Reduced graphene oxide based a novel polymer inclusion membrane: Transport studies of Cr(VI)

Kaya, Ahmet; Onaç, Canan; Alpoğuz, H. Korkmaz; Agarwal, Shilpi; Gupta, Vinod Kumar; Atar, Necip; Yïlmaz, Aydan

doi:10.1016/j.molliq.2016.04.023

Cited by 50 publications

(48 citation statements)

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“…EME experiments were carried out under constant current by a regenerated membrane with nanomaterials for the first time in the literature. Reinforcement of the membrane support materials with nanomaterial additives has been a widely used method in recent years . Membrane characteristic is increased by using nanomaterials in membrane synthesis.…”

Section: Resultsmentioning

confidence: 99%

Investigation of Electrical Conductivity Properties and Electro Transport of a Novel Multi Walled Carbon Nanotube Electro Membrane under Constant Current

Onaç

2020

Electroanalysis

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This study used multi‐walled carbon nanotube in electro‐membrane extraction studies under direct constant current for the first time for the electro transport of cypermethrin (CYP) from aqueous to acceptor phase. A novel and developed membrane exhibits visible and remarkable recovery values (82.76 %) for the removal of CYP under 0.3 A constant current at 60 V in 30 minutes. It is demonstrated that regenerating electro membrane by multi‐walled carbon nanotubes (MWCNTs) increased the electrical conductivity, thermal Ea values of a novel membrane (750 meV) and stability, and it resulted in better and higher kinetic results on the transport process. This study presents a potential solution for the limited use of electro‐membrane extraction at higher current values. Regenerating of the electro membrane by MWCNTs not only allows us to work even at high current values, it prevents the formation of electrolysis up to a certain current value in donor and acceptor phases. Thermogravimetric analysis of the novel membrane also confirms successful regeneration of the electro membrane by MWCNTs. Electro‐membrane extraction studies have gained a new perspective and innovation by the use of MWCNTs in electro‐membrane process.

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Section: Resultsmentioning

confidence: 99%

Investigation of Electrical Conductivity Properties and Electro Transport of a Novel Multi Walled Carbon Nanotube Electro Membrane under Constant Current

Onaç

2020

Electroanalysis

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“…The presence of Mg-Al-CO 3 layered double hydroxide incorporated in a PIM composed of PVC and Aliquat 336 was prepared to promote the extraction efficiency towards cyanide [ 27 ]. PIMs doped with reduced graphene oxide and modified graphene quantum dots were prepared and used for the recovery of Cr(VI) [ 28 , 29 , 30 ] using calix[ 4 ]arenes as extractants. The catalytic activity of membranes prepared with Ag and Pd nanoparticles has also been exploited [ 31 ].…”

Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of Nanoparticle-Doped Polymer Inclusion Membranes. Application to the Removal of Arsenate and Phosphate from Waters

et al. 2021

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Nanoparticle-doped polymer inclusion membranes (NP-PIMs) have been prepared and characterized as new materials for the removal of arsenate and phosphate from waters. PIMs are made of a polymer, cellulose triacetate (CTA), and an extractant, which interacts with the compound of interest. We have used the ionic liquid (IL) trioctylmethylammonium chloride (Aliquat 336) as the extractant and have investigated how the addition of nanoparticles can modify membrane properties. To this end, inorganic nanoparticles, such as ferrite (Fe3O4), SiO2 and TiO2, and multiwalled carbon nanotubes (MWCNTs), were blended with the polymer/extractant mixture. Scanning electron microscopy (SEM), infrared spectroscopy (FT-IR), and contact angle measurements have been used to characterize the material. Moreover, PIM stability was checked by measuring the mass loss during the experiments. Since Aliquat 336 acts as an anion exchanger, the NP-PIMs have been explored in two different applications: (i) as sorbent materials for the extraction of arsenate and phosphate anions; (ii) as an organic phase for the separation of arsenate and phosphate in a three-phase system. The presence of oleate-coated ferrite NP in the PIM formulation represents an improvement in the efficiency of NP-PIMs used as sorbents; nevertheless, a decrease in the transport efficiency for arsenate but not for phosphate was obtained. The ease with which the NP-PIMs are prepared suggests good potential for future applications in the treatment of polluted water. Future work will address three main aspects: firstly, the implementation of the Fe3O4-PIMs for the removal of As(V) in real water containing complex matrices; secondly, the study of phosphate recovery with other cell designs that allow large volumes of contaminated water to be treated; and thirdly, the investigation of the role of MWCNTs in PIM stability.

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“…Furthermore, although PIMs have many of the advantages as described above, its relatively lower initial flux values or permeability has always been a major challenge [44]. Therefore, attempts have been made by researchers to improve the properties of PIMs such as introducing crosslinking between components [45], applying novel carriers [46], employing nanoscale additives [47], and applying electric fields on both sides of the membrane [48]. Among them, the application of an electric field by combining the PIM and electrodialysis (ED) process seems to be a favorable and effective method [49].…”

Section: Introductionmentioning

confidence: 99%

Selective Separation of Acetic and Hexanoic Acids across Polymer Inclusion Membrane with Ionic Liquids as Carrier

Wang

Zhang

et al. 2019

IJMS

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This paper first reports on the selective separation of volatile fatty acids (VFAs) (acetic and hexanoic acids) using polymer inclusion membranes (PIMs) containing quaternary ammonium and phosphonium ionic liquids (ILs) as the carrier. The affecting parameters such as IL content, VFA concentration, and the initial pH of the feed solution as well as the type and concentration of the stripping solution were investigated. PIMs performed a much higher selective separation performance toward hexanoic acid. The optimal PIM composed of 60 wt% quaternary ammonium IL with the permeability coefficients for acetic and hexanoic acid of 0.72 and 4.38 µm s−1, respectively, was determined. The purity of hexanoic acid obtained in the stripping solution increased with an increase in the VFA concentration of the feed solution and decreasing HCl concentration of the stripping solution. The use of Na2CO3 as the stripping solution and the involvement of the electrodialysis process could dramatically enhance the transport efficiency of both VFAs, but the separation efficiency decreased sharply. Furthermore, a coordinating mechanism containing hydrogen bonding and ion exchange for VFA transport was demonstrated. The highest purity of hexanoic acid (89.3%) in the stripping solution demonstrated that this PIM technology has good prospects for the separation and recovery of VFAs from aqueous solutions.

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Reduced graphene oxide based a novel polymer inclusion membrane: Transport studies of Cr(VI)

Cited by 50 publications

References 50 publications

Investigation of Electrical Conductivity Properties and Electro Transport of a Novel Multi Walled Carbon Nanotube Electro Membrane under Constant Current

Investigation of Electrical Conductivity Properties and Electro Transport of a Novel Multi Walled Carbon Nanotube Electro Membrane under Constant Current

Preparation and Characterization of Nanoparticle-Doped Polymer Inclusion Membranes. Application to the Removal of Arsenate and Phosphate from Waters

Selective Separation of Acetic and Hexanoic Acids across Polymer Inclusion Membrane with Ionic Liquids as Carrier

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