Experiments and Modeling of Uranium Adsorption in the Presence of Other Ions in Simulated Seawater
Abstract
Seawater contains uranium at an average concentration of 3.3 ppb, as well as a variety of other ions at either overwhelmingly higher or similar concentrations, which complicate the recovery of uranium. This report describes an investigation of the effects of various factors such as uranium speciation and presence of salts including sodium, calcium, magnesium, and bicarbonate, as well as trace elements such as vanadium on uranium adsorption kinetics in laboratory experiments. Adsorption models are also developed to describe the experimental data of uranium extraction from seawater. Results show that the presence of calcium and magnesium significantly slows down the uranium adsorption kinetics. Vanadium can replace uranium from amidoxime-based adsorbent in the presence of sodium in the solution. Results also show that bicarbonate in the solution strongly competes with amidoxime for binding uranium, and thus slows down the uranium adsorption kinetics. Developed on the basis of the experimental findings, the model is capable of describing the effects of pH, ionic strength, temperature, and concentration of various species. Finally, the results of this work are useful in the understanding of the important factors that control the adsorbent capacity and kinetics of uranium uptake by amidoxime-based adsorbents.
- Authors:
-
- Georgia Inst. of Technology, Atlanta, GA (United States)
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Publication Date:
- Research Org.:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE Office of Nuclear Energy (NE)
- OSTI Identifier:
- 1286930
- Alternate Identifier(s):
- OSTI ID: 1344283
- Grant/Contract Number:
- AC05-00OR22725
- Resource Type:
- Accepted Manuscript
- 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:
- 38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY; 11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; 54 ENVIRONMENTAL SCIENCES; uranium adsorption; amidoxime; seawater; bicarbonate; adsorption modeling
Citation Formats
Ladshaw, Austin, Das, Sadananda, Liao, Wei-Po, Yiacoumi, Sotira, Janke, Christopher James, Mayes, Richard T., Dai, Sheng, and Tsouris, Costas. Experiments and Modeling of Uranium Adsorption in the Presence of Other Ions in Simulated Seawater. United States: N. p., 2015.
Web. doi:10.1021/acs.iecr.5b03456.
Ladshaw, Austin, Das, Sadananda, Liao, Wei-Po, Yiacoumi, Sotira, Janke, Christopher James, Mayes, Richard T., Dai, Sheng, & Tsouris, Costas. Experiments and Modeling of Uranium Adsorption in the Presence of Other Ions in Simulated Seawater. United States. https://doi.org/10.1021/acs.iecr.5b03456
Ladshaw, Austin, Das, Sadananda, Liao, Wei-Po, Yiacoumi, Sotira, Janke, Christopher James, Mayes, Richard T., Dai, Sheng, and Tsouris, Costas. Thu .
"Experiments and Modeling of Uranium Adsorption in the Presence of Other Ions in Simulated Seawater". United States. https://doi.org/10.1021/acs.iecr.5b03456. https://www.osti.gov/servlets/purl/1286930.
@article{osti_1286930,
title = {Experiments and Modeling of Uranium Adsorption in the Presence of Other Ions in Simulated Seawater},
author = {Ladshaw, Austin and Das, Sadananda and Liao, Wei-Po and Yiacoumi, Sotira and Janke, Christopher James and Mayes, Richard T. and Dai, Sheng and Tsouris, Costas},
abstractNote = {Seawater contains uranium at an average concentration of 3.3 ppb, as well as a variety of other ions at either overwhelmingly higher or similar concentrations, which complicate the recovery of uranium. This report describes an investigation of the effects of various factors such as uranium speciation and presence of salts including sodium, calcium, magnesium, and bicarbonate, as well as trace elements such as vanadium on uranium adsorption kinetics in laboratory experiments. Adsorption models are also developed to describe the experimental data of uranium extraction from seawater. Results show that the presence of calcium and magnesium significantly slows down the uranium adsorption kinetics. Vanadium can replace uranium from amidoxime-based adsorbent in the presence of sodium in the solution. Results also show that bicarbonate in the solution strongly competes with amidoxime for binding uranium, and thus slows down the uranium adsorption kinetics. Developed on the basis of the experimental findings, the model is capable of describing the effects of pH, ionic strength, temperature, and concentration of various species. Finally, the results of this work are useful in the understanding of the important factors that control the adsorbent capacity and kinetics of uranium uptake by amidoxime-based adsorbents.},
doi = {10.1021/acs.iecr.5b03456},
journal = {Industrial and Engineering Chemistry Research},
number = 15,
volume = 55,
place = {United States},
year = {Thu Nov 19 00:00:00 EST 2015},
month = {Thu Nov 19 00:00:00 EST 2015}
}
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Works referencing / citing this record:
Rational Design of Porous Nanofiber Adsorbent by Blow-Spinning with Ultrahigh Uranium Recovery Capacity from Seawater
journal, November 2018
- Yuan, Yihui; Zhao, Shilei; Wen, Jun
- Advanced Functional Materials, Vol. 29, Issue 2
Amidoxime Polymers for Uranium Adsorption: Influence of Comonomers and Temperature
journal, November 2017
- Ladshaw, Austin P.; Wiechert, Alexander I.; Das, Sadananda
- Materials, Vol. 10, Issue 11
Engineering robust metal–phenolic network membranes for uranium extraction from seawater
journal, January 2019
- Luo, Wei; Xiao, Gao; Tian, Fan
- Energy & Environmental Science, Vol. 12, Issue 2
Amidoxime Polymers for Uranium Adsorption: Influence of Comonomers and Temperature
journal, November 2017
- Ladshaw, Austin P.; Wiechert, Alexander I.; Das, Sadananda
- Materials, Vol. 10, Issue 11