Highly efficient removal of uranium from highly acidic media achieved using a phosphine oxide and amino functionalized superparamagnetic composite polymer adsorbent

Zhang, Shiao; Yuan, Dingzhong; Zhang, Qinghua; Wang, Yun; Liu, Yan; Zhao, Jizhou; Chen, Bibo

doi:10.1039/d0ta01633k

Cited by 95 publications

(17 citation statements)

References 58 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…On the opposite hand, some commercial resins show much lower sorption capacities applied for the treatment of very acidic solutions. Sorption capacity does not exceed~0.3 mmol U g −1 for Tulsion CH-96 in 4 M HNO 3 solutions [96], 0.49 mmol U g −1 for Purolite A400 at pH 1.9 [22], or 0.71 mmol U g −1 on magnetic phosphine oxide/amino functionalized sorbent at pH 0.5 [97]. At the pH selected for the current study (i.e., pH 4), the sorption performance for PGG@C and PGG@MC (i.e., 1.15-1.28 mmol U g −1 and 22-47 L mmol −1 ) is consistent with the highest values reported in terms of maximum sorption capacity and affinity coefficient for the most efficient alternative sorbents.…”

Section: Sorption Isothermsmentioning

confidence: 95%

Phosphorylation of Guar Gum/Magnetite/Chitosan Nanocomposites for Uranium (VI) Sorption and Antibacterial Applications

et al. 2021

View full text Add to dashboard Cite

The development of new materials is needed to address the environmental challenges of wastewater treatment. The phosphorylation of guar gum combined with its association to chitosan allows preparing an efficient sorbent for the removal of U(VI) from slightly acidic solutions. The incorporation of magnetite nanoparticles enhances solid/liquid. Functional groups are characterized by FTIR spectroscopy while textural properties are qualified by N2 adsorption. The optimum pH is close to 4 (deprotonation of amine and phosphonate groups). Uptake kinetics are fast (60 min of contact), fitted by a pseudo-first order rate equation. Maximum sorption capacities are close to 1.28 and 1.16 mmol U g−1 (non-magnetic and magnetic, respectively), while the sorption isotherms are fitted by Langmuir equation. Uranyl desorption (using 0.2 M HCl solutions) is achieved within 20–30 min; the sorbents can be recycled for at least five cycles (5–6% loss in sorption performance, complete desorption). In multi-component solutions, the sorbents show marked preference for U(VI) and Nd(III) over alkali-earth metals and Si(IV). The zone of exclusion method shows that magnetic sorbent has antibacterial effects against both Gram+ and Gram- bacteria, contrary to non-magnetic material (only Gram+ bacteria). The magnetic composite is highly promising as antimicrobial support and for recovery of valuable metals.

show abstract

Section: Sorption Isothermsmentioning

confidence: 95%

Phosphorylation of Guar Gum/Magnetite/Chitosan Nanocomposites for Uranium (VI) Sorption and Antibacterial Applications

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Uranium having a great affinity for amine [29][30][31], phosphonic [26,32,33] and amidoxime groups [34][35][36], many resins have been designed by the grafting of these reactive groups on synthetic resins [37] but also on biopolymer-based supports [38,39]. In the current work, magnetic/chitosan nanoparticles decorated with glycidylmethacrylate (GMA) have been functionalized with amine groups (diethylenetriamine, DETA) to prepare GMA-magnetic/chitosan-amine sorbent (R-Amine).…”

Section: Synthesis Of Magnetic Chitosan/gma Compositementioning

confidence: 99%

“…The incorporation of magnetic core in sorbent particles allows the readily recovery of micro-or nanoparticles after sorption step. This facility offers the possibility to manufacture very small particles, which, in turn, minimize the contribution of resistance to intraparticle diffusion in the control of global uptake kinetics [30,31,[40][41][42]. The standard support (GMA-magnetic/chitosan NPs) has also been functionalized using dithizone (diphenylthiocarbazone for producing GMA-magnetic/ chitosan-dithizone NPs, R-Dithizone) for comparison with R-Amine sorbent.…”

Section: Synthesis Of Magnetic Chitosan/gma Compositementioning

confidence: 99%

Effect of agitation mode (mechanical, ultrasound and microwave) on uranium sorption using amine- and dithizone-functionalized magnetic chitosan hybrid materials

