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Title: Elution of Uranium and Transition Metals from Amidoxime-Based Polymer Adsorbents for Sequestering Uranium from Seawater

Abstract

High-surface-area amidoxime and carboxylic acid grafted polymer adsorbents developed at Oak Ridge National Laboratory were tested for sequestering uranium in a flowing seawater flume system at the PNNL-Marine Sciences Laboratory. FTIR spectra indicate that a KOH conditioning process is necessary to remove the proton from the carboxylic acid and make the sorbent effective for sequestering uranium from seawater. The alkaline conditioning process also converts the amidoxime groups to carboxylate groups in the adsorbent. Both Na 2CO 3-H 2O 2 and hydrochloric acid elution methods can remove ~95% of the uranium sequestered by the adsorbent after 42 days of exposure in real seawater. The Na 2CO 3-H 2O 2 elution method is more selective for uranium than conventional acid elution. Iron and vanadium are the two major transition metals competing with uranium for adsorption to the amidoxime-based adsorbents in real seawater.

Authors:
; ; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE Office of Nuclear Energy (NE), Fuel Cycle Technologies (NE-5)
OSTI Identifier:
1260866
Report Number(s):
PNNL-SA-113041
Journal ID: ISSN 0888-5885; AF5855000
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Journal Article
Journal Name:
Industrial and Engineering Chemistry Research
Additional Journal Information:
Journal Volume: 55; Journal Issue: 15; Journal ID: ISSN 0888-5885
Publisher:
American Chemical Society (ACS)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Pan, Horng-Bin, Kuo, Li-Jung, Wai, Chien M., Miyamoto, Naomi, Joshi, Ruma, Wood, Jordana R., Strivens, Jonathan E., Janke, Christopher J., Oyola, Yatsandra, Das, Sadananda, Mayes, Richard T., and Gill, Gary A. Elution of Uranium and Transition Metals from Amidoxime-Based Polymer Adsorbents for Sequestering Uranium from Seawater. United States: N. p., 2015. Web. doi:10.1021/acs.iecr.5b03307.
Pan, Horng-Bin, Kuo, Li-Jung, Wai, Chien M., Miyamoto, Naomi, Joshi, Ruma, Wood, Jordana R., Strivens, Jonathan E., Janke, Christopher J., Oyola, Yatsandra, Das, Sadananda, Mayes, Richard T., & Gill, Gary A. Elution of Uranium and Transition Metals from Amidoxime-Based Polymer Adsorbents for Sequestering Uranium from Seawater. United States. doi:10.1021/acs.iecr.5b03307.
Pan, Horng-Bin, Kuo, Li-Jung, Wai, Chien M., Miyamoto, Naomi, Joshi, Ruma, Wood, Jordana R., Strivens, Jonathan E., Janke, Christopher J., Oyola, Yatsandra, Das, Sadananda, Mayes, Richard T., and Gill, Gary A. Mon . "Elution of Uranium and Transition Metals from Amidoxime-Based Polymer Adsorbents for Sequestering Uranium from Seawater". United States. doi:10.1021/acs.iecr.5b03307.
@article{osti_1260866,
title = {Elution of Uranium and Transition Metals from Amidoxime-Based Polymer Adsorbents for Sequestering Uranium from Seawater},
author = {Pan, Horng-Bin and Kuo, Li-Jung and Wai, Chien M. and Miyamoto, Naomi and Joshi, Ruma and Wood, Jordana R. and Strivens, Jonathan E. and Janke, Christopher J. and Oyola, Yatsandra and Das, Sadananda and Mayes, Richard T. and Gill, Gary A.},
abstractNote = {High-surface-area amidoxime and carboxylic acid grafted polymer adsorbents developed at Oak Ridge National Laboratory were tested for sequestering uranium in a flowing seawater flume system at the PNNL-Marine Sciences Laboratory. FTIR spectra indicate that a KOH conditioning process is necessary to remove the proton from the carboxylic acid and make the sorbent effective for sequestering uranium from seawater. The alkaline conditioning process also converts the amidoxime groups to carboxylate groups in the adsorbent. Both Na2CO3-H2O2 and hydrochloric acid elution methods can remove ~95% of the uranium sequestered by the adsorbent after 42 days of exposure in real seawater. The Na2CO3-H2O2 elution method is more selective for uranium than conventional acid elution. Iron and vanadium are the two major transition metals competing with uranium for adsorption to the amidoxime-based adsorbents in real seawater.},
doi = {10.1021/acs.iecr.5b03307},
journal = {Industrial and Engineering Chemistry Research},
issn = {0888-5885},
number = 15,
volume = 55,
place = {United States},
year = {2015},
month = {11}
}

Works referencing / citing this record:

Siderophore-inspired chelator hijacks uranium from aqueous medium
journal, February 2019

  • Ivanov, Alexander S.; Parker, Bernard F.; Zhang, Zhicheng
  • Nature Communications, Vol. 10, Issue 1
  • DOI: 10.1038/s41467-019-08758-1

Interactions of vanadium( iv ) with amidoxime ligands: redox reactivity
journal, January 2018

  • Parker, B. F.; Hohloch, S.; Pankhurst, J. R.
  • Dalton Transactions, Vol. 47, Issue 16
  • DOI: 10.1039/c7dt04069e

An anionic manganese( ii ) metal–organic framework for uranyl adsorption
journal, January 2019

  • Zhang, Tao; Ling, Bo-Kai; Hu, Yue-Qiao
  • CrystEngComm, Vol. 21, Issue 26
  • DOI: 10.1039/c9ce00603f