Recycle of U(VI) from aqueous solution by situ phosphorylation mesoporous carbon

Zou, Yidong; Cao, Xiaohong; Luo, Xuanping; Liu, Yan; Hua, Rong; Liu, Yunhai; Zhang, Zhibin

doi:10.1007/s10967-015-4133-2

Cited by 52 publications

(31 citation statements)

References 39 publications

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“…This indicates that the U(VI) adsorption process is a chemisorption process, which is thought to be the monodentate coordination of phosphonyl oxygen and UO 2 2+ [ 36 ], and the uptake of U(VI) occurs on a homogeneous surface by monolayer adsorption. This result was well consistent with those of phosphate-based mesoporous carbon [ 21 ], polyethylene fiber [ 37 ], and mesoporous silica [ 38 ]. The U(VI) adsorption capacity of UHMWPE-g-PO 4 fiber (D PO : 2.01 mmol∙g −1 ) reached 110.7 mg∙g −1 in carbonate solution containing F − ions, indicating its potential application for the efficient removal of U(VI) from alkaline rich effluent or the other contaminated aqueous medium.…”

Section: Discussionsupporting

confidence: 88%

“…Table 4 shows the U(VI) adsorption capacity of UHMWPE-g-PO 4 fibers, compared with the other kinds of phosphate-based or phosphonic acid-based adsorbents. The UHMWPE-g-PO 4 fibers present a good adsorption capacity for extracting U(VI) from a carbonate solution containing F − ions, and can be comparable with those adsorbents with phosphate or phosphonic acid groups [ 17 , 20 , 21 , 39 ], extracting U(VI) from aqueous or carbonate solutions without the presence of F − ions. However, the U(VI) adsorption capacity of UHMWPE-g-PO 4 fibers is lower than those of phosphate-based polyethylene fiber [ 37 ] and mesoporous silica [ 38 ], and phosphonic acid-based mesoporous silica [ 40 ].…”

Section: Discussionmentioning

confidence: 96%

“…Adsorbents with phosphonic acid functionality are widely used for the extraction and the separation of lanthanides and actinides, since phosphonic acid groups can form stable complexes with them [ 17 ]. Research has been conducted on the recovery of uranium species from aqueous phases by sorbent-tethered phosphonic acid groups, e.g., phosphonic acid-based mesoporous silica [ 17 , 18 ] and poly(styrene-co-divinylbenzene) [ 19 ], vinylphosphonic acid grafted poly(vinyl alcohol) fibers [ 20 ], phosphate-based mesoporous carbon [ 21 ], and poly(ethylene glycol methacrylate phosphate) grafted polypropylene membrane [ 22 ]. However, it is difficult to find a technically and economically feasible sorbent, fabricated in a simple way using inexpensive precursors, that can be considered as a potential sorbent for recovering uranium from wastewater.…”

Section: Introductionmentioning

confidence: 99%

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Phosphate-Based Ultrahigh Molecular Weight Polyethylene Fibers for Efficient Removal of Uranium from Carbonate Solution Containing Fluoride Ions

Zhang

et al. 2018

Molecules

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This work provides a cost-effective approach for preparing functional polymeric fibers used for removing uranium (U(VI)) from carbonate solution containing NaF. Phosphate-based ultrahigh molecular weight polyethylene (UHMWPE-g-PO4) fibers were developed by grafting of glycidyl methacrylate, and ring-opening reaction using phosphoric acid. Uranium (U(VI)) adsorption capacity of UHMWPE-g-PO4 fibers was dependent on the density of phosphate groups (DPO, mmol∙g−1). UHMWPE-g-PO4 fibers with a DPO of 2.01 mmol∙g−1 removed 99.5% of U(VI) from a Na2CO3 solution without the presence of NaF. In addition, when NaF concentration was 3 g∙L−1, 150 times larger than that of U(VI), the U(VI) removal ratio was still able to reach 92%. The adsorption process was proved to follow pseudo-second-order kinetics and Langmuir isotherm model. The experimental maximum U(VI) adsorption capacity (Qmax) of UHMWPE-g-PO4 fibers reached 110.7 mg∙g−1, which is close to the calculated Qmax (117.1 mg∙g−1) by Langmuir equation. Compared to F−, Cl−, NO3−, and SO42− did not influence U(VI) removal ratio, but, H2PO4− and CO32− significantly reduced U(VI) removal ratio in the order of F− > H2PO4− > CO32−. Cyclic U(VI) sorption-desorption tests suggested that UHMWPE-g-PO4 fibers were reusable. These results support that UHMWPE-g-PO4 fibers can efficiently remove U(VI) from carbonate solutions containing NaF.

