Carbonate–H2O2 leaching for sequestering uranium from seawater

Horng-Bin Pan; Weisheng Liao; Chien M. Wai; Yatsandra Oyola; Christopher J. Janke; Guoxin Tian; Linfeng Rao

doi:10.1039/C3DT53404A

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Carbonate–H₂O₂ leaching for sequestering uranium from seawater†

Horng-Bin Pan,^a Weisheng Liao,^a Chien M. Wai,*^a Yatsandra Oyola,^b Christopher J. Janke,^b Guoxin Tian^c and Linfeng Rao^c

Author affiliations

* Corresponding authors

^a Department of Chemistry, University of Idaho, Moscow, Idaho, USA
E-mail: cwai@uidaho.edu

^b Oak Ridge National Laboratory, Oak Ridge, Tennessee, USA

^c Lawrence Berkeley National Laboratory, Berkeley, California, USA

Abstract

Uranium adsorbed on amidoxime-based polyethylene fiber in simulated seawater can be quantitatively eluted at room temperature using 1 M Na₂CO₃ containing 0.1 M H₂O₂. This efficient elution process is probably due to the formation of an extremely stable uranyl-peroxo-carbonato complex in the carbonate solution. After washing with water, the sorbent can be reused with minimal loss of uranium loading capacity. Possible existence of this stable uranyl species in ocean water is also discussed.

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Article information

DOI: https://doi.org/10.1039/C3DT53404A
Article type: Paper
Submitted: 03 Dec 2013
Accepted: 09 Mar 2014
First published: 10 Mar 2014

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Dalton Trans., 2014,43, 10713-10718

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Carbonate–H₂O₂ leaching for sequestering uranium from seawater

H. Pan, W. Liao, C. M. Wai, Y. Oyola, C. J. Janke, G. Tian and L. Rao, Dalton Trans., 2014, 43, 10713 DOI: 10.1039/C3DT53404A

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Dalton Transactions