A nanoclay enhanced Amidoxime-Functionalized Double-Network hydrogel for fast and massive uranium recovery from seawater

Liu, Rongrong; Wen, Shunxi; Sun, Ye; Yan, Bingjie; Wang, Jiawen; Chen, Lin; Peng, Shuyi; Ma, Chao; Cao, Xingyu; Ma, Chunxin; Duan, Gaigai; Shi, Se; Yuan, Yihui; Wang, Ning

doi:10.1016/j.cej.2021.130060

Cited by 74 publications

(15 citation statements)

References 54 publications

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“…Liu et al reported that massive uranium recovery from seawater is a vital project to meet the long-term need for worldwide nuclear power, but it is still very difficult to produce high-efficiency adsorbents with good mechanical properties. In this study, a novel nanoclay–poly(amidoxime) (NC–PAO) double-network (DN) composite hydrogel adsorbent with high-efficiency, high strength, and rapid uranium extraction capacity was investigated [ 46 ].…”

Section: Nanomaterials In Wastewater Treatmentmentioning

confidence: 99%

Recent Advances in Adsorptive Nanocomposite Membranes for Heavy Metals Ion Removal from Contaminated Water: A Comprehensive Review

Damiri

Andra²,

Kommineni

et al. 2022

Materials

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Water contamination is one of the most urgent concerns confronting the world today. Heavy metal poisoning of aquatic systems has piqued the interest of various researchers due to the high toxicity and carcinogenic consequences it has on living organisms. Due to their exceptional attributes such as strong reactivity, huge surface area, and outstanding mechanical properties, nanomaterials are being produced and employed in water treatment. In this review, recent advances in the use of nanomaterials in nanoadsorptive membrane systems for wastewater treatment and heavy metal removal are extensively discussed. These materials include carbon-based nanostructures, metal nanoparticles, metal oxide nanoparticles, nanocomposites, and layered double hydroxide-based compounds. Furthermore, the relevant properties of the nanostructures and the implications on their performance for water treatment and contamination removal are highlighted. The hydrophilicity, pore size, skin thickness, porosity, and surface roughness of these nanostructures can help the water permeability of the nanoadsorptive membrane. Other properties such as surface charge modification and mechanical strength can improve the metal adsorption effectiveness of nanoadsorptive membranes during wastewater treatment. Various nanocomposite membrane fabrication techniques are also reviewed. This study is important because it gives important information on the roles of nanomaterials and nanostructures in heavy metal removal and wastewater treatment.

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Section: Nanomaterials In Wastewater Treatmentmentioning

confidence: 99%

Recent Advances in Adsorptive Nanocomposite Membranes for Heavy Metals Ion Removal from Contaminated Water: A Comprehensive Review

Damiri

Andra²,

Kommineni

et al. 2022

Materials

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“…It is important to note that VA-PG is still able to achieve high U/V mass ratio (1.03) in the dark, which is also the highest value among the reported PAO-based hydrogel and membrane adsorbents. [10,18,[57][58][59][60][61][62] To explain this, Figure 6D presents the 13 C cross polarization/magic angle spinning NMR spectra of PAO before and after alkali treatment as well as alkalitreated VA-PG-85%. PAO without alkali treatment exhibited three signals, corresponding to cyclic imide dioxime (δ:151.…”

Section: +mentioning

confidence: 99%

Vertically Aligned Polyamidoxime/Graphene Oxide Hybrid Sheets’ Membrane for Ultrafast and Selective Extraction of Uranium from Seawater

Liu

Zhang

Chen

et al. 2021

Adv Funct Materials

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With the continuous research and development of amidoxime (AO)‐based adsorbents, industrialization production of uranium from seawater gradually becomes a reality. However, the currently available AO‐based adsorbents still suffer from low adsorption rate and poor selectivity. Herein, vertically aligned polyamioxime–graphene oxide (VA‐PG) sheet membrane is fabricated by directional freeze casting. The run‐through microchannels contribute to the free diffusion of uranyl ions (UO22+), leading to the fast adsorption kinetics. Furthermore, partially reduced graphene oxide allows high photothermal conversion efficiency and rapid in‐plane heat transfer, resulting in the fast temperature rise under simulated sunlight irradiation. Because of the endothermic behavior of UO22+, light‐irradiated VA‐PG can simultaneously satisfy the requirements of high adsorption capacity (13.63 mg‐U g‐Ads−1), high adsorption rate (0.43 mg g−1 day−1), and excellent selectivity toward U(VI) over V(V) (U/V = 1.24) in natural seawater, indicating the right direction for a breakthrough in the field of uranium extraction from seawater.

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“…Among these water purication techniques, adsorption technology has been indicated to be an eye-catching and economical option owing to its comprehensive benets of simplicity of design, operational exibility, inexpensive expenditure, and high efficiency. A great variety of adsorbents like nano sized metal-oxide adsorbents, 11 carbon-based adsorbents, 12 glass bers, 13 montmorillonite, 2 Mxenes, 14,15 polymers, [16][17][18] clay, 19,20 and metal-organic frameworks (MOFs) [21][22][23][24] have been designed to recover uoride ions and metal ions in water. However, most traditional deuoridation adsorbents have the limitations of low removal efficiency, are highly pH-dependent over a narrow pH range or have poor selectivity.…”

Section: Introductionmentioning

confidence: 99%

Outstanding fluoride removal from aqueous solution by a La-based adsorbent

et al. 2022

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A nanoclay enhanced Amidoxime-Functionalized Double-Network hydrogel for fast and massive uranium recovery from seawater

Cited by 74 publications

References 54 publications

Recent Advances in Adsorptive Nanocomposite Membranes for Heavy Metals Ion Removal from Contaminated Water: A Comprehensive Review

Recent Advances in Adsorptive Nanocomposite Membranes for Heavy Metals Ion Removal from Contaminated Water: A Comprehensive Review

Vertically Aligned Polyamidoxime/Graphene Oxide Hybrid Sheets’ Membrane for Ultrafast and Selective Extraction of Uranium from Seawater

Outstanding fluoride removal from aqueous solution by a La-based adsorbent

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