Concentration by pervaporation of brown crab volatile compounds from dilute model solutions: Evaluation of PDMS membrane

Martínez, Rodrigo; Sanz, Marı́a Teresa; Beltrán, Sagrario

doi:10.1016/j.memsci.2012.10.035

Cited by 24 publications

(28 citation statements)

References 21 publications

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“…However, in these cases, these differences are not so high. Similar results were found in Martínez et al (2013) for 2,3-pentanedione (66.3), 3-methyl butanal (54.4) and benzaldehyde (37.5), however, these authors used a synthetic aroma compounds in the multicomponent model solution.…”

Section: Influence Of Temperaturesupporting

confidence: 68%

“…Table 3 reports the estimated apparent activation energies for permeation of coffee aroma compounds and water with their respective correlation coefficient values. A higher value of apparent activation energy indicates a more sensitive behavior toward temperature changes (Martínez et al, 2013). It can be observed from Table 3 that for the most of the organic compounds, E a;i is higher than water E a;i , except for 2,3-butanedione, benzaldehyde and furfural.…”

Section: Influence Of Temperaturementioning

confidence: 95%

“…It is defined as the ratio between the concentration in the permeate and in the feed for a determined component i (Martínez et al, 2013)…”

Section: Theorymentioning

confidence: 99%

“…The liquid molar volume for all aromatic compounds was estimated by Tyn and Calus method and Vetere relationship (Poling et al, 2001). Vapor pressure was obtained or predicted by using the software Chemcad 6 (2008) except for 2,3-pentanedione that was obtained from Martínez et al (2013) and 5-methyl furfural that was obtained from Lomba et al (2014). Activity coefficients at infinite dilution in water were estimated using the predictive method UNIFAC-Dortmund, except for 2,3-pentanedione, 3-methyl butanal and benzaldehyde which were obtained from the literature (Martínez et al, 2012).…”

Section: Feed Solutionmentioning

confidence: 99%

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Concentration of aroma compounds from an industrial solution of soluble coffee by pervaporation process

Weschenfelder

Lantin

Viegas³

et al. 2015

Journal of Food Engineering

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a b s t r a c tPervaporation experiments with PDMS membrane have been performed in a plate and frame module to investigate its ability to concentrate volatile compounds identified in an industrial soluble coffee solution. Eight compounds were chosen to depict key aroma of soluble coffee. The effect of feed flow rate, temperature and permeate pressure on the pervaporation performance has been analyzed. Concentration polarization phenomena was not identified in the feed flow rate studied. The temperature effect showed a good agreement with the nonlinear Arrhenius equation. The permeate pressure followed the solution-diffusion model behavior. Results showed that pervaporation is a promising alternative to concentrate aroma compounds from soluble coffee.

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Section: Influence Of Temperaturesupporting

confidence: 68%

Section: Influence Of Temperaturementioning

confidence: 95%

“…It is defined as the ratio between the concentration in the permeate and in the feed for a determined component i (Martínez et al, 2013)…”

Section: Theorymentioning

confidence: 99%

Section: Feed Solutionmentioning

confidence: 99%

See 2 more Smart Citations

Concentration of aroma compounds from an industrial solution of soluble coffee by pervaporation process

Weschenfelder

Lantin

Viegas³

et al. 2015

Journal of Food Engineering

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“…Among the organic compounds separated by organophilic pervaporation, many of them are high-boiling compounds (boiling point >1008C). Apart from being widely studied biofuels (e.g., bio-butanol/bio-ethanol), many high-boiling aroma compounds such as 1-octen-3-ol, 15,16 ethyl hexanoate, 17,18 and vanillin 13,19,20 were also recovered from fermentation broth by organophilic pervaporation. These aromas may be recovered as high-purity forms from aqueous solutions by pervaporation integrated with fractional condensation process.…”

Section: Introductionmentioning

confidence: 99%

Efficient recovery of high‐purity aniline from aqueous solutions using pervaporation‐fractional condensation system

Zhang

Hao

et al. 2015

AIChE Journal

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Selective recovery of valuable minor component with high-purity form from dilute aqueous solution is an interesting issue in the area of organophilic pervaporation. High-purity aniline was recovered with a high production rate from dilute aqueous solution by a pervaporation-fractional condensation (PVFC) coupling system. The effects of downstream pressure and temperature (the first condenser) on the performance of PVFC system were investigated based on experimental measurements and Aspen simulations. Sorption and desorption experiments demonstrated that the sorption selectivity of poly(ether block amide) (PEBA-2533) membrane to aniline was extremely high, indicating excellent pervaporation performance for aniline/water solutions. The perfect integration of high-performance PEBA-2533 membrane with the fractional condensation process yielded high production rate of 1222.5 g/(m 2 h) as well as high recovery efficiency (86.5%) for recovering high-purity aniline in the first condenser when feed concentration and temperature were 1 wt % and 808C, respectively. V C 2015 American Institute of Chemical Engineers AIChE J, 61: [4445][4446][4447][4448][4449][4450][4451][4452][4453][4454][4455] 2015

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Preparation and characterization of Silicalite‐1/PDMS surface sieving pervaporation membrane for separation of ethanol/water mixture

Liu

et al. 2015

J of Applied Polymer Sci

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To improve the pervaporation performance of Silicalite-1/PDMS composite membrane by adding a small amount of Silicalite-1 zeolite, novel Silicalite-1/PDMS surface sieving membranes (SSMs) were prepared by attaching Silicalite-1 particles on the PDMS membrane surface. The obtained membranes and traditional mixed-matrix membranes (MMMs) were characterized by SEM, XRD, TGA, FT-IR, and pervaporation separation of ethanol-water mixture. Effects of Silicalite-1 particles content, feed temperatures, and feed compositions on the separation performance were discussed. From the cross-section view SEM images of SSMs, a two-layer structure was observed. The thickness of the Silicalite-1 layer was about 300 nm to 2 lm. The TGA analysis indicates that the zeolite concentration in 3 wt % SSM is lower than 10 wt % MMMs. In the ethanol/water pervaporation experiment, the separation factor of Silicalite-1/PDMS SSMs increased considerably compared with pure PDMS membrane. When the suspensions concentrations of Silicalite-1 particles reached 3 wt %, the separation factor was about 217% increase over pure PDMS membrane and 52.9% increase over 10 wt % Silicalite-1/PDMS MMMs. As the ethanol concentration in the feed increases, the separation factor of SSMs increases, whereas permeation flux decreases. At the same time, with increasing operating temperature, the permeation flux of SSMs increased. The stability of SSMs at high temperature is better than the traditional MMMs.

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Concentration by pervaporation of brown crab volatile compounds from dilute model solutions: Evaluation of PDMS membrane

Cited by 24 publications

References 21 publications

Concentration of aroma compounds from an industrial solution of soluble coffee by pervaporation process

Concentration of aroma compounds from an industrial solution of soluble coffee by pervaporation process

Efficient recovery of high‐purity aniline from aqueous solutions using pervaporation‐fractional condensation system

Preparation and characterization of Silicalite‐1/PDMS surface sieving pervaporation membrane for separation of ethanol/water mixture

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