Uticaj geometrije promotora turbulencije na povećanje kapaciteta tokom koncentrisanja mleka / Influence of turbulence promoters geometry on milk concentration

• Published in: Prehrambena industrija, mleko i mlečni proizvodi / Food Industry, Milk and Dairy Products Vol. 23; no. 1; pp. 29 - 34
• Main Authors: Jovičević, Dragica Z. (Tehnološki fakultet, Novi Sad (Srbija)), Popović, Svetlana S. (Tehnološki fakultet, Novi Sad (Srbija)), Milanović, Spasenija D. (Tehnološki fakultet, Novi Sad (Srbija)), Lukić, Nataša Lj. (Tehnološki fakultet, Novi Sad (Srbija)), Iličić, Mirela D. (Tehnološki fakultet, Novi Sad (Srbija))
• Format: Journal Article
• Language: Serbian
• Published: Savez hemijskih inženjera Srbije, Beograd (Srbija) / Association of Chemical Engineers of Serbia, Belgrade (Serbia) 2012
• Subjects: Membrane filtration; Milk; Milk protein

The application of membrane processes is limited by capacity reduction due to membrane fouling. Adsorbed and deposited proteins at the membrane surface and/or in the membrane pore create additional mass transfer resistance and reduce the process capacity. One of the ways to reduce the fouling is to change the hydrodynamic regime by introduction of turbulence promoters in membrane module. The objective of this study was to investigate the influence of turbulence promoter with different geometric shape and approximately the same aspect ratio on the process capacity during concentration of milk and reduction of fouling. Twisted tape, Kenics static mixer and blade type Koflo mixer were used as turbulence promoters. In the presence of turbulence promoters, fouling resistance was an order of magnitude lower and energy consumption was reduced for 28 to 50%. The alternation of streamline path induced by the presence of all three promoters has major impact on fouling reduction and improving the selective characteristics of membrane.