New insights on Uranium recovery from seawater and aqueous media

Maaz, Mohamad; Elzein, Tamara; Barroca-Aubry, Nadine; Simoni, E.; Costa, Ludovic; Nsouli, B.; Roger, Philippe

doi:10.1016/j.apmt.2019.100461

Cited by 9 publications

(7 citation statements)

References 24 publications

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“…The degree of grafting was defined by d.g. (%) = ( W g - W 0 )/ W 0 × 100, where W g is the weight of the electrospun fibers after SARA-ATRP grafting and W 0 is the weight of the electrospun fiber before grafting . The (PVC- co -CPVC)- g -PVDPM fibers were hydrolyzed with a 1 M NaOH solution for 24 h at room temperature to obtain (PVC- co -CPVC)- g -PVDPA.…”

Section: Methodsmentioning

confidence: 99%

“…PVDPA has already shown great potential in harvesting uranium from liquid solutions mimicking the composition of seawater. The interaction of free PVDPA with uranium(VI) is described in full in the previously published work . This polymer has high performance for uranium scavenging with a high uptake capacity, not compromised by the high ionic strength and vanadium competition.…”

Section: Introductionmentioning

confidence: 99%

“…but were not tailorable. These industrial fibers showed the faculty to enhance the grafting potential and hence improved the uranium adsorption capacity of the polymer due to their larger surface areas …”

Section: Introductionmentioning

confidence: 99%

“…The interaction of free PVDPA with uranium(VI) is described in full in the previously published work. 8 This polymer has high performance for uranium scavenging with a high uptake capacity, not compromised by the high ionic strength and vanadium competition. However, a better and more effective substrate material is needed to increase its applicability and cost-effectiveness.…”

Section: Introductionmentioning

confidence: 99%

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Surface Grafting of Electrospun Fibers: Multiscale Characterization and Perspective for Potential Applications

Berri

Elzein

Dragoé

et al. 2022

ACS Appl. Polym. Mater.

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In the previous work, the poly(4-vinyl dimethyl dipicolinate) (PVDPM) polymer grafted on poly(vinyl chloride) (PVC) and poly(ethylene terephthalate) (PET) film or industrial fibers proved its efficiency for trapping uranium and many lanthanides in a liquid environment. In this work, we propose to graft our active polymer on fibers obtained by electrospinning to increase the specific surface of our final material. To address this challenge, surface grafting of electrospun chlorinated poly(vinyl chloride) (PVC-co-CPVC) fibers using supplemental activation reducing agent atom transfer radical polymerization (SARA-ATRP) of poly(4-vinyldipicolinic acid) (PVDPA, acid form of PVDPM) were successfully prepared. The (PVC-co-CPVC)-g-PVDPA fibers show a fast increase in the degree of grafting that goes from 54% after 4 h to 369% after 72 h. Further insights demonstrate successful complexation between the new functional electrospun (PVC-co-CPVC)-g-PVDPA fibers and europium, which proves that it could be a potential candidate for scavenging lanthanides or any agent able to interact with ligands (PVDPA), which opens up innovative application perspectives in the field of polymeric materials.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Surface Grafting of Electrospun Fibers: Multiscale Characterization and Perspective for Potential Applications

Berri

Elzein

Dragoé

et al. 2022

ACS Appl. Polym. Mater.

Self Cite

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“…4 In spite of the concentration of UO 2 2+ being extremely low (about 3–9 ppb) in natural seawater, the high total reserves of UO 2 2+ in oceans (about 4.5 billion tons) could provide nuclear power for thousands of years. 5,6 Adsorption is considered as the preferred method for extracting UO 2 2+ from aqueous environments due to its advantages of environmental friendliness, low cost, high efficiency and simple operation. 7 From what has been discussed above, the design and fabrication of highly efficient and selective uranium sorption materials from natural seawater or contaminated seawater have attracted considerable attention.…”

Section: Introductionmentioning

confidence: 99%