Recovery of Uranium from Seawater: A Review of Current Status and Future Research Needs

Kim, Jungseung; Tsouris, Costas; Mayes, Richard T.; Oyola, Yatsandra; Saito, Tomonori; Janke, Christopher J.; Dai, Sheng; Schneider, Erich; Sachde, Darshan

doi:10.1080/01496395.2012.712599

Cited by 424 publications

(411 citation statements)

References 199 publications

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“…At present, the commonly used methods of distillation 5 , sorption 3 , and filtration 1 are energy-inefficient, slow, or expensive. Formate is a major product of photochemical 6 , biological 7 and electrochemical 8 CO 2 reduction, and its in-situ capture could potentially play a role in integrated liquid-based CO 2 capture and hydrogen storage technologies [9][10] .…”

Section: Introductionmentioning

confidence: 99%

“…The removal of ions from solution is a crucial challenge with applications ranging from water desalination 1 , wastewater treatment 2 , and capture of valuable metals from seawater 3 to product separation in homogeneous catalytic processes 4 . At present, the commonly used methods of distillation 5 , sorption 3 , and filtration 1 are energy-inefficient, slow, or expensive.…”

Section: Introductionmentioning

confidence: 99%

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Computational Discovery of Hydrogen Bond Design Rules for Electrochemical Ion Separation

2016

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Selective ion separation is a major challenge with far-ranging impact from water desalination to product separation in catalysis. Recently introduced ferrocenium(Fc + )/ferrocene(Fc) polymer electrode materials have been demonstrated experimentally and theoretically to selectively bind carboxylates over perchlorate through weak C-H … O hydrogen bond (HB) interactions that favor carboxylates, despite the comparable size and charge of the two species. However, practical application of this technology in aqueous environments requires further selectivity enhancement. Using a first-principles discovery approach, we investigate the effect of Fc/Fc + functional groups (FGs) on the selectivity and reversibility of formate-Fc + adsorption with respect to perchlorate in aqueous solution. Our wide design space of 44 FGs enables identification of FGs with higher selectivity and rationalization of trends through electronic energy decomposition analysis or geometric hydrogen bonding analysis. Overall, we observe weaker, longer HBs for perchlorate as compared to formate with Fc + . We further identify Fc + functionalizations that simultaneously increase selectivity for formate in aqueous environments but permit rapid release from neutral Fc. We introduce the materiaphore, a 3D abstraction of these design rules, to help guide nextgeneration material optimization for selective ion sorption. This approach is expected to have broad relevance in computational discovery for molecular recognition, sensing, separations, and catalysis.2

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Computational Discovery of Hydrogen Bond Design Rules for Electrochemical Ion Separation

2016

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“…There still coexist other metal ions, some concentration is much higher than uranium concentration (such as sodium, potassium, calcium, magnesium, strontium, etc.) [4] ,some ions'concentration is close to the concentration of uranium (such as iron, aluminum, zinc, nickel, vanadium, molybdenum, etc.). So for the preparation of high selectivity, thehigh efficiency adsorption is the key to realize large-scale collect uranium in seawater.…”

Section: +mentioning

confidence: 99%

Amidoxime Selective Adsorption for Uranyl and Transition Metals

Wei¹,

Chi²,

Guo³

et al. 2015

Proceedings of the 2015 International Symposium on Energy Science and Chemical Engineering

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Abstract:Uranium is the most useful resource in nuclear reactor. But the land resource won't satisfy the nuclear reactor in the future. There still existsa large amountofuraniumin the seawater.The seawater environmenthas been simulated by Amsterdam Density Functional(ADF) forgetingan orderbetween uranyl (UO 2 2+ )and transtition metals under the amidoxime selective adsorpition.Amidoxime selective adsorption for uranyl (UO 2 2+ ) and transition metalswas calculated.The results show that the order of different transition metals with amidoxime in the water environment is Fe(III)> Ni(II)> Co(II)> Cu(II)>UO 2 (VI), based on the designation of ligand structure,bond lengths, the thermodynamic parameters, and the relation between frequency and absorption intensity.Maybe it means the transition metal combines with amidoxime than uranium easier.

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“…The number of braids in parallel in the net is chosen so that the ship can harvest all the net during the selected harvest period at the recovery velocity taken 4 m/min, and produce 1200 tonnes of uranium per year, enough to supply a 5GW nuclear power plant. Figure 4 shows a wind turbine tower system approximately to scale [5]. A system of 20 loops of 100 m deep, for a total belt length is 4000 meters, loops through once every 38 days and can provide enough uranium to supply 5 MW of electric power during the same period.…”

Section: Uranium Harvestingmentioning

confidence: 99%

“…Since the strength of a tower is proportional to the diameter squared and loading (and cost) is proportional to area (diameter), added energy harvesting methods, even though additional energy harvesting mechanisms may increase tower loading, they should be able to reduce the overall cost of energy harvested from the site. Also apparent are other potential revenue generating means including energy storage [3], aquaculture [4], and harvesting uranium from seawater [5,6].…”

Section: The Answer Could Be Blowing In the Wind (Moving With The Wamentioning

confidence: 99%

Symbiotic offshore energy harvesting and storage systems

Slocum

2015

Sustainable Energy Technologies and Assessments

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Taken separately various offshore energy harvesting and storage machines can have a difficult time competing with land-based systems with regard to both initial capital cost and variable costs. However, collocating systems in a symbiotic way can lead to competitive advantages for offshore systems. This paper explores such combinations based on using the support structure for an offshore wind turbine as a basis for an energy storage system, a wave energy harvesting system, and a uranium-from-seawater mining system. Further considerations could also include aquaculture facilities as well as enhanced sport fisherman opportunities. Finally, far offshore systems are not only far less likely to negatively impact birds, such as birds-of-prey, while experience with offshore oil platforms have been shown to act as undersea wildlife havens..

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Recovery of Uranium from Seawater: A Review of Current Status and Future Research Needs

Cited by 424 publications

References 199 publications

Computational Discovery of Hydrogen Bond Design Rules for Electrochemical Ion Separation

Computational Discovery of Hydrogen Bond Design Rules for Electrochemical Ion Separation

Amidoxime Selective Adsorption for Uranyl and Transition Metals

Symbiotic offshore energy harvesting and storage systems

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