Influence of twisted tape and blade type turbulence promoters on the microfiltration of milk

Dragica Z. Jovičević, Svetlana S. Popović, Spasenija D. Milanović, G. Vatai

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The aim of this research was to study influence of turbulence promoters on permeate flux improvement and energy savings during microfiltration of milk. Low pressure loss turbulence promoters, twisted tape and blade shaped static mixer, named Koflo, were used. The chosen turbulence promoters are of the same aspect ratio (ratio of pitch length to diameter of promoter) 2.5 and inserted into the tubular ceramic membrane (0.1 μm pore size). By applying turbulence promoters, fouling was reduced and the permeate fluxes were increased by a factor of three for twisted tape and by a factor of four for blade shaped static mixer. Intensity of turbulence in a module fitted with promoter depends on the applied cross flow rate. An increase of cross flow rate induces a rise of flux in the both modes of operation, with and without turbulence promoters. When compared at the same cross flow rate, the flux obtained by application of turbulence promoters is always higher than the flux obtained without promoters. The cross flow rates, under which the maximal flux improvement was achieved (300% for twisted tape and 320% for Koflo), are several folds lower than that applied in operation without promoter. In the presence of turbulence promoters permeate flux was increased as well as the pressure drop along membrane. Despite the higher pressure drop, operation with turbulence promoters provides significantly reduced energy consumption compared to operation without turbulence promoters.

Original languageEnglish
Title of host publicationCEFood 2012 - Proceedings of 6th Central European Congress on Food
PublisherUniversity of Novi Sad, Faculty of Technology
Pages706-711
Number of pages6
Publication statusPublished - 2012
Event6th Central European Congress on Food, CEFood 2012 - Novi Sad, Serbia
Duration: May 23 2012May 26 2012

Other

Other6th Central European Congress on Food, CEFood 2012
CountrySerbia
CityNovi Sad
Period5/23/125/26/12

Keywords

  • Blade shape static mixer
  • Microfiltration
  • Turbulence promoters
  • Twisted tape

ASJC Scopus subject areas

  • Food Science

Fingerprint Dive into the research topics of 'Influence of twisted tape and blade type turbulence promoters on the microfiltration of milk'. Together they form a unique fingerprint.

  • Cite this

    Jovičević, D. Z., Popović, S. S., Milanović, S. D., & Vatai, G. (2012). Influence of twisted tape and blade type turbulence promoters on the microfiltration of milk. In CEFood 2012 - Proceedings of 6th Central European Congress on Food (pp. 706-711). University of Novi Sad, Faculty of Technology.