Skip to main content

Login for students

Login for employees

Publication detail

The Influence of Na+, Mg2+ and Al3+ on the Zeta-potential of Titanium Dioxide Dispersion and Its Microfiltration Process
Authors: Velikovská Pavlína | Mikulášek Petr
Year: 2006
Type of publication: článek ve sborníku
Name of source: Proceedings of the 17th International Congress of Chemical and Process Engineering CHISA
Publisher name: Process Engineering Publisher Ing. Jan Novosad
Place: Praha, Česká republika
Page from-to: 1-4
Titles:
Language Name Abstract Keywords
cze Vliv Na+, Mg2+ and Al3+ na zeta-potenciál disperzí oxidu titaničitého a průběh mikrofiltrace těchto disperzí. Práce se zabývá studiem mikrofiltračního procesu oxidu titaničitého. Byla provedena řada experimentů ?měněným parametrem byly následující veličiny: pH, iontová síla různých solí. Průběh mikrofiltrace byl analyzován na základě znalosti distribuce velikosti částic TiO2 a zeta potenciálu částic disperze a membrány. Výsledky prokázaly, že použité anorganické soli ovlivňují disperzi TiO2 a tím i průběh mikrofiltračního procesu. Oxid titaničitý;Keramická Membrána;Mikrofiltrace;Izoelektrický bod;Iontová síla
eng The Influence of Na+, Mg2+ and Al3+ on the Zeta-potential of Titanium Dioxide Dispersion and Its Microfiltration Process Effects of inorganic salts on ceramic membrane microfiltration of TiO2 suspensions were studied. A series of crossflow microfiltration experiments were carried out at various pH values, ionic strengths and with various multivalent inorganic salts. Filtration behaviours were analyzed based on measurements of particle size distribution of the TiO2 suspension, zeta potential of alumina membrane and TiO2 particle. Results showed that inorganic solution salts affect the microfiltration of TiO2 suspension by changing the surface properties of both the alumina membrane and TiO2 particle. The solution environments affect the dispersion of TiO2 particles and played a major role in the filtration flux. The aim of this work is measuring of the intensity of permeate flux as a function of pH, various inorganic salts, salt concentration, and the study of the influence of these parameters on the separation efficiency, respectively. Titanium dioxide;Ceramic membrane;Microfiltration;Isoelectric point;Ionic strength