Effect of [EMIM][BF4] ionic liquid on the properties of ultrafiltration membranes

Lessan, Fatemeh; Foudazi, Reza

doi:10.1016/j.polymer.2020.122977

Cited by 32 publications

(19 citation statements)

References 38 publications

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“…To further study the fouling properties of the prepared samples, fouling resistance parameters of irreversible permeability decay rate (DR ir ), reversible permeability decay rate (DR r ), and total permeability decay rate (DR t ) of the C‐KIT‐6 incorporated PES membranes were calculated and listed in Table 4. Reversible fouling is related to the membrane surface and pore blockage resulted from the stable adsorption of foulants on the membrane surface and within its pores, whereas reversible fouling is ascribed to the less attachment of foulants which can be easily rinsed 54,55 . As can be seen, along with the loading of 0.1 wt% C‐KIT‐6 the irreversible and total permeability decay rate of PES membrane decreased from 63.9% and 74.9% to 26.9% and 66.9%.…”

Section: Resultsmentioning

confidence: 90%

“…Reversible fouling is related to the membrane surface and pore blockage resulted from the stable adsorption of foulants on the membrane surface and within its pores, whereas reversible fouling is ascribed to the less attachment of foulants which can be easily rinsed. 54,55 As can be seen, along with the loading of 0.1 wt% C-KIT-6 the irreversible and total permeability decay rate of PES membrane decreased from 63.9% and 74.9% to 26.9% and 66.9%. Among the C-KIT-6 incorporated PES membranes, M 2 -C-KIT-6 indicated the superior antifouling behavior with the DR ir, DR r , and DR t values of 4.8%, 49%, and 53.8% respectively proved its higher reversible adsorption of foulant molecules.…”

Section: Fouling Behavior Of the C-kit-6 Incorporated Pes Nf Membranesmentioning

confidence: 86%

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Novel antifouling nanofiltration PES membranes incorporating with C‐KIT‐6 for heavy metal ions removal

Moradi

Rahimi

Zinadini

2021

Polymers for Advanced Techs

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The removal of Pb 2+ , Ni 2+ , and Zn 2+ from contaminated water was investigated using the curcumin functionalized KIT-6 (C-KIT-6) incorporated polyethersulfone (PES) nanofiltration (NF) membranes. The prepared C-KIT-6 was characterized by scanning electron microscope (SEM), X-ray powder diffraction (XRD), zeta potential, Energy dispersive X-Ray (EDX), and Fourier-transform infrared spectroscopy (FTIR).EDX mapping, SEM, and FTIR were used to show that C-KIT-6 mixed in the membrane. Zeta potential, mechanical properties, pore radius, pore radius distribution, and overall porosity were also studied to further characterize the prepared membranes. The hydrophilicity of the membranes was determined by the water contact angle and pure water flux study, and it was increased with respect to increasing C-KIT-6 loading. Atomic force microscopy (AFM) images of the C-KIT-6 incorporated membranes represented favorable alterations in surface roughness resulting in the amelioration of antifouling behavior. The maximum flux recovery ratio (FRR) and minimum irreversible permeability decay rate (DR ir ) were attained to be 95.2 and 4.8%, respectively, for the membrane with 0.3 wt% C-KIT-6 (M 2 -C-KIT-6). The rejection of all testing heavy metal ions was maximum (Pb 2+ = 91.4%, Ni 2+ = 93.1% and Zn 2+ = 98.0%) for M 2 -C-KIT-6. Moreover, M 2 -C-KIT-6 showed good long-term reusability performance. The obtained results prove the antifouling C-KIT-6 incorporated PES NF membranes are potential candidates for heavy metal ion removal.

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Section: Resultsmentioning

confidence: 90%

Section: Fouling Behavior Of the C-kit-6 Incorporated Pes Nf Membranesmentioning

confidence: 86%

Novel antifouling nanofiltration PES membranes incorporating with C‐KIT‐6 for heavy metal ions removal

Moradi

Rahimi

Zinadini

2021

Polymers for Advanced Techs

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“…where η o ~ e  S/R represents a pre-exponential constant, S is the flow activatio R is the universal gas constant, and T is the absolute temperature. The origin of the high complexity of these systems lies in the combination o erties generated by the long alkyl chain molecules with those derived from interactions that can induce localized aggregation [56] (Figure 5). As is know namic stability.…”

