Collect. Czech. Chem. Commun. 1997, 62, 1879-1887

Ceramic Cross-Flow Microfiltration in the Presence of Inserts

Petr Mikulášek, Jiří Cakl and Zbyněk Petráš

Department of Chemical Engineering, University of Pardubice, 532 10 Pardubice, Czech Republic


The influence of inserts with various configurations on permeate flux through a tubular ceramic microfiltration membrane was studied. The commercial metal-working oil emulsion was used in the experiments. A more extensive study of the effect of shear rate on permeate flux was made by comparing the steady-state flux of the empty tube system and the system with inserts. The cross-flow microfiltration with inserts was found to be simple and effective. Analysing experimental results, it was concluded that the introduction of inserts, irrespective of their configurations, resulted in a significant increase in permeate flux compared with results obtained in the empty tube system. The interruption of formation of a boundary layer by the inserts is attributed to mixing and migration of rejected particles from the membrane surface.

Keywords: Microfiltration; Cross flow; Concentration polarisation; Membrane fouling; Inserts.