Pervaporation separation of ethylacetate–water mixtures through a crosslinked poly(vinylalcohol) membrane

Salt, Yavuz; Hasanoğlu, Ayça; Salt, Inci; Keleşer, Sevinç; Özkan, Semra; Dinçer, Salih

doi:10.1016/j.vacuum.2005.03.010

Cited by 34 publications

(18 citation statements)

References 10 publications

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“…This is a result of the cross-plasticisation indicating that the sorption of one component is affected by the sorption of the other component, and the coupling effect occurring between the transport of different migrant species. [3] CONCLUSIONS The filled PVA membranes containing different amounts of clinoptilolite zeolite by weight percent were prepared. The water sorption of the clinoptilolite filled membrane increases with the increasing of temperature, while no appreciable change is observed for EtOH and EtAc sorptions.…”

Section: Pervaporation Resultsmentioning

confidence: 99%

“…[3,30,31] In order to maintain a continuousflow system, the experimental apparatus consisted of a feed tank, a heating water bath, feed liquid pump (peristaltic), vacuum pump, stainless steel membrane cell and dewar flasks. The pressure at the downstream side was kept at 1 kPa.…”

Section: Pervaporation Experimentsmentioning

confidence: 99%

“…Pervaporation apparatus. [3,30,31] VOLUME 92, MARCH 2014 THE CANADIAN JOURNAL OF CHEMICAL ENGINEERINGSamples were withdrawn periodically for GC analysis. The analysis of the collected samples was performed on a Shimadzu model GC 9A gas chromatograph fitted with a Porapak T 80/100 column with dimensions of 6 0 Â 1/8 00 and equipped with a thermal conductivity detector.…”

Section: Pervaporation Experimentsmentioning

confidence: 99%

“…The permeate is continuously removed from the other side of the membrane in vapour form by a vacuum pump. [3][4][5] Compared to the conventional separation methods, PV provides several advantages: easy process design, high selectivity, low energy consumption, moderate cost to performance ratio. [6] Moreover, hybrid systems such as PV followed by conventional separation processes such as distillation decreases the energy consumption.…”

Section: Introductionmentioning

confidence: 99%

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Sorption and pervaporation results of clinoptilolite filled poly(vinylalcohol) membrane prepared for dehydration of aqueous organic mixtures

2013

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Clinoptilolite filled poly(vinylalcohol) membranes containing different weight percentages of zeolite were prepared by solution casting method, and the prepared membranes were characterised by scanning electron microscopy, thermogravimetric analysis and differential scanning calorimeter. Sorption and permeation experiments were carried out at 30, 40 and 50°C in pure water, ethanol (EtOH) and ethylacetate. In addition, the pervaporation separation of EtOH-water mixtures was conducted for 20-80 wt% water containing EtOH-water binary mixtures at 30, 40 and 50°C. It is observed that permeation rates increased and selectivity decreased with the increasing of temperature and the water content in the feed.

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Section: Pervaporation Resultsmentioning

confidence: 99%

Section: Pervaporation Experimentsmentioning

confidence: 99%

Section: Pervaporation Experimentsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Sorption and pervaporation results of clinoptilolite filled poly(vinylalcohol) membrane prepared for dehydration of aqueous organic mixtures

2013

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“…This removal of the byproduct water can be done with a membrane by a pervaporative separation technique. 1 Several advantages are provided with such a technique: easy process design, high selectivity, and low energy consumption. Pervaporation offers the possibility of separating azeotropes or liquid mixtures containing components with close boiling points that are difficult to separate by distillation.…”

Section: ' Introductionmentioning

confidence: 99%

Multilayered Poly(vinylidene fluoride) Composite Membranes with Improved Interfacial Compatibility: Correlating Pervaporation Performance with Free Volume Properties

