Mo (IV) adsorption from nitric acid media by Di-(2-ethylhexyl) phosphoric acid (D2EHPA) coated silanized magnetite nanoparticles

Agarwal, Shilpi; Tyagi, Inderjeet; Gupta, Vinod Kumar; Hanifpour, Fatemeh; Maghsudi, Mehdi; Javadian, Hamedreza

doi:10.1016/j.molliq.2016.02.057

Cited by 15 publications

(10 citation statements)

References 50 publications

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“…In addition, the report precedents for the adsorption of Mo(VI) were presented in Fig. 4(b) 22, 34‐37 …”

Section: Resultsmentioning

confidence: 99%

“…4 (b). 22,[34][35][36][37] It is clear that en-CPT exhibits a higher uptake capacity for Mo(VI) in wastewater than other adsorbents. This is attributed to the cooperation between the hydroxyl groups and the nitrogen-containing functional groups on the en-CPT surface in the adsorption process.…”

Section: Maximum Uptake Capacity Of En-cpt and Ma-cptmentioning

confidence: 99%

“…[13][14][15][16][17] Therefore, many different methods, such as solvent extraction, ion exchange, and adsorption, have been developed to recover Mo(VI) from various aqueous media. [18][19][20][21][22][23][24] Among them, the adsorption method is widely preferred due to its simplicity of operation, low investment, easy regeneration, and effectiveness in dealing with various pollutants.…”

Section: Introductionmentioning

confidence: 99%

“…Molybdenum is one of the strategic metals widely used in anti‐corrosion coatings, lithium ion batteries, and catalysts, and it leads to the drain of natural resources 13‐17 . Therefore, many different methods, such as solvent extraction, ion exchange, and adsorption, have been developed to recover Mo(VI) from various aqueous media 18‐24 . Among them, the adsorption method is widely preferred due to its simplicity of operation, low investment, easy regeneration, and effectiveness in dealing with various pollutants.…”

Section: Introductionmentioning

confidence: 99%

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Hydroxyl‐assisted nitrogen‐containing group modified persimmon tannin with enhanced recovery capacity for Mo(VI) in aqueous solution

Wang

Ren

Lou

et al. 2020

J of Chemical Tech & Biotech

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BACKGROUND: Persimmon tannin, extracted from young astringent persimmons, is a cheap waste biomass material. The abundant phenolic hydroxyl groups in persimmon tannin are known to display excellent affinity to Mo(VI). In addition, ligands containing N donor atoms, as brilliant adsorption groups, can strongly interact with Mo(VI) when the groups are protonated under acidic conditions. Therefore, the introduction of nitrogen-containing groups in persimmon tannin may be an effective method to improve the recovery capacity of biosorbent for Mo(VI) in aqueous solution. In this work, a series of adsorbents were prepared by immobilizing ethylenediamine or methylamine on the surface of persimmon tannin. RESULTS: Due to the abundant nitrogen-containing groups and hydroxyl groups, the ethylenediamine modified persimmon tannin exhibited excellent maximum uptake capacity to Mo(VI) (478.02 mg•g −1), which was superior to that of methylamine modified persimmon tannin. Further, the results of XPS and FT-IR confirmed that Mo(VI) was adsorbed on the hydroxyl-assisted nitrogen-containing group modified persimmon tannin via coordination and electrostatic interaction. CONCLUSION: Furthermore, 99% of Mo(VI) was selectively recovered from coexisting ions by en-CPT under appropriate acidic conditions (pH 1). Pseudo-second-order kinetic model best represented the adsorption process of Mo(VI) onto the en-CPT. The adsorption equilibrium was achieved in a relatively short time (no more than 1 h). High recovery efficiency and excellent selective adsorption made the en-CPT an ideal candidate for Mo(VI) recovery in practical applications.

