Pervaporation of ethanol/water through a poly(vinyl alcohol)/cyclodextrin (PVA/CD) membrane

Yamasaki, Akira; Iwatsubo, Takashi; Masuoka, Toshio; Mizoguchi, K.

doi:10.1016/0376-7388(93)e0217-8

Cited by 83 publications

(37 citation statements)

References 6 publications

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“…216 284 and cyclodextrin in PVA. 285 Within a given class of materials, a trade-off is oft en observed between selectivity and permeability, with more water selective materials yielding lower permeabilities.…”

Section: Pervaporation and Vapor Permeation (Dehydration)mentioning

confidence: 99%

Separation technologies for the recovery and dehydration of alcohols from fermentation broths

Vane

2008

Biofuels Bioprod Bioref

502

352

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Multi-column distillation followed by molecular sieve adsorption is currently the standard method for producing fuel-grade ethanol from dilute fermentation broths in modern corn-to-ethanol facilities. As the liquid biofuels industry transitions to lignocellulosic feedstocks, expands the end-product portfolio to include other alcohols, and encounters more dilute alcohol concentrations, alternative separation technologies which are more energy effi cient than the conventional approach will be in demand. In this review, alcohol recovery technology options and alcohol dehydration technology options for the production of ethanol and 1-butanol are reviewed and compared, with an emphasis on the energy footprint of each approach. Select hybrid technologies are also described.

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Section: Pervaporation and Vapor Permeation (Dehydration)mentioning

confidence: 99%

Separation technologies for the recovery and dehydration of alcohols from fermentation broths

Vane

2008

Biofuels Bioprod Bioref

502

352

View full text Add to dashboard Cite

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“…Therefore, it is important to estimate the diffusion coefficient, D i of penetrating molecules to understand the mechanism of transport. From Fick's law of diffusion, the diffusion flux can be expressed as [48]:…”

Section: Diffusion Coefficientmentioning

confidence: 99%

Preparation and pervaporation performance of chitosan-poly(methacrylic acid) polyelectrolyte complex membranes for dehydration of 1,4-dioxane

Choudhari

Premakshi

2016

Polym Eng Sci

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Polyelectrolyte complex (PEC) membranes composed of chitosan (CS) and poly(methacrylic acid) (PMAA) were prepared by mixing the polymer solutions in different ratios. The chemical interaction and crystallinity of the resulting PEC membranes were respectively analyzed by Fourier transform infrared spectroscopy (FTIR) and wide-angle Xray diffraction (WAXD). Differential scanning calorimetry (DSC) was used to characterize the thermal properties of the membranes. The membranes thus obtained were subjected to pervaporation (PV) separation of water-dioxane mixtures. Among the PEC membranes, membrane containing 30 wt% ratio of PMAA (M-3) exhibited the highest separation selectivity of 840 with a flux of 12.07 3 10 22 kg/m 2 h at 308C at 15 wt% of water in the feed. By the incorporation of NaY zeolite into PEC up to 5 wt%, we have been able to overcome the trade-off phenomenon existing between flux and selectivity in PV process. From the temperature dependent diffusion and permeation values, the Arrhenius activation parameters were estimated. The resulting activation energy values obtained for water permeation (E pw ) are much lower than those of dioxane permeation (E po ), suggesting that the developed membranes have higher separation efficiency for waterdioxane system. Based on the heat of sorption (DH s ) values, the mode of sorption was discussed. POLYM. ENG. SCI.,

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“…For such an application, the development of technologies for the preparation of water-insoluble CD films as sensing interfaces without loss of their inherent function of selective molecular recognition for various guest compounds is important, because of the high solubility of CD in water. Several approaches are already known for the preparation of solid films containing CD, which include synthesis of CD polymers by crosslinking the CD inclusion complexes [2], attachment of hydrophobic functional groups to CD [3][4][5][6][7], immobilization of the CD oligomers in a poly(vinylalcohol) (PVA) matrix by crosslinking PVA [8][9][10], electrochemical synthesis of the pyrrole-sulfated-β-CD polymer [11], incorporation of cationic CD derivatives into anionic Nafion films [12,13], and coating of water-soluble CD films with a protecting film [14][15][16]. In these approaches, complicated procedures are generally necessary to prepare the functionalized CD films, which are time-consuming and require a relatively high cost.…”

Section: Introductionmentioning

confidence: 99%

Facile formation of water-insoluble cyclodextrin/Nafion composite films on solid surfaces

Nakata

Sakamoto

Taguchi

et al. 2005

Journal of Colloid and Interface Science

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Pervaporation of ethanol/water through a poly(vinyl alcohol)/cyclodextrin (PVA/CD) membrane

Cited by 83 publications

References 6 publications

Separation technologies for the recovery and dehydration of alcohols from fermentation broths

Separation technologies for the recovery and dehydration of alcohols from fermentation broths

Preparation and pervaporation performance of chitosan-poly(methacrylic acid) polyelectrolyte complex membranes for dehydration of 1,4-dioxane

Facile formation of water-insoluble cyclodextrin/Nafion composite films on solid surfaces

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