Pervaporation of water–alcohol mixtures and acetic acid–water mixtures

Baelen, Dimitri Van; Bruggen, Bart Van der; Dungen, K. Van den; Degrève, Jan; Vandecasteele, Carlo

doi:10.1016/j.ces.2004.10.030

Cited by 135 publications

(56 citation statements)

References 28 publications

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“…VOCs-volatile organic compounds) from water, • separation of organic mixtures [6][7][8][9][10]. Pervaporation is most efficiently employed if liquid mixtures form an azeotrope; in case of separating close boiling components or if mixtures contain thermally unstable components [11].…”

Section: Introductionmentioning

confidence: 99%

Comparison of pervaporation models with simulation of hybrid separation processes

Valentínyi

Mizsey

2014

Per. Pol. Chem. Eng.

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Section: Introductionmentioning

confidence: 99%

Comparison of pervaporation models with simulation of hybrid separation processes

Valentínyi

Mizsey

2014

Per. Pol. Chem. Eng.

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“…Van Baelen et al [4] used the same membrane to study the pervaporation performance of different alcohol-water mixtures (methanol, ethanol, and isopropanol) at 60°C. In the same year, Qiao et al [5] compared the membrane performance of two commercial polyvinyl alcohol membranes, PERVAP ® 2201 and PERVAP ® 2510, to dehydrate isopropanol.…”

Section: Introductionmentioning

confidence: 99%

“…In the present work, the effect of feed temperature and water feed composition has been studied systematically. The water concentration in the feed was varied from 2-75 wt % and the feed temperature from 311.15-348.15 K. The results obtained have been compared with the flux, permeances, and separation factors obtained in previous studies with the same kind of membrane [4,5]. Additionally, the swelling behavior of the membrane PERVAP ® 2201 was studied for different water/isopropanol mixtures at room temperature.…”

Section: Introductionmentioning

confidence: 99%

Study of the Dehydration of Isopropanol by a Pervaporation‐Based Hybrid Process

Sanz

Gmehling

2006

Chem Eng & Technol

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The permeation characteristics of the commercial polymeric membrane PERVAP ® 2201 were studied to carry out the dehydration of binary water/isopropanol mixtures. The influence of the composition (2-75 wt % H 2 O) and temperature of the feed (311.15-348.15 K) on the membrane performance was studied. The selected membrane showed a high selectivity towards water in the entire concentration range. It was found that the permeation rate increased with the water content and the operating temperature. The influence of the temperature on the flux can be described by an Arrhenius-type expression. The commercial software Aspen Plus was used to simulate the dehydration of isopropanol by means of a hybrid process combining distillation and pervaporation.

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“…Table 4 summarizes the separation performance of commercial cross-linked polyvinyl alcohol (PVA) flat sheet membranes (Sulzer) and cross-linked polymeric hollow fibers by recent studies for pervaporation dehydration of alcohols. Although the overall performance of the first-generation cross-linked Torlon/P84 membranes are not as good as commercially available cross-linked flat PVA membranes [33,34], it shows comparable separation performance with those hollow fiber membranes made from other materials [2,35,36] when comparing them in terms of pervaporation separation index (i.e., PSI = flux × separation factor) [37]. To expand the Torlon hollow fiber membrane in pervaporation applications, one must further reduce its swelling, enhance its separation factor and reduce the dense-selective layer thickness.…”

Section: Pervaporation Performance Of Torlon and Torlon/p84 Blended Mmentioning

confidence: 93%

Exploring Torlon/P84 co-polyamide-imide blended hollow fibers and their chemical cross-linking modifications for pervaporation dehydration of isopropanol

Teoh

Chung

et al. 2008

Separation and Purification Technology

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A research study has been conducted to fabricate and chemically modify Torlon ® 4000T and Torlon/P84 co-polyamide-imide blended hollow fibers as new materials for the dehydration of isopropanol (IPA). It has been found that Torlon/P84 blends are miscible, as confirmed through the single glass transition temperatures (T g s) detected by differential scanning calorimetry (DSC). Both pure and blended hollow fibers fabricated from the dry-jet wet-spinning process do not show sufficient resistance to suppress water and IPA induced swelling, whereas cross-linked pure Torlon hollow fibers show only marginal improvement. However, the Torlon/P84 blended fibers display enhanced separation performance after chemical cross-linking modification with the aid of p-xylenediamine. It is believed that the p-xylenediamine induced cross-linking reactions result in greater chain packing and the reduction of free volume. The highest separation factor obtained was 185 ± 8 for the 85/15 wt.% IPA/H 2 O feed solution and the total permeation flux obtained was 1000 ± 45 g/m 2 h.

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Pervaporation of water–alcohol mixtures and acetic acid–water mixtures

Cited by 135 publications

References 28 publications

Comparison of pervaporation models with simulation of hybrid separation processes

Comparison of pervaporation models with simulation of hybrid separation processes

Study of the Dehydration of Isopropanol by a Pervaporation‐Based Hybrid Process

Exploring Torlon/P84 co-polyamide-imide blended hollow fibers and their chemical cross-linking modifications for pervaporation dehydration of isopropanol

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