Enhancing the pervaporation performance of PEBA/PVDF membrane by incorporating MAF-6 for the separation of phenol from its aqueous solution

Khan, Rafaqat Ali; Haq, Ihtisham Ul; Mao, Heng; Zhang, Ao‐Shuai; Xu, Li‐Hao; Zhen, Hong-Gang; Zhao, Zhi‐Ping

doi:10.1016/j.seppur.2020.117804

Cited by 31 publications

(10 citation statements)

References 57 publications

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“…At lower membrane thickness (48 μm), the active layer of the PVA‐g‐PNHMA membrane was swollen and plasticized, permitting both IPA and water molecules to diffuse through the membrane layer unrestricted. Furthermore, in the pervaporation process, a thin membrane possesses the dry region at permeate side closer to the feed side with a shorter path for the permeating molecules with less separation factor toward the desired compounds 47 . According to Khan et al (2021), the thickness of the “dry region” considerably affects the permselectivity that is directly proportional to the total thickness of the membrane 47 .…”

Section: Resultsmentioning

confidence: 99%

“…Furthermore, in the pervaporation process, a thin membrane possesses the dry region at permeate side closer to the feed side with a shorter path for the permeating molecules with less separation factor toward the desired compounds 47 . According to Khan et al (2021), the thickness of the “dry region” considerably affects the permselectivity that is directly proportional to the total thickness of the membrane 47 . On the other hand, at higher membrane thickness (80 μm), the PVA‐g‐PNHMA membrane can be partially swelled.…”

Section: Resultsmentioning

confidence: 99%

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Pervaporation performance of poly(vinyl alcohol)‐graft‐poly(N‐hydroxymethyl acrylamide) membranes for dehydration of isopropyl alcohol‐water mixture

Baysak

Işıklan

2021

J of Applied Polymer Sci

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In the present work, poly(N‐hydroxymethyl acrylamide) grafted poly(vinyl alcohol) (PVA‐g‐PNHMA) membranes were developed for the dehydration of isopropyl alcohol (IPA) by the use of pervaporation method. The PVA‐g‐PNHMA membranes have been synthesized and their chemical composition and morphology have been characterized by Fourier transform infrared spectroscopy, 13C‐nuclear magnetic resonance spectroscopy, X‐ray diffractometry, differential scanning calorimetry, thermogravimetric analysis, and field emission scanning electron microscopy. The impacts of numerous factors such as temperature, feed concentration as well as membrane thickness on their pervaporation performance were investigated and the optimal conditions were found. With the increase in the grafting percentage of the PVA‐g‐PNHMA membrane, both flux and separation factor also increase. The PVA‐g‐PNHMA membrane with a grafting percentage of 34% revealed the best separation factor of 362 with a flux of 0.0085 kg/m2.h for 12.6% mass of water in the feed solution. It has also been found that swelling behaviors of the membranes are consistent with all pervaporation results. Besides, permeation and diffusion activation energies were determined as 23.69 and 29.21 kJ/mol from the change of permeation flux with temperature. Based on the obtained outcomes, it is obvious that PVA‐g‐PNHMA membranes are quite efficient in the separation of IPA/water mixture via pervaporation.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Pervaporation performance of poly(vinyl alcohol)‐graft‐poly(N‐hydroxymethyl acrylamide) membranes for dehydration of isopropyl alcohol‐water mixture

Baysak

Işıklan

2021

J of Applied Polymer Sci

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“…This in turn could limit the access of Clc SUP species to acetaminophen more substantially than that to aniline, as speculated based on previous comparative studies on cOHmediated degradation of phenol and bisphenol A. 115,116 Nonetheless, the −r PHARMA,0,LA values of UiO-66-Cl showed a strong correlation with the IP values of the reactants, as evidenced by the regression factor (R 2 ) of 0.96 for the plot of −r PHARMA,0,LA versus IP (Fig. 7B).…”

Section: Kinetic Parameters and Practicalities Of The Mofsmentioning

confidence: 99%

A metal–organic framework modulated to site-isolate Cl˙ pendants via radical inter-conversion for degrading hard-to-ionize aqueous organic wastes

et al. 2023

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“…Khan et al prepared a mixed matrix membrane by incorporating MAF-6 as a filler into the PEBA polymer for pervaporation of separation of phenol/water. The optimum separation coefficient of MAF-6-7@MMM was 25.9, and the phenol flux was 89.2 g/m 2 at 80 °C and 1000 ppm of phenol solution . Further research on the performance of membrane materials is the key to the development of membrane separation technology.…”

Section: Introductionmentioning

confidence: 99%

“…The optimum separation coefficient of MAF-6-7@MMM was 25.9, and the phenol flux was 89.2 g/m 2 at 80 °C and 1000 ppm of phenol solution. 27 Further research on the performance of membrane materials is the key to the development of membrane separation technology. At present, most of the research is devoted to the modification of membrane materials and the development of pervaporation membranes with higher separation performance.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of PEBA/HZIF-8 Pervaporation Membranes for High Efficiency Phenol Recovery

et al. 2022

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Phenol and its chemical derivatives serve as essential chemical materials are indispensable for the synthesis of many kinds of polymers. However, they are highly toxic, carcinogenic, difficult to be degraded biologically, and often found in aqueous effluents. Recovery of hazardous phenol from wastewater remains a daunting challenge. Herein, we prepared a hybrid membrane containing polyether block amide (PEBA) matrix and HZIF-8 fillers. To improve the compatibility between ZIF-8 and PEBA, ZIF-8 was modified by using polystyrene (PS) as a template to prepare porous HZIF-8. ZIF-8, composed of zinc nodes linked by the imidazole ring skeleton, is a kind of inorganic material with high hydrothermal stability, ordered pores, and hydrophobic microporous surfaces, which has a wide range of applications in membrane separation. The separation performance of the PEBA/HZIF-8 based membranes for phenol/water is improved due to the presence of PS on the surface of HZIF-8 and the imidazole ring skeleton in ZIF-8, which enhance the π–π interaction between HZIF-8 and phenol molecules. The effects of HZIF-8 content, feed phenol concentration, and feed temperature on the pervaporation performance of PEBA/HZIF-8 membranes were further investigated. The results showed that the pervaporation performance of the PEBA/HZIF-8-10 membrane was promising with a separation factor of 80.89 and permeate flux of 247.70 g/m 2 ·h under the feed phenol concentration of 0.2 wt % at 80 °C. In addition, the PEBA/HZIF-8-10 membrane presented excellent stability, which has great prospect for practical application in phenol recovery from waste water.

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Enhancing the pervaporation performance of PEBA/PVDF membrane by incorporating MAF-6 for the separation of phenol from its aqueous solution

Cited by 31 publications

References 57 publications

Pervaporation performance of poly(vinyl alcohol)‐graft‐poly(N‐hydroxymethyl acrylamide) membranes for dehydration of isopropyl alcohol‐water mixture

Pervaporation performance of poly(vinyl alcohol)‐graft‐poly(N‐hydroxymethyl acrylamide) membranes for dehydration of isopropyl alcohol‐water mixture

A metal–organic framework modulated to site-isolate Cl˙ pendants via radical inter-conversion for degrading hard-to-ionize aqueous organic wastes

Fabrication of PEBA/HZIF-8 Pervaporation Membranes for High Efficiency Phenol Recovery

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