTI Identifier:
1322540
Report Number(s):
PNNL--24378
AF5855000; TRN: US1700275
DOE Contract Number:
AC05-76RL01830
Resource Type:
Technical Report
Research Org:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
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