Citation
Hernandes E. E., . and Weschenfelder T. A., . and Scheer A. P., . Pervaporation process of coffee volatile compounds with PDMS membrane. pp. 487-496. ISSN 0116-6514
Abstract
Pervaporation experiments were performed with diluted aqueous solutions of coffee aroma volatile compounds (benzaldehyde and acetic acid) using a PDMS membrane. Binary solutions of benzaldehyde (BZ-water) acetic acid (AA-water) and a ternary solution (BZ-AA-water) were used as feed to investigate the effects of temperature (20 30 and 40C) pressure (270 530 and 800 Pa) and feed composition (20 40 and 60 ppm) on the process. The dependence of permeation fluxes with the temperature was expressed by the non-linear Arrhenius equation for all assays. Only the BZ enrichment factor in binary solutions increased with temperature. The increase in feed concentration caused a linear rise in individual permeation fluxes; however it did not influence the membrane selectivity to the binary solutions. The individual permeation fluxes and enrichment factor for both BZ and AA were negatively influenced by the presence of another organic molecule.
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Abstract
Pervaporation experiments were performed with diluted aqueous solutions of coffee aroma volatile compounds (benzaldehyde and acetic acid) using a PDMS membrane. Binary solutions of benzaldehyde (BZ-water) acetic acid (AA-water) and a ternary solution (BZ-AA-water) were used as feed to investigate the effects of temperature (20 30 and 40C) pressure (270 530 and 800 Pa) and feed composition (20 40 and 60 ppm) on the process. The dependence of permeation fluxes with the temperature was expressed by the non-linear Arrhenius equation for all assays. Only the BZ enrichment factor in binary solutions increased with temperature. The increase in feed concentration caused a linear rise in individual permeation fluxes; however it did not influence the membrane selectivity to the binary solutions. The individual permeation fluxes and enrichment factor for both BZ and AA were negatively influenced by the presence of another organic molecule.
Additional Metadata
| Item Type: | Article |
|---|---|
| AGROVOC Term: | Coffee |
| AGROVOC Term: | Volatile compounds |
| AGROVOC Term: | Aroma compounds |
| AGROVOC Term: | Pervaporation |
| AGROVOC Term: | Membranes |
| AGROVOC Term: | Benzaldehyde |
| AGROVOC Term: | Acetic acid |
| AGROVOC Term: | Temperature |
| AGROVOC Term: | Feed composition |
| AGROVOC Term: | Permeation |
| Depositing User: | Mr. AFANDI ABDUL MALEK |
| Last Modified: | 24 Apr 2025 00:54 |
| URI: | http://webagris.upm.edu.my/id/eprint/9147 |
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