Elwakeel

Hamza

Guibal

2021

Chemical Engineering Journal

View full text Add to dashboard Cite

Magnetic chitosan nanoparticles, activated by glycidyl methacrylate, can be functionalized by grafting dieth-ylenetriamine (DETA) and dithizone for improving U(VI) sorption at pH around 5. The physicochemical prop-erties of the materials have been characterized by a wide variety of analytical techniques. Uranyl sorption increases with the pH (progressive deprotonation of amine and sulfur groups). Uptake kinetics are controlled by the agitation mode: the equilibrium time is reduced while using ultrasonic treatment (especially at highest frequency: 80 kHz): the cavitation effect improves the accessibility to internal reactive groups (sorption capacity is increased). The diffusivity coefficient is increased by 4-5 times. In the case of microwave, the sorption capacity is significantly reduced (especially for R-Dithizone, down to 0.8 mmol U g − 1 ) because of temperature increase, which limits the sorption (exothermic mechanism). Mass transfer is tremendously enhanced: equilibrium time is less than 60 s (30 min for ultrasonic treatment and 120 min with mechanical agitation). Sorption capacity at monolayer saturation (Langmuir) decreases with increasing the temperature from 2.20 to 1.74 mmol U g − 1 for R-Amine (from 1.77 to 1.22 mmol U g − 1 for R-Dithizone). The sorption enthalpy is close to − 19.7 kJ mol − 1 for R-Amine (with positive entropy change, ΔS • ) and − 34.2 kJ mol − 1 for R-Dithizone (negative ΔS • ). Metal desorption is highly efficient using 0.3 M Na 2 CO 3 /0.1 M H 2 O 2 solution. Metal desorption is instantaneous (less than 1 min) and complete when using microwave treatment. The ultrasonic treatment allows improving desorption efficiency and decreasing the concentration of the eluent compared with mechanical agitation. The process is successfully applied for uranyl separation from the leachates of marine sediments, especially in the presence of Complexon III (masking agent).

show abstract

“…Adsorption has demonstrated sufficiently to be a facile and effective strategy to separate uranium, which promotes the designing and preparation of highperformance adsorbents. To date, many adsorbents from different sources have been developed and applied for uranium capture, including clays, polymers, activated carbons, magnetic nanocomposites, metal-organic frameworks, and mesoporous materials [7][8][9][10][11][12][13][14][15][16]. However, it is still a great challenge to develop effective and inexpensive adsorbents.…”

Section: Introductionmentioning

confidence: 99%

Hexagonal Cylinder Mesoporous Sorbent for Separation of Uranium Ions from Nitrate Media

Elshehy

2021

Chem Eng & Technol

View full text Add to dashboard Cite

The synthesis of mesoporous silica monoliths-based phosphonate groups (SiO 2 -DPTS) through immobilization of diethylphosphatoethyltriethoxysilane using the post-grafting approach to be applied as a sensitive sorbent for selective separation of U(IV) ions from aqueous solutions is described. The designed SiO 2 -DPTS sorbent was characterized by Fourier transform infrared, scanning electron and highresolution transmission electron microscopy, scanning transmission electron microscopy/energy-dispersive X-ray spectroscopy, N 2 adsorption-desorption, and elemental analysis. The adsorption process was studied under different experimental conditions of pH, concentration, and time. The mechanism of interaction of SiO 2 -DPTS with U(VI) ions was explored and supported by density functional theory (DFT) calculations. This synthesized sorbent allows highly efficient extraction of U(IV) ions from uranyl leach liquor.

show abstract

Highly efficient removal of uranium from highly acidic media achieved using a phosphine oxide and amino functionalized superparamagnetic composite polymer adsorbent

Abstract: The magnetic adsorbent Fe3O4/P(DMAA–DMP) prepared by distillation-precipitation polymerization not only showed an outstanding adsorption efficiency for uranium in highly acidic solution, but had an excellent acid resistance.

Cited by 95 publications

References 58 publications

Phosphorylation of Guar Gum/Magnetite/Chitosan Nanocomposites for Uranium (VI) Sorption and Antibacterial Applications

Phosphorylation of Guar Gum/Magnetite/Chitosan Nanocomposites for Uranium (VI) Sorption and Antibacterial Applications

Effect of agitation mode (mechanical, ultrasound and microwave) on uranium sorption using amine- and dithizone-functionalized magnetic chitosan hybrid materials

Hexagonal Cylinder Mesoporous Sorbent for Separation of Uranium Ions from Nitrate Media

Contact Info

Product

Resources

About