Optimization of lanthanum transport through supported liquid membranes based on ionic liquid

Özevci, Gülçin; Sert, Şenol; Eral, Meral

doi:10.1016/j.cherd.2018.10.004

Cited by 23 publications

(4 citation statements)

References 50 publications

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“…The SLM was placed between the flanges of the chambers (Figure ). Saha , and Özevci used the SLM setup for their study, which was much similar to the one used in this study.…”

Section: Methodsmentioning

confidence: 99%

Development of a Purification Method for ⁸⁹Sr Produced in a Fast Reactor Using a Supported Liquid Membrane

Saha

Vithya

Kumar

2022

Ind. Eng. Chem. Res.

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A carrier-free 89Sr source has been produced in FBTR, IGCAR, Kalpakkam, via 89Y (n, p)89Sr for application in nuclear medicine, especially for bone pain palliation. Purification of 89Sr from an FBTR irradiated Y target by the supported liquid membrane (SLM) technique offers several advantages due to its bulk-scale production. Crown ether-based SLM separation with a modifier was standardized for the purification of 89Sr from the bulk irradiated Y matrix and other impurities of activated products (60Co, 65Zn). Various process parameters such as concentration of the extractant, modifier, soaking time of the membrane with the extractant, acidity in the feed chamber, and stirring speed were studied for the optimum transport condition. Long-duration transport experiments were then carried out with the optimum parameters with a tracer mixture and transported from the FBTR irradiated yttria dissolver solution for the purification of 89Sr. The proposed transport mechanism was validated with viscosity and water content measurement of the membrane phase. The present SLM system containing 9 M HNO3//DtBuCH18C6/D2EHPA/heptane/PTFE//0.3 M HNO3 and pH 5 HNO3//D2EHPA/heptane/PTFE//9 M HNO3 established, for the first time, satisfactory purification of 89Sr from its irradiated yttria matrix in a fast reactor, i.e., FBTR, and was amenable to continuous operation with long-term stability, demonstrated for about not less than a period of a week. By incorporating a pair of membranes that are Sr and Y selective, a Sr source with a radionuclidic purity of ≥99.6% was obtained from actual dissolver solutions of the FBTR irradiated yttrium matrix.

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“…The SLM was placed between the flanges of the chambers (Figure ). Saha , and Özevci used the SLM setup for their study, which was much similar to the one used in this study.…”

Section: Methodsmentioning

confidence: 99%

Development of a Purification Method for ⁸⁹Sr Produced in a Fast Reactor Using a Supported Liquid Membrane

Saha

Vithya

Kumar

2022

Ind. Eng. Chem. Res.

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“…Selective ligands can be incorporated into solid-phase separation materials such as resins and membranes through physisorption or covalent bond formation. Within membrane-based separations, there are several membrane designs used for lanthanide separations such as liquid supported membranes, − rejection-based membranes − or adsorption-based microfiltration membranes. Membrane adsorbers can have the same specificity as resin-based adsorption processes; however, they benefit from the convection-driven transport characteristic of microfiltration membranes.…”

Section: Introductionmentioning

confidence: 99%

Incorporating Comonomers into Polymeric Phosphate Ligands Can Tune the Affinity and Capacity for Rare Earth Element, La

Suresh

et al. 2022

ACS Appl. Polym. Mater.