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Section: Discussionsupporting

confidence: 88%

Section: Discussionmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

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Phosphate-Based Ultrahigh Molecular Weight Polyethylene Fibers for Efficient Removal of Uranium from Carbonate Solution Containing Fluoride Ions

Zhang

et al. 2018

Molecules

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“…It could provide an important driving force to overcome all mass transfer resistance of uranium between the aqueous and solid phases [21]. The effect of the initial uranium(VI) concentration on the adsorption removal efficiency was studied by contacting a fixed mass of HCC and HCC-Fe 3 O 4 (10 mg) at a fixed temperature (25°C) and initial pH (7.0) using a range of initial uranium(VI) concentration (10,20,30,50,60,70,80 and 90 mg/L).…”

Section: Effect Of Initial Uranium(vi) Concentrationmentioning

confidence: 99%

Adsorption of uranium(VI) from aqueous solution using a novel magnetic hydrothermal cross-linking chitosan

Dai

Cao

et al. 2016

J Radioanal Nucl Chem

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The magnetic hydrothermal cross-linking chitosan (HCC-Fe 3 O 4 ) was prepared by hydrothermal carbonization and was characterized by FT-IR, X-ray diffraction and scanning electron microscopy. The as-prepared HCC-Fe 3 O 4 was used as adsorbent to remove uranium(VI) as functions of contact time, pH, temperature and initial uranium(VI) concentration batch wise. The results indicated that the magnetic HCC-Fe 3 O 4 was favorate for solid-liquid separation and the maximum uranium(VI) adsorption capacity was 263.1 mg/g at pH 7.0 and 25°C. The adsorption isotherm of uranium(VI) was well fitted by the Langmuir model. The adsorption is a chemical reaction in nature proved by the well described with pseudo-secondorder model. The obtained thermodynamics parameters of positive DH, positive DS, and negative DG denoted the adsorption was an endothermic, disorder increasement, and spontaneous process. These results demonstrated that HCC-Fe 3 O 4 was a promising adsorbent for the enrichment of uranium(VI) from aqueous solutions.

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“…The phosphoric acid group has strong coordination ability with uranyl ions. By loading titanium dioxide on NH 2 ‐MIL‐125 and phosphorylating it in situ, the functionally improved phosphorylated NH 2 ‐MIL‐125@titanium dioxide was obtained, and the adsorption performance of the material for uranyl ions in aqueous solution was explored…”

Section: Introductionmentioning

confidence: 99%

Synthesis of NH₂‐MIL‐125/NH₂‐MIL‐125‐P@TiO₂ and Its Adsorption to Uranyl Ions

et al. 2019

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Pollution in nuclear industry is a difficult problem to solve. To solve this problem, we synthesized the NH2‐MIL‐125 modified materials (MIL‐125‐P@TiO2) by hydrothermal synthesis and also investigated the adsorption properties of uranyl ions. To improve the adsorbability of materials, we loaded titanium dioxide and phosphorylate it. The materials were characterized by means of XRD, SEM, infrared, thermogravimetric and XPS. The adsorption properties of uranyl ions on the two materials were studied by batch adsorption experiments. The results showed that the maximum adsorption capacity of modified material is 333.62 mg/g and 614.82 mg/g at 25 degrees Celsius by fitting the Langmuir model respectively, and the modified material has a better adsorption ability at 25 degrees Celsius with initial uranium concentration at 100 mg/L.

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Recycle of U(VI) from aqueous solution by situ phosphorylation mesoporous carbon

Cited by 52 publications

References 39 publications

Phosphate-Based Ultrahigh Molecular Weight Polyethylene Fibers for Efficient Removal of Uranium from Carbonate Solution Containing Fluoride Ions

Phosphate-Based Ultrahigh Molecular Weight Polyethylene Fibers for Efficient Removal of Uranium from Carbonate Solution Containing Fluoride Ions

Adsorption of uranium(VI) from aqueous solution using a novel magnetic hydrothermal cross-linking chitosan

Synthesis of NH₂‐MIL‐125/NH₂‐MIL‐125‐P@TiO₂ and Its Adsorption to Uranyl Ions

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Recycle of U(VI) from aqueous solution by situ phosphorylation mesoporous carbon

Cited by 52 publications

References 39 publications

Phosphate-Based Ultrahigh Molecular Weight Polyethylene Fibers for Efficient Removal of Uranium from Carbonate Solution Containing Fluoride Ions

Phosphate-Based Ultrahigh Molecular Weight Polyethylene Fibers for Efficient Removal of Uranium from Carbonate Solution Containing Fluoride Ions

Adsorption of uranium(VI) from aqueous solution using a novel magnetic hydrothermal cross-linking chitosan

Synthesis of NH2‐MIL‐125/NH2‐MIL‐125‐P@TiO2 and Its Adsorption to Uranyl Ions

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Product

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Synthesis of NH₂‐MIL‐125/NH₂‐MIL‐125‐P@TiO₂ and Its Adsorption to Uranyl Ions