Pervaporation

Bruggen, Bart Van der; Luis, Patricia

doi:10.1016/b978-0-12-384746-1.00004-5

Cited by 24 publications

(8 citation statements)

References 175 publications

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“…For an economical PV process for industrial applications, it is preferable to synthesize membranes with both high flux and separation factor; however, there is generally a trade‐off between membrane flux and separation factor. Pervaporation separation index (PSI), which is defined as the product of total permeate flux and separation factor, has been used to characterize the overall performance of a membrane under a specified condition 17,18 . PSI considers both flux and selectivity, and represents the economics of a membrane better than flux or separation factor alone.…”

Section: Introductionmentioning

confidence: 99%

Spray‐coatedPDMS/PVDFcomposite membrane for enhanced butanol recovery by pervaporation

Cheng

Yang

Bao

et al. 2020

J of Applied Polymer Sci

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In this study, spray-coating was used to prepare dihydroxypolydimethylsiloxane (PDMS) composite membranes with high flux and separation factor for biobutanol recovery from aqueous solution. A thin, smooth, and defect-free PDMS layer was prepared by spray-coating on polyvinylidene difluoride ultrafiltration membrane with little PDMS penetration. The effects of process parameters for membrane fabrication and pervaporation on membrane performance were investigated. A membrane with 2 μm active layer was obtained with a high flux of 1306.9 g/m 2 h. The optimal membrane with the highest pervaporation separation index (PSI) (19.15 kg/m 2 h) showed a total flux of 530.6 g/m 2 h and a separation factor of 36.1 at 37 C, and a PSI of 65.61 kg/m 2 h and a flux of 1927.0 g/m 2 h at 70 C. Membrane performance was affected by feed composition and temperature. Acetone-butanol-ethanol solution and fermentation broth gave lower butanol fluxes and separation factors compared to butanol model solution.

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Section: Introductionmentioning

confidence: 99%

Spray‐coatedPDMS/PVDFcomposite membrane for enhanced butanol recovery by pervaporation

Cheng

Yang

Bao

et al. 2020

J of Applied Polymer Sci

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“…The main models are developed from the mathematical description of two independent variables, measured experimentally, such as total permeate flux and separation factor [ 32 ], permeability of permeants [ 33 ] or permeate fluxes [ 34 ] and the model parameters are mainly calculated by objective functions [ 35 , 36 ]. Most of the reported models are based on the solution–diffusion model [ 37 ]. However, it is common to use the Arrhenius model to describe the dependence of permeate fluxes on temperature [ 38 ].…”

Section: Introductionmentioning

confidence: 99%

Separation and Semi-Empiric Modeling of Ethanol–Water Solutions by Pervaporation Using PDMS Membrane

et al. 2020

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High energy demand, competitive fuel prices and the need for environmentally friendly processes have led to the constant development of the alcohol industry. Pervaporation is seen as a separation process, with low energy consumption, which has a high potential for application in the fermentation and dehydration of ethanol. This work presents the experimental ethanol recovery by pervaporation and the semi-empirical model of partial fluxes. Total permeate fluxes between 15.6–68.6 mol m−2 h−1 (289–1565 g m−2 h−1), separation factor between 3.4–6.4 and ethanol molar fraction between 16–171 mM (4–35 wt%) were obtained using ethanol feed concentrations between 4–37 mM (1–9 wt%), temperature between 34–50 ∘C and commercial polydimethylsiloxane (PDMS) membrane. From the experimental data a semi-empirical model describing the behavior of partial-permeate fluxes was developed considering the effect of both the temperature and the composition of the feed, and the behavior of the apparent activation energy. Therefore, the model obtained shows a modified Arrhenius-type behavior that calculates with high precision the partial-permeate fluxes. Furthermore, the versatility of the model was demonstrated in process such as ethanol recovery and both ethanol and butanol dehydration.

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“…Polymeric membranes, such as polydimethylsiloxane (PDMS) membranes, have received considerable attention in the literature due to their hydrophobicity, and hence their capability to separate organics from dilute aqueous mixtures [1][2][3], and even to break an azeotrope. Therefore, applying pervaporation or vapor permeation with conventional separation processes can help to reduce operating costs while these hybrid processes are also typically more technologically and economically feasible than a stand-alone membrane process.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the permeation behavior of ethanol/water mixtures through a polydimethylsiloxane (PDMS) membrane in pervaporation and vapor permeation conditions

Hietaharju

Kangas

Tanskanen

2019

Separation and Purification Technology

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Pervaporation

Cited by 24 publications

References 175 publications

Spray‐coatedPDMS/PVDFcomposite membrane for enhanced butanol recovery by pervaporation

Spray‐coatedPDMS/PVDFcomposite membrane for enhanced butanol recovery by pervaporation

Separation and Semi-Empiric Modeling of Ethanol–Water Solutions by Pervaporation Using PDMS Membrane

Analysis of the permeation behavior of ethanol/water mixtures through a polydimethylsiloxane (PDMS) membrane in pervaporation and vapor permeation conditions

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