Skip to main content

Login for students

Login for employees

Publication detail

The Study of Rheological Properties of Zeolite Water Dispersions
Authors: Šiška Bedřich | Jiránková Hana | Cakl Jiří | Doleček Petr
Year: 2007
Type of publication: článek ve sborníku
Name of source: Proceedings of the 34th International Conference of SSChE
Publisher name: Slovenská technická univezita v Bratislave
Place: Bratislava
Page from-to: 209/1-209/9
Titles:
Language Name Abstract Keywords
cze Studium reologických vlastností vodných disperzí zeolitu Příspěvek se zabývá studiem reologických vlastností vodných disperzí zeolitu. Je zaměřen na sledování vlivu reologických parametrů na intenzitu toku permeátu v kombinovaném membránovém procesu, který spojuje mikrofiltraci a iontovou výměnu na zeolitech. vodné disperze zeolitu;reologické vlastnosti;membránový proces
eng The Study of Rheological Properties of Zeolite Water Dispersions An investigation of the rheological properties of zeolite water dispersions is reported here in order to evaluate the rheological parameters that potentially affect the steady state permeate flux in the hybrid membrane process which combines the cross-flow membrane microfiltration and ionic exchange on zeolites added to the feed stream. Various types of rheology tests were performed on Zeolite A-water dispersions using a Haake RheoStress RS-150 rheometer. Typical shear rates in the measurements varied in the range between 10?2 to 300 s?1. The low shear rate behaviour was found to be quite different from the high shear rate behaviour for the concentrated dispersions, with a plateau value at low shear rates indicating the appearance of a yield stress. Long term sedimentation test were also performed in which the interfaces between slurry or clear water and dispersion were recorded with settling time. It was found that the settlement characteristics of Zeolite A dispersions change significantly with the particle concentration. The results obtained are in good qualitative agreement with manifestation of anomalous behaviour in the rheological measurements. Rheological properties;Yield stress;Zeolite dispersions;Membrane process