Login for students

Login for employees

Publication detail

Influence of Ionic Strength and pH of Dispersed Systems on Microfiltration
Authors: Šmídová Dagmar | Mikulášek Petr | Wakeman R.J. | Velikovská Pavlína
Year: 2003
Type of publication: článek ve sborníku
Name of source: Proceedings of the Membrane Science and Technology Conference of the Visegrad Countries with Wider International Participation PERMEA 2003
Publisher name: Slovak Society of Chemical Engineering
Place: Bratislava, SK
Page from-to: L10.2
Titles:
Language Name Abstract Keywords
cze Influence of Ionic Strength and pH of Dispersed Systems on Microfiltration The influence of particle shape, zeta-potential and size with change of pH and ionic strength on permeate flux during the microfiltration of model dispersions (two different china clays with mean particle sizes 3.5 micrometers and 1.5 micrometers) on flat sheet ceramic membranes (ZrO2, mean size of pores 0.2 micrometers) have been studied. The experiments include measurement of the basic characteristics of model dispersions. The description of the experimental system is also presented. The results of the experiments show that zeta-potential of particles have indispensable impact on the permeate flux. This phenomenon is especially pronounced during the microfiltration of dispersion in the area close of isoelectric point of dispersion, when the value of permeate flux increased to double value of non-treated dispersion. This phenomenon has caused the particle interaction. In area closed of isoelectric point the dispersion had tendency to instability, particles tend to aggregate. It resulted in higher porosity of filter cake and thereby to higher value of permeate flux and lower value of filter cake resistance. mikrofiltrace;pH;iontová síla;zeta-potenciál
eng Influence of Ionic Strength and pH of Dispersed Systems on Microfiltration The influence of particle shape, zeta-potential and size with change of pH and ionic strength on permeate flux during the microfiltration of model dispersions (two different china clays with mean particle sizes 3.5 micrometers and 1.5 micrometers) on flat sheet ceramic membranes (ZrO2, mean size of pores 0.2 micrometers) have been studied. The experiments include measurement of the basic characteristics of model dispersions. The description of the experimental system is also presented. The results of the experiments show that zeta-potential of particles have indispensable impact on the permeate flux. This phenomenon is especially pronounced during the microfiltration of dispersion in the area close of isoelectric point of dispersion, when the value of permeate flux increased to double value of non-treated dispersion. This phenomenon has caused the particle interaction. In area closed of isoelectric point the dispersion had tendency to instability, particles tend to aggregate. It resulted in higher porosity of filter cake and thereby to higher value of permeate flux and lower value of filter cake resistance. microfiltration;pH;ionic strength;zeta-potential

Departments

Other Parts

Map

en.mapy.cz

Services

Popular Links

© 2023 University of Pardubice, Studentská 95, 532 10 Pardubice 2
Phone: +420 466 036 111, 466 036 112, 466 036 113
Webmaster, RSS
Data box ID: f5vj9hu
Accessibility Statement
CC BY-NC-ND 4.0Creative CommonsAttributionNonCommercialNoDerivatives