Selective separation of V(IV) from its solutions using modified cellulose

Yousif, Ahmed M.; El-Afandy, Adel H.; Dabbour, Galal; Mubark, Amal E.

doi:10.1080/01932691.2020.1844018

Cited by 12 publications

(2 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It has oxidation states ranging from + 1 to + 5, however, it is most typically found in the + 4 as tetravalent vanadyl (VO 2 + ) and in the + 5 states as pentavalent vanadate (HVO 2− 4 , VO − 3 and/or H 2 VO − 4 ) species in natural and biological systems [3,4]. Vanadium may be found in 65 various minerals, including carnotite, vanadinite, and patronite that regarded as an important source of vanadium [5].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Synthesis, Characterization, and Potential Evaluation of Modified Cellulose Immobilized with Hydroxyquinoline as a Sorbent for Vanadium Ions

et al. 2022

Self Cite

View full text Add to dashboard Cite

A considerable increase in the importance of vanadium globally and its common uses in many manufacturable alloys made it a target for much scientific research interested in extraction and recovery. A solid modified cellulose sorbent (GCIHQ) was prepared by simple grafting of cellulose, then immobilized with hydroxyquinoline, and examined as a sorbent for V(V) ions. FT-IR, TGA, BET, and SEM–EDX investigations were used to characterize the GCIHQ. A higher surface area for the synthesized GCIHQ resin has been recorded (65.8 m2/g) more than the used cellulose (21.7m2/g). Several vanadium sorption parameters using the modified GCIHQ from the sulfate medium were optimized namely contact time, pH, initial vanadium ions concentration, sorbent dose, and sorption temperature. The kinetics results revealed that the sorption of vanadium ions upon the synthesized sorbent followed the pseudo-second-order with R2 of > 0.99, which indicated that the sorption mechanism was chemical interaction. The sorption process was studied using Freundlich, Langmuir, Dubinin–Radushkevich, and Temkin isotherm models to describe the adsorbent-adsorbate interaction. The Langmuir model was the most fitting model with the experimental results; the experimental adsorption uptake of 113 mg/g was matched with that of the calculated results. The activation energy (Ea) for adsorption was 12.91 kJ.mol−1, indicating the process is to be chemisorption. Thermodynamic characteristics with ΔH of 13.46 kJ/mol and a ΔS 115.15 J/mol.K revealed the endothermic and spontaneous nature.

show abstract

Section: Introductionmentioning

confidence: 99%

“…Fig 5. Effect of sorbent dose on the adsorption of V(V) ions on GCIHQ (a); Effect of coexisting ions on the adsorption of V(V) ions on GCIHQ (b); Effect of initial concentration on the adsorption of V(V) ions on GCIHQ at different temperature (c)…”

mentioning

confidence: 99%