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Phosphate ligands are widely used in ion-exchange and chelation separation materials (resins and membranes) to sequester heavy metals like lanthanides and actinides. In this work, the affinity, capacity, and kinetics of membranes functionalized with phosphate-containing copolymers for La3+ were characterized. In particular, the impact of the nonion complexing comonomers, 2-hydroxyethyl methacrylate (HEMA) and butyl methacrylate (BuMa), on the adsorption performance of ethylene glycol methacrylate phosphate EGMP was investigated. Membranes were coated with poly(EGMP), poly(EGMP-co-HEMA), or poly(EGMP-co-BuMa) using thermally initiated free-radical polymerization and characterized using attenuated total reflectance Fourier transform infrared spectroscopy, proton nuclear magnetic resonance, and contact angle goniometry. Equilibrium adsorption data were modeled with the Langmuir isotherm and revealed several trends. At pH 4, the Langmuir constant (K L) which is an indicator of La3+ affinity is markedly higher when a non-H bonding “spacer” is present. Here, K L follows the trend: poly(EGMP-co-BuMa) = 97 ± 18 mM–1 > poly(EGMP-co-HEMA) = 6.0 ± 1.1 mM–1 > poly(EGMP) = 2.3 ± 0.6 mM–1. Interestingly, the maximum capacity Q max (mmol La (mmol P)−1) follows a reverse trend: poly(EGMP-co-HEMA) > poly(EGMP) > poly(EGMP-co-BuMA). Kinetic studies at pH 4 reveal that faster adsorption is observed for polymers with less intramolecular H-bonding. The impact of the spacing monomer on the affinity (K L) was pH-dependent where at pH 1, both poly(EGMP-co-BuMA) and poly(EGMP-co-HEMA) show the same K L. Furthermore, the polymer composition did not impact the adsorption kinetics at pH 1. Thus, the ability of the comonomer to serve as an H-bond donor did play a role at this pH. This work reveals the role of comonomers in polymeric adsorbents and suggests the ability to use them to tailor adsorbent performance.

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“…Because of porous structures that provide a surface area for organic phases, ionic liquids, enzymes, specific complexing agents [3], and protein immobilization [4][5][6][7]. Polyvinylidene fluoride film (PVDF) membrane is a synthetic membrane used in various applications such as to separate contaminating viral particles from biologically important proteins [8], metal extraction [9], drug delivery [10], pharmaceuticals removal [11], amino acid immobilization [12] and protein immobilization [4][5][6][7]. Baican [4,5,7].…”

Section: Introductionmentioning

confidence: 99%

Molecular Docking Analysis of PVDF Membrane Against Human Erα, EGFR, CDK2, mTOR, and HSP90 Proteins

Ata¹,

Özevci²

2022

acperpro

Self Cite

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Porous membranes are used in biological and chemical systems and industrial applications. Polyvinylidene fluoride film (PVDF) membrane is a commercial membrane used in drug delivery, protein immobilization, food industry, tissue engineering, and medical devices. Because of providing a large surface area in this study PVDF membrane is used. Molecular docking is a molecular modeling simulation software especially used to determine protein-ligand interactions. The aim of the study is to determine the interaction of hydrophobic PVDF membranes on Erα, EGFR, CDK2, mTOR, and HSP90 proteins by docking method and to examine its potential as a possible drug carrier. The three-dimensional structure of the receptors has been acquired from the RCSB protein data bank and is docked with 3D PubChem of PVDF using AutoDock 1.5.6 software. The results have shown that the PVDF membrane had the best docking score for mTOR between the investigated proteins.

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Optimization of lanthanum transport through supported liquid membranes based on ionic liquid

Cited by 23 publications

References 50 publications

Development of a Purification Method for ⁸⁹Sr Produced in a Fast Reactor Using a Supported Liquid Membrane

Development of a Purification Method for ⁸⁹Sr Produced in a Fast Reactor Using a Supported Liquid Membrane

Incorporating Comonomers into Polymeric Phosphate Ligands Can Tune the Affinity and Capacity for Rare Earth Element, La

Molecular Docking Analysis of PVDF Membrane Against Human Erα, EGFR, CDK2, mTOR, and HSP90 Proteins

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Optimization of lanthanum transport through supported liquid membranes based on ionic liquid

Cited by 23 publications

References 50 publications

Development of a Purification Method for 89Sr Produced in a Fast Reactor Using a Supported Liquid Membrane

Development of a Purification Method for 89Sr Produced in a Fast Reactor Using a Supported Liquid Membrane

Incorporating Comonomers into Polymeric Phosphate Ligands Can Tune the Affinity and Capacity for Rare Earth Element, La

Molecular Docking Analysis of PVDF Membrane Against Human Erα, EGFR, CDK2, mTOR, and HSP90 Proteins

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Product

Resources

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Development of a Purification Method for ⁸⁹Sr Produced in a Fast Reactor Using a Supported Liquid Membrane

Development of a Purification Method for ⁸⁹Sr Produced in a Fast Reactor Using a Supported Liquid Membrane