Macroporous hydrogel membrane by cooperative reaming for highly efficient uranium extraction from seawater

Wang, Hui; Zheng, Bo; Xu, Taohong; Cao, Meng; Gao, Feng; Zhou, Guanbing; Ma, Chong; Dang, Jia; Yao, Weikun; Wu, Kechen; Liu, Tao; Yuan, Yihui; Fu, Qiming; Wang, Ning

doi:10.1016/j.seppur.2022.120823

Cited by 35 publications

(3 citation statements)

References 58 publications

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“…The multifaceted advancements involve coordination between the uranium and the chelating sites; adsorbent characterization; computer-based ligand simulations, kinetics, and thermodynamic model fittings; and analysis of various parameters including the pH, contact time, adsorbent regeneration, elution efficiency, cost, and environmental sustainability . Recently a bundle of literature emerged from China that covers special metal–organic frameworks, inorganic–organic composites, a graphene oxide/amidoxime hydrogel, − amidoxime functionalized carbon nanofibers, − and ultrahigh molecular weight polyethylene to enhance bulk mechanical robustness. − …”

Section: History Of Uranium Extraction From Seawatermentioning

confidence: 99%

Adsorbents for the Uranium Capture from Seawater for a Clean Energy Source and Environmental Safety: A Review

Naik

2024

ACS Omega

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On the global level, uranium is considered the main nuclear energy source, and its removal from terrestrial ores is enough to last until the end of the current century. Therefore, a major focus is attracted toward the capture of uranium from a sustainable source (seawater). Uranium recovery from seawater has been reported over the last few decades, and recently many efforts have been devoted to the preparation of such adsorbents with higher selectivity and adsorption capacity. The purpose of this review is to report the advancement in adsorbent preparation and modification of porous materials. It also discusses challenges such as adsorbent selectivity, low uranium concentration in seawater, contact time, biofouling, and the solution to the problems necessary to ensure a better adsorption performance of the adsorbent.

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Section: History Of Uranium Extraction From Seawatermentioning

confidence: 99%

Adsorbents for the Uranium Capture from Seawater for a Clean Energy Source and Environmental Safety: A Review

Naik

2024

ACS Omega

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“…As discussed above, AO-functionalized polymeric adsorbents for UES can be shaped into diverse forms by various polymerization methods and processing techniques. 148–153 Constant efforts are being made to improve their structures and morphologies for promoting their adsorption ability towards uranium in seawater. Currently, polymer fiber-based adsorbents are considered to be the most ideal form for UES because of their robust structure and easy deployment for marine engineering.…”

Section: Uranium Adsorbents: Function-oriented Design and Synthesismentioning

confidence: 99%

Uranium extraction from seawater: material design, emerging technologies and marine engineering

et al. 2023

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“…The improved diffusion of UO 2 2+ contributed to the increase in the adsorption capacity in natural seawater. [ 23 ] Owing to the limited number of macropores, however, the uranium adsorption capacity remained low. Vertically aligned PAO‐graphene oxide films were successfully prepared by directional freeze‐casting.…”

Section: Introductionmentioning

confidence: 99%

Yeast‐Raised Polyamidoxime Hydrogel Prepared by Ice Crystal Dispersion for Efficient Uranium Extraction from Seawater

Wang,

Yao,

Yuan

et al. 2024

Advanced Science

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Uranium extraction from seawater has attracted worldwide attention due to the massive reserves of uranium. Due to the straightforward synthesis and strong affinity toward uranyl ions (UO22+), the amidoxime group shows promise for use in highly efficient uranium capture. However, the low mass transfer efficiency within traditional amidoxime‐based adsorbents severely limits the adsorption rate and the utilization of adsorption sites. In this work, a macroporous polyamidoxime (PAO) hydrogel is prepared by yeast‐based biological foaming combined with ice crystal dispersion that effectively maintained the yeast activity. The yeast‐raised PAO (Y‐PAO) adsorbent has numerous bubble‐like holes with an average pore diameter >100 µm. These macropores connected with the intrinsic micropores of PAO to construct efficient diffusion channels for UO22+ provided fast mass transporting channels, leading to the sufficient exposure of hidden binding sites. The maximum adsorption capacity of Y‐PAO membrane reached 10.07 mg‐U/g‐ads, ≈1.54 times higher than that of the control sample. It took only eight days for Y‐PAO to reach the saturation adsorption capacity of the control PAO (6.47 mg‐U/g‐ads, 28 days). Meanwhile, Y‐PAO possessed excellent ion selectivity, good reusability, and low cost. Overall, the Y‐PAO membrane is a highly promising adsorbent for use in industrial‐scale uranium extraction from seawater.

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Macroporous hydrogel membrane by cooperative reaming for highly efficient uranium extraction from seawater

Cited by 35 publications

References 58 publications

Adsorbents for the Uranium Capture from Seawater for a Clean Energy Source and Environmental Safety: A Review

Adsorbents for the Uranium Capture from Seawater for a Clean Energy Source and Environmental Safety: A Review

Uranium extraction from seawater: material design, emerging technologies and marine engineering

Yeast‐Raised Polyamidoxime Hydrogel Prepared by Ice Crystal Dispersion for Efficient Uranium Extraction from Seawater

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