The Removal of Uranium and Thorium from Their Aqueous Solutions by 8-Hydroxyquinoline Immobilized Bentonite

Salah, Bahaa Ahmed; Gaber, Mohmed Soliman; Kandil, Abdel hakim T.

doi:10.3390/min9100626

Cited by 34 publications

(9 citation statements)

References 39 publications

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“…The BT powder showed an initial basal spacing ( d 001 ) of 12.2 Å and several characteristic diffraction peaks of montmorillonite at 7°, 20°, 29°, 35°, and quartz at 27°. [ 41 ] The BT crystals in all the WiSCEs possessed the same d 001 of 18.9 Å after water intercalation, corresponding to an enlarged interlayer spacing from 2.6 to 9.3 Å (Figure S8, Supporting Information). [ 42 ] This is in good agreement with the phenomenon observed in prior work, in which the swelling of BT crystals reached equilibrium with a d 001 of ≈19.0 Å when the water content exceeded the threshold of 28.6 wt.%.…”

Section: Resultsmentioning

confidence: 99%

A Low‐Cost Quasi‐Solid‐State “Water‐in‐Swelling‐Clay” Electrolyte Enabling Ultrastable Aqueous Zinc‐Ion Batteries

Tian

Hwang

Estalaki

et al. 2023

Advanced Energy Materials

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The poor reversibility of Zn metal anodes arising from water‐induced parasitic reactions poses a significant challenge to the practical applications of aqueous zinc‐ion batteries (AZIBs). Herein, a novel quasi‐solid‐state “water‐in‐swelling‐clay” electrolyte (WiSCE) containing zinc sulfate and swelling clay, bentonite (BT), is designed to enable highly reversible Zn metal anodes. AZIB full cells based on the WiSCE exhibit excellent cyclic stability at various current densities, long shelf life, low self‐discharge rate, and outstanding high‐temperature adaptability. Particularly, the capacity of WiSCE‐based AZIB full cells retains 90.47% after 200 cycles at 0.1 A g−1, 96.64% after 2000 cycles at 1 A g−1, and 88.29% after 5000 cycles at 3 A g−1. Detailed density functional theory calculations show that strong hydrogen bonds are formed between BT and water molecules in the WiSCE. Thus, water molecules are strongly confined by BT, particularly within the interlayers, which significantly inhibits water‐induced parasitic reactions and greatly improves cyclic stability. Compared to the state‐of‐the‐art “water‐in‐salt” electrolytes, the WiSCE can provide a significantly higher capacity at the full‐cell level with a substantially reduced cost, which is promising for the design of next‐generation high‐performance AZIBs. This work provides a new direction for developing cost‐competitive AZIBs as alternatives to grid‐scale energy storage.

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Section: Resultsmentioning

confidence: 99%

A Low‐Cost Quasi‐Solid‐State “Water‐in‐Swelling‐Clay” Electrolyte Enabling Ultrastable Aqueous Zinc‐Ion Batteries

Tian

Hwang

Estalaki

et al. 2023

Advanced Energy Materials

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“…The band at 1428.18 cm −1 corresponds to the bending vibration of the Al-OH and Si-OH bonds in the octahedral and tetrahedral sheets of the bentonite structure. The absorption bands between 3392.58 cm −1 could be ascribed to stretching vibrations of structural OH-stretching vibrations that have Al and Mg coordination groups with octahedral layer of montmorillonite and water [45]. The broad infrared spectroscopy bond-stretching peak between 3693.93 and 1630.21 cm −1 wave numbers (Fig.…”

Section: Ft-ir Spectroscopymentioning

confidence: 96%

Optimization study of the adsorption of malachite green removal by MgO nano-composite, nano-bentonite and fungal immobilization on active carbon using response surface methodology and kinetic study

