skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Bicarbonate Elution of Uranium from Amidoxime-Based Polymer Adsorbents for Sequestering Uranium from Seawater

Journal Article · · Chemistry Select
 [1];  [1];  [2];  [2];  [3];  [3];  [4];  [4];  [4]
  1. Univ. of Idaho, Moscow, ID (United States). Dept. of Chemistry
  2. Pacific Northwest National Lab. (PNNL), Richland, WA (United States). Marine Sciences Lab.
  3. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
  4. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Materials Science and Technology Division
+ Show Author Affiliations

Abstract Uranium adsorbed on amidoxime‐based polyethylene fibers in simulated seawater can be quantitatively eluted using 3 M KHCO 3 at 40 °C. Thermodynamic calculations are in agreement with the experimental observation that at high bicarbonate concentrations (3 M) uranyl ions bound to amidoxime molecules are converted to uranyl tris‐carbonato complex in the aqueous solution. The elution process is basically the reverse reaction of the uranium adsorption process which occurs at a very low bicarbonate concentration (∼10 −3 M) in seawater. In real seawater experiments, the bicarbonate elution is followed by a NaOH treatment to remove natural organic matter adsorbed on the polymer adsorbent. Using the sequential bicarbonate and NaOH elution, the adsorbent is reusable after rinsing with deionized water and the recycled adsorbent shows no loss of uranium loading capacity based on real seawater experiments.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Nuclear Energy (NE)
Grant/Contract Number:
AC05-00OR22725; 00042246
OSTI ID:
1362216
Alternate ID(s):
OSTI ID: 1400853
Journal Information:
Chemistry Select, Vol. 2, Issue 13; ISSN 2365-6549
Publisher:
WileyCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 26 works
Citation information provided by
Web of Science

References (19)

Development of Sorbers for the Recovery of Uranium from Seawater. Part 2. The Accumulation of Uranium from Seawater by Resins Containing Amidoxime and Imidoxime Functional Groups journal April 1983
The Uranium from Seawater Program at the Pacific Northwest National Laboratory: Overview of Marine Testing, Adsorbent Characterization, Adsorbent Durability, Adsorbent Toxicity, and Deployment Studies journal December 2015
Elution of Uranium and Transition Metals from Amidoxime-Based Polymer Adsorbents for Sequestering Uranium from Seawater journal December 2015
Hyperquad simulation and speciation (HySS): a utility program for the investigation of equilibria involving soluble and partially soluble species journal April 1999
Characterization and Testing of Amidoxime-Based Adsorbent Materials to Extract Uranium from Natural Seawater journal December 2015
Theoretical Study of Oxovanadium(IV) Complexation with Formamidoximate: Implications for the Design of Uranyl-Selective Adsorbents journal December 2015
Fine Fibrous Amidoxime Adsorbent Synthesized by Grafting and Uranium Adsorption–Elution Cyclic Test with Seawater journal January 2004
Uptake of Uranium from Seawater by Amidoxime-Based Polymeric Adsorbent: Field Experiments, Modeling, and Updated Economic Assessment journal March 2014
Development of Sorbers for the Recovery of Uranium from Seawater. 1. Assessment of Key Parameters and Screening Studies of Sorber Materials journal August 1982
Sequestering uranium from seawater: binding strength and modes of uranyl complexes with glutarimidedioxime journal January 2012
Highly Preorganized Ligand 1,10-Phenanthroline-2,9-dicarboxylic Acid for the Selective Recovery of Uranium from Seawater in the Presence of Competing Vanadium Species journal September 2016
Extraction of Uranium from Sea Water journal September 1964
Carbonate–H 2 O 2 leaching for sequestering uranium from seawater journal January 2014
Theoretical study of the coordination behavior of formate and formamidoximate with dioxovanadium( v ) cation: implications for selectivity towards uranyl journal January 2015
Structural and spectroscopic studies of a rare non-oxido V( v ) complex crystallized from aqueous solution journal January 2016
Cyclic Imide Dioximes: Formation and Hydrolytic Stability journal May 2012
Towards understanding KOH conditioning of amidoxime-based polymer adsorbents for sequestering uranium from seawater journal January 2015
Recovery of Uranium from Seawater: A Review of Current Status and Future Research Needs journal January 2013
Thermodynamic studies of U(vi) complexation with glutardiamidoxime for sequestration of uranium from seawater journal January 2013

Cited By (3)

Polypropylene nonwoven fabric modified with oxime and guanidine for antibiofouling and highly selective uranium recovery from seawater journal May 2019
A highly efficient uranium grabber derived from acrylic fiber for extracting uranium from seawater journal January 2020
A Relativistic DFT Probe of Thorium and Protactinium Complexes Supported by Heterocalix[4]arene and Redox Properties of Early-Middle Actinides journal May 2018

Similar Records

Bicarbonate Elution of Uranium from Amidoxime-Based Polymer Adsorbents for Sequestering Uranium from Seawater
Journal Article · Tue May 02 00:00:00 EDT 2017 · Chemistry Select · OSTI ID:1362216
+6 more
Investigations into the Reusability of Amidoxime-Based Polymeric Adsorbents for Seawater Uranium Extraction
Journal Article · Wed Sep 13 00:00:00 EDT 2017 · Industrial and Engineering Chemistry Research · OSTI ID:1362216
+9 more
Elution of uranium and transition metals from amidoxime-based polymer adsorbents for sequestering uranium from seawater
Journal Article · Mon Nov 30 00:00:00 EST 2015 · Industrial and Engineering Chemistry Research · OSTI ID:1362216
+5 more

Related Subjects

36 MATERIALS SCIENCE
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
uranium
polyethyethylene
amidoxime
bicarbonate
seawater