Developing effective adsorbents for uranium extraction from natural seawater is strategically significant for the sustainable fuel supply of nuclear energy. Herein, stable and low-cost supramolecular complexes (PA-bPEI complexes) were facilely constructed through the assembly of phytic acid and hyperbranched polyethyleneimine based on the multiple modes of electrostatic interaction and hydrogen bonding. The PA-bPEI complexes exhibited not only high uptake (841.7 mg g) and selectivity (uranium/vanadium selectivity = 84.1) toward uranium but also good antibacterial ability against biofouling. Mechanism analysis revealed that phosphate chelating groups and amine assistant groups coordinated the uranyl ions together with a high affinity. To be more suitable for practical applications, powdery PA-bPEI complexes were compounded with sodium alginate to fabricate various macroscopic adsorbents with engineered forms, which achieved an extraction capacity of 9.0 mg g in natural seawater after 50 days of testing. Impressively, the estimated economic cost of the macroscopic adsorbent for uranium extraction from seawater ($96.5 ∼ 138.1 kg uranium) was lower than that of all currently available uranium adsorbents. Due to their good uranium extraction performance and low economic cost, supramolecular complex-based adsorbents show great potential for industrial uranium extraction from seawater.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.jcis.2024.04.171 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Ocean wave-driven covalent organic framework/ZnO heterostructure composites for piezocatalytic uranium extraction from seawater.
Nat Commun
January 2025
National Key Laboratory of Uranium Resource Exploration-Mining and Nuclear Remote Sensing, East China University of Technology, Nanchang, 330013, China.
Piezoelectric catalysis possesses the potential to convert ocean wave energy into and holds broad prospects for extracting uranium from seawater. Herein, the Z-type ZnO@COF heterostructure composite with excellent piezoelectric properties was synthesized through in situ growth of covalent organic frameworks (COFs) on the surface of ZnO and used for efficient uranium extraction. The designed COFs shell enables ZnO with stability, abundant active sites and high-speed electron transport channels.
View Article and Find Full Text PDFSynthesis mechanisms, property characterization, and environmental applications of biogenic FeS: A review.
Water Res
January 2025
Baohang Environment Co., LTD, Beijing 100070, China. Electronic address:
Iron sulfide (FeS) exhibits superior reactivity toward a wide range of contaminants, making it a promising candidate for environmental remediation in various media, including surface water, wastewater, soil, and groundwater. Driven by green and sustainable development principles, efficient, low-cost, and environmentally friendly biosynthesis has attracted considerable attention and has great environmental remediation potential. This review provides a comprehensive overview of the recent advances in biogenic FeS (bio-FeS), focusing on its synthesis mechanisms, performance characterization, and environmental applications.
View Article and Find Full Text PDFFully biobased and robust antibacterial cellulose aerogel for uranium extraction.
Int J Biol Macromol
January 2025
Qingdao New Energy Shandong Laboratory, Shandong Energy Institute, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, China.
Developing efficient adsorbent is imperative for the utilization of uranium resources in seawater. Marine microorganisms and bacteria play an important role in the process of adsorption of uranium. In this work, a completely bio-based antimicrobial aerogel (quaternary cellulose/chitosan aerogel-QCNF/CS) was prepared by cross-linking quaternary cellulose nanofibers (QCNF) and chitosan (CS) via citric acid (CA).
View Article and Find Full Text PDFCombining Electrosorption and Electrochemical Reduction Mechanisms for Uranium Removal Using 1,2,3,4-Butane Tetracarboxylic Acid-Modified MIL-101: An In-Depth Exploration of Uranyl-Adsorbent Interactions.
Inorg Chem
January 2025
State Key Laboratory of Nuclear Resources and Environment, East China University of Technology, Nanchang, Jiangxi 330013, China.
Extracting uranium from nuclear wastewater is vital for environmental and human health protection. However, despite progress in uranium extraction, there remains a demand for an optimized adsorbent with improved capability, efficiency, and selectivity. To bridge this gap, 1,2,3,4-butane tetracarboxylic acid (BTCA)-modified MIL-101 was synthesized through a simple hydrothermal reaction between amino-modified MIL-101 (MIL-101-NH) and BTCA.
View Article and Find Full Text PDFLate modern war and the : The ecological 'beforemaths' of advanced military technologies.
Secur Dialogue
February 2025
Purdue University, USA.
This article develops the idea that late modern war's relationship with the (the ground and the life it sustains) is doubly destructive. While part of this is recognized in a recent focus on slow violence and ecological aftermaths, there is little consideration of the 'beforemath', or the sites of extraction that make advanced military technologies possible. Drawing attention to mining in the Democratic Republic of the Congo (DRC), the article connects military technologies to arms manufacturers and their use of extracted minerals (e.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!