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- W3008660215 endingPage "122392" @default.
- W3008660215 startingPage "122392" @default.
- W3008660215 abstract "To reduce the toxicity of vanadium(V) [V(V)] and inhibit the desorption of adsorbed vanadium in groundwater, we synthesized nanoscale zerovalent iron (nZVI) dispersed on layered double hydroxide (LDH) composites ([email protected]) to remove V(V) from simulated groundwater. We found that [email protected] could reduce high-valence vanadium to low-valence vanadium, then forming vanadium-containing precipitation to reduce the toxicity and inhibiting vanadium from returning to groundwater. SEM and XRD characterizations exhibited the uniform dispersal of nZVI on the surface of LDH. [email protected] with nZVI/LDH at a mass ratio of 1:2 provided the maximum adsorption capacity of 93.7 mg g−1 at pH 3.0. Coexisting anions and dissolved oxygen in groundwater have little effect on V(V) removal. [email protected] performed well across a wide pH range (3.0–8.0). The surface characterizations and XPS analysis revealed that LDH as supporting materials inhibited the aggregation and passivation of nZVI. The adsorbed V(V) was reduced to V(IV) and V(III) by nZVI and spontaneously transformed into insoluble VO2 and V2O3. The DFT calculations indicated the strong complexation and better stability of the V(IV) and V(III) species with [email protected] than V(V). This work suggests that [email protected] has the potential to serve as an efficient material for the immobilization of V(V) in groundwater." @default.
- W3008660215 created "2020-03-06" @default.
- W3008660215 creator A5001780960 @default.
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- W3008660215 creator A5080305240 @default.
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- W3008660215 creator A5086656726 @default.
- W3008660215 date "2020-06-01" @default.
- W3008660215 modified "2023-10-16" @default.
- W3008660215 title "Enhanced removal of vanadium(V) from groundwater by layered double hydroxide-supported nanoscale zerovalent iron" @default.
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- W3008660215 doi "https://doi.org/10.1016/j.jhazmat.2020.122392" @default.
- W3008660215 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/32208307" @default.
- W3008660215 hasPublicationYear "2020" @default.
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