Effects of speciation on uranium removal efficiencies with polyamine-functionalized silica composite adsorbent in groundwater

Chen, Lifeng; Ning, Shunyan; Huang, Yi‐Lin; Chen, Yanliang; Ju, Zhiping; He, Xianwen; Lu, Lingyu; Hua-long, Zhou; Wang, Xinpeng; Wu, Yan; Wei, Yuezhou

doi:10.1016/j.jclepro.2020.120379

Cited by 28 publications

(4 citation statements)

References 39 publications

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“…Chen et al studied the adsorption behavior of the polyamine- grafted silica composite silicon-based polyamine adsorbent (SAER) on uranium in alkaline solution. This work proved the feasibility of the new silicon-based composite adsorbent to effectively remove uranium from different water matrices [ 19 ].…”

Section: Introductionmentioning

confidence: 78%

Synthesis of Silica-Based Quaternized Adsorption Material and Study on Its Adsorption Behavior for Pu(IV)

Wang¹,

Liu²,

Chang³

et al. 2022

Molecules

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In this research, we explored the synthesis optimization of the silica-based quaternized adsorption material (SG-VTS-VPQ) and its adsorption behavior for Pu(IV). By optimizing the synthesis process, the grafting amount of 4-vinylpyridine reached 1.25 mmol·g−1. According to the analysis of NMR and XPS, the quaternization rate of pyridine groups reached 91.13%. In the adsorption experiments, the thermodynamic experiment results show that the adsorption of Pu(IV) by SG-VTS-VPQ is more in line with the Langmuir adsorption model and the adsorption type is a typical chemical adsorption; the kinetic results show that adsorption process is more in line with the pseudo first-order kinetic model, and the larger specific surface area of SG-VTS-VPQ plays an important role in the adsorption. The results of the adsorption mechanism show that the adsorption of Pu(IV) by SG-VTS-VPQ is mainly complex anion Pu(NO3)62− and Pu(NO3)5−. This research provides in-depth and detailed ideas for the surface modification and application of porous silica gel, and at the same time provides a new way to develop the direction of the analysis of pretreatment materials in the spent fuel reprocessing field.

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Section: Introductionmentioning

confidence: 78%

Synthesis of Silica-Based Quaternized Adsorption Material and Study on Its Adsorption Behavior for Pu(IV)

Wang¹,

Liu²,

Chang³

et al. 2022

Molecules

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“…Uranium and its compounds both emit biologically harmful rays and are chemically toxic. For example, during the Gulf War, U238-based depleted uranium munitions were used, and when they burned, aerosolized uranium oxide and depleted uranium particles entered the interior of the body, causing a dramatic increase in blood disorders and cancer in war-torn areas. − Therefore, it is very valuable to select suitable adsorbent materials with a high sorption capacity to effectively remove uranium from surface water.…”

Section: Study On Adsorption Of Heavy Metal Ions By Chelating Resinmentioning

confidence: 99%

Advances in Chelating Resins for Adsorption of Heavy Metal Ions

Chu

Feng

Liu

et al. 2022

Ind. Eng. Chem. Res.

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Heavy metal ion pollution in water and soil is a formidable environmental problem. Due to their desired heavy metal capture capacity and excellent chemical and physical stability, resin chelating ligands have been widely used in heavy metal adsorption. In this Review, we outline the latest progress in chelating resin adsorbents toward heavy metals. This paper reviews the methods of selectively separating the target ions in various solutions and screens the excellent performances of chelating resins; the types and synthesis methods of chelating resins are also summarized. Different adsorption mechanisms existing between chelating resins and heavy metal ions are summarized, and the influencing factors of the adsorption processes are analyzed. On this basis, we propose the opportunities, challenges, and prospects faced by researchers studying chelating resin materials in the adsorption of heavy metals, and the reasonable design of advanced chelated resin-based adsorption systems should achieve an eco-friendly and sustainable environment.

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“…The adsorption separation behavior of the new material for Sc(III) and Zr(IV) was studied through column experiments, and the results showed that the material exhibited good selective adsorption for Zr(IV) [17]. Chen et al studied the adsorption behavior of polyamine-grafted silica composite material (SAER) for uranium in neutral and weakly acidic solutions, demonstrating the feasibility of the novel silicon-based composite adsorbent to effectively remove uranium from different aqueous matrices [18]. Compared to the organic framework of ion-exchange resins, silica gel has good mechanical properties, acid resistance, and radiation resistance.…”

Section: Introductionmentioning

confidence: 99%

Preparation of Quaternary Ammonium Separation Material based on Coupling Agent Chloromethyl Trimethoxysilane (KH-150) and Its Adsorption and Separation Properties in Studies of Th(IV)

Wang,

Wu,

Liu

et al. 2024

Molecules

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In this research, the authors studied the synthesis of a silicon-based quaternary ammonium material based on the coupling agent chloromethyl trimethoxysilane (KH-150) as well as its adsorption and separation properties for Th(IV). Using FTIR and NMR methods, the silicon-based materials before and after grafting were characterized to determine the spatial structure of functional groups in the silicon-based quaternary ammonium material SG-CTSQ. Based on this, the functional group grafting amount (0.537 mmol·g−1) and quaternization rate (83.6%) of the material were accurately calculated using TGA weight loss and XPS. In the adsorption experiment, the four materials with different grafting amounts showed different degrees of variation in their adsorption of Th(IV) with changes in HNO3 concentration and NO3− concentration but all exhibited a tendency toward anion exchange. The thermodynamic and kinetic experimental results demonstrated that materials with low grafting amounts (SG-CTSQ1 and SG-CTSQ2) tended to physical adsorption of Th(IV), while the other two tended toward chemical adsorption. The adsorption mechanism experiment further proved that the functional groups achieve the adsorption of Th(IV) through an anion-exchange reaction. Chromatographic column separation experiments showed that SG-CTSQ has a good performance in U-Th separation, with a decontamination factor for uranium in Th(IV) of up to 385.1, and a uranium removal rate that can reach 99.75%.

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Effects of speciation on uranium removal efficiencies with polyamine-functionalized silica composite adsorbent in groundwater

Cited by 28 publications

References 39 publications

Synthesis of Silica-Based Quaternized Adsorption Material and Study on Its Adsorption Behavior for Pu(IV)

Synthesis of Silica-Based Quaternized Adsorption Material and Study on Its Adsorption Behavior for Pu(IV)

Advances in Chelating Resins for Adsorption of Heavy Metal Ions

Preparation of Quaternary Ammonium Separation Material based on Coupling Agent Chloromethyl Trimethoxysilane (KH-150) and Its Adsorption and Separation Properties in Studies of Th(IV)

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