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“…In addition, the report precedents for the adsorption of Mo(VI) were presented in Fig. 4(b) 22, 34‐37 …”

Section: Resultsmentioning

confidence: 99%

Section: Maximum Uptake Capacity Of En-cpt and Ma-cptmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Hydroxyl‐assisted nitrogen‐containing group modified persimmon tannin with enhanced recovery capacity for Mo(VI) in aqueous solution

Wang

Ren

Lou

et al. 2020

J of Chemical Tech & Biotech

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show abstract

“…Para contornar essas deficiências e obter um material resistente à oxidação e que apresente grande afinidade por substratos, é possível revestir as nanopartículas com uma camada inerte de sílica e, posteriormente, utilizar reações de hidrólise de silanos para obter nanopartículas superparamagnéticas funcionalizadas 26,35,38,39,44,45 . 30,31,[51][52][53][54][55][56][57][58][59] .…”

Section: Funcionalizaçãounclassified

Estudo da extração hidrometalúrgica de matais de transição com nanopartículas superparamagnéticas funcionalizadas

Kaid¹

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Hydrometallurgical processing of strategic elements such as copper and cobalt is a subject of great relevance because of the economical and environmental issues involved. In this thesis, the interaction of superparamagnetic nanoparticles functionalized with ethylenediamine groups with transition metal ions, such as copper(II) and cobalt(II), has been investigated from the physico-chemical point of view, focusing on the adsorption kinetics and complexation equilibrium involved, aiming the understanding of magnetic nanohydrometallurgy applied to those systems. Also investigated was the influence of possible variables, such as the counter ions in solution and the adsorption selectivity observed in the comparison of different metal ions. Special emphasis was applied to the construction of adsorption isotherms using analytical methods (EDX) and zeta potentials measured in situ in aqueous solution. The proposed models in both cases, provided a critical view of the methodologies, showing the contrasts and the special role of the solvodynamic effects associated with the zeta potentials, including the formation of ion pairs at the nanoparticles slipping plane. The possible application of the systems in the development of magnetic affinity chromatography has also been demonstrated in the selective adsorption of mioglobin by the superparamagnetic nanoparticles containing copper ions. The Langmuir isotherm revealed a reversible process, in which the adsorption and desorption steps can be controlled by the pH of the reactional media.

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Removal of Molybdate Ions in Water on a Newly Synthesized Imidazolium‐based Poly (ionic liquid)

Zhao,

Zhang,

et al. 2023

ChemistrySelect

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The natural biological water system has been seriously damaged due to the discharge of wastewater containing too much molybdenum, endangering the life and health of animals and plants. Imidazolium‐based poly (ionic liquid) was synthesized by grafting copolymers of styrene and 1‐(chloromethyl)‐4‐vinylbenzene into N‐methylimidazole, N‐ethylimidazole and N‐propyl imidazole, followed by characterization with the use of nuclear magnetic resonance spectrometer and Fourier transform infrared spectrometer. How the Imidazolium‐based poly (ionic liquid) could recover MoO42− from sewage was investigated. The pH, reaction temperature, reaction duration, adsorbent dose, and interfering ions were all tuned for MoO42− adsorption conditions. Nitric acid can regenerate the Imidazolium‐based poly (ionic liquid) loaded with MoO42−. Both the adsorption kinetics and the adsorption isotherm exhibit good agreement with the quasi second‐order kinetic model and the Langmuir isotherm model, respectively.Imidazolium‐based poly (ionic liquid) have a special reusability when compared to polyaniline‐modified bentonite, iron‐based nanomaterials, and γ‐Fe2O3 nanomaterials. The results reveal that Imidazolium‐based poly (ionic liquid) has a strong recovery effect on trace molybdenum from wastewater, which makes it an effective adsorbent with industrial application value.

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Mo (IV) adsorption from nitric acid media by Di-(2-ethylhexyl) phosphoric acid (D2EHPA) coated silanized magnetite nanoparticles

Cited by 15 publications

References 50 publications

Hydroxyl‐assisted nitrogen‐containing group modified persimmon tannin with enhanced recovery capacity for Mo(VI) in aqueous solution

Hydroxyl‐assisted nitrogen‐containing group modified persimmon tannin with enhanced recovery capacity for Mo(VI) in aqueous solution

Estudo da extração hidrometalúrgica de matais de transição com nanopartículas superparamagnéticas funcionalizadas

Removal of Molybdate Ions in Water on a Newly Synthesized Imidazolium‐based Poly (ionic liquid)

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