Review of cost estimates for uranium recovery from seawater

Lindner, H.; Schneider, Erich

doi:10.1016/j.eneco.2015.01.016

Cited by 145 publications

(101 citation statements)

References 19 publications

(38 reference statements)

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“…Oceans possess abundant natural resources. In particular, more than 4.5 billion tons of uranium is present in seawater, ≈1000 times as many as on land . In contrast with traditional fossil fuels, which cause serious environmental pollution and climate change, nuclear power is a relatively clean energy source that has rapidly developed over the past decades.…”

Section: Methodsmentioning

confidence: 99%

“…In contrast with traditional fossil fuels, which cause serious environmental pollution and climate change, nuclear power is a relatively clean energy source that has rapidly developed over the past decades. However, the proven uranium ore reserves on land are limited, and can only provide for about 70 years of consumption of global nuclear energy . To efficiently recover uranium from seawater, for the long‐term sustainable development of nuclear power, many types of uranium adsorbents have been developed, such as inorganic materials, synthetic organic and polymeric materials, various nanostructured adsorbents including grafted polymeric porous supports, metal–organic frameworks, covalent organic frameworks, porous carbons, porous aromatic frameworks, porous‐organic polymers, and recent protein/biomass‐based materials .…”

Section: Methodsmentioning

confidence: 99%

“…In particular, more than 4.5 billion tons of uranium is present in seawater, ≈1000 times as many as on land. [1,2] In contrast with traditional fossil fuels, which cause serious environmental pollution and climate change, nuclear power is a relatively clean energy source that has rapidly developed over the past decades. However, the proven uranium ore reserves on land are limited, and can only provide for about 70 years of consumption of global nuclear energy.…”

mentioning

confidence: 99%

“…However, the proven uranium ore reserves on land are limited, and can only provide for about 70 years of consumption of global nuclear energy. [2] To efficiently recover uranium from seawater, for the long-term sustainable development of nuclear power, many types of uranium adsorbents have been developed, such as inorganic materials, [3][4][5] synthetic organic and polymeric materials, [6][7][8] various nanostructured adsorbents [9][10][11][12][13][14][15] including grafted polymeric porous supports, [9] metal-organic www.advmat.de www.advancedsciencenews.com or good selectivity, [18,40] amidoxime-functionalized hydrogels have both. [41,42] However, to improve the hydrophilicity of the poly(amidoxime) (PAO) and other amidoxime-functionalized polymers, additional hydrophilic hydrogel 3D networks are commonly introduced.…”

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confidence: 99%

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An Ion‐Crosslinked Supramolecular Hydrogel for Ultrahigh and Fast Uranium Recovery from Seawater

et al. 2020

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Large‐scale uranium extraction from seawater is a crucial but challenging part of nuclear power generation. In this study, a new ion‐crosslinked supramolecular Zn2+–poly(amidoxime) (PAO) hydrogel that can super‐efficiently adsorb uranium from seawater is explored. By simply mixing two solutions of zinc chloride and PAO, a supramolecular Zn2+–PAO hydrogel is achieved via the interaction between zinc cations and amidoxime anions. In contrast with existing amidoxime‐functionalized hydrogel‐based adsorbents having low PAO contents and fiber‐based adsorbents with weak hydrophilicity, the PAOs can be directly crosslinked using a small quantity of superhydrophilic zinc ion. Thus, a supramolecular hydrogel is formed, having both a high content of well‐dispersed PAOs and good hydrophilicity. Relative to reported adsorbents, this low‐cost hydrogel membrane exhibits outstanding uranium adsorption performance, reaching 1188 mg g-1 of MU/Mdry gel in 32 ppm uranium‐spiked water. More importantly, after immersion in natural seawater for only 4 weeks, the uranium extraction capacity of the Zn2+–PAO hydrogel membrane reaches 9.23 mg g-1 of MU/Mdry gel. This work can provide a general strategy for designing a new type of supramolecular hydrogel, crosslinked by various bivalent/multivalent cation‐crosslinkers and even many other superhydrophilic supramolecular crosslinkers, for the high‐efficient and massive extraction of uranium from seawater.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

