Novel ionic liquid-modified polymers for highly effective adsorption of heavy metals ions

Wieszczycka, Karolina; Filipowiak, Kinga; Wojciechowska, Irmina; Aksamitowski, Przemysław

doi:10.1016/j.seppur.2019.116313

Cited by 52 publications

(16 citation statements)

References 37 publications

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“…Recovery of toxic metals from wastewaters is one of the needs of environmental refinement done by various processes 10 – 14 . The use of the solvent extraction process has expanded with environmentally friendly solvents 15 , 16 . But the solvent type alone is not enough to achieve the desirability, and the selected equipment must have a good performance 17 .…”

Section: Introductionmentioning

confidence: 99%

Recycling of zinc ions in disc-donut column considering forward mixing mass transfer, and effects of pulsed and non-pulsed condition

Asadollahzadeh

Torkaman

Torab‐Mostaedi

et al. 2022

Sci Rep

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The current study focuses on the recovery of zinc ions by solvent extraction in the pulsed contactor. The Zn(II) ions from chloride solution were extracted into the organic phase containing di-(2-ethylhexyl) phosphoric acid (D2EHPA) extractant. The resulting data were characterized for the relative amount of (a) pulsed and no-pulsed condition; and (b) flow rate of both phases. Based on the mass balance equations for the column performance description, numerical computations of mass transfer in a disc-donut column were conducted and validated the experimental data for zinc extraction. Four different models, such as plug flow, backflow, axial dispersion, and forward mixing were evaluated in this study. The results showed that the intensification of the process with the pulsed condition increased and achieved higher mass transfer rates. The forward mixing model findings based on the curve fitting approach validated well with the experimental data. The results showed that an increase in pulsation intensity, as well as the phase flow rates, have a positive impact on the performance of the extractor. In contrast, the enhancement of flow rate led to the reduction of the described model parameters for the adverse phase.

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Section: Introductionmentioning

confidence: 99%

Recycling of zinc ions in disc-donut column considering forward mixing mass transfer, and effects of pulsed and non-pulsed condition

Asadollahzadeh

Torkaman

Torab‐Mostaedi

et al. 2022

Sci Rep

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“…The poly(vinylbenzyl chloride-co-divinylbenzene) (VBC) was prepared according to the procedure described in [ 32 ]. After the washing and drying procedure, the VBC beads reacted with the equimolar amount of LiBr in tetrahydrofuran as a diluent.…”

Section: Methodsmentioning

confidence: 99%

Novel Polymer Sorbents with Imprinted Task-Specific Ionic Liquids for Metal Removal

et al. 2021

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In this paper, the potential of novel polymer sorbents with the imprinted IL-functional group for the removal of Cu(II), Cd(II), and Zn(II) from aqueous solutions was investigated by batch mode. The sorbents were fabricated by direct reaction of the prepared polymer matrix (poly(vinylbenzyl chloride-divinylbenzene), VBC, and poly(vinylbenzyl bromide-divinylbenzene), VBBr) with 1-(3- or 4-pyridyl)undecan-1-one and oxime of 1-(3- or 4-pyridyl)undecan-1-one. The Fourier Transform Infrared Spectroscopy (FT-IR), Raman Spectroscopy (Raman), Thermogravimetric Analysis (TG), Differential Scanning Calorimetry (DSC), and Scanning Electron Microscopy (SEM) techniques were used to show functionality and stability of the sorbents. The materials were also characterized by contact-angle goniometry, X-rayphotoelectron spectroscopy (XPS), and Zeta potential analysis. The removal of Cd(II), Cu(II), and Zn(II) was monitored and optimized under the influence of several operational controlling conditions and factors such as pH, shaking time, temperature, initial metal ions concentration, and counter-ions at the functional group. The results obtained confirmed the very high potential of the sorbents; however, the properties depend on the structure of the functional group. The tested sorbents showed fast kinetics, significant capacity at 25 °C (84 mg/g for the Zn(II) sorption with VBC-Ox4.10, 63 mg/g for the Cd(II) sorption with VBBr-Ox3.10, and 69 mg/g for the Cu(II) sorption with VBC-K3.10), and temperature dependence (even 100% increase in capacity values at 45 °C). The selected sorbent can be regenerated without a significant decrease in the metal removal efficiency.

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“…The modeling of uptake kinetics was performed using conventional equations: (a) pseudo-first order rate equation (PFORE), (b) pseudo-second order rate equation (PSORE) (Ho and McKay 1999;Spies and Wewers 2020;Wieszczycka et al 2020), and (c) the Crank equation (associated with the resistance to intraparticle diffusion, assuming the homogeneous diffusion of the sorbate at the surface of the sorbent, with constant surface diffusivity condition (Crank 1975)). The parameters were determined by non-linear regression analysis using the facilities of Mathematica ® software.…”

Section: Sorption and Desorption Processesmentioning

confidence: 99%

Cadmium and iron removal from phosphoric acid using commercial resins for purification purpose

Taha

Masoud

Khawassek

et al. 2020

Environ Sci Pollut Res

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Three commercial resins bearing sulfonic, amino phosphonic, or phosphonic/sulfonic reactive groups have been tested for the removal of iron and cadmium from phosphoric acid solutions. The sorption properties are compared for different experimental conditions such as sorbent dosage (0.5-2.5 g L −1), phosphoric acid concentration (from bi-component solutions, 0.25-2 M), and metal concentrations (i.e., in the range 0.27-2.7mmolCdL −1 and0.54mmolFe L −1) with a special attention paid to the impact of the type of reactive groups held on the resins. The sulfonic-based resin (MTC1600H) is more selective for Cd (against Fe), especially at high phosphoric acid concentration and low sorbent dosage, while MTS9500 (aminophosphonic resin) is more selective for Fe removal (regardless of acid concentration and sorbent dosage). Equilibrium is reached within 2-4 h. The resins can be ranked in terms of cumulative sorption capacities according the series: MTC1600H > MTS9570 > MTS 9500. Sulfuric acid (0.5-1 M) can be efficiently used for the desorption of both iron and cadmium for MTC1600H, while for MTS9570 (phosphonic/sulfonic resin) sulfuric acid correctly desorbs Cd (above 96% at 1 M concentration), contrary to Fe (less than 30%). The aminophosphonic resin shows much poorer efficiency in terms of desorption. The sulfonic resin (i.e., MTC1600H) shows much higher sorption capacity, better selectivity, comparable uptake kinetics (about 2 h equilibrium time), and better metal desorption ability (higher than 98% with 1 M acid concentration, regardless of the type of acid). This conclusion is confirmed by the comparison of removal properties in the treatment of different types of industrial phosphoric acid solutions (crude, and pre-treated H 3 PO 4 solutions). The three resins are inefficient for the treatment of crude phosphoric acid, and activated charcoal pre-treatment (MTC1600H reduced cadmium content by 77%). However, MTC1600H allows removing over 93% of Fe and Cd for H 3 PO 4 pre-treated by TBP solvent extraction, while the others show much lower efficiencies (< 53%).

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Novel ionic liquid-modified polymers for highly effective adsorption of heavy metals ions

Cited by 52 publications

References 37 publications

Recycling of zinc ions in disc-donut column considering forward mixing mass transfer, and effects of pulsed and non-pulsed condition

Recycling of zinc ions in disc-donut column considering forward mixing mass transfer, and effects of pulsed and non-pulsed condition

Novel Polymer Sorbents with Imprinted Task-Specific Ionic Liquids for Metal Removal

Cadmium and iron removal from phosphoric acid using commercial resins for purification purpose

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