Hamad

2023

Environ Sci Eur

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Malachite green a typical organic dye containing triarylmethane, is discharged in wastewater by textile and leather manufacturing plants. MG can pollute the environment, and it represents a major hazard to humans and various living organisms. We have thus worked toward developing the optimum dye-absorptive material, which should possess the following characteristics: excellent adsorption capacity, good selectivity, favorable recycling and reuse potential, and ease and quickness of adsorption. In this study, nano-bentonite, novel hybrid MgO-impregnated clay, and fungal composites were synthesized for Malachite green removal from aqueous solution. Response surface methodology (RSM) was used for the optimization of the synthesis of adsorbents to achieve simultaneous maximum malachite green removal. The composites were characterized by Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM) and X-ray diffraction (XRD). According to the obtained results, MgO-impregnated clay exhibits a exhibited a higher adsorption capacity of MG than nano-bentonite and pure bentonite. The malachite green adsorption isotherm on MgO-impregnated clay corresponded with the Freundlich isotherm. However, the Langmuir adsorption isotherm was a superior fit for nano-bentonite. The adsorption activities of nano-bentonite and MgO-impregnated clay were fitted into a pseudo-second-order kinetic model. Based on the root-mean-square error, bias, and accuracy, statistical research has shown that the Halden model has optimal accuracy. In addition, despite being recycled numerous times, the adsorbent maintained its high structural stability and removal effectiveness for nano-bentonite (94.5–86%) and MgO-impregnated clay (92–83%).

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“…The existence of interlayer water in the WiSCEs was evidenced by X-ray diffraction (XRD) tests, as shown in Figure 2b. The BT powder showed an initial basal spacing (d001) of 12.2 Å and several characteristic diffraction peaks of montmorillonite at 7 °, 20 °, 29 °, 35 ° and quartz at 27 ° [49].…”

Section: Electrolyte Properties and Structuresmentioning

confidence: 99%

Quasi-Solid-State “Water-in-Swelling-Clay” Electrolytes Enabling Ultrastable Aqueous Zinc-Ion Batteries

Tian

Hwang

Estalaki

et al. 2023

Preprint

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The poor reversibility of Zn metal anodes arising from water-induced parasitic reactions poses a significant challenge to the practical applications of aqueous zinc-ion batteries (AZIBs). Herein, a novel quasi-solid-state water-in-swelling-clay electrolyte (WiSCE) containing zinc sulfate and swelling clay bentonite (BT) is designed to enable highly reversible Zn metal anodes. AZIB full 2 cells based on the WiSCE exhibit excellent cyclic stability at various current densities, long shelf life, low self-discharge rate, and outstanding high-temperature adaptability. Particularly, the capacity of WiSCE-based AZIB full cells retains 90.47% after 200 cycles at 0.1 A/g, 96.64% after 2000 cycles at 1 A/g, and 88.29% after 5000 cycles at 3 A/g. Detailed density functional theory calculations show that strong hydrogen-bonds are formed between BT and water molecules in the WiSCE. Thus, water molecules are strongly confined by BT particularly within the interlayers, which significantly inhibits water-induced side reactions and thus greatly improves cyclic stability. Compared to the state-of-the-art water-in-salt electrolyte, the WiSCE can provide a significantly higher capacity at the full-cell level with a substantially reduced cost, which is promising for the design of next-generation high-performance AZIBs. This work provides a new direction for developing cost-competitive AZIBs as alternatives in grid-scale energy storage.

show abstract

The Removal of Uranium and Thorium from Their Aqueous Solutions by 8-Hydroxyquinoline Immobilized Bentonite

Cited by 34 publications

References 39 publications

A Low‐Cost Quasi‐Solid‐State “Water‐in‐Swelling‐Clay” Electrolyte Enabling Ultrastable Aqueous Zinc‐Ion Batteries

A Low‐Cost Quasi‐Solid‐State “Water‐in‐Swelling‐Clay” Electrolyte Enabling Ultrastable Aqueous Zinc‐Ion Batteries

Optimization study of the adsorption of malachite green removal by MgO nano-composite, nano-bentonite and fungal immobilization on active carbon using response surface methodology and kinetic study

Quasi-Solid-State “Water-in-Swelling-Clay” Electrolytes Enabling Ultrastable Aqueous Zinc-Ion Batteries

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