Anti-biological contamination strategies for enhanced uranium extraction from seawater

Yu, Kai; Pan, Hongyu; Jiang, Yongfeng; Zhang, T.; Zhang, Huagui; Ma, Feng; Song, Heng; Yuan, Ye; Pan, Jianming

doi:10.1016/j.desal.2023.116893

Cited by 19 publications

(3 citation statements)

References 93 publications

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“…While E in Ca E is defined as E = 2 ⌀ / ( R 0 ln true( 4 H R 0 true) ) where ⌀ is the applied voltage.…”

Section: Experimental Methodsmentioning

confidence: 99%

Porous Microparticle Preparation via Tuning Electrostatic Breakup Characteristics of a Non-Newtonian Fluid for High-Performance Uranium Extraction

Chen,

Wei,

et al. 2024

Ind. Eng. Chem. Res.

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Although polyamidoxime (PAO)-based materials have been acknowledged as one of the most promising adsorbents for commercial-scale uranium extraction, preparing materials with controllable size, high-performance uranium extraction, and effortless recovery is still challenging. The current study explores the potential of combining the electrohydrodynamic atomization (EHDA) technique with high-performance uranium extraction, where composite microparticles (CMPs) were facilely prepared via the EHDA technique, with the particle size being precisely controlled. The precursor is made of an environmentally friendly aqueous solution of PAO and sodium alginate (SA) at a certain ratio. Droplet breakup mechanism of the PAO/SA precursor under a nonuniform electric field was studied, which would result in PAO/SA CMPs with better controlled size. The produced CMPs were characterized to be a hollow structure, ranging from 100 to 2000 μm in size (long diameter), with interpenetrating nanopores being observed inside the particle shell. The equilibrium adsorption capacity increases gradually from ∼400 to ∼800 mg/g with decreasing particle size from 2200 to 120 μm. Hence, the uranium adsorption performance can be easily tuned to adapt to different application scenarios by altering the CMP size, which can be readily achieved via the EHDA technique. This work offers a novel route for generating high-performance uranium adsorbents with desired size and structure, in a highly efficient, facile, and lowcost way, showing great potential for industrial applications.

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“…While E in Ca E is defined as E = 2 ⌀ / ( R 0 ln true( 4 H R 0 true) ) where ⌀ is the applied voltage.…”

Section: Experimental Methodsmentioning

confidence: 99%

Porous Microparticle Preparation via Tuning Electrostatic Breakup Characteristics of a Non-Newtonian Fluid for High-Performance Uranium Extraction

Chen,

Wei,

et al. 2024

Ind. Eng. Chem. Res.

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“…Various techniques have been employed for the adsorption of uranium, including ion exchange [8], precipitation [9], and adsorption using natural and synthetic materials [10]. Among these, adsorption is favored for its simplicity, cost-effectiveness, and adaptability to different conditions.…”

Section: Introductionmentioning

confidence: 99%

A Phosphorylated Dendrimer-Supported Biomass-Derived Magnetic Nanoparticle Adsorbent for Efficient Uranium Removal

Ma,

Luo,

Han

et al. 2024

Nanomaterials

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A novel biomass-based magnetic nanoparticle (Fe3O4-P-CMC/PAMAM) was synthesized by crosslinking carboxymethyl chitosan (CMC) and poly(amidoamine) (PAMAM), followed by phosphorylation with the incorporation of magnetic ferric oxide nanoparticles. The characterization results verified the successful functionalization and structural integrity of the adsorbents with a surface area of ca. 43 m2/g. Batch adsorption experiments revealed that the adsorbent exhibited a maximum adsorption capacity of 1513.47 mg·g−1 for U(VI) at pH 5.5 and 298.15 K, with Fe3O4-P-CMC/G1.5-2 showing the highest affinity among the series. The adsorption kinetics adhered to a pseudo-second-order model (R2 = 0.99, qe,exp = 463.81 mg·g−1, k2 = 2.15×10−2 g·mg−1·min−1), indicating a chemically driven process. Thermodynamic analysis suggested that the adsorption was endothermic and spontaneous (ΔH° = 14.71 kJ·mol−1, ΔG° = −50.63 kJ·mol−1, 298. 15 K), with increasing adsorption capacity at higher temperatures. The adsorbent demonstrated significant selectivity for U(VI) in the presence of competing cations, with Fe3O4-P-CMC/G1.5-2 showing a high selectivity coefficient. The performed desorption and reusability tests indicated that the adsorbent could be effectively regenerated using 1M HCl, maintaining its adsorption capacity after five cycles. XPS analysis highlighted the role of phosphonate and amino groups in the complexation with uranyl ions, and validated the existence of bimodal U4f peaks at 380.1 eV and 390.1 eV belonging to U 4f7/2 and U 4f5/2. The results of this study underscore the promise of the developed adsorbent as an effective and selective material for the treatment of uranium-contaminated wastewater.

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“…Marine biofouling is the leading cause of the harsh marine environment and is a big challenge for the U(VI) extraction task, − which can disrupt the extraction process, reduce the capacity and selectivity, and increase the energy consumption. − Researchers made great efforts to solve the marine biofouling problem and found that the introduction of antibiotics can soundly inhibit the attachment and reproduction of marine microorganisms on adsorbent surfaces. − The shedding of antibiotics and their degradation products during the application process would pose a serious threat to marine ecosystems and human health through food chain. , To reduce the harm of chemical reagents, the design of an environmentally friendly adsorbent is considered to be one of the development trends of extraction of U(VI) materials.…”

Section: Introductionmentioning

confidence: 99%

Application of Natural Antibacterial Plants in the Extraction of Uranium from Seawater

Zhang,

Gao,

Yuan

et al. 2024

ACS Appl. Bio Mater.

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Marine biofouling directly affects the performance and efficiency of uranium (U(VI)) extraction from seawater. Compared to traditional chemical methods, natural plant extracts are generally biodegradable and nontoxic, making them an environmentally friendly alternative to synthetic chemicals in solving the marine biofouling problem. The effectiveness of natural antibacterial plants (i.e., pine needle, peppermint, Acorus gramineus Soland, Cacumen platycladi, and wormwood) in solving the marine biofouling problem was evaluated in this work. Experimental results showed that natural antibacterial plants could kill Vibrio alginolyticus in solution and effectively solve the marine biofouling problem of U(VI) extraction. To improve the adsorption capacity of natural plants for U(VI) in seawater, poly(vinylphosphonic acid) (PVPA) was modified on natural antibacterial plant surfaces by irradiation grafting technology. PVPA and natural antibacterial plants work as active sites and base materials for the U(VI) extraction material, respectively. The recovery performance of PVPA/pine needle for U(VI) was preliminarily studied. Results show that the adsorption of U(VI) on PVPA/pine needle follows pseudo-second-order and Langmuir models, and the maximum adsorption capacity is 111 mg/g at 298 K and pH 8.2.

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Anti-biological contamination strategies for enhanced uranium extraction from seawater

Cited by 19 publications

References 93 publications

Porous Microparticle Preparation via Tuning Electrostatic Breakup Characteristics of a Non-Newtonian Fluid for High-Performance Uranium Extraction

Porous Microparticle Preparation via Tuning Electrostatic Breakup Characteristics of a Non-Newtonian Fluid for High-Performance Uranium Extraction

A Phosphorylated Dendrimer-Supported Biomass-Derived Magnetic Nanoparticle Adsorbent for Efficient Uranium Removal

Application of Natural Antibacterial Plants in the Extraction of Uranium from Seawater

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