Section: Tuning Of Microstructure In Polysulfone Blends Based On Ioni...mentioning

confidence: 99%

“…As the IL c creases (see Figure 6c,d,b',c'), the system directly enters the metastable nodal decomposition occurs, which induces the formation of a closed-cel cellular or a nodular morphology. The origin of the high complexity of these systems lies in the combination of the properties generated by the long alkyl chain molecules with those derived from the charge interactions that can induce localized aggregation [56] (Figure 5). As is known from the literature [57,58], the location of a system's heterogeneous region is dependent on the combination of its components and their characteristics, which reflects a limitation of compatibility and the well-established compatibility domain.…”

Section: Tuning Of Microstructure In Polysulfone Blends Based On Ioni...mentioning

confidence: 99%

Green Blends Based on Ionic Liquids with Improved Performance for Membrane Technology: Perspectives for Environmental Applications

Filimon¹,

Dobos²,

Dumbrava³

et al. 2022

IJMS

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Present research was directed towards the development of new high-performance and cost-effective polysulfone membranes (PSFQ) by introducing ionic liquids (ILs—Cyphos 101 IL and Aliquat 336) into their matrix. Variation of ILs was performed with the aim to find the one that brings new properties and improves the functionality and selectivity of PSFQ membranes in ultrafiltration processes. Based on the obtained results of the rheological study, we established the compatibility of compounds and optimal content of the used ILs, namely 3 wt% and 15 wt% Cyphos 101 IL and compositions varying between 3 and 15 wt % Aliquat 336. Results indicated that the ILs acted as plasticizers when they were added to the system, a helpful aspect in processing membranes used in water decontamination. The efficiency and performance of the membranes were evaluated by their use in the treatment of diclofenac (DCF)-containing waters. Membranes obtained from PSFQ/Aliquat 336 solution containing 15 wt% IL exhibited a 97% removal degree of DCF in the treatment process of 50 mL solution containing 3 mg/L DCF. The separation efficiency was kept constant for four filtration/cleaning cycles. The results indicated an improvement in membrane performance as the amount of IL in their structure increased, which confirms the potential for application in water treatment processes.

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“…The use of such “green” solvents would minimize waste and losses in chemical processes 36 . It has been shown in 37 that the use of 1-ethyl-3-methylimidazolium tetrafluoroborate as an additive (up to 17% IL) in the polyethersulfone solution in DMF for the formation of UF membranes leads to a significant increase in the flux for an aqueous solution of bovine serum albumin and in the flux recovery ratio.…”

Section: Introductionmentioning

confidence: 99%

Effect of ionic liquid on formation of copolyimide ultrafiltration membranes with improved rejection of La3+

Pulyalina

Grekov

Tataurova

et al. 2022

Sci Rep

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Ultrafiltration (UF) as a widely used industrial separation method with optimal selection of membrane materials can be applied to extract rare earth metals from dilute solutions formed during the processing of electronic waste by hydrometallurgical methods. In the present work, promising UF copolyimide membranes were prepared using [hmim][TCB] ionic liquid (IL) co-solvent which can be considered as an environmentally friendly alternative to conventional solvents. The membranes were characterized by ATR-FTIR, TGA, SEM and quantum chemical calculations. A significant difference in morphology of these membranes was revealed by SEM of membrane cross-sections; the P84 membrane has finger-like structure of porous substrate in contrast to spongy structure of substrate for the P84/IL membrane due to a higher dynamic viscosity of the casting solution. The transport parameters were determined in ultrafiltration tests with pure water and an aqueous solution of bovine serum albumin. The addition of ionic liquid to the P84 casting solution increases the performance of the membrane. The rejection capacity was evaluated with respect to La3+ in the form of a lanthanum alizarin complex (LAC) in aqueous acetone solution. The P84 membrane prepared using IL showed a high rejection (98.5%) with respect to LAC, as well as a significant productivity.

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Effect of [EMIM][BF4] ionic liquid on the properties of ultrafiltration membranes

Cited by 32 publications

References 38 publications

Novel antifouling nanofiltration PES membranes incorporating with C‐KIT‐6 for heavy metal ions removal

Novel antifouling nanofiltration PES membranes incorporating with C‐KIT‐6 for heavy metal ions removal

Green Blends Based on Ionic Liquids with Improved Performance for Membrane Technology: Perspectives for Environmental Applications

Effect of ionic liquid on formation of copolyimide ultrafiltration membranes with improved rejection of La3+

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