Enhanced removal of uranium(VI) from aqueous solution by a novel Mg-MOF-74-derived porous MgO/carbon adsorbent

Lv, Zhimin; Wang, Haiyan; Chen, Changlun; Yang, Shimin; Chen, Lei; Alsaedi, Ahmed; Hayat, Tasawar

doi:10.1016/j.jcis.2018.11.062

Cited by 170 publications

(46 citation statements)

References 45 publications

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“…HKUST-1 is formed by the coordination of 1,3,5-benzentricarboxylate (BTC) ligand with Cu(II), and each BTC ligand contains three carboxyl groups. These carboxyl groups contain a large number of oxygen atoms, which provide coordination sites for U(VI), so U(VI) is mainly adsorbed by the -COOH chelating effect ( Liu et al., 2020 ; Lv et al., 2019 ). Compared with divalent metal ions such as Co(II) and Ni(II), U(VI) is a stronger Lewis acid and thus has a higher affinity with hard oxygen donors such as carboxyl groups ( Yang et al., 2019 ).…”

Section: Resultsmentioning

confidence: 99%

Hydrolytically stable foamed HKUST-1@CMC composites realize high-efficient separation of U(VI)

et al. 2021

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Summary HKUST-1@CMC (HK@CMC) composites that show good acid and alkali resistance and radiation resistance were successfully synthesized by introducing carboxymethyl cellulose (CMC) onto the surface of HKUST-1 using a foaming strategy. For the first time, the composites were explored as efficient adsorbents for U(VI) trapping from aqueous solution, with encouraging results of large adsorption capacity, fast adsorption kinetics, and desirable selectivity toward U(VI) over a series of competing ions. More importantly, a hybrid derivative film was successfully prepared for the dynamic adsorption of U(VI). The results show that ∼90% U(VI) can be removed when 45 mg L −1 U(VI) was passed through the film one time, and the removal percentage is still more than 80% even after four adsorption-desorption cycles, ranking one of the most practical U(VI) scavengers. This work offers new clues for application of the Metal-organic-framework-based materials in the separation of radionuclides from wastewater.

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Section: Resultsmentioning

confidence: 99%

Hydrolytically stable foamed HKUST-1@CMC composites realize high-efficient separation of U(VI)

et al. 2021

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“…Mg-MOF-74 is another template for using carbonization studies. Lv et al [32] carried out the calcination at 800°C for 1 hour, under inert conditions. The product was Nanoporous Carbon Composites for Water Remediation DOI: http://dx.doi.org/10.5772/intechopen.91355…”

Section: Application Areas Of Nanoporous Carbon Compositesmentioning

confidence: 99%

Nanoporous Carbon Composites for Water Remediation

Cagnon¹,

Secula²,

Bayazit³

2020

Carbon-Based Material for Environmental Protection and Remediation

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Metal-organic frameworks (MOFs) are known for their superior surface properties such as surface area and porosity. Thermal decomposition of MOFs may lead to nanoporous carbon composites. These composites can be further used in various application areas. Environmental remediation is one of the most popular areas for using these composites. Nowadays, nanoporous carbon composites are used generally in supercapacitors, lithium-ion batteries, and sensors. Besides the aforementioned application areas, these materials can be used as adsorbents, photocatalysts, and nanomotors. In this review, the preparation methods of nanoporous carbon materials will be explained and their use in environmental remediation will be summarized. The future perspectives of nanoporous carbon composites will be also discussed.

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“…However, significant environmental impact may occur if the radioactive elements in the spent nuclear fuel (SNF) wastewater are not properly disposed of. Among those radioactive elements, uranium (U) is the most used for nuclear energy generation 1,2 . Exploitation and utilization of U resource including U mining, smelting, purification and nuclear components processing may increase the risk of radioactive U leaks.…”

Section: Introductionmentioning

confidence: 99%

“…Among those radioactive elements, uranium (U) is the most used for nuclear energy generation. 1,2 Exploitation and utilization of U resource including U mining, smelting, purification and nuclear components processing may increase the risk of radioactive U leaks. The uncontrolled release of radioactive U into water bodies can cause severe environmental effects and poses a significant threat to ecosystems and human health.…”

Section: Introductionmentioning

confidence: 99%

Efficient electrosorption of uranyl ions by a homemade amidoxime‐modified carbon paper‐based electrode in acidic aqueous condition

Pan

Zhang

et al. 2021

J of Chemical Tech & Biotech

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BACKGROUND Electrosorption efficiency for uranyl ion (UO22+) capture is low in acid solution due to the adverse effect caused by protons. This requires novel electrodes effective at acid conditions for UO22+ electrosorption in highly acidic industrial effluents such as spent nuclear fuel treatment. RESULTS In the current study, UO22+ electrosorption was conducted using an amidoxime‐modified carbon paper (CP‐AO) electrode. The effects of voltage and frequency, pH, UO22+ initial concentration, and competing ions on UO22+ electrosorption were investigated. The reusability and electrochemical properties of the CP‐AO electrode were studied. The experimental results showed that the current CP‐AO electrode worked well in acidic conditiona (pH = 3) with a square wave periodic voltage (SWPV, −4 V, 1000 Hz), and outperformed a previously used carbon felt‐based electrode. The CP‐AO electrode showed considerable selectivity toward UO22+ in the presence of competitive ions. After seven rounds of continuous electrosorption–desorption, the CP‐AO electrode still showed good UO22+ uptake efficiency. The electrosorption mechanisms were studied in‐depth based on experimental and characterization results. The electrosorption of UO22+ by the CP‐AO electrode was due mainly to the electric field force moving UO22+ to the surface of the electrode, leading to electrodeposition of uranium compounds and the formation of electrically neutral substances. CONCLUSIONS The results indicated that based on SWPV electrosorption the CP‐AO could be a desirable treatment approach for acidic uranium‐containing wastewater with promising practical applications.

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Enhanced removal of uranium(VI) from aqueous solution by a novel Mg-MOF-74-derived porous MgO/carbon adsorbent

Cited by 170 publications

References 45 publications

Hydrolytically stable foamed HKUST-1@CMC composites realize high-efficient separation of U(VI)

Hydrolytically stable foamed HKUST-1@CMC composites realize high-efficient separation of U(VI)

Nanoporous Carbon Composites for Water Remediation

Efficient electrosorption of uranyl ions by a homemade amidoxime‐modified carbon paper‐based electrode in acidic aqueous condition

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