Effect of convective mass transfer on beer diafiltration
Апстракт
The industrial application of dialysis for the de-alcoholization of beer is based on a diafiltration method, because a small positive transmembrane pressure an the beer side of the membrane is necessary to prevent ingress of water by osmosis and resulting dilution of the beer. This pressure difference introduces the new driving and convective mass transfer mechanism, which takes place simultaneously with the diffusive mechanism (specific for dialysis). The question is the influence which it has on the overall mass transfer phenomenon and selectivity of the alcohol/extract separation. An experimental investigation of beer diafiltration using two different membranes (cellulose based Cuprophane and polysulfone) was performed at different transmembrane pressure differences and flow rates. On the basis of the experimentally measured inlet and outlet concentrations the convective components of the alcohol and extract mass fluxes as well as the overall separation factor were determined. This ...data was analysed and compared. The results indicate that convective mass transfer stimulated extract transfer and losses and thus diminished the efficiency of selective alcohol/extract separation in beer dialysis.
Кључне речи:
diafiltration / beer / diffusion / convection / Cuprophane / polysulfoneИзвор:
Journal of the Institute of Brewing, 1997, 103, 5, 279-282Издавач:
- Inst Brewing, London
DOI: 10.1002/j.2050-0416.1997.tb00956.x
ISSN: 0046-9750
WoS: A1997XZ44400002
Scopus: 2-s2.0-0040097761
Институција/група
Tehnološko-metalurški fakultetTY - JOUR AU - Leskošek, Ida AU - Nedović, Viktor AU - Petkovska, Menka PY - 1997 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/129 AB - The industrial application of dialysis for the de-alcoholization of beer is based on a diafiltration method, because a small positive transmembrane pressure an the beer side of the membrane is necessary to prevent ingress of water by osmosis and resulting dilution of the beer. This pressure difference introduces the new driving and convective mass transfer mechanism, which takes place simultaneously with the diffusive mechanism (specific for dialysis). The question is the influence which it has on the overall mass transfer phenomenon and selectivity of the alcohol/extract separation. An experimental investigation of beer diafiltration using two different membranes (cellulose based Cuprophane and polysulfone) was performed at different transmembrane pressure differences and flow rates. On the basis of the experimentally measured inlet and outlet concentrations the convective components of the alcohol and extract mass fluxes as well as the overall separation factor were determined. This data was analysed and compared. The results indicate that convective mass transfer stimulated extract transfer and losses and thus diminished the efficiency of selective alcohol/extract separation in beer dialysis. PB - Inst Brewing, London T2 - Journal of the Institute of Brewing T1 - Effect of convective mass transfer on beer diafiltration EP - 282 IS - 5 SP - 279 VL - 103 DO - 10.1002/j.2050-0416.1997.tb00956.x ER -
@article{ author = "Leskošek, Ida and Nedović, Viktor and Petkovska, Menka", year = "1997", abstract = "The industrial application of dialysis for the de-alcoholization of beer is based on a diafiltration method, because a small positive transmembrane pressure an the beer side of the membrane is necessary to prevent ingress of water by osmosis and resulting dilution of the beer. This pressure difference introduces the new driving and convective mass transfer mechanism, which takes place simultaneously with the diffusive mechanism (specific for dialysis). The question is the influence which it has on the overall mass transfer phenomenon and selectivity of the alcohol/extract separation. An experimental investigation of beer diafiltration using two different membranes (cellulose based Cuprophane and polysulfone) was performed at different transmembrane pressure differences and flow rates. On the basis of the experimentally measured inlet and outlet concentrations the convective components of the alcohol and extract mass fluxes as well as the overall separation factor were determined. This data was analysed and compared. The results indicate that convective mass transfer stimulated extract transfer and losses and thus diminished the efficiency of selective alcohol/extract separation in beer dialysis.", publisher = "Inst Brewing, London", journal = "Journal of the Institute of Brewing", title = "Effect of convective mass transfer on beer diafiltration", pages = "282-279", number = "5", volume = "103", doi = "10.1002/j.2050-0416.1997.tb00956.x" }
Leskošek, I., Nedović, V.,& Petkovska, M.. (1997). Effect of convective mass transfer on beer diafiltration. in Journal of the Institute of Brewing Inst Brewing, London., 103(5), 279-282. https://doi.org/10.1002/j.2050-0416.1997.tb00956.x
Leskošek I, Nedović V, Petkovska M. Effect of convective mass transfer on beer diafiltration. in Journal of the Institute of Brewing. 1997;103(5):279-282. doi:10.1002/j.2050-0416.1997.tb00956.x .
Leskošek, Ida, Nedović, Viktor, Petkovska, Menka, "Effect of convective mass transfer on beer diafiltration" in Journal of the Institute of Brewing, 103, no. 5 (1997):279-282, https://doi.org/10.1002/j.2050-0416.1997.tb00956.x . .