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An Ion‐Crosslinked Supramolecular Hydrogel for Ultrahigh and Fast Uranium Recovery from Seawater

et al. 2020

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“…Owing to the importance of uranium in the nuclear power industry and the gradual decrease of uranium reserves in terrestrial ore, the highly efficient acquisition of uranium from non‐traditional approaches is urgent . The ocean, with a total amount of 4.5 billion tons, is the biggest reserve of uranium on the earth . The recovery of uranium from seawater is a potential strategy to meet the growth demands of uranium .…”

Section: Figurementioning

confidence: 99%

A Bio‐inspired Nano‐pocket Spatial Structure for Targeting Uranyl Capture

Yuan

Feng

et al. 2020

Angewandte Chemie

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Biology has evolved excellent spatial structures for high‐selectivity and high‐affinity capture of heavy metals. Inspired by the spatial structure of the superb‐uranyl binding protein SUP, we mimic the spatial structure of SUP in metal–organic frameworks (MOFs). The MOF UiO‐66‐3C4N fabricated by introducing 4‐aminoisophthalic acid into UiO‐66 shows high uranyl adsorption capacity both in simulated seawater and in natural seawater. In natural seawater, UiO‐66‐3C4N exhibits 17.03 times higher uranium extraction capacity than that of vanadium, indicating the high selectivity of the adsorbent. The EXAFS analysis and DFT calculation reveal that UiO‐66‐3C4N forms smaller nano‐pocket for uranyl capture than that of SUP protein, which can both restrict the entrance of the other interfering ions with larger size and reinforce the binding by increasing the coordination interaction, and therefore qualify the nano‐pocket with high affinity and high selectivity to uranyl.

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Overcoming Chemical Dissociation Processes: Electrochemical Modulation of High‐Affinity Binding Sites for Rapid Uranium Extraction from Seawater

Zhang,

Wang,

et al. 2024

Adv Funct Materials

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Currently reported adsorption (hydroxyl or amidoxime) groups must dissociate hydrogen ions to form ─O− units for the coordination with uranyl ions. However, this process suffers a high energy barrier for bond dissociation, leading to the sluggish uptake speed and low adsorption capacity for uranium extraction from natural seawater. Herein, this study proposes a strategy for electrochemical modulation of adsorption sites, which overcomes the chemical dissociation processes of hydrogen ions. Poly‐2,5‐dihydroxy‐1,4‐benzoquinone containing redox carbonyl groups is intercalated into the channels of a covalent organic framework (COF) through in situ cross‐linking of 2,5‐dihydroxy‐1,4‐benzoquinone. Under electrochemical modulation, the C═O groups are transformed into adjacent phenol–oxygen anions to cooperate with the coordination atoms (O and N) on the COF channel for rapid binding of uranyl ions, which gave an absorption rate of 4.2 mg g−1 d−1 (≈3.3 ppb of uranium in natural seawater). Notably, the COF‐based electrodes delivered an average capacity of ≈20.8 mg‐U per g for uranyl ion adsorption during 5 days of extraction, ≈3000 times larger than that of classical tannin‐based adsorbents. The proposed method for preparing electrochemically modulated binding sites is expected to provide guidance for designing high‐efficiency adsorbents in the future.

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Review of cost estimates for uranium recovery from seawater

Cited by 145 publications

References 19 publications

An Ion‐Crosslinked Supramolecular Hydrogel for Ultrahigh and Fast Uranium Recovery from Seawater

An Ion‐Crosslinked Supramolecular Hydrogel for Ultrahigh and Fast Uranium Recovery from Seawater

A Bio‐inspired Nano‐pocket Spatial Structure for Targeting Uranyl Capture

Overcoming Chemical Dissociation Processes: Electrochemical Modulation of High‐Affinity Binding Sites for Rapid Uranium Extraction from Seawater

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