Chen

Guzman

et al. 2011

Langmuir

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A spin-coating process integrated with an ozone-induced graft polymerization technique was applied in this study. The purpose was to improve the poor interfacial compatibility between a selective layer of poly(2-hydroxyethyl methacrylate) (PHEMA) and the surface of a poly(vinylidene fluoride) (PVDF) substrate. The composite membranes thus fabricated were tested for their pervaporation performance in dehydrating an ethyl acetate/water mixture. Furthermore, the composite membranes were characterized by field emission scanning electron microscopy (FE-SEM) for morphological change observation and by Fourier transform infrared spectroscopy equipped with attenuated total reflectance (ATR-FTIR) for surface chemical composition analysis. Effects of grafting density and spin-coating speed on pervaporation performance were examined. The composite membrane pervaporation performance was elucidated by means of free volume and depth profile data obtained with the use of a variable monoenergy slow positron beam (VMSPB). Results indicated that a smaller free volume was correlated with a higher pervaporation performance of a composite membrane consisting of a selective layer of spin-coated PHEMA on a PHEMA-grafted PVDF substrate (S-PHEMA/PHEMA-g-PVDF). The composite membrane depth profile illustrated that an S-PHEMA layer spin-coated at a higher revolutions per minute (rpm) was thinner and denser than that at a lower rpm.

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Perfluorosulfonic acid—Tetraethoxysilane/polyacrylonitrile (PFSA‐TEOS/PAN) hollow fiber composite membranes prepared for pervaporation dehydration of ethyl acetate–water solutions

Yuan

Shi

et al. 2008

J of Applied Polymer Sci

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Preparation of organic-inorganic composite membranes and their pervaporation (PV) permeation and separation characteristics for the aqueous solution of ethyl acetate were described. Polyacrylonitrile (PAN) hollow fiber ultrafiltration membrane as support membrane, the mixtures of perfluorosulfonic acid (PFSA) and tetraethoxysilane (TEOS) by the sol-gel reaction as the coating solution, the PFSA-TEOS/PAN hollow fiber composite membranes by the different annealing conditions were prepared. The swelling of PFSA in ethyl acetate aqueous solutions was inhibited with addition of TEOS. The PFSA-TEOS/PAN composite membranes containing up to 30 wt % TEOS in coating solution exhibited high selectivity towards water, then the selectivity decreased and permeation flux increased with increasing the TEOS concentration more than 30 wt %. When the PFSA-TEOS/PAN composite membranes were annealed, the separation factor increased with increasing annealing temperature and time. Higher annealing temperature and longer annealing time promoted the crosslinking reaction between PFSA and TEOS in PFSA-TEOS/PAN composite membranes, leading to the enhanced selectivity towards water. For the PFSA/PAN and PFSA-TEOS/PAN composite membrane with 5 and 30 wt % TEOS annealed at 908C for 12 h, their PV performance of aqueous solution 98 wt % ethyl acetate were as follows: the separation factors were 30.8, 254 and 496, while their permeation flux were 1430, 513 and 205 g/m 2 h at 408C, respectively. In addition, the PV performance of PFSA-TEOS/PAN composite membranes was investigated at different feed solution temperature and concentration.

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Pervaporation separation of ethylacetate–water mixtures through a crosslinked poly(vinylalcohol) membrane

Cited by 34 publications

References 10 publications

Sorption and pervaporation results of clinoptilolite filled poly(vinylalcohol) membrane prepared for dehydration of aqueous organic mixtures

Sorption and pervaporation results of clinoptilolite filled poly(vinylalcohol) membrane prepared for dehydration of aqueous organic mixtures

Multilayered Poly(vinylidene fluoride) Composite Membranes with Improved Interfacial Compatibility: Correlating Pervaporation Performance with Free Volume Properties

Perfluorosulfonic acid—Tetraethoxysilane/polyacrylonitrile (PFSA‐TEOS/PAN) hollow fiber composite membranes prepared for pervaporation dehydration of ethyl acetate–water solutions

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